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Model loading and texturing

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Dane Johnson
2021-01-18 18:25:47 -06:00
parent 66bf7776c7
commit 155b572aca
1283 changed files with 533814 additions and 42 deletions
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thirdparty/assimp/code/3DS/3DSConverter.cpp vendored Normal file
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/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
---------------------------------------------------------------------------
Copyright (c) 2006-2019, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the following
conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---------------------------------------------------------------------------
*/
/** @file Implementation of the 3ds importer class */
#ifndef ASSIMP_BUILD_NO_3DS_IMPORTER
// internal headers
#include "3DSLoader.h"
#include "Common/TargetAnimation.h"
#include <assimp/scene.h>
#include <assimp/DefaultLogger.hpp>
#include <assimp/StringComparison.h>
#include <memory>
#include <cctype>
using namespace Assimp;
static const unsigned int NotSet = 0xcdcdcdcd;
// ------------------------------------------------------------------------------------------------
// Setup final material indices, generae a default material if necessary
void Discreet3DSImporter::ReplaceDefaultMaterial()
{
// Try to find an existing material that matches the
// typical default material setting:
// - no textures
// - diffuse color (in grey!)
// NOTE: This is here to workaround the fact that some
// exporters are writing a default material, too.
unsigned int idx( NotSet );
for (unsigned int i = 0; i < mScene->mMaterials.size();++i)
{
std::string &s = mScene->mMaterials[i].mName;
for ( std::string::iterator it = s.begin(); it != s.end(); ++it ) {
*it = static_cast< char >( ::tolower( *it ) );
}
if (std::string::npos == s.find("default"))continue;
if (mScene->mMaterials[i].mDiffuse.r !=
mScene->mMaterials[i].mDiffuse.g ||
mScene->mMaterials[i].mDiffuse.r !=
mScene->mMaterials[i].mDiffuse.b)continue;
if (mScene->mMaterials[i].sTexDiffuse.mMapName.length() != 0 ||
mScene->mMaterials[i].sTexBump.mMapName.length() != 0 ||
mScene->mMaterials[i].sTexOpacity.mMapName.length() != 0 ||
mScene->mMaterials[i].sTexEmissive.mMapName.length() != 0 ||
mScene->mMaterials[i].sTexSpecular.mMapName.length() != 0 ||
mScene->mMaterials[i].sTexShininess.mMapName.length() != 0 )
{
continue;
}
idx = i;
}
if ( NotSet == idx ) {
idx = ( unsigned int )mScene->mMaterials.size();
}
// now iterate through all meshes and through all faces and
// find all faces that are using the default material
unsigned int cnt = 0;
for (std::vector<D3DS::Mesh>::iterator
i = mScene->mMeshes.begin();
i != mScene->mMeshes.end();++i)
{
for (std::vector<unsigned int>::iterator
a = (*i).mFaceMaterials.begin();
a != (*i).mFaceMaterials.end();++a)
{
// NOTE: The additional check seems to be necessary,
// some exporters seem to generate invalid data here
if (0xcdcdcdcd == (*a))
{
(*a) = idx;
++cnt;
}
else if ( (*a) >= mScene->mMaterials.size())
{
(*a) = idx;
ASSIMP_LOG_WARN("Material index overflow in 3DS file. Using default material");
++cnt;
}
}
}
if (cnt && idx == mScene->mMaterials.size())
{
// We need to create our own default material
D3DS::Material sMat("%%%DEFAULT");
sMat.mDiffuse = aiColor3D(0.3f,0.3f,0.3f);
mScene->mMaterials.push_back(sMat);
ASSIMP_LOG_INFO("3DS: Generating default material");
}
}
// ------------------------------------------------------------------------------------------------
// Check whether all indices are valid. Otherwise we'd crash before the validation step is reached
void Discreet3DSImporter::CheckIndices(D3DS::Mesh& sMesh)
{
for (std::vector< D3DS::Face >::iterator i = sMesh.mFaces.begin(); i != sMesh.mFaces.end();++i)
{
// check whether all indices are in range
for (unsigned int a = 0; a < 3;++a)
{
if ((*i).mIndices[a] >= sMesh.mPositions.size())
{
ASSIMP_LOG_WARN("3DS: Vertex index overflow)");
(*i).mIndices[a] = (uint32_t)sMesh.mPositions.size()-1;
}
if ( !sMesh.mTexCoords.empty() && (*i).mIndices[a] >= sMesh.mTexCoords.size())
{
ASSIMP_LOG_WARN("3DS: Texture coordinate index overflow)");
(*i).mIndices[a] = (uint32_t)sMesh.mTexCoords.size()-1;
}
}
}
}
// ------------------------------------------------------------------------------------------------
// Generate out unique verbose format representation
void Discreet3DSImporter::MakeUnique(D3DS::Mesh& sMesh)
{
// TODO: really necessary? I don't think. Just a waste of memory and time
// to do it now in a separate buffer.
// Allocate output storage
std::vector<aiVector3D> vNew (sMesh.mFaces.size() * 3);
std::vector<aiVector3D> vNew2;
if (sMesh.mTexCoords.size())
vNew2.resize(sMesh.mFaces.size() * 3);
for (unsigned int i = 0, base = 0; i < sMesh.mFaces.size();++i)
{
D3DS::Face& face = sMesh.mFaces[i];
// Positions
for (unsigned int a = 0; a < 3;++a,++base)
{
vNew[base] = sMesh.mPositions[face.mIndices[a]];
if (sMesh.mTexCoords.size())
vNew2[base] = sMesh.mTexCoords[face.mIndices[a]];
face.mIndices[a] = base;
}
}
sMesh.mPositions = vNew;
sMesh.mTexCoords = vNew2;
}
// ------------------------------------------------------------------------------------------------
// Convert a 3DS texture to texture keys in an aiMaterial
void CopyTexture(aiMaterial& mat, D3DS::Texture& texture, aiTextureType type)
{
// Setup the texture name
aiString tex;
tex.Set( texture.mMapName);
mat.AddProperty( &tex, AI_MATKEY_TEXTURE(type,0));
// Setup the texture blend factor
if (is_not_qnan(texture.mTextureBlend))
mat.AddProperty<ai_real>( &texture.mTextureBlend, 1, AI_MATKEY_TEXBLEND(type,0));
// Setup the texture mapping mode
int mapMode = static_cast<int>(texture.mMapMode);
mat.AddProperty<int>(&mapMode,1,AI_MATKEY_MAPPINGMODE_U(type,0));
mat.AddProperty<int>(&mapMode,1,AI_MATKEY_MAPPINGMODE_V(type,0));
// Mirroring - double the scaling values
// FIXME: this is not really correct ...
if (texture.mMapMode == aiTextureMapMode_Mirror)
{
texture.mScaleU *= 2.0;
texture.mScaleV *= 2.0;
texture.mOffsetU /= 2.0;
texture.mOffsetV /= 2.0;
}
// Setup texture UV transformations
mat.AddProperty<ai_real>(&texture.mOffsetU,5,AI_MATKEY_UVTRANSFORM(type,0));
}
// ------------------------------------------------------------------------------------------------
// Convert a 3DS material to an aiMaterial
void Discreet3DSImporter::ConvertMaterial(D3DS::Material& oldMat,
aiMaterial& mat)
{
// NOTE: Pass the background image to the viewer by bypassing the
// material system. This is an evil hack, never do it again!
if (0 != mBackgroundImage.length() && bHasBG)
{
aiString tex;
tex.Set( mBackgroundImage);
mat.AddProperty( &tex, AI_MATKEY_GLOBAL_BACKGROUND_IMAGE);
// Be sure this is only done for the first material
mBackgroundImage = std::string("");
}
// At first add the base ambient color of the scene to the material
oldMat.mAmbient.r += mClrAmbient.r;
oldMat.mAmbient.g += mClrAmbient.g;
oldMat.mAmbient.b += mClrAmbient.b;
aiString name;
name.Set( oldMat.mName);
mat.AddProperty( &name, AI_MATKEY_NAME);
// Material colors
mat.AddProperty( &oldMat.mAmbient, 1, AI_MATKEY_COLOR_AMBIENT);
mat.AddProperty( &oldMat.mDiffuse, 1, AI_MATKEY_COLOR_DIFFUSE);
mat.AddProperty( &oldMat.mSpecular, 1, AI_MATKEY_COLOR_SPECULAR);
mat.AddProperty( &oldMat.mEmissive, 1, AI_MATKEY_COLOR_EMISSIVE);
// Phong shininess and shininess strength
if (D3DS::Discreet3DS::Phong == oldMat.mShading ||
D3DS::Discreet3DS::Metal == oldMat.mShading)
{
if (!oldMat.mSpecularExponent || !oldMat.mShininessStrength)
{
oldMat.mShading = D3DS::Discreet3DS::Gouraud;
}
else
{
mat.AddProperty( &oldMat.mSpecularExponent, 1, AI_MATKEY_SHININESS);
mat.AddProperty( &oldMat.mShininessStrength, 1, AI_MATKEY_SHININESS_STRENGTH);
}
}
// Opacity
mat.AddProperty<ai_real>( &oldMat.mTransparency,1,AI_MATKEY_OPACITY);
// Bump height scaling
mat.AddProperty<ai_real>( &oldMat.mBumpHeight,1,AI_MATKEY_BUMPSCALING);
// Two sided rendering?
