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Externalize Assimp

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This commit is contained in:
Dane Johnson
2021-02-05 11:22:37 -06:00
parent d84681c23a
commit 35d18c0f16
1032 changed files with 42 additions and 441932 deletions
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1675
thirdparty/assimp/code/Collada/ColladaExporter.cpp vendored
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thirdparty/assimp/code/Collada/ColladaExporter.h vendored
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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 ColladaExporter.h
* Declares the exporter class to write a scene to a Collada file
*/
#ifndef AI_COLLADAEXPORTER_H_INC
#define AI_COLLADAEXPORTER_H_INC
#include <assimp/ai_assert.h>
#include <assimp/material.h>
#include <assimp/mesh.h>
#include <assimp/light.h>
#include <assimp/Exporter.hpp>
#include <sstream>
#include <vector>
#include <map>
#include <assimp/StringUtils.h>
struct aiScene;
struct aiNode;
namespace Assimp
{
/// Helper class to export a given scene to a Collada file. Just for my personal
/// comfort when implementing it.
class ColladaExporter
{
public:
/// Constructor for a specific scene to export
ColladaExporter( const aiScene* pScene, IOSystem* pIOSystem, const std::string& path, const std::string& file);
/// Destructor
virtual ~ColladaExporter();
protected:
/// Starts writing the contents
void WriteFile();
/// Writes the asset header
void WriteHeader();
/// Writes the embedded textures
void WriteTextures();
/// Writes the material setup
void WriteMaterials();
/// Writes the cameras library
void WriteCamerasLibrary();
// Write a camera entry
void WriteCamera(size_t pIndex);
/// Writes the cameras library
void WriteLightsLibrary();
// Write a camera entry
void WriteLight(size_t pIndex);
void WritePointLight(const aiLight *const light);
void WriteDirectionalLight(const aiLight *const light);
void WriteSpotLight(const aiLight *const light);
void WriteAmbienttLight(const aiLight *const light);
/// Writes the controller library
void WriteControllerLibrary();
/// Writes a skin controller of the given mesh
void WriteController( size_t pIndex);
/// Writes the geometry library
void WriteGeometryLibrary();
/// Writes the given mesh
void WriteGeometry( size_t pIndex);
//enum FloatDataType { FloatType_Vector, FloatType_TexCoord2, FloatType_TexCoord3, FloatType_Color, FloatType_Mat4x4, FloatType_Weight };
// customized to add animation related type
enum FloatDataType { FloatType_Vector, FloatType_TexCoord2, FloatType_TexCoord3, FloatType_Color, FloatType_Mat4x4, FloatType_Weight, FloatType_Time };
/// Writes a float array of the given type
void WriteFloatArray( const std::string& pIdString, FloatDataType pType, const ai_real* pData, size_t pElementCount);
/// Writes the scene library
void WriteSceneLibrary();
// customized, Writes the animation library
void WriteAnimationsLibrary();
void WriteAnimationLibrary( size_t pIndex);
std::string mFoundSkeletonRootNodeID = "skeleton_root"; // will be replaced by found node id in the WriteNode call.
/// Recursively writes the given node
void WriteNode( const aiScene* scene, aiNode* pNode);
/// Enters a new xml element, which increases the indentation
void PushTag() { startstr.append( " "); }
/// Leaves an element, decreasing the indentation
void PopTag() {
ai_assert( startstr.length() > 1);
startstr.erase( startstr.length() - 2);
}
/// Creates a mesh ID for the given mesh
std::string GetMeshId( size_t pIndex) const {
return std::string( "meshId" ) + to_string(pIndex);
}
public:
/// Stringstream to write all output into
std::stringstream mOutput;
/// The IOSystem for output
IOSystem* mIOSystem;
/// Path of the directory where the scene will be exported
const std::string mPath;
/// Name of the file (without extension) where the scene will be exported
const std::string mFile;
/// The scene to be written
const aiScene* mScene;
bool mSceneOwned;
/// current line start string, contains the current indentation for simple stream insertion
std::string startstr;
/// current line end string for simple stream insertion
std::string endstr;
// pair of color and texture - texture precedences color
struct Surface
{
bool exist;
aiColor4D color;
std::string texture;
size_t channel;
Surface() { exist = false; channel = 0; }
};
struct Property
{
bool exist;
ai_real value;
Property()
: exist(false)
, value(0.0)
{}
};
// summarize a material in an convenient way.
