virtual public void Setup()
{
// push history stream, so that we can do undo/redo internal to tool,
// that will not end up in external history
push_history_stream();
if (PreviewMaterial == null)
{
PreviewMaterial = SOMaterial.CreateFlatShaded("holefill_preview", Colorf.DimGrey);
}
if (HoleBoundaryMaterial == null)
{
HoleBoundaryMaterial = SOMaterial.CreateStandard("holefill_boundary", Colorf.PivotYellow);
}
previewSO = new DMeshSO();
previewSO.EnableSpatial = false;
previewSO.Create(new DMesh3(Target.Mesh), PreviewMaterial);
previewSO.Name = "HoleFillTool_preview";
previewSO.SetLocalFrame(Target.GetLocalFrame(CoordSpace.ObjectCoords), CoordSpace.ObjectCoords);
previewSO.SetLocalScale(Target.GetLocalScale());
previewSO.OnMeshModified += PreviewSO_OnMeshModified;
Scene.AddSceneObject(previewSO);
sceneToObjUnitScale = SceneTransforms.SceneToObject(Target, 1.0f);
Loops = new MeshBoundaryLoops(previewSO.Mesh);
boundaryGeom = new BoundaryCurveSet(previewSO.RootGameObject, HoleBoundaryMaterial.ToFMaterial());
boundaryGeom.Radius = BorderRadius.SceneValue * sceneToObjUnitScale;
boundaryGeom.Initialize(Loops);
}
void fill_any_holes(out int nRemaining, out bool saw_spans)
{
MeshBoundaryLoops loops = new MeshBoundaryLoops(Mesh);
nRemaining = 0;
saw_spans = loops.SawOpenSpans;
foreach (var loop in loops)
{
if (Cancelled())
{
break;
}
MinimalHoleFill filler = new MinimalHoleFill(Mesh, loop);
bool filled = filler.Apply();
if (filled == false)
{
if (Cancelled())
{
break;
}
SimpleHoleFiller fallback = new SimpleHoleFiller(Mesh, loop);
filled = fallback.Fill();
}
}
}
public static void TestOffsetAnimation()
{
Window window = new Window("TestFill");
window.SetDefaultSize(600, 600);
window.SetPosition(WindowPosition.Center);
DMesh3 mesh = StandardMeshReader.ReadMesh("c:\\scratch\\remesh.obj");
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh);
DCurve3 curve = loops[0].ToCurve();
Polygon2d poly = new Polygon2d();
foreach (Vector3d v in curve.Vertices)
{
poly.AppendVertex(v.xy);
}
Outer = new GeneralPolygon2d(poly);
DebugViewCanvas view = new DebugViewCanvas();
view.AddPolygon(Outer, Colorf.Black);
DGraph2 graph = TopoOffset2d.QuickCompute(Outer, AnimOffset, AnimSpacing);
view.AddGraph(graph, Colorf.Red);
window.Add(view);
window.ShowAll();
Active = view;
}
InteractiveRemesher make_remesher(DMesh3 mesh)
{
var m = new InteractiveRemesher(mesh);
m.PreventNormalFlips = true;
double mine, maxe, avge;
MeshQueries.EdgeLengthStats(mesh, out mine, out avge, out maxe);
m.SetTargetEdgeLength(avge * EdgeLengthMultiplier);
m.SmoothSpeedT = SmoothSpeed;
if (Reproject)
{
m.SetProjectionTarget(MeshProjectionTarget.Auto(mesh));
}
if (RemeshBoundary)
{
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh);
int k = 1;
foreach (var loop in loops)
{
MeshConstraintUtil.ConstrainVtxLoopTo(m, loop.Vertices, new DCurveProjectionTarget(loop.ToCurve()), k++);
}
}
else if (PreserveBoundary)
{
MeshConstraintUtil.FixAllBoundaryEdges(m);
}
return(m);
}
public bool Compute()
{
PlanarMesh = BuildPlanarMesh(false);
InflatedMesh = ComputeInflation(PlanarMesh);
