assimp/code/AssetLib/MD5/MD5Loader.cpp

730 lines
30 KiB
C++

/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
---------------------------------------------------------------------------
Copyright (c) 2006-2022, 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
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* Redistributions of source code must retain the above
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following disclaimer.
* Redistributions in binary form must reproduce the above
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following disclaimer in the documentation and/or other
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* 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
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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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,
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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---------------------------------------------------------------------------
*/
/** @file MD5Loader.cpp
* @brief Implementation of the MD5 importer class
*/
#ifndef ASSIMP_BUILD_NO_MD5_IMPORTER
// internal headers
#include "MD5Loader.h"
#include <assimp/MathFunctions.h>
#include <assimp/RemoveComments.h>
#include <assimp/SkeletonMeshBuilder.h>
#include <assimp/StringComparison.h>
#include <assimp/fast_atof.h>
#include <assimp/importerdesc.h>
#include <assimp/scene.h>
#include <assimp/DefaultLogger.hpp>
#include <assimp/IOSystem.hpp>
#include <assimp/Importer.hpp>
#include <memory>
using namespace Assimp;
// Minimum weight value. Weights inside [-n ... n] are ignored
#define AI_MD5_WEIGHT_EPSILON Math::getEpsilon<float>()
static constexpr aiImporterDesc desc = {
"Doom 3 / MD5 Mesh Importer",
"",
"",
"",
aiImporterFlags_SupportBinaryFlavour,
0,
0,
0,
0,
"md5mesh md5camera md5anim"
};
// ------------------------------------------------------------------------------------------------
// Constructor to be privately used by Importer
MD5Importer::MD5Importer() :
mIOHandler(nullptr),
mBuffer(),
mFileSize(),
mLineNumber(),
mScene(),
mHadMD5Mesh(),
mHadMD5Anim(),
mHadMD5Camera(),
mCconfigNoAutoLoad(false) {
// empty
}
// ------------------------------------------------------------------------------------------------
// Returns whether the class can handle the format of the given file.
bool MD5Importer::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /*checkSig*/) const {
static const char *tokens[] = { "MD5Version" };
return SearchFileHeaderForToken(pIOHandler, pFile, tokens, AI_COUNT_OF(tokens));
}
// ------------------------------------------------------------------------------------------------
// Get list of all supported extensions
const aiImporterDesc *MD5Importer::GetInfo() const {
return &desc;
}
// ------------------------------------------------------------------------------------------------
// Setup import properties
void MD5Importer::SetupProperties(const Importer *pImp) {
// AI_CONFIG_IMPORT_MD5_NO_ANIM_AUTOLOAD
mCconfigNoAutoLoad = (0 != pImp->GetPropertyInteger(AI_CONFIG_IMPORT_MD5_NO_ANIM_AUTOLOAD, 0));
}
// ------------------------------------------------------------------------------------------------
// Imports the given file into the given scene structure.
void MD5Importer::InternReadFile(const std::string &pFile, aiScene *_pScene, IOSystem *pIOHandler) {
mIOHandler = pIOHandler;
mScene = _pScene;
mHadMD5Mesh = mHadMD5Anim = mHadMD5Camera = false;
// remove the file extension
const std::string::size_type pos = pFile.find_last_of('.');
mFile = (std::string::npos == pos ? pFile : pFile.substr(0, pos + 1));
const std::string extension = GetExtension(pFile);
try {
if (extension == "md5camera") {
LoadMD5CameraFile();
} else if (mCconfigNoAutoLoad || extension == "md5anim") {
// determine file extension and process just *one* file
if (extension.length() == 0) {
throw DeadlyImportError("Failure, need file extension to determine MD5 part type");
}
if (extension == "md5anim") {
LoadMD5AnimFile();
} else if (extension == "md5mesh") {
LoadMD5MeshFile();
}
} else {
LoadMD5MeshFile();
LoadMD5AnimFile();
}
} catch (...) { // std::exception, Assimp::DeadlyImportError
UnloadFileFromMemory();
throw;
}
// make sure we have at least one file
if (!mHadMD5Mesh && !mHadMD5Anim && !mHadMD5Camera) {
throw DeadlyImportError("Failed to read valid contents out of this MD5* file");
}
// Now rotate the whole scene 90 degrees around the x axis to match our internal coordinate system
mScene->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);
// the output scene wouldn't pass the validation without this flag
if (!mHadMD5Mesh) {
mScene->mFlags |= AI_SCENE_FLAGS_INCOMPLETE;
}
// clean the instance -- the BaseImporter instance may be reused later.
