I startded to make an assimp only opengl skeletal animation demo. For that I used this: http://sourceforge.net/p/assimp/discussion/817654/thread/5462cbf5 And something is not correct in bone matrices. 
and my standerd bob_with_lamp model(.md5) looks like this. its moving its parts but not in correct way.This is the code:
for( size_t a = 0; a < anim->mNumChannels; ++a) { const aiNodeAnim* channel = anim->mChannels[a]; aiVector3D curPosition(0,0,0); aiQuaternion curRotation(1,0,0,0); aiNode* targetNode = scene->mRootNode->FindNode(channel->mNodeName); while((int)time >channel->mNumPositionKeys) time-=channel->mNumPositionKeys; curPosition = channel->mPositionKeys[(int)time].mValue; curRotation = channel->mRotationKeys[(int)time].mValue; aiMatrix4x4 trafo = aiMatrix4x4(curRotation.GetMatrix()); trafo.a4 = curPosition.x; trafo.b4 = curPosition.y; trafo.c4 = curPosition.z; targetNode->mTransformation = trafo; } for (unsigned int n = 0; n < scene->mNumMeshes; ++n) { const aiMesh* mesh = scene->mMeshes[n]; std::vector<aiMatrix4x4> boneMatrices( mesh->mNumBones); for( size_t a = 0; a < mesh->mNumBones; a++) { const aiBone* bone = mesh->mBones[a]; aiNode* node = scene->mRootNode->FindNode( bone->mName); boneMatrices[a] = bone->mOffsetMatrix; const aiNode* tempNode = node; while( tempNode) { aiMatrix4x4 m = tempNode->mTransformation; boneMatrices[a] *= tempNode->mTransformation; tempNode = tempNode->mParent; } } and my render:
std::vector<aiVector3D> resultPos( mesh->mNumVertices); std::vector<aiVector3D> resultNorm( mesh->mNumVertices); for( size_t a = 0; a < mesh->mNumBones; ++a) { const aiBone* bone = mesh->mBones[a]; const aiMatrix4x4& posTrafo = boneMatrices[a]; aiMatrix3x3 normTrafo = aiMatrix3x3( posTrafo); for( size_t b = 0; b < bone->mNumWeights; ++b) { const aiVertexWeight& weight = bone->mWeights[b]; size_t vertexId = weight.mVertexId; const aiVector3D& srcPos = mesh->mVertices[vertexId]; const aiVector3D& srcNorm = mesh->mNormals[vertexId]; resultPos[vertexId] += weight.mWeight * (posTrafo *srcPos); resultNorm[vertexId] += weight.mWeight * (normTrafo * srcNorm); } } //And rendering the vertices from the pos vector what should I change to made this to get correct positions?
