Simplygon 10.2.10100.0

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Normal caster ​

The NormalCaster is used to cast normals data from the original geometries.

The following example shows how to use the NormalCaster to generate a normal map.

cpp
void CastNormalData( spMaterial output_material, spMappingImage mapping_image, spMaterialTable source_materials )
{
    // Cast the data using a normal caster.
    spNormalCaster cast = sg->CreateNormalCaster();       
    cast->SetSourceMaterials( source_materials );
    cast->SetMappingImage( mapping_image );       
    // Set output image settings. Use 3 channels
    // (the x, y and z values for the normal).
    cast->SetOutputChannels( 3 );
    cast->SetOutputChannelBitDepth( 8 );       
    cast->SetDilation( 10 );       
    cast->SetOutputFilePath( "normals_out.png" );
    cast->SetFlipBackfacingNormals( false );       
    cast->SetGenerateTangentSpaceNormals( true );   
   
    // Cast the data   
    cast->CastMaterials();
       
    // Set material to point to created texture filename.      
    output_material->SetTexture( SG_MATERIAL_CHANNEL_NORMALS, "normals_out.png" );
}
csharp
void CastNormalData(spMaterial output_material, spMappingImage mapping_image, spMaterialTable source_materials)
{
    // Cast the data using a normal caster.
    spNormalCaster cast = sg.CreateNormalCaster();
    cast.SetSourceMaterials(source_materials);
    cast.SetMappingImage(mapping_image);
    // Set output image settings. Use 3 channels
    // (the x, y and z values for the normal).
    cast.SetOutputChannels(3);
    cast.SetOutputChannelBitDepth(8);
    cast.SetDilation(10);
    cast.SetOutputFilePath("normals_out.png");
    cast.SetFlipBackfacingNormals(false);
    cast.SetGenerateTangentSpaceNormals(true);

    // Cast the data   
    cast.RunProcessing();

    // Set material to point to created texture filename.      
    output_material.SetTexture(Simplygon.Simplygon.SG_MATERIAL_CHANNEL_NORMALS, "normals_out.png");
}
python
def CastNormalData( output_material, mapping_image, source_materials ):
{
    #  Cast the data using a normal caster.
    cast = sg.CreateNormalCaster()       
    cast.SetSourceMaterials( source_materials )
    cast.SetMappingImage( mapping_image )       
	
    #  Set output image settings. Use 3 channels
    #  (the x, y and z values for the normal).
    cast.SetOutputChannels( 3 )
    cast.SetOutputChannelBitDepth( 8 )       
    cast.SetDilation( 10 )       
    cast.SetOutputFilePath( "normals_out.png" )
    cast.SetFlipBackfacingNormals( False )       
    cast.SetGenerateTangentSpaceNormals( True )   
   
    #  Cast the data   
    cast.CastMaterials()
       
    #  Set material to point to created texture filename.      
    output_material.SetTexture( Simplygon.SG_MATERIAL_CHANNEL_NORMALS, "normals_out.png" )
}