UnloadFileFromMemory();
}
// ------------------------------------------------------------------------------------------------
// Load a file into a memory buffer
void MD5Importer::LoadFileIntoMemory(IOStream *file) {
// unload the previous buffer, if any
UnloadFileFromMemory();
ai_assert(nullptr != file);
mFileSize = (unsigned int)file->FileSize();
ai_assert(mFileSize);
// allocate storage and copy the contents of the file to a memory buffer
mBuffer = new char[mFileSize + 1];
file->Read((void *)mBuffer, 1, mFileSize);
mLineNumber = 1;
// append a terminal 0
mBuffer[mFileSize] = '\0';
// now remove all line comments from the file
CommentRemover::RemoveLineComments("//", mBuffer, ' ');
}
// ------------------------------------------------------------------------------------------------
// Unload the current memory buffer
void MD5Importer::UnloadFileFromMemory() {
// delete the file buffer
delete[] mBuffer;
mBuffer = nullptr;
mFileSize = 0;
}
// ------------------------------------------------------------------------------------------------
// Build unique vertices
void MD5Importer::MakeDataUnique(MD5::MeshDesc &meshSrc) {
std::vector<bool> abHad(meshSrc.mVertices.size(), false);
// allocate enough storage to keep the output structures
const unsigned int iNewNum = static_cast<unsigned int>(meshSrc.mFaces.size() * 3);
unsigned int iNewIndex = static_cast<unsigned int>(meshSrc.mVertices.size());
meshSrc.mVertices.resize(iNewNum);
// try to guess how much storage we'll need for new weights
const float fWeightsPerVert = meshSrc.mWeights.size() / (float)iNewIndex;
const unsigned int guess = (unsigned int)(fWeightsPerVert * iNewNum);
meshSrc.mWeights.reserve(guess + (guess >> 3)); // + 12.5% as buffer
for (FaceList::const_iterator iter = meshSrc.mFaces.begin(), iterEnd = meshSrc.mFaces.end(); iter != iterEnd; ++iter) {
const aiFace &face = *iter;
for (unsigned int i = 0; i < 3; ++i) {
if (face.mIndices[0] >= meshSrc.mVertices.size()) {
throw DeadlyImportError("MD5MESH: Invalid vertex index");
}
if (abHad[face.mIndices[i]]) {
// generate a new vertex
meshSrc.mVertices[iNewIndex] = meshSrc.mVertices[face.mIndices[i]];
face.mIndices[i] = iNewIndex++;
} else
abHad[face.mIndices[i]] = true;
}
// swap face order
std::swap(face.mIndices[0], face.mIndices[2]);
}
}
// ------------------------------------------------------------------------------------------------
// Recursive node graph construction from a MD5MESH
void MD5Importer::AttachChilds_Mesh(int iParentID, aiNode *piParent, BoneList &bones) {
ai_assert(nullptr != piParent);
ai_assert(!piParent->mNumChildren);
// First find out how many children we'll have
for (int i = 0; i < (int)bones.size(); ++i) {
if (iParentID != i && bones[i].mParentIndex == iParentID) {
++piParent->mNumChildren;
}
}
if (piParent->mNumChildren) {
piParent->mChildren = new aiNode *[piParent->mNumChildren];
for (int i = 0; i < (int)bones.size(); ++i) {
// (avoid infinite recursion)
if (iParentID != i && bones[i].mParentIndex == iParentID) {
aiNode *pc;
// setup a new node
*piParent->mChildren++ = pc = new aiNode();
pc->mName = aiString(bones[i].mName);
pc->mParent = piParent;
// get the transformation matrix from rotation and translational components
aiQuaternion quat;
MD5::ConvertQuaternion(bones[i].mRotationQuat, quat);
bones[i].mTransform = aiMatrix4x4(quat.GetMatrix());
bones[i].mTransform.a4 = bones[i].mPositionXYZ.x;
