/// <summary>
/// Get various color values from element's material
/// </summary>
/// <param name="element">the element</param>
/// <param name="materialColor">element's material color</param>
/// <param name="surfacePatternColor">element's material surface pattern color</param>
/// <param name="cutPatternColor">element's material cut pattern color</param>
/// <param name="opacity">material opacity</param>
public static void GetElementColorAndTransparency(Element element, out Color materialColor, out Color surfacePatternColor, out Color cutPatternColor, out double?opacity)
{
Category category = element.Category;
materialColor = null;
surfacePatternColor = null;
cutPatternColor = null;
opacity = null;
ElementId materialId = ElementId.InvalidElementId;
ParameterUtil.GetElementIdValueFromElementOrSymbol(element, BuiltInParameter.MATERIAL_ID_PARAM, out materialId);
Material matElem = element.Document.GetElement(materialId) as Material;
if (matElem == null)
{
if (category == null)
{
return;
}
matElem = category.Material;
}
if (matElem != null)
{
materialColor = GetSafeColor(matElem.Color);
surfacePatternColor = GetSafeColor(matElem.SurfacePatternColor);
cutPatternColor = GetSafeColor(matElem.CutPatternColor);
opacity = (double)(100 - matElem.Transparency) / 100;
}
else
{
Color color = GetSafeColor(category.LineColor);
// Grey is returned in place of pure black. For systems which default to a black background color,
// Grey is more of a contrast.
if (color.Red == 0 && color.Green == 0 && color.Blue == 0)
{
color = new Color(0x7f, 0x7f, 0x7f);
}
materialColor = color;
surfacePatternColor = color;
cutPatternColor = color;
opacity = 1.0;
}
}
