Open Asset Import Library(assimp) 를 이용해서 blender를 읽어오고 openGL로 그릴수 있는 것으로 보인다.
Features
- Reads more than 30 3D file formats, including Collada, X, 3DS, Blend, Obj
- Converts them to a hierarchical in-memory data structure
- Provides 'post-processing steps' to improve the input data, i.e. generate normals and tangents or fix import issues.
- Provides APIs for both C and C++
- Imports skeleton animations and skinning weights
- Supports complex multi-layer materials
- www.open3mod.com/ is an Open-Source viewer that is based off assimp to view models (Windows only)
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[링크 : https://sourceforge.net/projects/assimp/]
Assimp::Importer importer;
const aiScene *scene = importer.ReadFile(filename,aiProcessPreset_TargetRealtime_Fast);
aiMesh *mesh = scene->mMeshes[0]; //assuming you only want the first mesh
float *vertexArray;
float *normalArray;
float *uvArray;
int numVerts;
next extract the data
numVerts = mesh->mNumFaces*3;
vertexArray = new float[mesh->mNumFaces*3*3];
normalArray = new float[mesh->mNumFaces*3*3];
uvArray = new float[mesh->mNumFaces*3*2];
for(unsigned int i=0;i<mesh->mNumFaces;i++)
{
const aiFace& face = mesh->mFaces[i];
for(int j=0;j<3;j++)
{
aiVector3D uv = mesh->mTextureCoords[0][face.mIndices[j]];
memcpy(uvArray,&uv,sizeof(float)*2);
uvArray+=2;
aiVector3D normal = mesh->mNormals[face.mIndices[j]];
memcpy(normalArray,&normal,sizeof(float)*3);
normalArray+=3;
aiVector3D pos = mesh->mVertices[face.mIndices[j]];
memcpy(vertexArray,&pos,sizeof(float)*3);
vertexArray+=3;
}
}
uvArray-=mesh->mNumFaces*3*2;
normalArray-=mesh->mNumFaces*3*3;
vertexArray-=mesh->mNumFaces*3*3; |
[링크 : https://nickthecoder.wordpress.com/2013/01/20/mesh-loading-with-assimp/]
[링크 : https://stackoverflow.com/questions/35111681/make-a-model-in-blender-and-load-in-opengl]
