Assimp Material Loading in Java

[DanielUnleashed]

So, the name explains it very well:
I've been struggling with Assimp because I cannot get the properties of a material, and well, I'm searching for help or maybe a link where I can find information.
So far, this is what I got.

int numMaterials = scene.mNumMaterials();
		int[] materialRemap = new int[numMaterials];
		for(int i = 0; i < numMaterials; i++){
			AIMaterial material = new AIMaterial(scene.mMaterials().getByteBuffer(1288));
			for(int j = 0; j < material.mNumProperties(); j++){
				AIMaterialProperty prop = new AIMaterialProperty(material.mProperties().getByteBuffer(1288));
                                // What now?
			}
			material.close();
		}

Any help will be well received, thank you!

[spasi]

That is not the correct way to iterate the scene materials. Also, AIMaterialProperty structs are not usually accessed by the user directly, the more convenient aiGetMaterial<property> functions are used instead. Example code:

PointerBuffer materials = scene.mMaterials(); // array of pointers to AIMaterial structs
for ( int i = 0; i < materials.remaining(); i++ ) {
	AIMaterial material = AIMaterial.create(materials.get(i)); // wrap raw pointer in AIMaterial instance

	// Method 1: use aiGetMaterial<property> functions, e.g.
	int texCount = aiGetMaterialTextureCount(material, aiTextureType_DIFFUSE);

	// Method 2: Parse material properties manually
	PointerBuffer properties = material.mProperties(); // array of pointers to AIMaterialProperty structs
	for ( int j = 0; j < properties.remaining(); j++ ) {
		AIMaterialProperty prop = AIMaterialProperty.create(properties.get(j));
		// parse property
	}
}

Finally, material.close() or material.free() should not be called. The memory backing the materials is allocated by Assimp and is part of the AIScene object, it will be deallocated when you call aiReleaseImport(scene).

[DanielUnleashed]

Thank you sir, it worked as a charm!
But one final question, how do we parse the information of a AIMaterialProperties; I mean, how would I do, if I want to know all the name properties of the material?
And also, any sort of wiki or javadoc where I can found more info about Assimp?

[spasi]

The Assimp documentation is here. I don't think there's any information on how to parse material properties and I'm not sure why one would want to do it manually instead of using the aiGetMaterial* functions.

[DanielUnleashed]

Well, still huge thanks for the help

[DanielUnleashed]

One final question, how could I get a float from Assimp. I mean, getting for example de Index of Refracion, what method should I use?
aiGetMaterialFloatArray() maybe?