struct Material
{
std::string name;
std::string shading_model;
Surface ambient, diffuse, specular, emissive, reflective, transparent, normal;
Property shininess, transparency, index_refraction;
Material() {}
};
std::vector<Material> materials;
std::map<unsigned int, std::string> textures;
public:
/// Dammit C++ - y u no compile two-pass? No I have to add all methods below the struct definitions
/// Reads a single surface entry from the given material keys
void ReadMaterialSurface( Surface& poSurface, const aiMaterial* pSrcMat, aiTextureType pTexture, const char* pKey, size_t pType, size_t pIndex);
/// Writes an image entry for the given surface
void WriteImageEntry( const Surface& pSurface, const std::string& pNameAdd);
/// Writes the two parameters necessary for referencing a texture in an effect entry
void WriteTextureParamEntry( const Surface& pSurface, const std::string& pTypeName, const std::string& pMatName);
/// Writes a color-or-texture entry into an effect definition
void WriteTextureColorEntry( const Surface& pSurface, const std::string& pTypeName, const std::string& pImageName);
/// Writes a scalar property
void WriteFloatEntry( const Property& pProperty, const std::string& pTypeName);
};
}
#endif // !! AI_COLLADAEXPORTER_H_INC

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thirdparty/assimp/code/Collada/ColladaHelper.h vendored
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/** Helper structures for the Collada loader */
/*
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 AI_COLLADAHELPER_H_INC
#define AI_COLLADAHELPER_H_INC
#include <map>
#include <vector>
#include <stdint.h>
#include <assimp/light.h>
#include <assimp/mesh.h>
#include <assimp/material.h>
struct aiMaterial;
namespace Assimp {
namespace Collada {
/** Collada file versions which evolved during the years ... */
enum FormatVersion
{
FV_1_5_n,
FV_1_4_n,
FV_1_3_n
};
/** Transformation types that can be applied to a node */
enum TransformType
{
TF_LOOKAT,
TF_ROTATE,
TF_TRANSLATE,
TF_SCALE,
TF_SKEW,
TF_MATRIX
};
/** Different types of input data to a vertex or face */
enum InputType
{
IT_Invalid,
IT_Vertex, // special type for per-index data referring to the <vertices> element carrying the per-vertex data.
IT_Position,
IT_Normal,
IT_Texcoord,
IT_Color,
IT_Tangent,
IT_Bitangent
};
/** Supported controller types */
enum ControllerType
{
Skin,
Morph
};
/** Supported morph methods */
enum MorphMethod
{
Normalized,
Relative
};
/** Contains all data for one of the different transformation types */
struct Transform
{
std::string mID; ///< SID of the transform step, by which anim channels address their target node
TransformType mType;
ai_real f[16]; ///< Interpretation of data depends on the type of the transformation
};
/** A collada camera. */
struct Camera
{
Camera()
: mOrtho (false)
, mHorFov (10e10f)
, mVerFov (10e10f)
, mAspect (10e10f)
, mZNear (0.1f)
, mZFar (1000.f)
{}
// Name of camera
std::string mName;
// True if it is an orthografic camera
bool mOrtho;
//! Horizontal field of view in degrees
ai_real mHorFov;
//! Vertical field of view in degrees
ai_real mVerFov;
//! Screen aspect
ai_real mAspect;
//! Near& far z
ai_real mZNear, mZFar;
};
#define ASSIMP_COLLADA_LIGHT_ANGLE_NOT_SET 1e9f
/** A collada light source. */
struct Light
{
Light()
: mType (aiLightSource_UNDEFINED)
, mAttConstant (1.f)
, mAttLinear (0.f)
, mAttQuadratic (0.f)
, mFalloffAngle (180.f)
, mFalloffExponent (0.f)
, mPenumbraAngle (ASSIMP_COLLADA_LIGHT_ANGLE_NOT_SET)
, mOuterAngle (ASSIMP_COLLADA_LIGHT_ANGLE_NOT_SET)
, mIntensity (1.f)
{}
//! Type of the light source aiLightSourceType + ambient
unsigned int mType;
//! Color of the light
aiColor3D mColor;
//! Light attenuation
ai_real mAttConstant,mAttLinear,mAttQuadratic;
//! Spot light falloff
ai_real mFalloffAngle;
ai_real mFalloffExponent;
// -----------------------------------------------------
// FCOLLADA extension from here
//! ... related stuff from maja and max extensions
ai_real mPenumbraAngle;
ai_real mOuterAngle;
//! Common light intensity
ai_real mIntensity;
};
/** Short vertex index description */
struct InputSemanticMapEntry
{
InputSemanticMapEntry()
: mSet(0)
, mType(IT_Invalid)
{}
//! Index of set, optional
unsigned int mSet;
//! Type of referenced vertex input
InputType mType;
};
/** Table to map from effect to vertex input semantics */
struct SemanticMappingTable
{
//! Name of material
std::string mMatName;
//! List of semantic map commands, grouped by effect semantic name
std::map<std::string, InputSemanticMapEntry> mMap;
//! For std::find
bool operator == (const std::string& s) const {
return s == mMatName;
}
};
/** A reference to a mesh inside a node, including materials assigned to the various subgroups.