DMesh3 remeshed = GenerateRemesh(InflatedMesh);
Flatten(remeshed);
ResultMesh = ComputeInflation(remeshed);
MeshBoundaryLoops loops = new MeshBoundaryLoops(ResultMesh);
DMesh3 otherSide = new DMesh3(ResultMesh);
foreach (int vid in otherSide.VertexIndices())
{
Vector3d v = otherSide.GetVertex(vid);
v.z = -v.z;
otherSide.SetVertex(vid, v);
}
otherSide.ReverseOrientation();
MeshEditor editor = new MeshEditor(ResultMesh);
int[] mapVArray;
editor.AppendMesh(otherSide, out mapVArray);
IndexMap mapV = new IndexMap(mapVArray);
foreach (EdgeLoop loop in loops)
{
int[] otherLoop = (int[])loop.Vertices.Clone();
IndexUtil.Apply(otherLoop, mapV);
editor.StitchLoop(loop.Vertices, otherLoop);
}
Remesher remesh = new Remesher(ResultMesh);
remesh.SetTargetEdgeLength(TargetEdgeLength);
remesh.SmoothSpeedT = 0.25f;
for (int k = 0; k < 10; ++k)
{
remesh.BasicRemeshPass();
}
ResultMesh = new DMesh3(ResultMesh, true);
LaplacianMeshSmoother smoother = new LaplacianMeshSmoother(ResultMesh);
foreach (int vid in ResultMesh.VertexIndices())
{
smoother.SetConstraint(vid, ResultMesh.GetVertex(vid), 0.5f, false);
}
smoother.SolveAndUpdateMesh();
return(true);
}
protected override void SolveInstance(IGH_DataAccess DA)
{
this.Message = type.ToString();
DMesh3_goo goo = null;
double eLen = 1;
DA.GetData(0, ref goo);
DA.GetData(1, ref eLen);
DMesh3 msh = new DMesh3(goo.Value);
DMesh3 outMesh = msh;
MeshBoundaryLoops loops = new MeshBoundaryLoops(outMesh, true);
var lps = loops.Loops;
bool hasLoops = (lps.Count > 0);
int iter = 0;
while (hasLoops)
{
EdgeLoop loop = lps[0];
switch (type)
{
case HoleFillerType.Planar:
outMesh = HoleFillMethods.PlanarFill(outMesh, loop, eLen);
break;
case HoleFillerType.Smooth:
outMesh = HoleFillMethods.SmoothFill(outMesh, loop, eLen);
break;
case HoleFillerType.Minimal:
outMesh = HoleFillMethods.MinimalFill(outMesh, loop, eLen);
break;
default:
outMesh = HoleFillMethods.PlanarFill(outMesh, loop, eLen);
break;
}
loops = new MeshBoundaryLoops(outMesh, true);
lps = loops.Loops;
hasLoops = (lps.Count > 0);
iter++;
if (iter > 500)
{
break;
}
}
this.Message += "\n" + iter.ToString() + " holes filled.";
DA.SetData(0, outMesh);
}
Polygon2d make_poly(DMesh3 mesh, IEnumerable <int> triangles)
{
DSubmesh3 submesh = new DSubmesh3(mesh, triangles);
MeshBoundaryLoops loops = new MeshBoundaryLoops(submesh.SubMesh);
Util.gDevAssert(loops.Loops.Count == 1);
return(make_poly(submesh.SubMesh, loops.Loops[0]));
}
public static void test_auto_fill()
{
DMesh3 mesh = TestUtil.LoadTestInputMesh("autofill_cases.obj");
//DMesh3 mesh = TestUtil.LoadTestInputMesh("autofill_tempcase1.obj");
//DMesh3 mesh = TestUtil.LoadTestInputMesh("autofill_planarcase.obj");
//DMesh3 mesh = TestUtil.LoadTestInputMesh("autofill_box_edge_strip.obj");
//DMesh3 mesh = TestUtil.LoadTestInputMesh("autofill_box_edge_strip_2.obj");
//DMesh3 mesh = TestUtil.LoadTestInputMesh("crazyhole.obj");
double mine, maxe, avge;
MeshQueries.EdgeLengthStats(mesh, out mine, out maxe, out avge);
int ROUNDS = 1;
for (int k = 0; k < ROUNDS; ++k)
{
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh);