bones[i].mTransform.b4 = bones[i].mPositionXYZ.y;
bones[i].mTransform.c4 = bones[i].mPositionXYZ.z;
// store it for later use
pc->mTransformation = bones[i].mInvTransform = bones[i].mTransform;
bones[i].mInvTransform.Inverse();
// the transformations for each bone are absolute, so we need to multiply them
// with the inverse of the absolute matrix of the parent joint
if (-1 != iParentID) {
pc->mTransformation = bones[iParentID].mInvTransform * pc->mTransformation;
}
// add children to this node, too
AttachChilds_Mesh(i, pc, bones);
}
}
// undo offset computations
piParent->mChildren -= piParent->mNumChildren;
}
}
// ------------------------------------------------------------------------------------------------
// Recursive node graph construction from a MD5ANIM
void MD5Importer::AttachChilds_Anim(int iParentID, aiNode *piParent, AnimBoneList &bones, const aiNodeAnim **node_anims) {
ai_assert(nullptr != piParent);
ai_assert(!piParent->mNumChildren);
// First find out how many children we'll have
for (int i = 0; i < (int)bones.size(); ++i) {
if (iParentID != i && bones[i].mParentIndex == iParentID) {
++piParent->mNumChildren;
}
}
if (piParent->mNumChildren) {
piParent->mChildren = new aiNode *[piParent->mNumChildren];
for (int i = 0; i < (int)bones.size(); ++i) {
// (avoid infinite recursion)
if (iParentID != i && bones[i].mParentIndex == iParentID) {
aiNode *pc;
// setup a new node
*piParent->mChildren++ = pc = new aiNode();
pc->mName = aiString(bones[i].mName);
pc->mParent = piParent;
// get the corresponding animation channel and its first frame
const aiNodeAnim **cur = node_anims;
while ((**cur).mNodeName != pc->mName)
++cur;
aiMatrix4x4::Translation((**cur).mPositionKeys[0].mValue, pc->mTransformation);
pc->mTransformation = pc->mTransformation * aiMatrix4x4((**cur).mRotationKeys[0].mValue.GetMatrix());
// add children to this node, too
AttachChilds_Anim(i, pc, bones, node_anims);
}
}
// undo offset computations
piParent->mChildren -= piParent->mNumChildren;
}
}
// ------------------------------------------------------------------------------------------------
// Load a MD5MESH file
void MD5Importer::LoadMD5MeshFile() {
std::string filename = mFile + "md5mesh";
std::unique_ptr<IOStream> file(mIOHandler->Open(filename, "rb"));
// Check whether we can read from the file
if (file == nullptr || !file->FileSize()) {
ASSIMP_LOG_WARN("Failed to access MD5MESH file: ", filename);
return;
}
mHadMD5Mesh = true;
LoadFileIntoMemory(file.get());
// now construct a parser and parse the file
MD5::MD5Parser parser(mBuffer, mFileSize);
// load the mesh information from it
MD5::MD5MeshParser meshParser(parser.mSections);
// create the bone hierarchy - first the root node and dummy nodes for all meshes
mScene->mRootNode = new aiNode("<MD5_Root>");
mScene->mRootNode->mNumChildren = 2;
mScene->mRootNode->mChildren = new aiNode *[2];
// build the hierarchy from the MD5MESH file
aiNode *pcNode = mScene->mRootNode->mChildren[1] = new aiNode();
pcNode->mName.Set("<MD5_Hierarchy>");
pcNode->mParent = mScene->mRootNode;
AttachChilds_Mesh(-1, pcNode, meshParser.mJoints);
pcNode = mScene->mRootNode->mChildren[0] = new aiNode();
pcNode->mName.Set("<MD5_Mesh>");
pcNode->mParent = mScene->mRootNode;
#if 0
if (pScene->mRootNode->mChildren[1]->mNumChildren) /* start at the right hierarchy level */
SkeletonMeshBuilder skeleton_maker(pScene,pScene->mRootNode->mChildren[1]->mChildren[0]);