* The ID refers to either a mesh or a controller which specifies the mesh
*/
struct MeshInstance
{
///< ID of the mesh or controller to be instanced
std::string mMeshOrController;
///< Map of materials by the subgroup ID they're applied to
std::map<std::string, SemanticMappingTable> mMaterials;
};
/** A reference to a camera inside a node*/
struct CameraInstance
{
///< ID of the camera
std::string mCamera;
};
/** A reference to a light inside a node*/
struct LightInstance
{
///< ID of the camera
std::string mLight;
};
/** A reference to a node inside a node*/
struct NodeInstance
{
///< ID of the node
std::string mNode;
};
/** A node in a scene hierarchy */
struct Node
{
std::string mName;
std::string mID;
std::string mSID;
Node* mParent;
std::vector<Node*> mChildren;
/** Operations in order to calculate the resulting transformation to parent. */
std::vector<Transform> mTransforms;
/** Meshes at this node */
std::vector<MeshInstance> mMeshes;
/** Lights at this node */
std::vector<LightInstance> mLights;
/** Cameras at this node */
std::vector<CameraInstance> mCameras;
/** Node instances at this node */
std::vector<NodeInstance> mNodeInstances;
/** Root-nodes: Name of primary camera, if any */
std::string mPrimaryCamera;
//! Constructor. Begin with a zero parent
Node()
: mParent( nullptr ){
// empty
}
//! Destructor: delete all children subsequently
~Node() {
for( std::vector<Node*>::iterator it = mChildren.begin(); it != mChildren.end(); ++it)
delete *it;
}
};
/** Data source array: either floats or strings */
struct Data
{
bool mIsStringArray;
std::vector<ai_real> mValues;
std::vector<std::string> mStrings;
};
/** Accessor to a data array */
struct Accessor
{
size_t mCount; // in number of objects
size_t mSize; // size of an object, in elements (floats or strings, mostly 1)
size_t mOffset; // in number of values
size_t mStride; // Stride in number of values
std::vector<std::string> mParams; // names of the data streams in the accessors. Empty string tells to ignore.
size_t mSubOffset[4]; // Suboffset inside the object for the common 4 elements. For a vector, that's XYZ, for a color RGBA and so on.
// For example, SubOffset[0] denotes which of the values inside the object is the vector X component.
std::string mSource; // URL of the source array
mutable const Data* mData; // Pointer to the source array, if resolved. NULL else
Accessor()
{
mCount = 0; mSize = 0; mOffset = 0; mStride = 0; mData = NULL;
mSubOffset[0] = mSubOffset[1] = mSubOffset[2] = mSubOffset[3] = 0;
}
};
/** A single face in a mesh */
struct Face
{
std::vector<size_t> mIndices;
};
/** An input channel for mesh data, referring to a single accessor */
struct InputChannel
{
InputType mType; // Type of the data
size_t mIndex; // Optional index, if multiple sets of the same data type are given
size_t mOffset; // Index offset in the indices array of per-face indices. Don't ask, can't explain that any better.
std::string mAccessor; // ID of the accessor where to read the actual values from.
mutable const Accessor* mResolved; // Pointer to the accessor, if resolved. NULL else
InputChannel() { mType = IT_Invalid; mIndex = 0; mOffset = 0; mResolved = NULL; }
};
/** Subset of a mesh with a certain material */
struct SubMesh
{
std::string mMaterial; ///< subgroup identifier
size_t mNumFaces; ///< number of faces in this submesh
};
/** Contains data for a single mesh */
struct Mesh
{
Mesh()
{
for (unsigned int i = 0; i < AI_MAX_NUMBER_OF_TEXTURECOORDS;++i)
mNumUVComponents[i] = 2;
}
std::string mName;
// just to check if there's some sophisticated addressing involved...
// which we don't support, and therefore should warn about.
std::string mVertexID;
// Vertex data addressed by vertex indices
std::vector<InputChannel> mPerVertexData;
// actual mesh data, assembled on encounter of a <p> element. Verbose format, not indexed
std::vector<aiVector3D> mPositions;
std::vector<aiVector3D> mNormals;
std::vector<aiVector3D> mTangents;
std::vector<aiVector3D> mBitangents;
std::vector<aiVector3D> mTexCoords[AI_MAX_NUMBER_OF_TEXTURECOORDS];
std::vector<aiColor4D> mColors[AI_MAX_NUMBER_OF_COLOR_SETS];
unsigned int mNumUVComponents[AI_MAX_NUMBER_OF_TEXTURECOORDS];
// Faces. Stored are only the number of vertices for each face.
// 1 == point, 2 == line, 3 == triangle, 4+ == poly
std::vector<size_t> mFaceSize;
// Position indices for all faces in the sequence given in mFaceSize -
// necessary for bone weight assignment
std::vector<size_t> mFacePosIndices;
// Submeshes in this mesh, each with a given material
std::vector<SubMesh> mSubMeshes;
};
/** Which type of primitives the ReadPrimitives() function is going to read */
enum PrimitiveType
{
Prim_Invalid,
Prim_Lines,
Prim_LineStrip,
Prim_Triangles,
Prim_TriStrips,
Prim_TriFans,
Prim_Polylist,
Prim_Polygon
};
/** A skeleton controller to deform a mesh with the use of joints */
struct Controller
{
// controller type
ControllerType mType;
// Morphing method if type is Morph
MorphMethod mMethod;
// the URL of the mesh deformed by the controller.
std::string mMeshId;
// accessor URL of the joint names
std::string mJointNameSource;
///< The bind shape matrix, as array of floats. I'm not sure what this matrix actually describes, but it can't be ignored in all cases
ai_real mBindShapeMatrix[16];
// accessor URL of the joint inverse bind matrices
std::string mJointOffsetMatrixSource;
// input channel: joint names.
InputChannel mWeightInputJoints;
// input channel: joint weights
InputChannel mWeightInputWeights;
// Number of weights per vertex.
std::vector<size_t> mWeightCounts;
// JointIndex-WeightIndex pairs for all vertices
std::vector< std::pair<size_t, size_t> > mWeights;
std::string mMorphTarget;
std::string mMorphWeight;
};
/** A collada material. Pretty much the only member is a reference to an effect. */
struct Material
{
std::string mName;
std::string mEffect;
};
/** Type of the effect param */
enum ParamType
{
Param_Sampler,
Param_Surface
};
/** A param for an effect. Might be of several types, but they all just refer to each other, so I summarize them */
struct EffectParam
{
ParamType mType;
std::string mReference; // to which other thing the param is referring to.