foreach (EdgeLoop loop in loops)
{
AutoHoleFill fill = new AutoHoleFill(mesh, loop);
fill.TargetEdgeLength = avge;
fill.Apply();
}
if (k == ROUNDS - 1)
{
continue;
}
RemesherPro r = new RemesherPro(mesh);
r.SetTargetEdgeLength(avge);
for (int j = 0; j < 10; ++j)
{
r.FastSplitIteration();
}
MergeCoincidentEdges merge = new MergeCoincidentEdges(mesh);
merge.Apply();
}
TestUtil.WriteTestOutputMesh(mesh, "autofill_result.obj");
//DMesh3 mesh = new DMesh3();
//SphericalFibonacciPointSet ps = new SphericalFibonacciPointSet();
//for (int k = 0; k < ps.N; ++k) {
// MeshEditor.AppendBox(mesh, ps[k], ps[k], 0.05f);
//}
//Random r = new Random(31337);
//Vector3d[] pts = TestUtil.RandomPoints3(10000, r, Vector3d.Zero);
//foreach ( Vector3d pt in pts ) {
// pt.Normalize();
// int nearest = ps.NearestPoint(pt, true);
// Vector3d p = ps[nearest];
// MeshEditor.AppendLine(mesh, new Segment3d(p, p + 0.25f * pt), 0.01f);
//}
//TestUtil.WriteTestOutputMesh(mesh, "fibonacci.obj");
}
public static void compute_distance_image()
{
DMesh3 mesh = StandardMeshReader.ReadMesh("c:\\scratch\\remesh.obj");
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh);
DCurve3 curve = loops[0].ToCurve();
Polygon2d poly = new Polygon2d();
foreach (Vector3d v in curve.Vertices)
{
poly.AppendVertex(v.xy);
}
int N = 1024;
double cellsize = poly.Bounds.MaxDim / (double)N;
Vector2d o = poly.Bounds.Min;
o -= 4 * cellsize * Vector2d.One;
N += 8;
ShiftGridIndexer2 indexer = new ShiftGridIndexer2(poly.Bounds.Min, cellsize);
double[] df = new double[N * N];
double maxd = 0;
for (int yi = 0; yi < N; ++yi)
{
for (int xi = 0; xi < N; ++xi)
{
Vector2d p = indexer.FromGrid(new Vector2i(xi, yi));
double d = Math.Sqrt(poly.DistanceSquared(p));
df[yi * N + xi] = d;
maxd = Math.Max(d, maxd);
}
}
SKBitmap bmp = new SKBitmap(N, N);
for (int yi = 0; yi < N; ++yi)
{
for (int xi = 0; xi < N; ++xi)
{
double d = df[yi * N + xi];
float f = (float)(d / maxd);
byte b = (byte)(int)(f * 255);
bmp.SetPixel(xi, yi, new SKColor(b, b, b));
}
}
using (var image = SKImage.FromBitmap(bmp))
using (var data = image.Encode(SKEncodedImageFormat.Png, 80)) {
// save the data to a stream
using (var stream = File.OpenWrite("c:\\scratch\\distances.png")) {
data.SaveTo(stream);
}
}
}
public static void PreserveBoundaryLoops(MeshConstraints cons, NGonsCore.geometry3Sharp.mesh.DMesh3 mesh)
{
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh);
foreach (EdgeLoop loop in loops)
{
DCurve3 loopC = MeshUtil.ExtractLoopV(mesh, loop.Vertices);
DCurveProjectionTarget target = new DCurveProjectionTarget(loopC);
ConstrainVtxLoopTo(cons, mesh, loop.Vertices, target);
}
}
void compute_inner_wall()
{
if (DebugStep <= 0)
{
SocketMesh = new DMesh3(TrimmedMesh);
return;
}
InnerMesh = new DMesh3(TrimmedMesh);
// compute flare band
Func <int, double> flareOffsetF = (vid) => { return(0); };
if (flare_offset > 0 && flare_band_width > 0)
{
MeshBoundaryLoops loops = new MeshBoundaryLoops(InnerMesh);
if (loops.Count != 1)
{
goto done_inner_wall;
}
DijkstraGraphDistance dist = DijkstraGraphDistance.MeshVertices(InnerMesh);
dist.TrackOrder = true;
