ofxAssimpModelLoader getMesh doesn't apply matrix transformation

[dimitre]

when I'm using ofxAssimpModelLoader object vs. drawing the meshes with getMesh they don't have the same position / scale.
Reading the code a bit I suppose there is a global transformation matrix and another for each mesh that it applies when drawing ofxAssimpModelLoader object.
Should getMesh output the mesh with the matrixes applied?

[ofTheo]

Hey @dimitre - yes that is correct and I believe intended behavior.
It returns the mesh data without the transformations.

I was also thinking though that it might be good to have getTransformedMesh or something like that.

There is quite a bit of work to do with ofxAssimpModelLoader now that all the PBR and latest assimp fixes are in but we should look into some more helper features ( saving too! ).

[dimitre]

Great. yeah it would be nice to have getTransformedMesh!
I'll be trying to implement setSpeed for animations. from what I've seen it should be easy to do.

[ofTheo]

Awesome! Yeah, any improvements to the addon would be great. 👍
Its fairly janky at the moment and probably needs a big rewrite, but any robust bug fixes or features would be awesome.

[NickHardeman]

The new ofxAssimp add-on has functions for the original mesh

openFrameworks/addons/ofxAssimp/src/ofxAssimpModel.h

Lines 167 to 174 in dd09e97

	/// \brief Get an OF mesh based on name of assimp mesh.
	/// \param aname name of the desired assimp mesh.
	/// \return ofMesh that is not transformed.
	ofMesh& getOFMeshForMesh(const std::string& aname);
	/// \brief Get an OF mesh based on the vector index of the assimp mesh.
	/// \param ameshIndex vector index of the assimp mesh.
	/// \return ofMesh that is not transformed.
	ofMesh& getOFMeshForMesh(unsigned int ameshIndex);

or getting the OF mesh transformed by the bones and animations

openFrameworks/addons/ofxAssimp/src/ofxAssimpModel.h

Lines 175 to 182 in dd09e97

	/// \brief Get a transformed OF mesh based on name of assimp mesh.
	/// \param aname name of the desired assimp mesh.
	/// \return Transformed ofMesh.
	ofMesh getTransformedOFMeshForMesh(const std::string& aname);
	/// \brief Get a transformed OF mesh based on the vector index of the assimp mesh.
	/// \param ameshIndex vector index of the assimp mesh.
	/// \return Transformed ofMesh.
	ofMesh getTransformedOFMeshForMesh(unsigned int ameshIndex);

[NickHardeman]

closed by #7776