};
/** Shading type supported by the standard effect spec of Collada */
enum ShadeType
{
Shade_Invalid,
Shade_Constant,
Shade_Lambert,
Shade_Phong,
Shade_Blinn
};
/** Represents a texture sampler in collada */
struct Sampler
{
Sampler()
: mWrapU (true)
, mWrapV (true)
, mMirrorU ()
, mMirrorV ()
, mOp (aiTextureOp_Multiply)
, mUVId (UINT_MAX)
, mWeighting (1.f)
, mMixWithPrevious (1.f)
{}
/** Name of image reference
*/
std::string mName;
/** Wrap U?
*/
bool mWrapU;
/** Wrap V?
*/
bool mWrapV;
/** Mirror U?
*/
bool mMirrorU;
/** Mirror V?
*/
bool mMirrorV;
/** Blend mode
*/
aiTextureOp mOp;
/** UV transformation
*/
aiUVTransform mTransform;
/** Name of source UV channel
*/
std::string mUVChannel;
/** Resolved UV channel index or UINT_MAX if not known
*/
unsigned int mUVId;
// OKINO/MAX3D extensions from here
// -------------------------------------------------------
/** Weighting factor
*/
ai_real mWeighting;
/** Mixing factor from OKINO
*/
ai_real mMixWithPrevious;
};
/** A collada effect. Can contain about anything according to the Collada spec,
but we limit our version to a reasonable subset. */
struct Effect
{
// Shading mode
ShadeType mShadeType;
// Colors
aiColor4D mEmissive, mAmbient, mDiffuse, mSpecular,
mTransparent, mReflective;
// Textures
Sampler mTexEmissive, mTexAmbient, mTexDiffuse, mTexSpecular,
mTexTransparent, mTexBump, mTexReflective;
// Scalar factory
ai_real mShininess, mRefractIndex, mReflectivity;
ai_real mTransparency;
bool mHasTransparency;
bool mRGBTransparency;
bool mInvertTransparency;
// local params referring to each other by their SID
typedef std::map<std::string, Collada::EffectParam> ParamLibrary;
ParamLibrary mParams;
// MAX3D extensions
// ---------------------------------------------------------
// Double-sided?
bool mDoubleSided, mWireframe, mFaceted;
Effect()
: mShadeType (Shade_Phong)
, mEmissive ( 0, 0, 0, 1)
, mAmbient ( 0.1f, 0.1f, 0.1f, 1)
, mDiffuse ( 0.6f, 0.6f, 0.6f, 1)
, mSpecular ( 0.4f, 0.4f, 0.4f, 1)
, mTransparent ( 0, 0, 0, 1)
, mShininess (10.0f)
, mRefractIndex (1.f)
, mReflectivity (0.f)
, mTransparency (1.f)
, mHasTransparency (false)
, mRGBTransparency(false)
, mInvertTransparency(false)
, mDoubleSided (false)
, mWireframe (false)
, mFaceted (false)
{
}
};
/** An image, meaning texture */
struct Image
{
std::string mFileName;
/** Embedded image data */
std::vector<uint8_t> mImageData;
/** File format hint ofembedded image data */
std::string mEmbeddedFormat;
};
/** An animation channel. */
struct AnimationChannel
{
/** URL of the data to animate. Could be about anything, but we support only the
* "NodeID/TransformID.SubElement" notation
*/
std::string mTarget;
/** Source URL of the time values. Collada calls them "input". Meh. */
std::string mSourceTimes;
/** Source URL of the value values. Collada calls them "output". */
std::string mSourceValues;
/** Source URL of the IN_TANGENT semantic values. */
std::string mInTanValues;
/** Source URL of the OUT_TANGENT semantic values. */
std::string mOutTanValues;
/** Source URL of the INTERPOLATION semantic values. */
std::string mInterpolationValues;
};
/** An animation. Container for 0-x animation channels or 0-x animations */
struct Animation
{
/** Anim name */
std::string mName;
/** the animation channels, if any */
std::vector<AnimationChannel> mChannels;
/** the sub-animations, if any */
std::vector<Animation*> mSubAnims;
/** Destructor */
~Animation()
{
for( std::vector<Animation*>::iterator it = mSubAnims.begin(); it != mSubAnims.end(); ++it)
delete *it;
}
/** Collect all channels in the animation hierarchy into a single channel list. */
void CollectChannelsRecursively(std::vector<AnimationChannel> &channels)
{
channels.insert(channels.end(), mChannels.begin(), mChannels.end());
for (std::vector<Animation*>::iterator it = mSubAnims.begin(); it != mSubAnims.end(); ++it)
{
Animation *pAnim = (*it);
pAnim->CollectChannelsRecursively(channels);
}
}
/** Combine all single-channel animations' channel into the same (parent) animation channel list. */
void CombineSingleChannelAnimations()
{
CombineSingleChannelAnimationsRecursively(this);
}
void CombineSingleChannelAnimationsRecursively(Animation *pParent)
{
for (std::vector<Animation*>::iterator it = pParent->mSubAnims.begin(); it != pParent->mSubAnims.end();)
{
Animation *anim = *it;
CombineSingleChannelAnimationsRecursively(anim);
if (anim->mChannels.size() == 1)
{
pParent->mChannels.push_back(anim->mChannels[0]);
it = pParent->mSubAnims.erase(it);
delete anim;
}
else
{
++it;
}
}
}
};
/** Description of a collada animation channel which has been determined to affect the current node */
struct ChannelEntry
{
const Collada::AnimationChannel* mChannel; ///> the source channel
std::string mTargetId;
std::string mTransformId; // the ID of the transformation step of the node which is influenced
size_t mTransformIndex; // Index into the node's transform chain to apply the channel to
size_t mSubElement; // starting index inside the transform data
// resolved data references
const Collada::Accessor* mTimeAccessor; ///> Collada accessor to the time values
const Collada::Data* mTimeData; ///> Source data array for the time values
const Collada::Accessor* mValueAccessor; ///> Collada accessor to the key value values
