/// <summary>
/// Gets or creates the material resource for the given VertexStructure object.
/// </summary>
internal static MaterialResource GetOrCreateMaterialResource(this ResourceDictionary resourceDict, VertexStructureSurface targetSurface)
{
NamedOrGenericKey materialKey = targetSurface.Material;
NamedOrGenericKey textureKey = targetSurface.TextureKey;
// Get the material if it is already created
if ((!materialKey.IsEmpty) && (resourceDict.ContainsResource(materialKey)))
{
return(resourceDict.GetResource <MaterialResource>(materialKey));
}
// Generate a dynamic material key
if (materialKey.IsEmpty)
{
materialKey = new NamedOrGenericKey(targetSurface.MaterialProperties.GetDynamicResourceKey());
}
// Get the material if it is already created
if (resourceDict.ContainsResource(materialKey))
{
return(resourceDict.GetResource <MaterialResource>(materialKey));
}
if (textureKey.IsEmpty)
{
// Create a default material without any texture
SimpleColoredMaterialResource result = resourceDict.AddResource <SimpleColoredMaterialResource>(materialKey, new SimpleColoredMaterialResource());
result.MaterialDiffuseColor = targetSurface.MaterialProperties.DiffuseColor;
return(result);
}
else
{
// Create texture resource if needed
try
{
if ((!resourceDict.ContainsResource(textureKey)) &&
(!string.IsNullOrEmpty(textureKey.NameKey)))
{
// Try to find and create the texture resource by its name
if (targetSurface.ResourceLink != null)
{
var textureResourceLink = targetSurface.ResourceLink.GetForAnotherFile(textureKey.NameKey);
resourceDict.AddResource <StandardTextureResource>(
textureKey,
new StandardTextureResource(
targetSurface.ResourceLink.GetForAnotherFile(textureKey.NameKey)));
}
else if (targetSurface.ResourceSourceAssembly != null)
{
var textureResourceLink = new AssemblyResourceLink(
targetSurface.ResourceSourceAssembly,
targetSurface.ResourceSourceAssembly.GetName().Name + ".Resources.Textures",
textureKey.NameKey);
if (textureResourceLink.IsValid())
{
resourceDict.AddResource <StandardTextureResource>(
textureKey,
new StandardTextureResource(textureResourceLink));
}
else
{
// Unable to resolve texture
textureKey = NamedOrGenericKey.Empty;
}
}
else
{
// Unable to resolve texture
textureKey = NamedOrGenericKey.Empty;
}
}
}
catch { }
// Create a default textured material
if (!textureKey.IsEmpty)
{
SimpleColoredMaterialResource result = resourceDict.AddResource <SimpleColoredMaterialResource>(
materialKey,
new SimpleColoredMaterialResource(textureKey));
result.MaterialDiffuseColor = targetSurface.MaterialProperties.DiffuseColor;
return(result);
}
else
{
SimpleColoredMaterialResource result = resourceDict.AddResource <SimpleColoredMaterialResource>(
materialKey,
new SimpleColoredMaterialResource());
result.MaterialDiffuseColor = targetSurface.MaterialProperties.DiffuseColor;
return(result);
}
}
}