public static void TestIsoCurve()
{
var meshSO = OG.Scan.SO;
DMesh3 mesh = new DMesh3(meshSO.Mesh);
DMeshAABBTree3 spatial = new DMeshAABBTree3(mesh, true);
AxisAlignedBox3d bounds = mesh.CachedBounds;
Frame3f plane = new Frame3f(bounds.Center);
Func <Vector3d, double> planeSignedDistanceF = (v) => {
return((v - plane.Origin).Dot(plane.Y));
};
Func <Vector3d, double> sphereDistF = (v) => {
double d = v.Distance(plane.Origin);
return(d - 50.0);
};
MeshIsoCurves iso = new MeshIsoCurves(mesh, sphereDistF);
iso.Compute();
DGraph3Util.Curves curves = DGraph3Util.ExtractCurves(iso.Graph);
foreach (DCurve3 c in curves.Loops)
{
List <Vector3d> verts = new List <Vector3d>(c.Vertices);
for (int i = 0; i < verts.Count; ++i)
{
verts[i] = verts[i] + 0.5 * mesh.GetTriNormal(spatial.FindNearestTriangle(verts[i]));
}
DebugUtil.EmitDebugCurve("curve", verts.ToArray(), true, 1, Colorf.Red, Colorf.Red, meshSO.RootGameObject, false);
}
foreach (DCurve3 c in curves.Paths)
{
List <Vector3d> verts = new List <Vector3d>(c.Vertices);
for (int i = 0; i < verts.Count; ++i)
{
verts[i] = verts[i] + 0.5 * mesh.GetTriNormal(spatial.FindNearestTriangle(verts[i]));
}
DebugUtil.EmitDebugCurve("curve", verts.ToArray(), false, 1, Colorf.Blue, Colorf.Blue, meshSO.RootGameObject, false);
}
//foreach ( Segment3d seg in iso.Graph.Segments()) {
// Vector3d a = seg.P0 + 1.0 * mesh.GetTriNormal(spatial.FindNearestTriangle(seg.P0));
// Vector3d b = seg.P1 + 1.0 * mesh.GetTriNormal(spatial.FindNearestTriangle(seg.P1));
// DebugUtil.EmitDebugLine("seg", a, b, 1.0f, Colorf.Red, meshSO.RootGameObject, false);
//}
}