const Collada::Data* mValueData; ///> Source datat array for the key value values
ChannelEntry()
: mChannel()
, mTransformIndex()
, mSubElement()
, mTimeAccessor()
, mTimeData()
, mValueAccessor()
, mValueData()
{}
};
} // end of namespace Collada
} // end of namespace Assimp
#endif // AI_COLLADAHELPER_H_INC

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thirdparty/assimp/code/Collada/ColladaLoader.cpp vendored
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/** Defines the collada loader class */
/*
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 AI_COLLADALOADER_H_INC
#define AI_COLLADALOADER_H_INC
#include <assimp/BaseImporter.h>
#include "ColladaParser.h"
struct aiNode;
struct aiCamera;
struct aiLight;
struct aiTexture;
struct aiAnimation;
namespace Assimp
{
struct ColladaMeshIndex
{
std::string mMeshID;
size_t mSubMesh;
std::string mMaterial;
ColladaMeshIndex( const std::string& pMeshID, size_t pSubMesh, const std::string& pMaterial)
: mMeshID( pMeshID), mSubMesh( pSubMesh), mMaterial( pMaterial)
{ }
bool operator < (const ColladaMeshIndex& p) const
{
if( mMeshID == p.mMeshID)
{
if( mSubMesh == p.mSubMesh)
return mMaterial < p.mMaterial;
else
return mSubMesh < p.mSubMesh;
} else
{
return mMeshID < p.mMeshID;
}
}
};
/** Loader class to read Collada scenes. Collada is over-engineered to death, with every new iteration bringing
* more useless stuff, so I limited the data to what I think is useful for games.
*/
class ColladaLoader : public BaseImporter
{
public:
ColladaLoader();
~ColladaLoader();
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 override;
protected:
/** Return importer meta information.
* See #BaseImporter::GetInfo for the details
*/
const aiImporterDesc* GetInfo () const override;
void SetupProperties(const Importer* pImp) override;
/** Imports the given file into the given scene structure.
* See BaseImporter::InternReadFile() for details
*/
void InternReadFile( const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler) override;
/** Recursively constructs a scene node for the given parser node and returns it. */
aiNode* BuildHierarchy( const ColladaParser& pParser, const Collada::Node* pNode);
/** Resolve node instances */
void ResolveNodeInstances( const ColladaParser& pParser, const Collada::Node* pNode,
std::vector<const Collada::Node*>& resolved);
/** Builds meshes for the given node and references them */
void BuildMeshesForNode( const ColladaParser& pParser, const Collada::Node* pNode,
aiNode* pTarget);
aiMesh *findMesh(const std::string& meshid);
/** Creates a mesh for the given ColladaMesh face subset and returns the newly created mesh */
aiMesh* CreateMesh( const ColladaParser& pParser, const Collada::Mesh* pSrcMesh, const Collada::SubMesh& pSubMesh,
const Collada::Controller* pSrcController, size_t pStartVertex, size_t pStartFace);
/** Builds cameras for the given node and references them */
void BuildCamerasForNode( const ColladaParser& pParser, const Collada::Node* pNode,
aiNode* pTarget);
/** Builds lights for the given node and references them */
void BuildLightsForNode( const ColladaParser& pParser, const Collada::Node* pNode,
aiNode* pTarget);
/** Stores all meshes in the given scene */
void StoreSceneMeshes( aiScene* pScene);
/** Stores all materials in the given scene */
void StoreSceneMaterials( aiScene* pScene);
/** Stores all lights in the given scene */
void StoreSceneLights( aiScene* pScene);
/** Stores all cameras in the given scene */
void StoreSceneCameras( aiScene* pScene);
/** Stores all textures in the given scene */
void StoreSceneTextures( aiScene* pScene);
/** Stores all animations
* @param pScene target scene to store the anims
*/
void StoreAnimations( aiScene* pScene, const ColladaParser& pParser);
/** Stores all animations for the given source anim and its nested child animations
* @param pScene target scene to store the anims
* @param pSrcAnim the source animation to process
* @param pPrefix Prefix to the name in case of nested animations
*/
void StoreAnimations( aiScene* pScene, const ColladaParser& pParser, const Collada::Animation* pSrcAnim, const std::string& pPrefix);
/** Constructs the animation for the given source anim */
void CreateAnimation( aiScene* pScene, const ColladaParser& pParser, const Collada::Animation* pSrcAnim, const std::string& pName);
/** Constructs materials from the collada material definitions */
void BuildMaterials( ColladaParser& pParser, aiScene* pScene);
/** Fill materials from the collada material definitions */
void FillMaterials( const ColladaParser& pParser, aiScene* pScene);
/** Resolve UV channel mappings*/
void ApplyVertexToEffectSemanticMapping(Collada::Sampler& sampler,
const Collada::SemanticMappingTable& table);
/** Add a texture and all of its sampling properties to a material*/
void AddTexture ( aiMaterial& mat, const ColladaParser& pParser,
const Collada::Effect& effect,
const Collada::Sampler& sampler,
aiTextureType type, unsigned int idx = 0);
/** Resolves the texture name for the given effect texture entry */
aiString FindFilenameForEffectTexture( const ColladaParser& pParser,
const Collada::Effect& pEffect, const std::string& pName);
/** Converts a path read from a collada file to the usual representation */
void ConvertPath( aiString& ss);
/** Reads a float value from an accessor and its data array.
