/*
* This function gathers material data from the objects in the scene graph
* rooted by the given AV object. This will create associations between
* the material and texturing properties and the objects that use them,
* which then can be browsed or searched using the collection's other functions.
* \param[in] scene_root The root node of the scene to gather material
* information from.
*/
public void GatherMaterials(NiAVObject scene_root)
{
if (scene_root == null)
{
throw new Exception("MatTexCollection::GatherMaterials was called on a null scene root.");
}
//Check and see if this object is a geometry object
if (scene_root.IsDerivedType(NiGeometry.TYPE))
{
//Check and see if this geometry's unique combination of material and texture properties has already been found
if (GetMaterialIndex(scene_root) == NO_MATERIAL)
{
//Material was not already found. Look for material/texture related properties.
var mat = scene_root.GetPropertyByType(NiMaterialProperty.TYPE);
var texing = scene_root.GetPropertyByType(NiTexturingProperty.TYPE);
var tex = scene_root.GetPropertyByType(NiTextureProperty.TYPE);
var multi = scene_root.GetPropertyByType(NiMultiTextureProperty.TYPE);
var spec = scene_root.GetPropertyByType(NiSpecularProperty.TYPE);
var alpha = scene_root.GetPropertyByType(NiAlphaProperty.TYPE);
var stencil = scene_root.GetPropertyByType(NiStencilProperty.TYPE);
//Make sure at least one isn't null
if (mat != null || texing != null || tex != null || multi != null || stencil != null)
{
//One isn't null, so create a new Material
var matC = mat as NiMaterialProperty;
var texingC = texing as NiTexturingProperty;
var texC = tex as NiTextureProperty;
var multiC = multi as NiMultiTextureProperty;
var specC = spec as NiSpecularProperty;
var alphaC = alpha as NiAlphaProperty;
var stencilC = stencil as NiStencilProperty;
//First, check if the material's textures have been found yet
if (texingC != null)
{
for (var i = 0; i < 8; ++i)
{
if (texingC.HasTexture(i))
{
var td = texingC.GetTexture(i);
if (td.source != null)
{
var index = GetTextureIndex(td.source);
if (index == NO_TEXTURE)
{
//Texture has not yet been found. Create a new one.
textures.Add(new TextureWrapper(td.source));
}
}
}
}
}
else if (texC != null)
{
var image = texC.GetImage();
if (image != null)
{
var index = GetTextureIndex(image);
if (index == NO_TEXTURE)
{
//Texture has not yet been found. Create a new one.
textures.Add(new TextureWrapper(image));
}
}
}
//TODO: Implement this for NiMultiTextureProperty as well
materials.push_back(new MaterialWrapper(matC, texingC, texC, multiC, specC, alphaC, stencilC, this));
}
}
//Done with this branch, so return.
return;
}
//If this object is a NiNode, then call this function on its children
var node = scene_root as NiNode;
if (node != null)
{
var children = node.GetChildren();
}
for (var i = 0; i < children.Length; ++i)
{
GatherMaterials(children[i]);
}
}