if (oldMat.mTwoSided)
{
int i = 1;
mat.AddProperty<int>(&i,1,AI_MATKEY_TWOSIDED);
}
// Shading mode
aiShadingMode eShading = aiShadingMode_NoShading;
switch (oldMat.mShading)
{
case D3DS::Discreet3DS::Flat:
eShading = aiShadingMode_Flat; break;
// I don't know what "Wire" shading should be,
// assume it is simple lambertian diffuse shading
case D3DS::Discreet3DS::Wire:
{
// Set the wireframe flag
unsigned int iWire = 1;
mat.AddProperty<int>( (int*)&iWire,1,AI_MATKEY_ENABLE_WIREFRAME);
}
case D3DS::Discreet3DS::Gouraud:
eShading = aiShadingMode_Gouraud; break;
// assume cook-torrance shading for metals.
case D3DS::Discreet3DS::Phong :
eShading = aiShadingMode_Phong; break;
case D3DS::Discreet3DS::Metal :
eShading = aiShadingMode_CookTorrance; break;
// FIX to workaround a warning with GCC 4 who complained
// about a missing case Blinn: here - Blinn isn't a valid
// value in the 3DS Loader, it is just needed for ASE
case D3DS::Discreet3DS::Blinn :
eShading = aiShadingMode_Blinn; break;
}
int eShading_ = static_cast<int>(eShading);
mat.AddProperty<int>(&eShading_, 1, AI_MATKEY_SHADING_MODEL);
// DIFFUSE texture
if( oldMat.sTexDiffuse.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexDiffuse, aiTextureType_DIFFUSE);
// SPECULAR texture
if( oldMat.sTexSpecular.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexSpecular, aiTextureType_SPECULAR);
// OPACITY texture
if( oldMat.sTexOpacity.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexOpacity, aiTextureType_OPACITY);
// EMISSIVE texture
if( oldMat.sTexEmissive.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexEmissive, aiTextureType_EMISSIVE);
// BUMP texture
if( oldMat.sTexBump.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexBump, aiTextureType_HEIGHT);
// SHININESS texture
if( oldMat.sTexShininess.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexShininess, aiTextureType_SHININESS);
// REFLECTION texture
if( oldMat.sTexReflective.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexReflective, aiTextureType_REFLECTION);
// Store the name of the material itself, too
if( oldMat.mName.length()) {
aiString tex;
tex.Set( oldMat.mName);
mat.AddProperty( &tex, AI_MATKEY_NAME);
}
}
// ------------------------------------------------------------------------------------------------
// Split meshes by their materials and generate output aiMesh'es
void Discreet3DSImporter::ConvertMeshes(aiScene* pcOut)
{
std::vector<aiMesh*> avOutMeshes;
avOutMeshes.reserve(mScene->mMeshes.size() * 2);
unsigned int iFaceCnt = 0,num = 0;
aiString name;
// we need to split all meshes by their materials
for (std::vector<D3DS::Mesh>::iterator i = mScene->mMeshes.begin(); i != mScene->mMeshes.end();++i) {
std::unique_ptr< std::vector<unsigned int>[] > aiSplit(new std::vector<unsigned int>[mScene->mMaterials.size()]);
name.length = ASSIMP_itoa10(name.data,num++);
unsigned int iNum = 0;
for (std::vector<unsigned int>::const_iterator a = (*i).mFaceMaterials.begin();
a != (*i).mFaceMaterials.end();++a,++iNum)
{
aiSplit[*a].push_back(iNum);
}
// now generate submeshes
for (unsigned int p = 0; p < mScene->mMaterials.size();++p)
{
if (aiSplit[p].empty()) {
continue;
}
aiMesh* meshOut = new aiMesh();
meshOut->mName = name;
meshOut->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
// be sure to setup the correct material index
meshOut->mMaterialIndex = p;
// use the color data as temporary storage
meshOut->mColors[0] = (aiColor4D*)(&*i);
avOutMeshes.push_back(meshOut);
// convert vertices
meshOut->mNumFaces = (unsigned int)aiSplit[p].size();
meshOut->mNumVertices = meshOut->mNumFaces*3;
// allocate enough storage for faces
meshOut->mFaces = new aiFace[meshOut->mNumFaces];
iFaceCnt += meshOut->mNumFaces;
meshOut->mVertices = new aiVector3D[meshOut->mNumVertices];
meshOut->mNormals = new aiVector3D[meshOut->mNumVertices];
if ((*i).mTexCoords.size())
{
meshOut->mTextureCoords[0] = new aiVector3D[meshOut->mNumVertices];
}
for (unsigned int q = 0, base = 0; q < aiSplit[p].size();++q)
{
unsigned int index = aiSplit[p][q];
aiFace& face = meshOut->mFaces[q];
face.mIndices = new unsigned int[3];
face.mNumIndices = 3;
for (unsigned int a = 0; a < 3;++a,++base)
{
unsigned int idx = (*i).mFaces[index].mIndices[a];
meshOut->mVertices[base] = (*i).mPositions[idx];
meshOut->mNormals [base] = (*i).mNormals[idx];
if ((*i).mTexCoords.size())
meshOut->mTextureCoords[0][base] = (*i).mTexCoords[idx];
face.mIndices[a] = base;
}
}
}
}
// Copy them to the output array
pcOut->mNumMeshes = (unsigned int)avOutMeshes.size();
pcOut->mMeshes = new aiMesh*[pcOut->mNumMeshes]();
for (unsigned int a = 0; a < pcOut->mNumMeshes;++a) {
pcOut->mMeshes[a] = avOutMeshes[a];
}
// We should have at least one face here
if (!iFaceCnt) {
throw DeadlyImportError("No faces loaded. The mesh is empty");
}
}
// ------------------------------------------------------------------------------------------------
// Add a node to the scenegraph and setup its final transformation
void Discreet3DSImporter::AddNodeToGraph(aiScene* pcSOut,aiNode* pcOut,
D3DS::Node* pcIn, aiMatrix4x4& /*absTrafo*/)
{
std::vector<unsigned int> iArray;
iArray.reserve(3);
aiMatrix4x4 abs;
// Find all meshes with the same name as the node
for (unsigned int a = 0; a < pcSOut->mNumMeshes;++a)
{
const D3DS::Mesh* pcMesh = (const D3DS::Mesh*)pcSOut->mMeshes[a]->mColors[0];
ai_assert(NULL != pcMesh);
if (pcIn->mName == pcMesh->mName)
iArray.push_back(a);
}
if (!iArray.empty())
{
// The matrix should be identical for all meshes with the
// same name. It HAS to be identical for all meshes .....
D3DS::Mesh* imesh = ((D3DS::Mesh*)pcSOut->mMeshes[iArray[0]]->mColors[0]);
// Compute the inverse of the transformation matrix to move the
// vertices back to their relative and local space
aiMatrix4x4 mInv = imesh->mMat, mInvTransposed = imesh->mMat;
mInv.Inverse();mInvTransposed.Transpose();
aiVector3D pivot = pcIn->vPivot;
pcOut->mNumMeshes = (unsigned int)iArray.size();
pcOut->mMeshes = new unsigned int[iArray.size()];
for (unsigned int i = 0;i < iArray.size();++i) {
const unsigned int iIndex = iArray[i];
aiMesh* const mesh = pcSOut->mMeshes[iIndex];
if (mesh->mColors[1] == NULL)
{
// Transform the vertices back into their local space
// fixme: consider computing normals after this, so we don't need to transform them
const aiVector3D* const pvEnd = mesh->mVertices + mesh->mNumVertices;
aiVector3D* pvCurrent = mesh->mVertices, *t2 = mesh->mNormals;
for (; pvCurrent != pvEnd; ++pvCurrent, ++t2) {
*pvCurrent = mInv * (*pvCurrent);
*t2 = mInvTransposed * (*t2);
}
// Handle negative transformation matrix determinant -> invert vertex x
if (imesh->mMat.Determinant() < 0.0f)
{
/* we *must* have normals */
for (pvCurrent = mesh->mVertices, t2 = mesh->mNormals; pvCurrent != pvEnd; ++pvCurrent, ++t2) {
pvCurrent->x *= -1.f;
t2->x *= -1.f;
}
ASSIMP_LOG_INFO("3DS: Flipping mesh X-Axis");
}
// Handle pivot point
if (pivot.x || pivot.y || pivot.z)
{
for (pvCurrent = mesh->mVertices; pvCurrent != pvEnd; ++pvCurrent) {
*pvCurrent -= pivot;
}
}
mesh->mColors[1] = (aiColor4D*)1;
}
else
mesh->mColors[1] = (aiColor4D*)1;
// Setup the mesh index
pcOut->mMeshes[i] = iIndex;
}
}
// Setup the name of the node
// First instance keeps its name otherwise something might break, all others will be postfixed with their instance number
if (pcIn->mInstanceNumber > 1)
{
char tmp[12];
ASSIMP_itoa10(tmp, pcIn->mInstanceNumber);
std::string tempStr = pcIn->mName + "_inst_";
tempStr += tmp;
pcOut->mName.Set(tempStr);
}
else
pcOut->mName.Set(pcIn->mName);
// Now build the transformation matrix of the node
// ROTATION
if (pcIn->aRotationKeys.size()){
// FIX to get to Assimp's quaternion conventions
for (std::vector<aiQuatKey>::iterator it = pcIn->aRotationKeys.begin(); it != pcIn->aRotationKeys.end(); ++it) {
(*it).mValue.w *= -1.f;
}
pcOut->mTransformation = aiMatrix4x4( pcIn->aRotationKeys[0].mValue.GetMatrix() );
}
else if (pcIn->aCameraRollKeys.size())
{
aiMatrix4x4::RotationZ(AI_DEG_TO_RAD(- pcIn->aCameraRollKeys[0].mValue),
pcOut->mTransformation);
}
// SCALING
aiMatrix4x4& m = pcOut->mTransformation;
if (pcIn->aScalingKeys.size())
{
const aiVector3D& v = pcIn->aScalingKeys[0].mValue;
m.a1 *= v.x; m.b1 *= v.x; m.c1 *= v.x;
m.a2 *= v.y; m.b2 *= v.y; m.c2 *= v.y;
m.a3 *= v.z; m.b3 *= v.z; m.c3 *= v.z;
}
// TRANSLATION
if (pcIn->aPositionKeys.size())
{
const aiVector3D& v = pcIn->aPositionKeys[0].mValue;
m.a4 += v.x;
m.b4 += v.y;
m.c4 += v.z;
}
// Generate animation channels for the node
if (pcIn->aPositionKeys.size() > 1 || pcIn->aRotationKeys.size() > 1 ||
pcIn->aScalingKeys.size() > 1 || pcIn->aCameraRollKeys.size() > 1 ||
pcIn->aTargetPositionKeys.size() > 1)
{
aiAnimation* anim = pcSOut->mAnimations[0];
ai_assert(nullptr != anim);
if (pcIn->aCameraRollKeys.size() > 1)
{
ASSIMP_LOG_DEBUG("3DS: Converting camera roll track ...");
// Camera roll keys - in fact they're just rotations
// around the camera's z axis. The angles are given
// in degrees (and they're clockwise).