* @param pAccessor The accessor to use for reading
* @param pData The data array to read from
* @param pIndex The index of the element to retrieve
* @param pOffset Offset into the element, for multipart elements such as vectors or matrices
* @return the specified value
*/
ai_real ReadFloat( const Collada::Accessor& pAccessor, const Collada::Data& pData, size_t pIndex, size_t pOffset) const;
/** Reads a string value from an accessor and its data array.
* @param pAccessor The accessor to use for reading
* @param pData The data array to read from
* @param pIndex The index of the element to retrieve
* @return the specified value
*/
const std::string& ReadString( const Collada::Accessor& pAccessor, const Collada::Data& pData, size_t pIndex) const;
/** Recursively collects all nodes into the given array */
void CollectNodes( const aiNode* pNode, std::vector<const aiNode*>& poNodes) const;
/** Finds a node in the collada scene by the given name */
const Collada::Node* FindNode( const Collada::Node* pNode, const std::string& pName) const;
/** Finds a node in the collada scene by the given SID */
const Collada::Node* FindNodeBySID( const Collada::Node* pNode, const std::string& pSID) const;
/** Finds a proper name for a node derived from the collada-node's properties */
std::string FindNameForNode( const Collada::Node* pNode);
protected:
/** Filename, for a verbose error message */
std::string mFileName;
/** Which mesh-material compound was stored under which mesh ID */
std::map<ColladaMeshIndex, size_t> mMeshIndexByID;
/** Which material was stored under which index in the scene */
std::map<std::string, size_t> mMaterialIndexByName;
/** Accumulated meshes for the target scene */
std::vector<aiMesh*> mMeshes;
/** Accumulated morph target meshes */
std::vector<aiMesh*> mTargetMeshes;
/** Temporary material list */
std::vector<std::pair<Collada::Effect*, aiMaterial*> > newMats;
/** Temporary camera list */
std::vector<aiCamera*> mCameras;
/** Temporary light list */
std::vector<aiLight*> mLights;
/** Temporary texture list */
std::vector<aiTexture*> mTextures;
/** Accumulated animations for the target scene */
std::vector<aiAnimation*> mAnims;
bool noSkeletonMesh;
bool ignoreUpDirection;
bool useColladaName;
/** Used by FindNameForNode() to generate unique node names */
unsigned int mNodeNameCounter;
};
} // end of namespace Assimp
#endif // AI_COLLADALOADER_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 ColladaParser.h
* @brief Defines the parser helper class for the collada loader
*/
#ifndef AI_COLLADAPARSER_H_INC
#define AI_COLLADAPARSER_H_INC
#include <assimp/irrXMLWrapper.h>
#include "ColladaHelper.h"
#include <assimp/ai_assert.h>
#include <assimp/TinyFormatter.h>
namespace Assimp
{
class ZipArchiveIOSystem;
// ------------------------------------------------------------------------------------------
/** Parser helper class for the Collada loader.
*
* Does all the XML reading and builds internal data structures from it,
* but leaves the resolving of all the references to the loader.
