//--------------------------------------------------------------------------------------------------
public VectorExportLayer[] PrepareExportLayers(IEnumerable <TopoDS_Shape> breps)
{
// Create algo instance
if (_UseTriangulation)
{
_HlrAlgo = new HlrBRepAlgoPoly(breps);
}
else
{
_HlrAlgo = new HlrBRepAlgo(breps);
}
// Set Projection
_HlrAlgo.SetProjection(_Projection);
// Do it
_HlrAlgo.Update();
// Export
List <VectorExportLayer> layers = new List <VectorExportLayer>(4);
_CreateLayer(layers, VectorExportLayerType.Outline, HlrEdgeType.VisibleOutline, HlrEdgeType.VisibleSharp, _HlrAlgo);
_CreateLayer(layers, VectorExportLayerType.Inline, HlrEdgeType.VisibleSmooth, HlrEdgeType.VisibleSewn, _HlrAlgo);
_CreateLayer(layers, VectorExportLayerType.HiddenOutline, HlrEdgeType.HiddenOutline, HlrEdgeType.HiddenSharp, _HlrAlgo);
_CreateLayer(layers, VectorExportLayerType.HiddenInline, HlrEdgeType.HiddenSmooth, HlrEdgeType.HiddenSewn, _HlrAlgo);
return(layers.ToArray());
}
//--------------------------------------------------------------------------------------------------
void _CreateLayer(List <VectorExportLayer> layers, VectorExportLayerType layerTypeType, HlrEdgeType edgeType1, HlrEdgeType edgeType2, HlrBRepAlgoBase hlrAlgo)
{
var shape1 = _IncludeEdgeTypes.Contains(edgeType1) ? hlrAlgo.GetResult(edgeType1) : null;
var shape2 = _IncludeEdgeTypes.Contains(edgeType2) ? hlrAlgo.GetResult(edgeType2) : null;
if (shape1 != null && shape2 != null)
{
var builder = new BRep_Builder();
var compound = new TopoDS_Compound();
builder.MakeCompound(compound);
builder.Add(compound, hlrAlgo.GetResult(edgeType1));
builder.Add(compound, hlrAlgo.GetResult(edgeType2));
layers.Add(new VectorExportLayer(layerTypeType, compound));
}
else if (shape1 != null)
{
layers.Add(new VectorExportLayer(layerTypeType, shape1));
}
else if (shape2 != null)
{
layers.Add(new VectorExportLayer(layerTypeType, shape2));
}
}