#else
// FIX: MD5 files exported from Blender can have empty meshes
for (std::vector<MD5::MeshDesc>::const_iterator it = meshParser.mMeshes.begin(), end = meshParser.mMeshes.end(); it != end; ++it) {
if (!(*it).mFaces.empty() && !(*it).mVertices.empty()) {
++mScene->mNumMaterials;
}
}
// generate all meshes
mScene->mNumMeshes = mScene->mNumMaterials;
mScene->mMeshes = new aiMesh *[mScene->mNumMeshes];
mScene->mMaterials = new aiMaterial *[mScene->mNumMeshes];
// storage for node mesh indices
pcNode->mNumMeshes = mScene->mNumMeshes;
pcNode->mMeshes = new unsigned int[pcNode->mNumMeshes];
for (unsigned int m = 0; m < pcNode->mNumMeshes; ++m) {
pcNode->mMeshes[m] = m;
}
unsigned int n = 0;
for (std::vector<MD5::MeshDesc>::iterator it = meshParser.mMeshes.begin(), end = meshParser.mMeshes.end(); it != end; ++it) {
MD5::MeshDesc &meshSrc = *it;
if (meshSrc.mFaces.empty() || meshSrc.mVertices.empty()) {
continue;
}
aiMesh *mesh = mScene->mMeshes[n] = new aiMesh();
mesh->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
// generate unique vertices in our internal verbose format
MakeDataUnique(meshSrc);
std::string name(meshSrc.mShader.C_Str());
name += ".msh";
mesh->mName = name;
mesh->mNumVertices = (unsigned int)meshSrc.mVertices.size();
mesh->mVertices = new aiVector3D[mesh->mNumVertices];
mesh->mTextureCoords[0] = new aiVector3D[mesh->mNumVertices];
mesh->mNumUVComponents[0] = 2;
// copy texture coordinates
aiVector3D *pv = mesh->mTextureCoords[0];
for (MD5::VertexList::const_iterator iter = meshSrc.mVertices.begin(); iter != meshSrc.mVertices.end(); ++iter, ++pv) {
pv->x = (*iter).mUV.x;
pv->y = 1.0f - (*iter).mUV.y; // D3D to OpenGL
pv->z = 0.0f;
}
// sort all bone weights - per bone
unsigned int *piCount = new unsigned int[meshParser.mJoints.size()];
::memset(piCount, 0, sizeof(unsigned int) * meshParser.mJoints.size());
for (MD5::VertexList::const_iterator iter = meshSrc.mVertices.begin(); iter != meshSrc.mVertices.end(); ++iter, ++pv) {
for (unsigned int jub = (*iter).mFirstWeight, w = jub; w < jub + (*iter).mNumWeights; ++w) {
MD5::WeightDesc &weightDesc = meshSrc.mWeights[w];
/* FIX for some invalid exporters */
if (!(weightDesc.mWeight < AI_MD5_WEIGHT_EPSILON && weightDesc.mWeight >= -AI_MD5_WEIGHT_EPSILON)) {
++piCount[weightDesc.mBone];
}
}
}
// check how many we will need
for (unsigned int p = 0; p < meshParser.mJoints.size(); ++p) {
if (piCount[p]) mesh->mNumBones++;
}
// just for safety
if (mesh->mNumBones) {
mesh->mBones = new aiBone *[mesh->mNumBones];
for (unsigned int q = 0, h = 0; q < meshParser.mJoints.size(); ++q) {
if (!piCount[q]) continue;
aiBone *p = mesh->mBones[h] = new aiBone();
p->mNumWeights = piCount[q];
p->mWeights = new aiVertexWeight[p->mNumWeights];
p->mName = aiString(meshParser.mJoints[q].mName);
p->mOffsetMatrix = meshParser.mJoints[q].mInvTransform;
// store the index for later use
MD5::BoneDesc &boneSrc = meshParser.mJoints[q];
boneSrc.mMap = h++;
// compute w-component of quaternion
MD5::ConvertQuaternion(boneSrc.mRotationQuat, boneSrc.mRotationQuatConverted);
}
pv = mesh->mVertices;
for (MD5::VertexList::const_iterator iter = meshSrc.mVertices.begin(); iter != meshSrc.mVertices.end(); ++iter, ++pv) {
// compute the final vertex position from all single weights
*pv = aiVector3D();
// there are models which have weights which don't sum to 1 ...