*/
class ColladaParser
{
friend class ColladaLoader;
protected:
/** Map for generic metadata as aiString */
typedef std::map<std::string, aiString> StringMetaData;
/** Constructor from XML file */
ColladaParser( IOSystem* pIOHandler, const std::string& pFile);
/** Destructor */
~ColladaParser();
/** Attempts to read the ZAE manifest and returns the DAE to open */
static std::string ReadZaeManifest(ZipArchiveIOSystem &zip_archive);
/** Reads the contents of the file */
void ReadContents();
/** Reads the structure of the file */
void ReadStructure();
/** Reads asset information such as coordinate system information and legal blah */
void ReadAssetInfo();
/** Reads contributor information such as author and legal blah */
void ReadContributorInfo();
/** Reads generic metadata into provided map */
void ReadMetaDataItem(StringMetaData &metadata);
/** Convert underscore_seperated to CamelCase "authoring_tool" becomes "AuthoringTool" */
static void ToCamelCase(std::string &text);
/** Reads the animation library */
void ReadAnimationLibrary();
/** Reads the animation clip library */
void ReadAnimationClipLibrary();
/** Unwrap controllers dependency hierarchy */
void PostProcessControllers();
/** Re-build animations from animation clip library, if present, otherwise combine single-channel animations */
void PostProcessRootAnimations();
/** Reads an animation into the given parent structure */
void ReadAnimation( Collada::Animation* pParent);
/** Reads an animation sampler into the given anim channel */
void ReadAnimationSampler( Collada::AnimationChannel& pChannel);
/** Reads the skeleton controller library */
void ReadControllerLibrary();
/** Reads a controller into the given mesh structure */
void ReadController( Collada::Controller& pController);
/** Reads the joint definitions for the given controller */
void ReadControllerJoints( Collada::Controller& pController);
/** Reads the joint weights for the given controller */
void ReadControllerWeights( Collada::Controller& pController);
/** Reads the image library contents */
void ReadImageLibrary();
/** Reads an image entry into the given image */
void ReadImage( Collada::Image& pImage);
/** Reads the material library */
void ReadMaterialLibrary();
/** Reads a material entry into the given material */
void ReadMaterial( Collada::Material& pMaterial);
/** Reads the camera library */
void ReadCameraLibrary();
/** Reads a camera entry into the given camera */
void ReadCamera( Collada::Camera& pCamera);
/** Reads the light library */
void ReadLightLibrary();
/** Reads a light entry into the given light */
void ReadLight( Collada::Light& pLight);
/** Reads the effect library */
void ReadEffectLibrary();
/** Reads an effect entry into the given effect*/
void ReadEffect( Collada::Effect& pEffect);
/** Reads an COMMON effect profile */
void ReadEffectProfileCommon( Collada::Effect& pEffect);
/** Read sampler properties */
void ReadSamplerProperties( Collada::Sampler& pSampler);
/** Reads an effect entry containing a color or a texture defining that color */
void ReadEffectColor( aiColor4D& pColor, Collada::Sampler& pSampler);
/** Reads an effect entry containing a float */
void ReadEffectFloat( ai_real& pFloat);
/** Reads an effect parameter specification of any kind */
void ReadEffectParam( Collada::EffectParam& pParam);
/** Reads the geometry library contents */
void ReadGeometryLibrary();
/** Reads a geometry from the geometry library. */
void ReadGeometry( Collada::Mesh* pMesh);
/** Reads a mesh from the geometry library */
void ReadMesh( Collada::Mesh* pMesh);
/** Reads a source element - a combination of raw data and an accessor defining
* things that should not be redefinable. Yes, that's another rant.
*/
void ReadSource();
/** Reads a data array holding a number of elements, and stores it in the global library.
* Currently supported are array of floats and arrays of strings.
*/
void ReadDataArray();
/** Reads an accessor and stores it in the global library under the given ID -
* accessors use the ID of the parent <source> element
*/
void ReadAccessor( const std::string& pID);
/** Reads input declarations of per-vertex mesh data into the given mesh */
void ReadVertexData( Collada::Mesh* pMesh);
/** Reads input declarations of per-index mesh data into the given mesh */
void ReadIndexData( Collada::Mesh* pMesh);
/** Reads a single input channel element and stores it in the given array, if valid */
void ReadInputChannel( std::vector<Collada::InputChannel>& poChannels);
/** Reads a <p> primitive index list and assembles the mesh data into the given mesh */
size_t ReadPrimitives( Collada::Mesh* pMesh, std::vector<Collada::InputChannel>& pPerIndexChannels,
size_t pNumPrimitives, const std::vector<size_t>& pVCount, Collada::PrimitiveType pPrimType);
/** Copies the data for a single primitive into the mesh, based on the InputChannels */
void CopyVertex(size_t currentVertex, size_t numOffsets, size_t numPoints, size_t perVertexOffset,
Collada::Mesh* pMesh, std::vector<Collada::InputChannel>& pPerIndexChannels,
size_t currentPrimitive, const std::vector<size_t>& indices);
/** Reads one triangle of a tristrip into the mesh */
void ReadPrimTriStrips(size_t numOffsets, size_t perVertexOffset, Collada::Mesh* pMesh,
std::vector<Collada::InputChannel>& pPerIndexChannels, size_t currentPrimitive, const std::vector<size_t>& indices);
/** Extracts a single object from an input channel and stores it in the appropriate mesh data array */
void ExtractDataObjectFromChannel( const Collada::InputChannel& pInput, size_t pLocalIndex, Collada::Mesh* pMesh);
/** Reads the library of node hierarchies and scene parts */
void ReadSceneLibrary();
/** Reads a scene node's contents including children and stores it in the given node */
void ReadSceneNode( Collada::Node* pNode);
/** Reads a node transformation entry of the given type and adds it to the given node's transformation list. */
void ReadNodeTransformation( Collada::Node* pNode, Collada::TransformType pType);
/** Reads a mesh reference in a node and adds it to the node's mesh list */
void ReadNodeGeometry( Collada::Node* pNode);
/** Reads the collada scene */
void ReadScene();
// Processes bind_vertex_input and bind elements
void ReadMaterialVertexInputBinding( Collada::SemanticMappingTable& tbl);
/** Reads embedded textures from a ZAE archive*/
void ReadEmbeddedTextures(ZipArchiveIOSystem &zip_archive);
protected:
/** Aborts the file reading with an exception */
AI_WONT_RETURN void ThrowException( const std::string& pError) const AI_WONT_RETURN_SUFFIX;
void ReportWarning(const char* msg,...);
/** Skips all data until the end node of the current element */
void SkipElement();
/** Skips all data until the end node of the given element */
void SkipElement( const char* pElement);
/** Compares the current xml element name to the given string and returns true if equal */
bool IsElement( const char* pName) const;
/** Tests for the opening tag of the given element, throws an exception if not found */
void TestOpening( const char* pName);
/** Tests for the closing tag of the given element, throws an exception if not found */
void TestClosing( const char* pName);
/** Checks the present element for the presence of the attribute, returns its index
or throws an exception if not found */
int GetAttribute( const char* pAttr) const;
/** Returns the index of the named attribute or -1 if not found. Does not throw,
therefore useful for optional attributes */
int TestAttribute( const char* pAttr) const;
/** Reads the text contents of an element, throws an exception if not given.
