public static IFCAnyHandle GetOrCreateMaterialStyle(Document document, ExporterIFC exporterIFC, ElementId materialId)
{
IFCAnyHandle styleHnd = ExporterCacheManager.MaterialIdToStyleHandleCache.Find(materialId);
if (styleHnd == null)
{
Material material = document.GetElement(materialId) as Material;
if (material == null)
{
return(null);
}
string matName = material.Name;
Color color = material.Color;
double blueVal = color.Blue / 255.0;
double greenVal = color.Green / 255.0;
double redVal = color.Red / 255.0;
IFCFile file = exporterIFC.GetFile();
IFCAnyHandle colorHnd = IFCInstanceExporter.CreateColourRgb(file, null, redVal, greenVal, blueVal);
double transparency = ((double)material.Transparency) / 100.0;
IFCData smoothness = IFCDataUtil.CreateAsNormalisedRatioMeasure(((double)material.Smoothness) / 100.0);
IFCData specularExp = IFCDataUtil.CreateAsSpecularExponent(material.Shininess);
IFCReflectanceMethod method = IFCReflectanceMethod.NotDefined;
IFCAnyHandle renderingHnd = IFCInstanceExporter.CreateSurfaceStyleRendering(file, colorHnd, transparency,
null, null, null, null, smoothness, specularExp, method);
ICollection <IFCAnyHandle> surfStyles = new HashSet <IFCAnyHandle>();
surfStyles.Add(renderingHnd);
IFCSurfaceSide surfSide = IFCSurfaceSide.Both;
styleHnd = IFCInstanceExporter.CreateSurfaceStyle(file, matName, surfSide, surfStyles);
ExporterCacheManager.MaterialIdToStyleHandleCache.Register(materialId, styleHnd);
}
return(styleHnd);
}
/// <summary>
/// Creates a handle representing an IfcSurfaceStyleRendering and assigns it to the file.
/// </summary>
/// <param name="file">The file.</param>
/// <param name="surfaceColour">The optional surface colour.</param>
/// <param name="transparency">The optional transparency.</param>
/// <param name="diffuseColour">The optional diffuse colour, as a handle or normalised ratio.</param>
/// <param name="transmissionColour">The optional transmission colour, as a handle or normalised ratio.</param>
/// <param name="diffuseTransmissionColour">The optional diffuse transmission colour, as a handle or normalised ratio.</param>
/// <param name="reflectionColour">The optional reflection colour, as a handle or normalised ratio.</param>
/// <param name="specularColour">The optional specular colour, as a handle or normalised ratio.</param>
/// <param name="specularHighlight">The optional specular highlight, as a handle or normalised ratio.</param>
/// <param name="method">The reflectance method.</param>
/// <returns>The handle.</returns>
public static IFCAnyHandle CreateSurfaceStyleRendering(IFCFile file, IFCAnyHandle surfaceColour,
double? transparency, IFCData diffuseColour,
IFCData transmissionColour, IFCData diffuseTransmissionColour,
IFCData reflectionColour, IFCData specularColour, IFCData specularHighlight, IFCReflectanceMethod method)
{
ValidSurfaceStyleShading(surfaceColour);
IFCAnyHandle surfaceStyleRendering = CreateInstance(file, IFCEntityType.IfcSurfaceStyleRendering);
SetSurfaceStyleShading(surfaceStyleRendering, surfaceColour);
IFCAnyHandleUtil.SetAttribute(surfaceStyleRendering, "Transparency", transparency);
IFCAnyHandleUtil.SetAttribute(surfaceStyleRendering, "DiffuseColour", diffuseColour);
IFCAnyHandleUtil.SetAttribute(surfaceStyleRendering, "TransmissionColour", transmissionColour);
IFCAnyHandleUtil.SetAttribute(surfaceStyleRendering, "DiffuseTransmissionColour", diffuseTransmissionColour);
IFCAnyHandleUtil.SetAttribute(surfaceStyleRendering, "ReflectionColour", reflectionColour);
IFCAnyHandleUtil.SetAttribute(surfaceStyleRendering, "SpecularColour", specularColour);
IFCAnyHandleUtil.SetAttribute(surfaceStyleRendering, "SpecularHighlight", specularHighlight);
IFCAnyHandleUtil.SetAttribute(surfaceStyleRendering, "ReflectanceMethod", method);
return surfaceStyleRendering;
}