ai_real fSum = 0.0;
for (unsigned int jub = (*iter).mFirstWeight, w = jub; w < jub + (*iter).mNumWeights; ++w) {
fSum += meshSrc.mWeights[w].mWeight;
}
if (!fSum) {
ASSIMP_LOG_ERROR("MD5MESH: The sum of all vertex bone weights is 0");
continue;
}
// process bone weights
for (unsigned int jub = (*iter).mFirstWeight, w = jub; w < jub + (*iter).mNumWeights; ++w) {
if (w >= meshSrc.mWeights.size()) {
throw DeadlyImportError("MD5MESH: Invalid weight index");
}
MD5::WeightDesc &weightDesc = meshSrc.mWeights[w];
if (weightDesc.mWeight < AI_MD5_WEIGHT_EPSILON && weightDesc.mWeight >= -AI_MD5_WEIGHT_EPSILON) {
continue;
}
const ai_real fNewWeight = weightDesc.mWeight / fSum;
// transform the local position into worldspace
MD5::BoneDesc &boneSrc = meshParser.mJoints[weightDesc.mBone];
const aiVector3D v = boneSrc.mRotationQuatConverted.Rotate(weightDesc.vOffsetPosition);
// use the original weight to compute the vertex position
// (some MD5s seem to depend on the invalid weight values ...)
*pv += ((boneSrc.mPositionXYZ + v) * (ai_real)weightDesc.mWeight);
aiBone *bone = mesh->mBones[boneSrc.mMap];
*bone->mWeights++ = aiVertexWeight((unsigned int)(pv - mesh->mVertices), fNewWeight);
}
}
// undo our nice offset tricks ...
for (unsigned int p = 0; p < mesh->mNumBones; ++p) {
mesh->mBones[p]->mWeights -= mesh->mBones[p]->mNumWeights;
}
}
delete[] piCount;
// now setup all faces - we can directly copy the list
// (however, take care that the aiFace destructor doesn't delete the mIndices array)
mesh->mNumFaces = (unsigned int)meshSrc.mFaces.size();
mesh->mFaces = new aiFace[mesh->mNumFaces];
for (unsigned int c = 0; c < mesh->mNumFaces; ++c) {
mesh->mFaces[c].mNumIndices = 3;
mesh->mFaces[c].mIndices = meshSrc.mFaces[c].mIndices;
meshSrc.mFaces[c].mIndices = nullptr;
}
// generate a material for the mesh
aiMaterial *mat = new aiMaterial();
mScene->mMaterials[n] = mat;
// insert the typical doom3 textures:
// nnn_local.tga - normal map
// nnn_h.tga - height map
// nnn_s.tga - specular map
// nnn_d.tga - diffuse map
if (meshSrc.mShader.length && !strchr(meshSrc.mShader.data, '.')) {
aiString temp(meshSrc.mShader);
temp.Append("_local.tga");
mat->AddProperty(&temp, AI_MATKEY_TEXTURE_NORMALS(0));
temp = aiString(meshSrc.mShader);
temp.Append("_s.tga");
mat->AddProperty(&temp, AI_MATKEY_TEXTURE_SPECULAR(0));
temp = aiString(meshSrc.mShader);
temp.Append("_d.tga");
mat->AddProperty(&temp, AI_MATKEY_TEXTURE_DIFFUSE(0));
temp = aiString(meshSrc.mShader);
temp.Append("_h.tga");
mat->AddProperty(&temp, AI_MATKEY_TEXTURE_HEIGHT(0));
// set this also as material name
mat->AddProperty(&meshSrc.mShader, AI_MATKEY_NAME);
} else {
mat->AddProperty(&meshSrc.mShader, AI_MATKEY_TEXTURE_DIFFUSE(0));
}
mesh->mMaterialIndex = n++;
}
#endif
}
// ------------------------------------------------------------------------------------------------
// Load an MD5ANIM file
void MD5Importer::LoadMD5AnimFile() {
std::string pFile = mFile + "md5anim";
std::unique_ptr<IOStream> file(mIOHandler->Open(pFile, "rb"));
