Hello,
I wish to write a exporter for UStaticMesh to OBJ + MTL. OBJ works fine (FCollisionData gives me per-face material). MTL requires me to iterate a set of UMaterialInterface. For this I wish to extract BaseColor. Is there a way to access BaseColor? Here are few things I have tried so far (none works) :
TMap<FString, UMaterialInterface*> MaterialsUnique;
for( const auto &EachMaterial : MaterialsUnique) {
const auto Mat = EachMaterial.Value->GetMaterial();
const FColorMaterialInput BaseColorMat = Mat->BaseColor;
const FColor BaseColor = BaseColorMat.Constant;
UE_LOG(SLDisplay, Display, TEXT("## \t-->Material name : [ %s ][ %s ]"),
*Mat->GetName(),
*BaseColor.ToString());
UE_LOG(SLDisplay, Display, TEXT("## \t { %f, %f, %f }"),
BaseColorMat.MaskR,
BaseColorMat.MaskG,
BaseColorMat.MaskB);
TArray<FExpressionOutput> Outputs = BaseColorMat.Expression->GetOutputs();
FExpressionOutput* Output = Outputs.GetData();
UE_LOG(SLDisplay, Display, TEXT("## \t { %i, %i, %i }"),
Output->MaskR,
Output->MaskG,
Output->MaskB);
UE_LOG(SLDisplay, Display, TEXT("## \t %s { %i, %i, %i }"),
*BaseColorMat.InputName,
BaseColorMat.Constant.R,
BaseColorMat.Constant.G,
BaseColorMat.Constant.B);
}