pcIn->aRotationKeys.resize(pcIn->aCameraRollKeys.size());
for (unsigned int i = 0; i < pcIn->aCameraRollKeys.size();++i)
{
aiQuatKey& q = pcIn->aRotationKeys[i];
aiFloatKey& f = pcIn->aCameraRollKeys[i];
q.mTime = f.mTime;
// FIX to get to Assimp quaternion conventions
q.mValue = aiQuaternion(0.f,0.f,AI_DEG_TO_RAD( /*-*/ f.mValue));
}
}
#if 0
if (pcIn->aTargetPositionKeys.size() > 1)
{
ASSIMP_LOG_DEBUG("3DS: Converting target track ...");
// Camera or spot light - need to convert the separate
// target position channel to our representation
TargetAnimationHelper helper;
if (pcIn->aPositionKeys.empty())
{
// We can just pass zero here ...
helper.SetFixedMainAnimationChannel(aiVector3D());
}
else helper.SetMainAnimationChannel(&pcIn->aPositionKeys);
helper.SetTargetAnimationChannel(&pcIn->aTargetPositionKeys);
// Do the conversion
std::vector<aiVectorKey> distanceTrack;
helper.Process(&distanceTrack);
// Now add a new node as child, name it <ourName>.Target
// and assign the distance track to it. This is that the
// information where the target is and how it moves is
// not lost
D3DS::Node* nd = new D3DS::Node();
pcIn->push_back(nd);
nd->mName = pcIn->mName + ".Target";
aiNodeAnim* nda = anim->mChannels[anim->mNumChannels++] = new aiNodeAnim();
nda->mNodeName.Set(nd->mName);
nda->mNumPositionKeys = (unsigned int)distanceTrack.size();
nda->mPositionKeys = new aiVectorKey[nda->mNumPositionKeys];
::memcpy(nda->mPositionKeys,&distanceTrack[0],
sizeof(aiVectorKey)*nda->mNumPositionKeys);
}
#endif
// Cameras or lights define their transformation in their parent node and in the
// corresponding light or camera chunks. However, we read and process the latter
// to to be able to return valid cameras/lights even if no scenegraph is given.
for (unsigned int n = 0; n < pcSOut->mNumCameras;++n) {
if (pcSOut->mCameras[n]->mName == pcOut->mName) {
pcSOut->mCameras[n]->mLookAt = aiVector3D(0.f,0.f,1.f);
}
}
for (unsigned int n = 0; n < pcSOut->mNumLights;++n) {
if (pcSOut->mLights[n]->mName == pcOut->mName) {
pcSOut->mLights[n]->mDirection = aiVector3D(0.f,0.f,1.f);
}
}
// Allocate a new node anim and setup its name
aiNodeAnim* nda = anim->mChannels[anim->mNumChannels++] = new aiNodeAnim();
nda->mNodeName.Set(pcIn->mName);
// POSITION keys
if (pcIn->aPositionKeys.size() > 0)
{
nda->mNumPositionKeys = (unsigned int)pcIn->aPositionKeys.size();
nda->mPositionKeys = new aiVectorKey[nda->mNumPositionKeys];
::memcpy(nda->mPositionKeys,&pcIn->aPositionKeys[0],
sizeof(aiVectorKey)*nda->mNumPositionKeys);
}
// ROTATION keys
if (pcIn->aRotationKeys.size() > 0)
{
nda->mNumRotationKeys = (unsigned int)pcIn->aRotationKeys.size();
nda->mRotationKeys = new aiQuatKey[nda->mNumRotationKeys];
// Rotations are quaternion offsets
aiQuaternion abs1;
for (unsigned int n = 0; n < nda->mNumRotationKeys;++n)
{
const aiQuatKey& q = pcIn->aRotationKeys[n];
abs1 = (n ? abs1 * q.mValue : q.mValue);
nda->mRotationKeys[n].mTime = q.mTime;
nda->mRotationKeys[n].mValue = abs1.Normalize();
}
}
// SCALING keys
if (pcIn->aScalingKeys.size() > 0)
{
nda->mNumScalingKeys = (unsigned int)pcIn->aScalingKeys.size();
nda->mScalingKeys = new aiVectorKey[nda->mNumScalingKeys];
::memcpy(nda->mScalingKeys,&pcIn->aScalingKeys[0],
sizeof(aiVectorKey)*nda->mNumScalingKeys);
}
}
// Allocate storage for children
pcOut->mNumChildren = (unsigned int)pcIn->mChildren.size();
pcOut->mChildren = new aiNode*[pcIn->mChildren.size()];
// Recursively process all children
const unsigned int size = static_cast<unsigned int>(pcIn->mChildren.size());
for (unsigned int i = 0; i < size;++i)
{
pcOut->mChildren[i] = new aiNode();
pcOut->mChildren[i]->mParent = pcOut;
AddNodeToGraph(pcSOut,pcOut->mChildren[i],pcIn->mChildren[i],abs);
}
}
// ------------------------------------------------------------------------------------------------
// Find out how many node animation channels we'll have finally
void CountTracks(D3DS::Node* node, unsigned int& cnt)
{
//////////////////////////////////////////////////////////////////////////////
// We will never generate more than one channel for a node, so
// this is rather easy here.
if (node->aPositionKeys.size() > 1 || node->aRotationKeys.size() > 1 ||
node->aScalingKeys.size() > 1 || node->aCameraRollKeys.size() > 1 ||
node->aTargetPositionKeys.size() > 1)
{
++cnt;
// account for the additional channel for the camera/spotlight target position
if (node->aTargetPositionKeys.size() > 1)++cnt;
}
// Recursively process all children
for (unsigned int i = 0; i < node->mChildren.size();++i)
CountTracks(node->mChildren[i],cnt);
}
// ------------------------------------------------------------------------------------------------
// Generate the output node graph
void Discreet3DSImporter::GenerateNodeGraph(aiScene* pcOut)
{
pcOut->mRootNode = new aiNode();
if (0 == mRootNode->mChildren.size())
{
//////////////////////////////////////////////////////////////////////////////
// It seems the file is so messed up that it has not even a hierarchy.
// generate a flat hiearachy which looks like this:
//
// ROOT_NODE
// |
// ----------------------------------------
// | | | | |
// MESH_0 MESH_1 MESH_2 ... MESH_N CAMERA_0 ....
//
ASSIMP_LOG_WARN("No hierarchy information has been found in the file. ");
pcOut->mRootNode->mNumChildren = pcOut->mNumMeshes +
static_cast<unsigned int>(mScene->mCameras.size() + mScene->mLights.size());
pcOut->mRootNode->mChildren = new aiNode* [ pcOut->mRootNode->mNumChildren ];
pcOut->mRootNode->mName.Set("<3DSDummyRoot>");
// Build dummy nodes for all meshes
unsigned int a = 0;
for (unsigned int i = 0; i < pcOut->mNumMeshes;++i,++a)
{
aiNode* pcNode = pcOut->mRootNode->mChildren[a] = new aiNode();
pcNode->mParent = pcOut->mRootNode;
pcNode->mMeshes = new unsigned int[1];
pcNode->mMeshes[0] = i;
pcNode->mNumMeshes = 1;
// Build a name for the node
pcNode->mName.length = ai_snprintf(pcNode->mName.data, MAXLEN, "3DSMesh_%u",i);
}
// Build dummy nodes for all cameras
for (unsigned int i = 0; i < (unsigned int )mScene->mCameras.size();++i,++a)
{
aiNode* pcNode = pcOut->mRootNode->mChildren[a] = new aiNode();
pcNode->mParent = pcOut->mRootNode;
// Build a name for the node
pcNode->mName = mScene->mCameras[i]->mName;
}
// Build dummy nodes for all lights
for (unsigned int i = 0; i < (unsigned int )mScene->mLights.size();++i,++a)
{
aiNode* pcNode = pcOut->mRootNode->mChildren[a] = new aiNode();
pcNode->mParent = pcOut->mRootNode;
// Build a name for the node
pcNode->mName = mScene->mLights[i]->mName;
}
}
else
{
// First of all: find out how many scaling, rotation and translation
// animation tracks we'll have afterwards
unsigned int numChannel = 0;
CountTracks(mRootNode,numChannel);
if (numChannel)
{
// Allocate a primary animation channel
pcOut->mNumAnimations = 1;
pcOut->mAnimations = new aiAnimation*[1];
aiAnimation* anim = pcOut->mAnimations[0] = new aiAnimation();
anim->mName.Set("3DSMasterAnim");
// Allocate enough storage for all node animation channels,
// but don't set the mNumChannels member - we'll use it to
// index into the array
anim->mChannels = new aiNodeAnim*[numChannel];
}
aiMatrix4x4 m;
AddNodeToGraph(pcOut, pcOut->mRootNode, mRootNode,m);
}
// We used the first and second vertex color set to store some temporary values so we need to cleanup here
for (unsigned int a = 0; a < pcOut->mNumMeshes; ++a)
{
pcOut->mMeshes[a]->mColors[0] = NULL;
pcOut->mMeshes[a]->mColors[1] = NULL;
}
pcOut->mRootNode->mTransformation = aiMatrix4x4(
1.f,0.f,0.f,0.f,
0.f,0.f,1.f,0.f,
0.f,-1.f,0.f,0.f,
0.f,0.f,0.f,1.f) * pcOut->mRootNode->mTransformation;
// If the root node is unnamed name it "<3DSRoot>"
if (::strstr( pcOut->mRootNode->mName.data, "UNNAMED" ) ||
(pcOut->mRootNode->mName.data[0] == '$' && pcOut->mRootNode->mName.data[1] == '$') )
{
pcOut->mRootNode->mName.Set("<3DSRoot>");
}
}
// ------------------------------------------------------------------------------------------------
// Convert all meshes in the scene and generate the final output scene.