// Check whether we can read from the file
if (!file || !file->FileSize()) {
ASSIMP_LOG_WARN("Failed to read MD5ANIM file: ", pFile);
return;
}
LoadFileIntoMemory(file.get());
// parse the basic file structure
MD5::MD5Parser parser(mBuffer, mFileSize);
// load the animation information from the parse tree
MD5::MD5AnimParser animParser(parser.mSections);
// generate and fill the output animation
if (animParser.mAnimatedBones.empty() || animParser.mFrames.empty() ||
animParser.mBaseFrames.size() != animParser.mAnimatedBones.size()) {
ASSIMP_LOG_ERROR("MD5ANIM: No frames or animated bones loaded");
} else {
mHadMD5Anim = true;
mScene->mAnimations = new aiAnimation *[mScene->mNumAnimations = 1];
aiAnimation *anim = mScene->mAnimations[0] = new aiAnimation();
anim->mNumChannels = (unsigned int)animParser.mAnimatedBones.size();
anim->mChannels = new aiNodeAnim *[anim->mNumChannels];
for (unsigned int i = 0; i < anim->mNumChannels; ++i) {
aiNodeAnim *node = anim->mChannels[i] = new aiNodeAnim();
node->mNodeName = aiString(animParser.mAnimatedBones[i].mName);
// allocate storage for the keyframes
node->mPositionKeys = new aiVectorKey[animParser.mFrames.size()];
node->mRotationKeys = new aiQuatKey[animParser.mFrames.size()];
}
// 1 tick == 1 frame
anim->mTicksPerSecond = animParser.fFrameRate;
for (FrameList::const_iterator iter = animParser.mFrames.begin(), iterEnd = animParser.mFrames.end(); iter != iterEnd; ++iter) {
double dTime = (double)(*iter).iIndex;
aiNodeAnim **pcAnimNode = anim->mChannels;
if (!(*iter).mValues.empty() || iter == animParser.mFrames.begin()) /* be sure we have at least one frame */
{
// now process all values in there ... read all joints
MD5::BaseFrameDesc *pcBaseFrame = &animParser.mBaseFrames[0];
for (AnimBoneList::const_iterator iter2 = animParser.mAnimatedBones.begin(); iter2 != animParser.mAnimatedBones.end(); ++iter2,
++pcAnimNode, ++pcBaseFrame) {
if ((*iter2).iFirstKeyIndex >= (*iter).mValues.size()) {
// Allow for empty frames
if ((*iter2).iFlags != 0) {
throw DeadlyImportError("MD5: Keyframe index is out of range");
}
continue;
}
const float *fpCur = &(*iter).mValues[(*iter2).iFirstKeyIndex];
aiNodeAnim *pcCurAnimBone = *pcAnimNode;
aiVectorKey *vKey = &pcCurAnimBone->mPositionKeys[pcCurAnimBone->mNumPositionKeys++];
aiQuatKey *qKey = &pcCurAnimBone->mRotationKeys[pcCurAnimBone->mNumRotationKeys++];
aiVector3D vTemp;
// translational component
for (unsigned int i = 0; i < 3; ++i) {
if ((*iter2).iFlags & (1u << i)) {
vKey->mValue[i] = *fpCur++;
} else
vKey->mValue[i] = pcBaseFrame->vPositionXYZ[i];
}
// orientation component
for (unsigned int i = 0; i < 3; ++i) {
if ((*iter2).iFlags & (8u << i)) {
vTemp[i] = *fpCur++;
} else
vTemp[i] = pcBaseFrame->vRotationQuat[i];
}
MD5::ConvertQuaternion(vTemp, qKey->mValue);
qKey->mTime = vKey->mTime = dTime;
}
}
// compute the duration of the animation
anim->mDuration = std::max(dTime, anim->mDuration);
}
// If we didn't build the hierarchy yet (== we didn't load a MD5MESH),
// construct it now from the data given in the MD5ANIM.
