open3mod.MaterialMapper.IsAlphaMaterial C# (CSharp) Метод

        public bool IsAlphaMaterial(Material material)
        {
            if (material.HasOpacity && IsTransparent(material.Opacity))
            {
                return true;
            }

            // Also treat material as (potentially) semi-transparent if the alpha
            // components of any of the diffuse, specular, ambient and emissive
            // colors are non-1. It is not very well-defined how assimp handles
            // these values so better count them into transparency as well.
            //
            // Ignore color values with alpha=0, however. These are most likely
            // not intended to be fully transparent.
            if (material.HasColorDiffuse && IsTransparent(material.ColorDiffuse.A))
            {
                return true;
            }

            if (material.HasColorSpecular && IsTransparent(material.ColorSpecular.A))
            {
                return true;
            }

            if (material.HasColorAmbient && IsTransparent(material.ColorAmbient.A))
            {
                return true;
            }

            if (material.HasColorEmissive && IsTransparent(material.ColorEmissive.A))
            {
                return true;
            }

            if (material.GetMaterialTextureCount(TextureType.Diffuse) > 0)
            {
                TextureSlot tex;
                material.GetMaterialTexture(TextureType.Diffuse, 0, out tex);
                var gtex = _scene.TextureSet.GetOriginalOrReplacement(tex.FilePath);

                if(gtex.HasAlpha == Texture.AlphaState.HasAlpha)
                {
                    return true;
                }
            }

            return false;
        }