void Discreet3DSImporter::ConvertScene(aiScene* pcOut)
{
// Allocate enough storage for all output materials
pcOut->mNumMaterials = (unsigned int)mScene->mMaterials.size();
pcOut->mMaterials = new aiMaterial*[pcOut->mNumMaterials];
// ... and convert the 3DS materials to aiMaterial's
for (unsigned int i = 0; i < pcOut->mNumMaterials;++i)
{
aiMaterial* pcNew = new aiMaterial();
ConvertMaterial(mScene->mMaterials[i],*pcNew);
pcOut->mMaterials[i] = pcNew;
}
// Generate the output mesh list
ConvertMeshes(pcOut);
// Now copy all light sources to the output scene
pcOut->mNumLights = (unsigned int)mScene->mLights.size();
if (pcOut->mNumLights)
{
pcOut->mLights = new aiLight*[pcOut->mNumLights];
::memcpy(pcOut->mLights,&mScene->mLights[0],sizeof(void*)*pcOut->mNumLights);
}
// Now copy all cameras to the output scene
pcOut->mNumCameras = (unsigned int)mScene->mCameras.size();
if (pcOut->mNumCameras)
{
pcOut->mCameras = new aiCamera*[pcOut->mNumCameras];
::memcpy(pcOut->mCameras,&mScene->mCameras[0],sizeof(void*)*pcOut->mNumCameras);
}
}
#endif // !! ASSIMP_BUILD_NO_3DS_IMPORTER

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thirdparty/assimp/code/3DS/3DSExporter.cpp vendored Normal file
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/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2019, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the
following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------
*/
#ifndef ASSIMP_BUILD_NO_EXPORT
#ifndef ASSIMP_BUILD_NO_3DS_EXPORTER
#include "3DS/3DSExporter.h"
#include "3DS/3DSLoader.h"
#include "3DS/3DSHelper.h"
#include "PostProcessing/SplitLargeMeshes.h"
#include <assimp/SceneCombiner.h>
#include <assimp/StringComparison.h>
#include <assimp/IOSystem.hpp>
#include <assimp/DefaultLogger.hpp>
#include <assimp/Exporter.hpp>
#include <memory>
using namespace Assimp;
namespace Assimp {
using namespace D3DS;
namespace {
//////////////////////////////////////////////////////////////////////////////////////
// Scope utility to write a 3DS file chunk.
//
// Upon construction, the chunk header is written with the chunk type (flags)
// filled out, but the chunk size left empty. Upon destruction, the correct chunk
// size based on the then-position of the output stream cursor is filled in.
class ChunkWriter {
enum {
CHUNK_SIZE_NOT_SET = 0xdeadbeef
, SIZE_OFFSET = 2
};
public:
ChunkWriter(StreamWriterLE& writer, uint16_t chunk_type)
: writer(writer)
{
chunk_start_pos = writer.GetCurrentPos();
writer.PutU2(chunk_type);
writer.PutU4(CHUNK_SIZE_NOT_SET);
}
~ChunkWriter() {
std::size_t head_pos = writer.GetCurrentPos();
ai_assert(head_pos > chunk_start_pos);
const std::size_t chunk_size = head_pos - chunk_start_pos;
writer.SetCurrentPos(chunk_start_pos + SIZE_OFFSET);
writer.PutU4(static_cast<uint32_t>(chunk_size));
writer.SetCurrentPos(head_pos);
}
private:
StreamWriterLE& writer;
std::size_t chunk_start_pos;
};
// Return an unique name for a given |mesh| attached to |node| that
// preserves the mesh's given name if it has one. |index| is the index
// of the mesh in |aiScene::mMeshes|.
std::string GetMeshName(const aiMesh& mesh, unsigned int index, const aiNode& node) {
static const std::string underscore = "_";
char postfix[10] = {0};
ASSIMP_itoa10(postfix, index);
std::string result = node.mName.C_Str();
if (mesh.mName.length > 0) {
result += underscore + mesh.mName.C_Str();
}
return result + underscore + postfix;
}
// Return an unique name for a given |mat| with original position |index|
// in |aiScene::mMaterials|. The name preserves the original material
// name if possible.
std::string GetMaterialName(const aiMaterial& mat, unsigned int index) {
static const std::string underscore = "_";
char postfix[10] = {0};
ASSIMP_itoa10(postfix, index);
aiString mat_name;
if (AI_SUCCESS == mat.Get(AI_MATKEY_NAME, mat_name)) {
return mat_name.C_Str() + underscore + postfix;
}
return "Material" + underscore + postfix;
}
// Collect world transformations for each node
void CollectTrafos(const aiNode* node, std::map<const aiNode*, aiMatrix4x4>& trafos) {
const aiMatrix4x4& parent = node->mParent ? trafos[node->mParent] : aiMatrix4x4();
trafos[node] = parent * node->mTransformation;
for (unsigned int i = 0; i < node->mNumChildren; ++i) {
CollectTrafos(node->mChildren[i], trafos);
}
}
// Generate a flat list of the meshes (by index) assigned to each node
void CollectMeshes(const aiNode* node, std::multimap<const aiNode*, unsigned int>& meshes) {
for (unsigned int i = 0; i < node->mNumMeshes; ++i) {
meshes.insert(std::make_pair(node, node->mMeshes[i]));
}
for (unsigned int i = 0; i < node->mNumChildren; ++i) {
CollectMeshes(node->mChildren[i], meshes);
}
}
}
// ------------------------------------------------------------------------------------------------
// Worker function for exporting a scene to 3DS. Prototyped and registered in Exporter.cpp
void ExportScene3DS(const char* pFile, IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* /*pProperties*/)
{
std::shared_ptr<IOStream> outfile (pIOSystem->Open(pFile, "wb"));
if(!outfile) {
throw DeadlyExportError("Could not open output .3ds file: " + std::string(pFile));
}
// TODO: This extra copy should be avoided and all of this made a preprocess
// requirement of the 3DS exporter.
//
// 3DS meshes can be max 0xffff (16 Bit) vertices and faces, respectively.
// SplitLargeMeshes can do this, but it requires the correct limit to be set
// which is not possible with the current way of specifying preprocess steps
// in |Exporter::ExportFormatEntry|.
aiScene* scenecopy_tmp;
SceneCombiner::CopyScene(&scenecopy_tmp,pScene);
std::unique_ptr<aiScene> scenecopy(scenecopy_tmp);
SplitLargeMeshesProcess_Triangle tri_splitter;
tri_splitter.SetLimit(0xffff);
tri_splitter.Execute(scenecopy.get());
SplitLargeMeshesProcess_Vertex vert_splitter;
vert_splitter.SetLimit(0xffff);
vert_splitter.Execute(scenecopy.get());
// Invoke the actual exporter
Discreet3DSExporter exporter(outfile, scenecopy.get());
}
} // end of namespace Assimp
// ------------------------------------------------------------------------------------------------
Discreet3DSExporter:: Discreet3DSExporter(std::shared_ptr<IOStream> &outfile, const aiScene* scene)
: scene(scene)
, writer(outfile)
{
CollectTrafos(scene->mRootNode, trafos);
CollectMeshes(scene->mRootNode, meshes);
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAIN);
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_OBJMESH);
WriteMaterials();
WriteMeshes();
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MASTER_SCALE);
writer.PutF4(1.0f);
}
}
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_KEYFRAMER);
WriteHierarchy(*scene->mRootNode, -1, -1);
}
}
// ------------------------------------------------------------------------------------------------
Discreet3DSExporter::~Discreet3DSExporter() {
// empty
}
// ------------------------------------------------------------------------------------------------
int Discreet3DSExporter::WriteHierarchy(const aiNode& node, int seq, int sibling_level)
{
// 3DS scene hierarchy is serialized as in http://www.martinreddy.net/gfx/3d/3DS.spec
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_TRACKINFO);
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_TRACKOBJNAME);
// Assimp node names are unique and distinct from all mesh-node
// names we generate; thus we can use them as-is
WriteString(node.mName);
// Two unknown int16 values - it is even unclear if 0 is a safe value
// but luckily importers do not know better either.