if (!mScene->mRootNode) {
mScene->mRootNode = new aiNode();
mScene->mRootNode->mName.Set("<MD5_Hierarchy>");
AttachChilds_Anim(-1, mScene->mRootNode, animParser.mAnimatedBones, (const aiNodeAnim **)anim->mChannels);
// Call SkeletonMeshBuilder to construct a mesh to represent the shape
if (mScene->mRootNode->mNumChildren) {
SkeletonMeshBuilder skeleton_maker(mScene, mScene->mRootNode->mChildren[0]);
}
}
}
}
// ------------------------------------------------------------------------------------------------
// Load an MD5CAMERA file
void MD5Importer::LoadMD5CameraFile() {
std::string pFile = mFile + "md5camera";
std::unique_ptr<IOStream> file(mIOHandler->Open(pFile, "rb"));
// Check whether we can read from the file
if (!file || !file->FileSize()) {
throw DeadlyImportError("Failed to read MD5CAMERA file: ", pFile);
}
mHadMD5Camera = true;
LoadFileIntoMemory(file.get());
// parse the basic file structure
MD5::MD5Parser parser(mBuffer, mFileSize);
// load the camera animation data from the parse tree
MD5::MD5CameraParser cameraParser(parser.mSections);
if (cameraParser.frames.empty()) {
throw DeadlyImportError("MD5CAMERA: No frames parsed");
}
std::vector<unsigned int> &cuts = cameraParser.cuts;
std::vector<MD5::CameraAnimFrameDesc> &frames = cameraParser.frames;
// Construct output graph - a simple root with a dummy child.
// The root node performs the coordinate system conversion
aiNode *root = mScene->mRootNode = new aiNode("<MD5CameraRoot>");
root->mChildren = new aiNode *[root->mNumChildren = 1];
root->mChildren[0] = new aiNode("<MD5Camera>");
root->mChildren[0]->mParent = root;
// ... but with one camera assigned to it
mScene->mCameras = new aiCamera *[mScene->mNumCameras = 1];
aiCamera *cam = mScene->mCameras[0] = new aiCamera();
cam->mName = "<MD5Camera>";
// FIXME: Fov is currently set to the first frame's value
cam->mHorizontalFOV = AI_DEG_TO_RAD(frames.front().fFOV);
// every cut is written to a separate aiAnimation
if (!cuts.size()) {
cuts.push_back(0);
cuts.push_back(static_cast<unsigned int>(frames.size() - 1));
} else {
cuts.insert(cuts.begin(), 0);
if (cuts.back() < frames.size() - 1)
cuts.push_back(static_cast<unsigned int>(frames.size() - 1));
}
mScene->mNumAnimations = static_cast<unsigned int>(cuts.size() - 1);
aiAnimation **tmp = mScene->mAnimations = new aiAnimation *[mScene->mNumAnimations];
for (std::vector<unsigned int>::const_iterator it = cuts.begin(); it != cuts.end() - 1; ++it) {
aiAnimation *anim = *tmp++ = new aiAnimation();
anim->mName.length = ::ai_snprintf(anim->mName.data, MAXLEN, "anim%u_from_%u_to_%u", (unsigned int)(it - cuts.begin()), (*it), *(it + 1));
anim->mTicksPerSecond = cameraParser.fFrameRate;
anim->mChannels = new aiNodeAnim *[anim->mNumChannels = 1];
aiNodeAnim *nd = anim->mChannels[0] = new aiNodeAnim();
nd->mNodeName.Set("<MD5Camera>");
nd->mNumPositionKeys = nd->mNumRotationKeys = *(it + 1) - (*it);
nd->mPositionKeys = new aiVectorKey[nd->mNumPositionKeys];
nd->mRotationKeys = new aiQuatKey[nd->mNumRotationKeys];
for (unsigned int i = 0; i < nd->mNumPositionKeys; ++i) {
nd->mPositionKeys[i].mValue = frames[*it + i].vPositionXYZ;
MD5::ConvertQuaternion(frames[*it + i].vRotationQuat, nd->mRotationKeys[i].mValue);
nd->mRotationKeys[i].mTime = nd->mPositionKeys[i].mTime = *it + i;
}
}
}
#endif // !! ASSIMP_BUILD_NO_MD5_IMPORTER