foreach (int vid in loops[0].Vertices)
{
dist.AddSeed(vid, 0);
}
dist.ComputeToMaxDistance(1.25f * (float)flare_band_width);
flareOffsetF = (viD) => {
float d = dist.GetDistance(viD);
if (d < flare_band_width)
{
double t = d / flare_band_width;
t = 1 - t * t;
t = t * t * t;
return(t * flare_offset);
}
return(0);
};
}
gParallel.ForEach(InnerMesh.VertexIndices(), (vid) => {
Vector3d v = InnerMesh.GetVertex(vid);
Vector3d n = InnerMesh.GetVertexNormal(vid);
double offset = inner_offset + flareOffsetF(vid);
InnerMesh.SetVertex(vid, v + offset * n);
});
done_inner_wall:
MeshNormals.QuickCompute(InnerMesh);
}
protected override void SolveInstance(IGH_DataAccess DA)
{
DMesh3_goo goo = null;
DA.GetData(0, ref goo);
DMesh3 mesh = new DMesh3(goo.Value);
MeshBoundaryLoops bounds = new MeshBoundaryLoops(mesh, true);
DA.SetDataList(0, bounds.Loops);
}
EdgeLoop select_loop_tris_hint(MeshBoundaryLoops loops)
{
var hint_edges = new HashSet <int>();
foreach (int tid in BorderHintTris)
{
if (Mesh.IsTriangle(tid) == false)
{
continue;
}
Index3i et = Mesh.GetTriEdges(tid);
for (int j = 0; j < 3; ++j)
{
if (Mesh.IsBoundaryEdge(et[j]))
{
hint_edges.Add(et[j]);
}
}
}
int N = loops.Count;
int best_loop = -1;
int max_votes = 0;
for (int li = 0; li < N; ++li)
{
int votes = 0;
EdgeLoop l = loops[li];
foreach (int eid in l.Edges)
{
if (hint_edges.Contains(eid))
{
votes++;
}
}
if (votes > max_votes)
{
best_loop = li;
max_votes = votes;
}
}
if (best_loop == -1)
{
return(null);
}
return(loops[best_loop]);
}
public static void test_mesh_boundary()
{
//List<int> cases = new List<int>() { 0, 1, 2, 3 };
List <int> cases = new List <int>()
{
0, 1, 2
};
// TODO: currently this case fails to find a simple boundary loop.
//List<int> cases = new List<int>() { 3 };
foreach (int num in cases)
{
string name;
DMesh3 mesh = MakeBoundaryTestMesh(num, out name);
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh);
}
}
public static void test_basic_fills()
{
// test trivial hole-fill
//List<int> tests = new List<int>() { 0, 1 };
List <int> tests = new List <int>()
{
2
};
foreach (int num_test in tests)
{
string name;
DMesh3 mesh = MakeEditTestMesh(num_test, out name);
mesh.EnableTriangleGroups();
MeshBoundaryLoops loops;
try {
loops = new MeshBoundaryLoops(mesh);
Debug.Assert(loops.Loops.Count > 0);
} catch (Exception) {
System.Console.WriteLine("failed to extract boundary loops for " + name);
continue;
}
System.Console.WriteLine("Closing " + name + " - {0} holes", loops.Loops.Count);
bool bOK = true;
foreach (EdgeLoop loop in loops.Loops)
{
SimpleHoleFiller filler = new SimpleHoleFiller(mesh, loop);
Debug.Assert(filler.Validate() == ValidationStatus.Ok);
bOK = bOK && filler.Fill(1);
Debug.Assert(bOK);
}
System.Console.WriteLine("{0}", (bOK) ? "Ok" : "Failed");
if (bOK)
{
Debug.Assert(mesh.CachedIsClosed);
}
TestUtil.WriteTestOutputMesh(mesh, name + "_filled" + ".obj");
}
} // test_basic_fills
public void Initialize(MeshBoundaryLoops loops)
{
if (CurveSet != null)
{
Clear();
}
CurveSet = new Curve[loops.Count];
for (int i = 0; i < loops.Count; ++i)
{
Curve c = new Curve();