writer.PutI4(0);
int16_t hierarchy_pos = static_cast<int16_t>(seq);
if (sibling_level != -1) {
hierarchy_pos = sibling_level;
}
// Write the hierarchy position
writer.PutI2(hierarchy_pos);
}
}
// TODO: write transformation chunks
++seq;
sibling_level = seq;
// Write all children
for (unsigned int i = 0; i < node.mNumChildren; ++i) {
seq = WriteHierarchy(*node.mChildren[i], seq, i == 0 ? -1 : sibling_level);
}
// Write all meshes as separate nodes to be able to reference the meshes by name
for (unsigned int i = 0; i < node.mNumMeshes; ++i) {
const bool first_child = node.mNumChildren == 0 && i == 0;
const unsigned int mesh_idx = node.mMeshes[i];
const aiMesh& mesh = *scene->mMeshes[mesh_idx];
ChunkWriter chunk(writer, Discreet3DS::CHUNK_TRACKINFO);
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_TRACKOBJNAME);
WriteString(GetMeshName(mesh, mesh_idx, node));
writer.PutI4(0);
writer.PutI2(static_cast<int16_t>(first_child ? seq : sibling_level));
++seq;
}
}
return seq;
}
// ------------------------------------------------------------------------------------------------
void Discreet3DSExporter::WriteMaterials()
{
for (unsigned int i = 0; i < scene->mNumMaterials; ++i) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_MATERIAL);
const aiMaterial& mat = *scene->mMaterials[i];
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_MATNAME);
const std::string& name = GetMaterialName(mat, i);
WriteString(name);
}
aiColor3D color;
if (mat.Get(AI_MATKEY_COLOR_DIFFUSE, color) == AI_SUCCESS) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_DIFFUSE);
WriteColor(color);
}
if (mat.Get(AI_MATKEY_COLOR_SPECULAR, color) == AI_SUCCESS) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_SPECULAR);
WriteColor(color);
}
if (mat.Get(AI_MATKEY_COLOR_AMBIENT, color) == AI_SUCCESS) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_AMBIENT);
WriteColor(color);
}
if (mat.Get(AI_MATKEY_COLOR_EMISSIVE, color) == AI_SUCCESS) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_SELF_ILLUM);
WriteColor(color);
}
aiShadingMode shading_mode = aiShadingMode_Flat;
if (mat.Get(AI_MATKEY_SHADING_MODEL, shading_mode) == AI_SUCCESS) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_SHADING);
Discreet3DS::shadetype3ds shading_mode_out;
switch(shading_mode) {
case aiShadingMode_Flat:
case aiShadingMode_NoShading:
shading_mode_out = Discreet3DS::Flat;
break;
case aiShadingMode_Gouraud:
case aiShadingMode_Toon:
case aiShadingMode_OrenNayar:
case aiShadingMode_Minnaert:
shading_mode_out = Discreet3DS::Gouraud;
break;
case aiShadingMode_Phong:
case aiShadingMode_Blinn:
case aiShadingMode_CookTorrance:
case aiShadingMode_Fresnel:
shading_mode_out = Discreet3DS::Phong;
break;
default:
shading_mode_out = Discreet3DS::Flat;
ai_assert(false);
};
writer.PutU2(static_cast<uint16_t>(shading_mode_out));
}
float f;
if (mat.Get(AI_MATKEY_SHININESS, f) == AI_SUCCESS) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_SHININESS);
WritePercentChunk(f);
}
if (mat.Get(AI_MATKEY_SHININESS_STRENGTH, f) == AI_SUCCESS) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_SHININESS_PERCENT);
WritePercentChunk(f);
}
int twosided;
if (mat.Get(AI_MATKEY_TWOSIDED, twosided) == AI_SUCCESS && twosided != 0) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_TWO_SIDE);
writer.PutI2(1);
}
WriteTexture(mat, aiTextureType_DIFFUSE, Discreet3DS::CHUNK_MAT_TEXTURE);
WriteTexture(mat, aiTextureType_HEIGHT, Discreet3DS::CHUNK_MAT_BUMPMAP);
WriteTexture(mat, aiTextureType_OPACITY, Discreet3DS::CHUNK_MAT_OPACMAP);
WriteTexture(mat, aiTextureType_SHININESS, Discreet3DS::CHUNK_MAT_MAT_SHINMAP);
WriteTexture(mat, aiTextureType_SPECULAR, Discreet3DS::CHUNK_MAT_SPECMAP);
WriteTexture(mat, aiTextureType_EMISSIVE, Discreet3DS::CHUNK_MAT_SELFIMAP);
WriteTexture(mat, aiTextureType_REFLECTION, Discreet3DS::CHUNK_MAT_REFLMAP);
}
}
// ------------------------------------------------------------------------------------------------
void Discreet3DSExporter::WriteTexture(const aiMaterial& mat, aiTextureType type, uint16_t chunk_flags)
{
aiString path;
aiTextureMapMode map_mode[2] = {
aiTextureMapMode_Wrap, aiTextureMapMode_Wrap
};
ai_real blend = 1.0;
if (mat.GetTexture(type, 0, &path, NULL, NULL, &blend, NULL, map_mode) != AI_SUCCESS || !path.length) {
return;
}
// TODO: handle embedded textures properly
if (path.data[0] == '*') {
ASSIMP_LOG_ERROR("Ignoring embedded texture for export: " + std::string(path.C_Str()));
return;
}
ChunkWriter chunk(writer, chunk_flags);
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAPFILE);
WriteString(path);
}
WritePercentChunk(blend);
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_MAP_TILING);
uint16_t val = 0; // WRAP
if (map_mode[0] == aiTextureMapMode_Mirror) {
val = 0x2;
}
else if (map_mode[0] == aiTextureMapMode_Decal) {
val = 0x10;
}
writer.PutU2(val);
}
// TODO: export texture transformation (i.e. UV offset, scale, rotation)
}
// ------------------------------------------------------------------------------------------------
void Discreet3DSExporter::WriteMeshes()
{
// NOTE: 3DS allows for instances. However:
// i) not all importers support reading them
// ii) instances are not as flexible as they are in assimp, in particular,
// nodes can carry (and instance) only one mesh.
//
// This exporter currently deep clones all instanced meshes, i.e. for each mesh
// attached to a node a full TRIMESH chunk is written to the file.
//
// Furthermore, the TRIMESH is transformed into world space so that it will
// appear correctly if importers don't read the scene hierarchy at all.
for (MeshesByNodeMap::const_iterator it = meshes.begin(); it != meshes.end(); ++it) {
const aiNode& node = *(*it).first;
const unsigned int mesh_idx = (*it).second;
const aiMesh& mesh = *scene->mMeshes[mesh_idx];
// This should not happen if the SLM step is correctly executed
// before the scene is handed to the exporter
ai_assert(mesh.mNumVertices <= 0xffff);
ai_assert(mesh.mNumFaces <= 0xffff);
const aiMatrix4x4& trafo = trafos[&node];
ChunkWriter chunk(writer, Discreet3DS::CHUNK_OBJBLOCK);
// Mesh name is tied to the node it is attached to so it can later be referenced
const std::string& name = GetMeshName(mesh, mesh_idx, node);
WriteString(name);
// TRIMESH chunk
ChunkWriter chunk2(writer, Discreet3DS::CHUNK_TRIMESH);
// Vertices in world space
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_VERTLIST);
const uint16_t count = static_cast<uint16_t>(mesh.mNumVertices);
writer.PutU2(count);
for (unsigned int i = 0; i < mesh.mNumVertices; ++i) {
const aiVector3D& v = trafo * mesh.mVertices[i];
writer.PutF4(v.x);
writer.PutF4(v.y);
writer.PutF4(v.z);
}
}
// UV coordinates
if (mesh.HasTextureCoords(0)) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAPLIST);
const uint16_t count = static_cast<uint16_t>(mesh.mNumVertices);
writer.PutU2(count);
for (unsigned int i = 0; i < mesh.mNumVertices; ++i) {
const aiVector3D& v = mesh.mTextureCoords[0][i];
writer.PutF4(v.x);
writer.PutF4(v.y);
}
}
// Faces (indices)
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_FACELIST);
ai_assert(mesh.mNumFaces <= 0xffff);
// Count triangles, discard lines and points
uint16_t count = 0;
for (unsigned int i = 0; i < mesh.mNumFaces; ++i) {
const aiFace& f = mesh.mFaces[i];
if (f.mNumIndices < 3) {
continue;
}
// TRIANGULATE step is a pre-requisite so we should not see polys here
ai_assert(f.mNumIndices == 3);
++count;
}
writer.PutU2(count);
for (unsigned int i = 0; i < mesh.mNumFaces; ++i) {
const aiFace& f = mesh.mFaces[i];
if (f.mNumIndices < 3) {
continue;
}
for (unsigned int j = 0; j < 3; ++j) {
ai_assert(f.mIndices[j] <= 0xffff);
writer.PutI2(static_cast<uint16_t>(f.mIndices[j]));
}
// Edge visibility flag
writer.PutI2(0x0);
}
// TODO: write smoothing groups (CHUNK_SMOOLIST)
WriteFaceMaterialChunk(mesh);
}
// Transformation matrix by which the mesh vertices have been pre-transformed with.
