private void LoadFromAssimp(Module.Import.Assimp.Context context, string filename, aiScene scene)
{
if (!string.IsNullOrEmpty(filename))
{
byte[] tex;
if (filename[0] == '*')
{
// Embeded texture
string index_str = filename.Remove(0, 1);
uint index;
if (uint.TryParse(index_str, out index))
{
using (aiTextureArray array = scene.Textures)
{
if (index < array.Size())
{
using (aiTexture texture = array.Get(index))
{
DecodeTexture(filename, texture.data);
}
}
else
{
Debug.LogError("Invalid embeded texture index \"" + index + "\" (out of bound).");
}
}
}
else
{
Debug.LogError("Invalid embeded texture name \"" + filename + "\" (not an index).");
}
}
else if (context.importer != null && (tex = context.importer.GetTexture(filename)) != null)
{
DecodeTexture(filename, tex);
}
else
{
LoadFromFile(context.path, filename);
}
}
}
internal static global::System.Runtime.InteropServices.HandleRef getCPtr(aiTextureArray obj)
{
return((obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.swigCPtr);
}
private void ToAssimp(Module.Export.Assimp.Context context, string texture_name, aiTextureType texture_type, aiMaterial material)
{
if (!string.IsNullOrEmpty(texture_name))
{
string final_texture_name = null;
if (texture_name.Length >= 1 && texture_name[0] == '*')
{
// Special textures
if (texture_name.Length >= 3 && texture_name[1] == '*')
{
switch (texture_name[2])
{
case 'N':
// New normal texture generated from height map
texture_type = aiTextureType.aiTextureType_HEIGHT;
final_texture_name = texture_name.Substring(3);
break;
case 'A':
// Secondary texture encoded in alpha channel
string[] textures = texture_name.Substring(3).Split('|');
if (textures.Length == 2)
{
ToAssimp(context, textures[0], texture_type, material);
switch (texture_type)
{
case aiTextureType.aiTextureType_DIFFUSE:
texture_type = aiTextureType.aiTextureType_OPACITY;
break;
case aiTextureType.aiTextureType_SPECULAR:
texture_type = aiTextureType.aiTextureType_SHININESS;
break;
default:
break;
}
ToAssimp(context, textures[1], texture_type, material);
}
else
{
throw new FormatException("The texture + alpha should contain identifiers to only two original textures");
}
break;
case 'E':
// Empty texture
break;
default:
break;
}
}
else // Embeded texture
{
if (unityTexture != null)
{
using (aiTextureArray textures = context.scene.Textures)
{
uint index = textures.Size();
final_texture_name = "*" + index;
using (aiTexture texture = new aiTexture())
{
texture.data = unityTexture.EncodeToPNG();
texture.achFormatHint = "png";
textures.Set(index, texture.Unmanaged());
}
}
}
}
}
else
{
final_texture_name = texture_name;
}
if (final_texture_name != null)
{
using (aiString assimp_texture_name = new aiString(final_texture_name))
{
lock (material)
{
material.SetTexturePath(texture_type, 0, assimp_texture_name.Unmanaged());
}
}
context.progress.Update(ASSIMP_PROGRESS_FACTOR);
}
}
}