Skips leading whitespace. */
const char* GetTextContent();
/** Reads the text contents of an element, returns NULL if not given.
Skips leading whitespace. */
const char* TestTextContent();
/** Reads a single bool from current text content */
bool ReadBoolFromTextContent();
/** Reads a single float from current text content */
ai_real ReadFloatFromTextContent();
/** Calculates the resulting transformation from all the given transform steps */
aiMatrix4x4 CalculateResultTransform( const std::vector<Collada::Transform>& pTransforms) const;
/** Determines the input data type for the given semantic string */
Collada::InputType GetTypeForSemantic( const std::string& pSemantic);
/** Finds the item in the given library by its reference, throws if not found */
template <typename Type> const Type& ResolveLibraryReference( const std::map<std::string, Type>& pLibrary, const std::string& pURL) const;
protected:
/** Filename, for a verbose error message */
std::string mFileName;
/** XML reader, member for everyday use */
irr::io::IrrXMLReader* mReader;
/** All data arrays found in the file by ID. Might be referred to by actually
everyone. Collada, you are a steaming pile of indirection. */
typedef std::map<std::string, Collada::Data> DataLibrary;
DataLibrary mDataLibrary;
/** Same for accessors which define how the data in a data array is accessed. */
typedef std::map<std::string, Collada::Accessor> AccessorLibrary;
AccessorLibrary mAccessorLibrary;
/** Mesh library: mesh by ID */
typedef std::map<std::string, Collada::Mesh*> MeshLibrary;
MeshLibrary mMeshLibrary;
/** node library: root node of the hierarchy part by ID */
typedef std::map<std::string, Collada::Node*> NodeLibrary;
NodeLibrary mNodeLibrary;
/** Image library: stores texture properties by ID */
typedef std::map<std::string, Collada::Image> ImageLibrary;
ImageLibrary mImageLibrary;
/** Effect library: surface attributes by ID */
typedef std::map<std::string, Collada::Effect> EffectLibrary;
EffectLibrary mEffectLibrary;
/** Material library: surface material by ID */
typedef std::map<std::string, Collada::Material> MaterialLibrary;
MaterialLibrary mMaterialLibrary;
/** Light library: surface light by ID */
typedef std::map<std::string, Collada::Light> LightLibrary;
LightLibrary mLightLibrary;
/** Camera library: surface material by ID */
typedef std::map<std::string, Collada::Camera> CameraLibrary;
CameraLibrary mCameraLibrary;
/** Controller library: joint controllers by ID */
typedef std::map<std::string, Collada::Controller> ControllerLibrary;
ControllerLibrary mControllerLibrary;
/** Animation library: animation references by ID */
typedef std::map<std::string, Collada::Animation*> AnimationLibrary;
AnimationLibrary mAnimationLibrary;
/** Animation clip library: clip animation references by ID */
typedef std::vector<std::pair<std::string, std::vector<std::string> > > AnimationClipLibrary;
AnimationClipLibrary mAnimationClipLibrary;
/** Pointer to the root node. Don't delete, it just points to one of
the nodes in the node library. */
Collada::Node* mRootNode;
/** Root animation container */
Collada::Animation mAnims;
/** Size unit: how large compared to a meter */
ai_real mUnitSize;
/** Which is the up vector */
enum { UP_X, UP_Y, UP_Z } mUpDirection;
/** Asset metadata (global for scene) */
StringMetaData mAssetMetaData;
/** Collada file format version */
Collada::FormatVersion mFormat;
};
// ------------------------------------------------------------------------------------------------
// Check for element match
inline bool ColladaParser::IsElement( const char* pName) const
{
ai_assert( mReader->getNodeType() == irr::io::EXN_ELEMENT);
return ::strcmp( mReader->getNodeName(), pName) == 0;
}
// ------------------------------------------------------------------------------------------------
// Finds the item in the given library by its reference, throws if not found
template <typename Type>
const Type& ColladaParser::ResolveLibraryReference( const std::map<std::string, Type>& pLibrary, const std::string& pURL) const
{
typename std::map<std::string, Type>::const_iterator it = pLibrary.find( pURL);
if( it == pLibrary.end())
ThrowException( Formatter::format() << "Unable to resolve library reference \"" << pURL << "\"." );
return it->second;
}
} // end of namespace Assimp
#endif // AI_COLLADAPARSER_H_INC