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_TRMATRIX);
for (unsigned int r = 0; r < 4; ++r) {
for (unsigned int c = 0; c < 3; ++c) {
writer.PutF4(trafo[r][c]);
}
}
}
}
}
// ------------------------------------------------------------------------------------------------
void Discreet3DSExporter::WriteFaceMaterialChunk(const aiMesh& mesh)
{
ChunkWriter chunk(writer, Discreet3DS::CHUNK_FACEMAT);
const std::string& name = GetMaterialName(*scene->mMaterials[mesh.mMaterialIndex], mesh.mMaterialIndex);
WriteString(name);
// Because assimp splits meshes by material, only a single
// FACEMAT chunk needs to be written
ai_assert(mesh.mNumFaces <= 0xffff);
const uint16_t count = static_cast<uint16_t>(mesh.mNumFaces);
writer.PutU2(count);
for (unsigned int i = 0; i < mesh.mNumFaces; ++i) {
writer.PutU2(static_cast<uint16_t>(i));
}
}
// ------------------------------------------------------------------------------------------------
void Discreet3DSExporter::WriteString(const std::string& s) {
for (std::string::const_iterator it = s.begin(); it != s.end(); ++it) {
writer.PutI1(*it);
}
writer.PutI1('\0');
}
// ------------------------------------------------------------------------------------------------
void Discreet3DSExporter::WriteString(const aiString& s) {
for (std::size_t i = 0; i < s.length; ++i) {
writer.PutI1(s.data[i]);
}
writer.PutI1('\0');
}
// ------------------------------------------------------------------------------------------------
void Discreet3DSExporter::WriteColor(const aiColor3D& color) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_RGBF);
writer.PutF4(color.r);
writer.PutF4(color.g);
writer.PutF4(color.b);
}
// ------------------------------------------------------------------------------------------------
void Discreet3DSExporter::WritePercentChunk(float f) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_PERCENTF);
writer.PutF4(f);
}
// ------------------------------------------------------------------------------------------------
void Discreet3DSExporter::WritePercentChunk(double f) {
ChunkWriter chunk(writer, Discreet3DS::CHUNK_PERCENTD);
writer.PutF8(f);
}
#endif // ASSIMP_BUILD_NO_3DS_EXPORTER
#endif // ASSIMP_BUILD_NO_EXPORT

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/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2019, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the
following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------
*/
/** @file 3DSExporter.h
* 3DS Exporter Main Header
*/
#ifndef AI_3DSEXPORTER_H_INC
#define AI_3DSEXPORTER_H_INC
#include <map>
#include <memory>
#include <assimp/StreamWriter.h>
#include <assimp/material.h>
struct aiScene;
struct aiNode;
struct aiMaterial;
struct aiMesh;
namespace Assimp
{
// ------------------------------------------------------------------------------------------------
/**
* @brief Helper class to export a given scene to a 3DS file.
*/
// ------------------------------------------------------------------------------------------------
class Discreet3DSExporter {
public:
Discreet3DSExporter(std::shared_ptr<IOStream> &outfile, const aiScene* pScene);
~Discreet3DSExporter();
private:
void WriteMeshes();
void WriteMaterials();
void WriteTexture(const aiMaterial& mat, aiTextureType type, uint16_t chunk_flags);
void WriteFaceMaterialChunk(const aiMesh& mesh);
int WriteHierarchy(const aiNode& node, int level, int sibling_level);
void WriteString(const std::string& s);
void WriteString(const aiString& s);
void WriteColor(const aiColor3D& color);
void WritePercentChunk(float f);
void WritePercentChunk(double f);
private:
const aiScene* const scene;
StreamWriterLE writer;
std::map<const aiNode*, aiMatrix4x4> trafos;
typedef std::multimap<const aiNode*, unsigned int> MeshesByNodeMap;
MeshesByNodeMap meshes;
};
} // Namespace Assimp
#endif // AI_3DSEXPORTER_H_INC

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/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2019, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the
following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------
*/
/** @file Defines helper data structures for the import of 3DS files */
#ifndef AI_3DSFILEHELPER_H_INC
#define AI_3DSFILEHELPER_H_INC
#include <assimp/SpatialSort.h>
#include <assimp/SmoothingGroups.h>
#include <assimp/StringUtils.h>
#include <assimp/qnan.h>
#include <assimp/material.h>
#include <assimp/camera.h>
#include <assimp/light.h>
#include <assimp/anim.h>
#include <stdio.h> //sprintf
namespace Assimp {
namespace D3DS {
#include <assimp/Compiler/pushpack1.h>
// ---------------------------------------------------------------------------
/** Discreet3DS class: Helper class for loading 3ds files. Defines chunks
* and data structures.
*/
class Discreet3DS {
private:
Discreet3DS() AI_NO_EXCEPT {
// empty
}
~Discreet3DS() {
// empty
}
public:
//! data structure for a single chunk in a .3ds file
struct Chunk {
uint16_t Flag;
uint32_t Size;
} PACK_STRUCT;
//! Used for shading field in material3ds structure
//! From AutoDesk 3ds SDK
typedef enum
{
// translated to gouraud shading with wireframe active
Wire = 0x0,
// if this material is set, no vertex normals will
// be calculated for the model. Face normals + gouraud
Flat = 0x1,
// standard gouraud shading
Gouraud = 0x2,
// phong shading
Phong = 0x3,
// cooktorrance or anistropic phong shading ...
// the exact meaning is unknown, if you know it
// feel free to tell me ;-)
Metal = 0x4,
// required by the ASE loader
Blinn = 0x5
} shadetype3ds;
// Flags for animated keys
enum
{
KEY_USE_TENS = 0x1,
KEY_USE_CONT = 0x2,
KEY_USE_BIAS = 0x4,
KEY_USE_EASE_TO = 0x8,
KEY_USE_EASE_FROM = 0x10
} ;
enum
{
// ********************************************************************
// Basic chunks which can be found everywhere in the file
CHUNK_VERSION = 0x0002,
CHUNK_RGBF = 0x0010, // float4 R; float4 G; float4 B
CHUNK_RGBB = 0x0011, // int1 R; int1 G; int B
// Linear color values (gamma = 2.2?)
CHUNK_LINRGBF = 0x0013, // float4 R; float4 G; float4 B
CHUNK_LINRGBB = 0x0012, // int1 R; int1 G; int B
CHUNK_PERCENTW = 0x0030, // int2 percentage
CHUNK_PERCENTF = 0x0031, // float4 percentage
CHUNK_PERCENTD = 0x0032, // float8 percentage
// ********************************************************************
// Prj master chunk
CHUNK_PRJ = 0xC23D,
// MDLI master chunk
CHUNK_MLI = 0x3DAA,
// Primary main chunk of the .3ds file
CHUNK_MAIN = 0x4D4D,
// Mesh main chunk
CHUNK_OBJMESH = 0x3D3D,
// Specifies the background color of the .3ds file
// This is passed through the material system for
// viewing purposes.
CHUNK_BKGCOLOR = 0x1200,
// Specifies the ambient base color of the scene.
// This is added to all materials in the file
CHUNK_AMBCOLOR = 0x2100,
// Specifies the background image for the whole scene
// This value is passed through the material system
// to the viewer
CHUNK_BIT_MAP = 0x1100,
CHUNK_BIT_MAP_EXISTS = 0x1101,
// ********************************************************************
// Viewport related stuff. Ignored
CHUNK_DEFAULT_VIEW = 0x3000,
CHUNK_VIEW_TOP = 0x3010,
CHUNK_VIEW_BOTTOM = 0x3020,
CHUNK_VIEW_LEFT = 0x3030,
CHUNK_VIEW_RIGHT = 0x3040,
CHUNK_VIEW_FRONT = 0x3050,
CHUNK_VIEW_BACK = 0x3060,
CHUNK_VIEW_USER = 0x3070,
CHUNK_VIEW_CAMERA = 0x3080,
// ********************************************************************
// Mesh chunks
CHUNK_OBJBLOCK = 0x4000,
CHUNK_TRIMESH = 0x4100,
CHUNK_VERTLIST = 0x4110,
CHUNK_VERTFLAGS = 0x4111,
CHUNK_FACELIST = 0x4120,
CHUNK_FACEMAT = 0x4130,
CHUNK_MAPLIST = 0x4140,
CHUNK_SMOOLIST = 0x4150,
CHUNK_TRMATRIX = 0x4160,
CHUNK_MESHCOLOR = 0x4165,
CHUNK_TXTINFO = 0x4170,
CHUNK_LIGHT = 0x4600,
CHUNK_CAMERA = 0x4700,
CHUNK_HIERARCHY = 0x4F00,
// Specifies the global scaling factor. This is applied
// to the root node's transformation matrix
CHUNK_MASTER_SCALE = 0x0100,
// ********************************************************************
// Material chunks
CHUNK_MAT_MATERIAL = 0xAFFF,
// asciiz containing the name of the material
CHUNK_MAT_MATNAME = 0xA000,
CHUNK_MAT_AMBIENT = 0xA010, // followed by color chunk
CHUNK_MAT_DIFFUSE = 0xA020, // followed by color chunk
CHUNK_MAT_SPECULAR = 0xA030, // followed by color chunk
// Specifies the shininess of the material
// followed by percentage chunk
CHUNK_MAT_SHININESS = 0xA040,
CHUNK_MAT_SHININESS_PERCENT = 0xA041 ,
// Specifies the shading mode to be used
// followed by a short
CHUNK_MAT_SHADING = 0xA100,
// NOTE: Emissive color (self illumination) seems not
// to be a color but a single value, type is unknown.
// Make the parser accept both of them.
// followed by percentage chunk (?)
