private static IfcStyledItem ToIfcStyledItem(this Material material, IfcRepresentationItem shape, Document doc)
{
var color = material.Color.ToIfcColourRgb(doc);
var shading = new IfcSurfaceStyleShading(color);
var styles = new List <IfcSurfaceStyleElementSelect> {
};
styles.Add(new IfcSurfaceStyleElementSelect(shading));
var surfaceStyle = new IfcSurfaceStyle(material.Name, IfcSurfaceSide.POSITIVE, styles);
var styleSelect = new IfcPresentationStyleSelect(surfaceStyle);
var assign = new IfcPresentationStyleAssignment(new List <IfcPresentationStyleSelect> {
styleSelect
});
var assignments = new List <IfcPresentationStyleAssignment>();
assignments.Add(assign);
var styledByItem = new IfcStyledItem(shape, assignments, material.Name);
doc.AddEntity(color);
doc.AddEntity(shading);
doc.AddEntity(surfaceStyle);
doc.AddEntity(styleSelect);
doc.AddEntity(assign);
return(styledByItem);
}
private static Boolean tryGetColorFromIfcRepresentationItem(IfcRepresentationItem reprItem, out Color color)
{
color = Color.Black;
try
{
if (reprItem.mStyledByItem != null)
{
IfcStyledItem ifcStyledItem = reprItem.mStyledByItem;
IfcPresentationStyleAssignment sas = (IfcPresentationStyleAssignment)ifcStyledItem.Styles[0];
IfcSurfaceStyle ss = (IfcSurfaceStyle)sas.Styles[0];
IfcSurfaceStyleRendering ssr = (IfcSurfaceStyleRendering)ss.Styles[0];
int alpha = Convert.ToInt32((1 - ssr.Transparency) * 255);
color = Color.FromArgb(alpha, ssr.SurfaceColour.Colour);
return(true);
}
}
catch (Exception e)
{
//debug += e.Message + "\n";
}
return(false);
}
/// <summary>
/// returns the surfacestyle associated with this PresentationStyleAssignment, null if no sufacestyle is defined
/// </summary>
/// <param name = "style"></param>
/// <returns></returns>
public static IfcSurfaceStyle GetSurfaceStyle(this IfcPresentationStyleAssignment style)
{
return(style.Styles.OfType <IfcSurfaceStyle>().FirstOrDefault());
}
