private void ExportMaterial(Material materialNode, BabylonScene babylonScene)
{
var name = materialNode._Mtl.Name;
var id = materialNode.GetGuid().ToString();
RaiseMessage(name, true);
if (materialNode.NumSubMaterials > 0)
{
var babylonMultimaterial = new BabylonMultiMaterial();
babylonMultimaterial.name = name;
babylonMultimaterial.id = id;
var guids = new List<string>();
for (var index = 0; index < materialNode.NumSubMaterials; index++)
{
var subMat = materialNode.GetSubMaterial(index) as Material;
if (subMat != null)
{
guids.Add(subMat.GetGuid().ToString());
if (!referencedMaterials.Contains(subMat))
{
referencedMaterials.Add(subMat);
ExportMaterial(subMat, babylonScene);
}
}
else
{
guids.Add(Guid.Empty.ToString());
}
}
babylonMultimaterial.materials = guids.ToArray();
babylonScene.MultiMaterialsList.Add(babylonMultimaterial);
return;
}
var babylonMaterial = new BabylonMaterial();
babylonMaterial.name = name;
babylonMaterial.id = id;
babylonMaterial.ambient = materialNode.GetAmbient(0).ToArray();
babylonMaterial.diffuse = materialNode.GetDiffuse(0).ToArray();
babylonMaterial.specular = materialNode.GetSpecular(0).Scale(materialNode.GetShinyStrength(0));
babylonMaterial.specularPower = materialNode.GetShininess(0) * 256;
babylonMaterial.emissive = materialNode.SelfIlluminationColorOn ? materialNode.GetSelfIllumColor(0).ToArray() : materialNode.GetDiffuse(0).Scale(materialNode.GetSelfIllumination(0));
babylonMaterial.alpha = 1.0f - materialNode.GetTransparency(0);
var stdMat = materialNode._Mtl.GetParamBlock(0).Owner as IStdMat2;
if (stdMat != null)
{
// Textures
babylonMaterial.ambientTexture = ExportTexture(stdMat, 0, babylonScene); // Ambient
babylonMaterial.diffuseTexture = ExportTexture(stdMat, 1, babylonScene); // Diffuse
babylonMaterial.specularTexture = ExportTexture(stdMat, 2, babylonScene); // Specular
babylonMaterial.emissiveTexture = ExportTexture(stdMat, 5, babylonScene); // Emissive
babylonMaterial.opacityTexture = ExportTexture(stdMat, 6, babylonScene); // Opacity
babylonMaterial.bumpTexture = ExportTexture(stdMat, 8, babylonScene); // Bump
babylonMaterial.reflectionTexture = ExportTexture(stdMat, 9, babylonScene); // Reflection
// Constraints
if (babylonMaterial.diffuseTexture != null)
{
babylonMaterial.emissive = new [] { 1.0f, 1.0f, 1.0f };
}
if (babylonMaterial.emissiveTexture != null)
{
babylonMaterial.emissive = new float[]{0, 0, 0};
}
if (babylonMaterial.opacityTexture != null && babylonMaterial.diffuseTexture != null &&
babylonMaterial.diffuseTexture.name == babylonMaterial.opacityTexture.name &&
babylonMaterial.diffuseTexture.hasAlpha && !babylonMaterial.opacityTexture.getAlphaFromRGB)
{
// This is a alpha testing purpose
babylonMaterial.opacityTexture = null;
babylonMaterial.diffuseTexture.hasAlpha = true;
RaiseWarning("Opacity texture was removed because alpha from diffuse texture can be use instead", true);
RaiseWarning("If you do not want this behavior, just set Alpha Source = None on your diffuse texture", true);
}
}
babylonScene.MaterialsList.Add(babylonMaterial);
}
public void SetSubMaterial(int n, Material m) { _Mtl.SetSubMtl(n, m._Mtl); }