c.id = i;
c.curve = loops[i].ToCurve().ResampleSharpTurns();
c.bounds = c.curve.GetBoundingBox();
c.spatial = new DCurve3BoxTree(c.curve);
c.visible = true;
CurveSet[i] = c;
}
invalidate_geometry();
}
static GeneralPolygon2d GetPolygonFromMesh(string sPath)
{
DMesh3 mesh = StandardMeshReader.ReadMesh(sPath);
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh);
PlanarComplex complex = new PlanarComplex();
foreach (var loop in loops)
{
Polygon2d poly = new Polygon2d();
DCurve3 curve = MeshUtil.ExtractLoopV(mesh, loop.Vertices);
foreach (Vector3d v in curve.Vertices)
{
poly.AppendVertex(v.xy);
}
complex.Add(poly);
}
PlanarComplex.SolidRegionInfo solids = complex.FindSolidRegions(0.0, false);
return(solids.Polygons[0]);
}
public static void test_add_change()
{
DMesh3 testMesh = TestUtil.LoadTestInputMesh("bunny_open_base.obj");
DMesh3 copy = new DMesh3(testMesh);
MeshBoundaryLoops loops = new MeshBoundaryLoops(copy);
foreach (var loop in loops)
{
SimpleHoleFiller filler = new SimpleHoleFiller(copy, loop);
bool ok = filler.Fill();
Util.gDevAssert(ok);
AddTrianglesMeshChange change = new AddTrianglesMeshChange();
change.InitializeFromExisting(copy,
new List <int>()
{
filler.NewVertex
}, filler.NewTriangles);
DMesh3 tmp = new DMesh3(copy);
change.Revert(copy);
copy.CheckValidity(true);
if (!copy.IsSameMesh(testMesh, true))
{
System.Console.WriteLine("FAILED copy.IsSameMesh() 1");
}
change.Apply(copy);
copy.CheckValidity(true);
if (!copy.IsSameMesh(tmp, true))
{
System.Console.WriteLine("FAILED copy.IsSameMesh() 1");
}
}
System.Console.WriteLine("test_add_change ok");
}
/// <summary>
/// this runs inside SO.SafeMeshRead
/// </summary>
private object LockedComputeMeshBoundaryData(DMesh3 mesh)
{
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh, true);
MeshBoundaryData bd = new MeshBoundaryData();
foreach (EdgeLoop loop in loops.Loops)
{
bd.Loops.Add(loop.ToCurve());
}
if (loops.SawOpenSpans)
{
foreach (EdgeSpan span in loops.Spans)
{
bd.Spans.Add(span.ToCurve());
}
}
bd.timestamp = mesh.ShapeTimestamp;
return(bd);
}
private void FillAnyHoles(DMesh3 mesh,
CancellationToken cancellationToken,
out int nRemaining,
out bool sawSpans)
{
var loops = new MeshBoundaryLoops(mesh);
nRemaining = 0;
sawSpans = loops.SawOpenSpans;
foreach (var loop in loops)
{
cancellationToken.ThrowIfCancellationRequested();
var filler = new MinimalHoleFill(mesh, loop);
bool filled = filler.Apply();
if (filled == false)
{
cancellationToken.ThrowIfCancellationRequested();
var fallback = new SimpleHoleFiller(mesh, loop);
fallback.Fill();
}
}
}
public static void test_smooth_fill()
{
//DMesh3 mesh = TestUtil.LoadTestInputMesh("n_holed_bunny.obj");
DMesh3 mesh = TestUtil.LoadTestInputMesh("crazyhole.obj");
double mine, maxe, avge;
MeshQueries.EdgeLengthStats(mesh, out mine, out maxe, out avge);
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh);
foreach (EdgeLoop loop in loops)
{
SmoothedHoleFill fill = new SmoothedHoleFill(mesh, loop);
fill.TargetEdgeLength = avge;
fill.SmoothAlpha = 1.0f;
fill.InitialRemeshPasses = 50;
fill.EnableLaplacianSmooth = true;