CHUNK_MAT_SELF_ILLUM = 0xA080,
// Always followed by percentage chunk (?)
CHUNK_MAT_SELF_ILPCT = 0xA084,
// Always followed by percentage chunk
CHUNK_MAT_TRANSPARENCY = 0xA050,
// Diffuse texture channel 0
CHUNK_MAT_TEXTURE = 0xA200,
// Contains opacity information for each texel
CHUNK_MAT_OPACMAP = 0xA210,
// Contains a reflection map to be used to reflect
// the environment. This is partially supported.
CHUNK_MAT_REFLMAP = 0xA220,
// Self Illumination map (emissive colors)
CHUNK_MAT_SELFIMAP = 0xA33d,
// Bumpmap. Not specified whether it is a heightmap
// or a normal map. Assme it is a heightmap since
// artist normally prefer this format.
CHUNK_MAT_BUMPMAP = 0xA230,
// Specular map. Seems to influence the specular color
CHUNK_MAT_SPECMAP = 0xA204,
// Holds shininess data.
CHUNK_MAT_MAT_SHINMAP = 0xA33C,
// Scaling in U/V direction.
// (need to gen separate UV coordinate set
// and do this by hand)
CHUNK_MAT_MAP_USCALE = 0xA354,
CHUNK_MAT_MAP_VSCALE = 0xA356,
// Translation in U/V direction.
// (need to gen separate UV coordinate set
// and do this by hand)
CHUNK_MAT_MAP_UOFFSET = 0xA358,
CHUNK_MAT_MAP_VOFFSET = 0xA35a,
// UV-coordinates rotation around the z-axis
// Assumed to be in radians.
CHUNK_MAT_MAP_ANG = 0xA35C,
// Tiling flags for 3DS files
CHUNK_MAT_MAP_TILING = 0xa351,
// Specifies the file name of a texture
CHUNK_MAPFILE = 0xA300,
// Specifies whether a materail requires two-sided rendering
CHUNK_MAT_TWO_SIDE = 0xA081,
// ********************************************************************
// Main keyframer chunk. Contains translation/rotation/scaling data
CHUNK_KEYFRAMER = 0xB000,
// Supported sub chunks
CHUNK_TRACKINFO = 0xB002,
CHUNK_TRACKOBJNAME = 0xB010,
CHUNK_TRACKDUMMYOBJNAME = 0xB011,
CHUNK_TRACKPIVOT = 0xB013,
CHUNK_TRACKPOS = 0xB020,
CHUNK_TRACKROTATE = 0xB021,
CHUNK_TRACKSCALE = 0xB022,
// ********************************************************************
// Keyframes for various other stuff in the file
// Partially ignored
CHUNK_AMBIENTKEY = 0xB001,
CHUNK_TRACKMORPH = 0xB026,
CHUNK_TRACKHIDE = 0xB029,
CHUNK_OBJNUMBER = 0xB030,
CHUNK_TRACKCAMERA = 0xB003,
CHUNK_TRACKFOV = 0xB023,
CHUNK_TRACKROLL = 0xB024,
CHUNK_TRACKCAMTGT = 0xB004,
CHUNK_TRACKLIGHT = 0xB005,
CHUNK_TRACKLIGTGT = 0xB006,
CHUNK_TRACKSPOTL = 0xB007,
CHUNK_FRAMES = 0xB008,
// ********************************************************************
// light sub-chunks
CHUNK_DL_OFF = 0x4620,
CHUNK_DL_OUTER_RANGE = 0x465A,
CHUNK_DL_INNER_RANGE = 0x4659,
CHUNK_DL_MULTIPLIER = 0x465B,
CHUNK_DL_EXCLUDE = 0x4654,
CHUNK_DL_ATTENUATE = 0x4625,
CHUNK_DL_SPOTLIGHT = 0x4610,
// camera sub-chunks
CHUNK_CAM_RANGES = 0x4720
};
};
// ---------------------------------------------------------------------------
/** Helper structure representing a 3ds mesh face */
struct Face : public FaceWithSmoothingGroup
{
};
// ---------------------------------------------------------------------------
/** Helper structure representing a texture */
struct Texture {
//! Default constructor
Texture() AI_NO_EXCEPT
: mOffsetU (0.0)
, mOffsetV (0.0)
, mScaleU (1.0)
, mScaleV (1.0)
, mRotation (0.0)
, mMapMode (aiTextureMapMode_Wrap)
, bPrivate()
, iUVSrc (0) {
mTextureBlend = get_qnan();
}
//! Specifies the blend factor for the texture
ai_real mTextureBlend;
//! Specifies the filename of the texture
std::string mMapName;
//! Specifies texture coordinate offsets/scaling/rotations
ai_real mOffsetU;
ai_real mOffsetV;
ai_real mScaleU;
ai_real mScaleV;
ai_real mRotation;
//! Specifies the mapping mode to be used for the texture
aiTextureMapMode mMapMode;
//! Used internally
bool bPrivate;
int iUVSrc;
};
#include <assimp/Compiler/poppack1.h>
// ---------------------------------------------------------------------------
/** Helper structure representing a 3ds material */
struct Material
{
//! Default constructor has been deleted
Material() = delete;
//! Constructor with explicit name
explicit Material(const std::string &name)
: mName(name)
, mDiffuse ( ai_real( 0.6 ), ai_real( 0.6 ), ai_real( 0.6 ) ) // FIX ... we won't want object to be black
, mSpecularExponent ( ai_real( 0.0 ) )
, mShininessStrength ( ai_real( 1.0 ) )
, mShading(Discreet3DS::Gouraud)
, mTransparency ( ai_real( 1.0 ) )
, mBumpHeight ( ai_real( 1.0 ) )
, mTwoSided (false)
{
}
Material(const Material &other) = default;
Material &operator=(const Material &other) = default;
//! Move constructor. This is explicitly written because MSVC doesn't support defaulting it
Material(Material &&other) AI_NO_EXCEPT
: mName(std::move(other.mName))
, mDiffuse(std::move(other.mDiffuse))
, mSpecularExponent(std::move(other.mSpecularExponent))
, mShininessStrength(std::move(other.mShininessStrength))
, mSpecular(std::move(other.mSpecular))
, mAmbient(std::move(other.mAmbient))
, mShading(std::move(other.mShading))
, mTransparency(std::move(other.mTransparency))
, sTexDiffuse(std::move(other.sTexDiffuse))
, sTexOpacity(std::move(other.sTexOpacity))
, sTexSpecular(std::move(other.sTexSpecular))
, sTexReflective(std::move(other.sTexReflective))
, sTexBump(std::move(other.sTexBump))
, sTexEmissive(std::move(other.sTexEmissive))
, sTexShininess(std::move(other.sTexShininess))
, mBumpHeight(std::move(other.mBumpHeight))
, mEmissive(std::move(other.mEmissive))
, sTexAmbient(std::move(other.sTexAmbient))
, mTwoSided(std::move(other.mTwoSided))
{
}
Material &operator=(Material &&other) AI_NO_EXCEPT {
if (this == &other) {
return *this;
}
mName = std::move(other.mName);
mDiffuse = std::move(other.mDiffuse);
mSpecularExponent = std::move(other.mSpecularExponent);
mShininessStrength = std::move(other.mShininessStrength),
mSpecular = std::move(other.mSpecular);
mAmbient = std::move(other.mAmbient);
mShading = std::move(other.mShading);
mTransparency = std::move(other.mTransparency);
sTexDiffuse = std::move(other.sTexDiffuse);
sTexOpacity = std::move(other.sTexOpacity);
sTexSpecular = std::move(other.sTexSpecular);
sTexReflective = std::move(other.sTexReflective);
sTexBump = std::move(other.sTexBump);
sTexEmissive = std::move(other.sTexEmissive);
sTexShininess = std::move(other.sTexShininess);
mBumpHeight = std::move(other.mBumpHeight);
mEmissive = std::move(other.mEmissive);
sTexAmbient = std::move(other.sTexAmbient);
mTwoSided = std::move(other.mTwoSided);
return *this;
}
virtual ~Material() {}
//! Name of the material
std::string mName;
//! Diffuse color of the material
aiColor3D mDiffuse;
//! Specular exponent
ai_real mSpecularExponent;
//! Shininess strength, in percent
ai_real mShininessStrength;
//! Specular color of the material
aiColor3D mSpecular;
//! Ambient color of the material
aiColor3D mAmbient;
//! Shading type to be used
Discreet3DS::shadetype3ds mShading;
//! Opacity of the material
ai_real mTransparency;
//! Diffuse texture channel
Texture sTexDiffuse;
//! Opacity texture channel
Texture sTexOpacity;
//! Specular texture channel
Texture sTexSpecular;
//! Reflective texture channel
Texture sTexReflective;
//! Bump texture channel
Texture sTexBump;
//! Emissive texture channel
Texture sTexEmissive;
//! Shininess texture channel
Texture sTexShininess;
//! Scaling factor for the bump values
ai_real mBumpHeight;
//! Emissive color
aiColor3D mEmissive;
//! Ambient texture channel
//! (used by the ASE format)
Texture sTexAmbient;
//! True if the material must be rendered from two sides
bool mTwoSided;
};
// ---------------------------------------------------------------------------
/** Helper structure to represent a 3ds file mesh */
struct Mesh : public MeshWithSmoothingGroups<D3DS::Face>
{
//! Default constructor has been deleted
Mesh() = delete;
//! Constructor with explicit name
explicit Mesh(const std::string &name)
: mName(name)
{
}
//! Name of the mesh
std::string mName;
//! Texture coordinates
std::vector<aiVector3D> mTexCoords;
//! Face materials
std::vector<unsigned int> mFaceMaterials;
//! Local transformation matrix
aiMatrix4x4 mMat;
};
// ---------------------------------------------------------------------------
/** Float key - quite similar to aiVectorKey and aiQuatKey. Both are in the
C-API, so it would be difficult to make them a template. */
struct aiFloatKey
{
double mTime; ///< The time of this key
ai_real mValue; ///< The value of this key
#ifdef __cplusplus
// time is not compared
bool operator == (const aiFloatKey& o) const
{return o.mValue == this->mValue;}
bool operator != (const aiFloatKey& o) const
{return o.mValue != this->mValue;}
// Only time is compared. This operator is defined
// for use with std::sort
bool operator < (const aiFloatKey& o) const
{return mTime < o.mTime;}
bool operator > (const aiFloatKey& o) const
{return mTime > o.mTime;}
#endif
};
// ---------------------------------------------------------------------------
/** Helper structure to represent a 3ds file node */
struct Node
{
Node() = delete;
explicit Node(const std::string &name)
: mParent(NULL)
, mName(name)
