public static SceneObject BuildPlaneIntersectionCurveSO(SOFactory factory, FScene scene, TypedAttribSet attributes)
{
PlaneIntersectionCurveSO so = new PlaneIntersectionCurveSO();
so.Create(scene.DefaultCurveSOMaterial);
factory.RestorePolyCurveSOType(scene, attributes, so);
return(so);
}
public static PlaneIntersectionCurveSO CreateFromPlane(DMeshSO TargetSO, Frame3f PlaneS, SOMaterial material, FScene scene, double fNormalOffset = 0.0f)
{
Frame3f PlaneO = SceneTransforms.SceneToObject(TargetSO, PlaneS);
PlaneIntersectionCurves curves = new PlaneIntersectionCurves(TargetSO.Mesh, PlaneO, 1)
{
NormalOffset = fNormalOffset
};
curves.Compute();
if (curves.Loops.Length != 1)
{
throw new Exception("PlaneIntersectionSO.CreateFromPlane: got more than one cut loop?");
}
DCurve3 loop = curves.Loops[0];
// map loop back into plane frame
for (int i = 0; i < loop.VertexCount; ++i)
{
loop[i] = PlaneO.ToFrameP(loop[i]);
}
PlaneIntersectionCurveSO curveSO = new PlaneIntersectionCurveSO()
{
Curve = loop
};
curveSO.Create(material);
Frame3f curveFrame = SceneTransforms.ObjectToScene(TargetSO, PlaneO);
curveSO.SetLocalFrame(curveFrame, CoordSpace.ObjectCoords);
scene.History.PushChange(
new AddSOChange()
{
scene = scene, so = curveSO, bKeepWorldPosition = false
});
scene.History.PushInteractionCheckpoint();
return(curveSO);
}