, mInstanceNumber(0)
, mHierarchyPos (0)
, mHierarchyIndex (0)
, mInstanceCount (1)
{
aRotationKeys.reserve (20);
aPositionKeys.reserve (20);
aScalingKeys.reserve (20);
}
~Node()
{
for (unsigned int i = 0; i < mChildren.size();++i)
delete mChildren[i];
}
//! Pointer to the parent node
Node* mParent;
//! Holds all child nodes
std::vector<Node*> mChildren;
//! Name of the node
std::string mName;
//! InstanceNumber of the node
int32_t mInstanceNumber;
//! Dummy nodes: real name to be combined with the $$$DUMMY
std::string mDummyName;
//! Position of the node in the hierarchy (tree depth)
int16_t mHierarchyPos;
//! Index of the node
int16_t mHierarchyIndex;
//! Rotation keys loaded from the file
std::vector<aiQuatKey> aRotationKeys;
//! Position keys loaded from the file
std::vector<aiVectorKey> aPositionKeys;
//! Scaling keys loaded from the file
std::vector<aiVectorKey> aScalingKeys;
// For target lights (spot lights and directional lights):
// The position of the target
std::vector< aiVectorKey > aTargetPositionKeys;
// For cameras: the camera roll angle
std::vector< aiFloatKey > aCameraRollKeys;
//! Pivot position loaded from the file
aiVector3D vPivot;
//instance count, will be kept only for the first node
int32_t mInstanceCount;
//! Add a child node, setup the right parent node for it
//! \param pc Node to be 'adopted'
inline Node& push_back(Node* pc)
{
mChildren.push_back(pc);
pc->mParent = this;
return *this;
}
};
// ---------------------------------------------------------------------------
/** Helper structure analogue to aiScene */
struct Scene
{
//! List of all materials loaded
//! NOTE: 3ds references materials globally
std::vector<Material> mMaterials;
//! List of all meshes loaded
std::vector<Mesh> mMeshes;
//! List of all cameras loaded
std::vector<aiCamera*> mCameras;
//! List of all lights loaded
std::vector<aiLight*> mLights;
//! Pointer to the root node of the scene
// --- moved to main class
// Node* pcRootNode;
};
} // end of namespace D3DS
} // end of namespace Assimp
#endif // AI_XFILEHELPER_H_INC

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/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
Copyright (c) 2006-2019, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the
following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------
*/
/** @file 3DSLoader.h
* @brief 3DS File format loader
*/
#ifndef AI_3DSIMPORTER_H_INC
#define AI_3DSIMPORTER_H_INC
#include <assimp/BaseImporter.h>
#include <assimp/types.h>
#ifndef ASSIMP_BUILD_NO_3DS_IMPORTER
#include "3DSHelper.h"
#include <assimp/StreamReader.h>
struct aiNode;
namespace Assimp {
using namespace D3DS;
// ---------------------------------------------------------------------------------
/** Importer class for 3D Studio r3 and r4 3DS files
*/
class Discreet3DSImporter : public BaseImporter
{
public:
Discreet3DSImporter();
~Discreet3DSImporter();
public:
// -------------------------------------------------------------------
/** Returns whether the class can handle the format of the given file.
* See BaseImporter::CanRead() for details.
*/
bool CanRead( const std::string& pFile, IOSystem* pIOHandler,
bool checkSig) const;
// -------------------------------------------------------------------
/** Called prior to ReadFile().
* The function is a request to the importer to update its configuration
* basing on the Importer's configuration property list.
*/
void SetupProperties(const Importer* pImp);
protected:
// -------------------------------------------------------------------
/** Return importer meta information.
* See #BaseImporter::GetInfo for the details
*/
const aiImporterDesc* GetInfo () const;
// -------------------------------------------------------------------
/** Imports the given file into the given scene structure.
* See BaseImporter::InternReadFile() for details
*/
void InternReadFile( const std::string& pFile, aiScene* pScene,
IOSystem* pIOHandler);
// -------------------------------------------------------------------
/** Converts a temporary material to the outer representation
*/
void ConvertMaterial(D3DS::Material& p_cMat,
aiMaterial& p_pcOut);
// -------------------------------------------------------------------
/** Read a chunk
*
* @param pcOut Receives the current chunk
*/
void ReadChunk(Discreet3DS::Chunk* pcOut);
// -------------------------------------------------------------------
/** Parse a percentage chunk. mCurrent will point to the next
* chunk behind afterwards. If no percentage chunk is found
* QNAN is returned.
*/
ai_real ParsePercentageChunk();
// -------------------------------------------------------------------
/** Parse a color chunk. mCurrent will point to the next
* chunk behind afterwards. If no color chunk is found
* QNAN is returned in all members.
*/
void ParseColorChunk(aiColor3D* p_pcOut,
bool p_bAcceptPercent = true);
// -------------------------------------------------------------------
/** Skip a chunk in the file
*/
void SkipChunk();
// -------------------------------------------------------------------
/** Generate the nodegraph
*/
void GenerateNodeGraph(aiScene* pcOut);
// -------------------------------------------------------------------
/** Parse a main top-level chunk in the file
*/
void ParseMainChunk();
// -------------------------------------------------------------------
/** Parse a top-level chunk in the file
*/
void ParseChunk(const char* name, unsigned int num);
// -------------------------------------------------------------------
/** Parse a top-level editor chunk in the file
*/
void ParseEditorChunk();
// -------------------------------------------------------------------
/** Parse a top-level object chunk in the file
*/
void ParseObjectChunk();
// -------------------------------------------------------------------
/** Parse a material chunk in the file
*/
void ParseMaterialChunk();
// -------------------------------------------------------------------
/** Parse a mesh chunk in the file
*/
void ParseMeshChunk();
// -------------------------------------------------------------------
/** Parse a light chunk in the file
*/
void ParseLightChunk();
// -------------------------------------------------------------------
/** Parse a camera chunk in the file
*/
void ParseCameraChunk();
// -------------------------------------------------------------------
/** Parse a face list chunk in the file
*/
void ParseFaceChunk();
// -------------------------------------------------------------------
/** Parse a keyframe chunk in the file
*/
void ParseKeyframeChunk();
// -------------------------------------------------------------------
/** Parse a hierarchy chunk in the file
*/
void ParseHierarchyChunk(uint16_t parent);
// -------------------------------------------------------------------
/** Parse a texture chunk in the file
*/
void ParseTextureChunk(D3DS::Texture* pcOut);
// -------------------------------------------------------------------
/** Convert the meshes in the file
*/
void ConvertMeshes(aiScene* pcOut);
// -------------------------------------------------------------------
/** Replace the default material in the scene
*/
void ReplaceDefaultMaterial();
// -------------------------------------------------------------------
/** Convert the whole scene
*/
void ConvertScene(aiScene* pcOut);
// -------------------------------------------------------------------
/** generate unique vertices for a mesh
*/
void MakeUnique(D3DS::Mesh& sMesh);
// -------------------------------------------------------------------
/** Add a node to the node graph
*/
void AddNodeToGraph(aiScene* pcSOut,aiNode* pcOut,D3DS::Node* pcIn,
aiMatrix4x4& absTrafo);
// -------------------------------------------------------------------
/** Search for a node in the graph.
* Called recursively
*/
void InverseNodeSearch(D3DS::Node* pcNode,D3DS::Node* pcCurrent);
// -------------------------------------------------------------------
/** Apply the master scaling factor to the mesh
*/
void ApplyMasterScale(aiScene* pScene);
// -------------------------------------------------------------------
/** Clamp all indices in the file to a valid range
*/
void CheckIndices(D3DS::Mesh& sMesh);
// -------------------------------------------------------------------
/** Skip the TCB info in a track key
*/
void SkipTCBInfo();
protected:
/** Stream to read from */
StreamReaderLE* stream;
/** Last touched node index */
short mLastNodeIndex;
/** Current node, root node */
D3DS::Node* mCurrentNode, *mRootNode;
/** Scene under construction */
D3DS::Scene* mScene;
/** Ambient base color of the scene */
aiColor3D mClrAmbient;
/** Master scaling factor of the scene */
ai_real mMasterScale;
/** Path to the background image of the scene */
std::string mBackgroundImage;
bool bHasBG;
/** true if PRJ file */
bool bIsPrj;
};
} // end of namespace Assimp
#endif // !! ASSIMP_BUILD_NO_3DS_IMPORTER
#endif // AI_3DSIMPORTER_H_INC