fill.ConstrainToHoleInterior = true;
fill.Apply();
}
TestUtil.WriteTestOutputMesh(mesh, "smooth_fill_result.obj");
}
void fill_trivial_holes(out int nRemaining, out bool saw_spans)
{
var loops = new MeshBoundaryLoops(Mesh);
nRemaining = 0;
saw_spans = loops.SawOpenSpans;
foreach (var loop in loops)
{
if (Cancelled())
{
break;
}
bool filled = false;
if (loop.VertexCount == 3)
{
var filler = new SimpleHoleFiller(Mesh, loop);
filled = filler.Fill();
}
else if (loop.VertexCount == 4)
{
var filler = new MinimalHoleFill(Mesh, loop);
filled = filler.Apply();
if (filled == false)
{
var fallback = new SimpleHoleFiller(Mesh, loop);
filled = fallback.Fill();
}
}
if (filled == false)
{
++nRemaining;
}
}
}
protected void set_output_meshes(DMesh3 inner, DMesh3 outer)
{
InnerMesh = inner;
OuterMesh = outer;
AxisAlignedBox3d bounds = OuterMesh.CachedBounds;
if (InnerMesh != null)
{
bounds.Contain(InnerMesh.CachedBounds);
}
// position center-top at origin
Vector3d top = bounds.Center + bounds.Extents[1] * Vector3d.AxisY;
if (InnerMesh != null)
{
MeshTransforms.Translate(InnerMesh, -top);
}
MeshTransforms.Translate(OuterMesh, -top);
CombinedBounds = OuterMesh.CachedBounds;
if (InnerMesh != null)
{
CombinedBounds.Contain(InnerMesh.CachedBounds);
}
if (InnerMesh != null)
{
var innerLoops = new MeshBoundaryLoops(InnerMesh);
InnerLoop = innerLoops[0];
}
var outerLoops = new MeshBoundaryLoops(OuterMesh);
OuterLoop = outerLoops[0];
}
public void FillAllHoles()
{
if (IsComputing)
{
return;
}
is_computing = true;
List <EdgeLoop> cur_loops = new List <EdgeLoop>(Loops.Loops);
Task.Run((Action)(() => {
var use_fill_type = FillType;
DMesh3 filled_mesh = (DMesh3)previewSO.SafeMeshRead((mesh) => { return(new DMesh3(mesh)); });
try_fills_again:
if (cancel_background_task)
{
return;
}
foreach (EdgeLoop loop in cur_loops)
{
if (cancel_background_task)
{
return;
}
try {
// skip loops that have been filled
if (loop.IsBoundaryLoop(filled_mesh) == false)
{
continue;
}
switch (use_fill_type)
{
case FillTypes.Trivial: fill_trivial(filled_mesh, loop); break;
case FillTypes.Minimal: fill_minimal(filled_mesh, loop); break;
case FillTypes.Smooth: fill_smooth(filled_mesh, loop); break;
}
} catch (Exception e) {
DebugUtil.Log("FillHolesTool.FillAllHoles: Exception: " + e.Message);
// ignore-and-continue for now
}
}
// recompute loops in case any failed
MeshBoundaryLoops loops = new MeshBoundaryLoops(filled_mesh, true);
// if any did fail, fall back to simpler fills in second pass
if (loops.Count > 0 && use_fill_type != FillTypes.Trivial)
{
if (use_fill_type == FillTypes.Smooth)
{
use_fill_type = FillTypes.Minimal;
}
else
{
use_fill_type = FillTypes.Trivial;
}
cur_loops = new List <EdgeLoop>(loops.Loops);
goto try_fills_again;
}
if (cancel_background_task)
{
return;
}
ReplaceEntireMeshChange change = new ReplaceEntireMeshChange(previewSO,
previewSO.Mesh, filled_mesh);
ThreadMailbox.PostToMainThread((Action)(() => {
this.Scene.History.PushChange(change, false);
this.Scene.History.PushInteractionCheckpoint();
}));
is_computing = false;
})); // end task
}
public bool Apply()
{
EdgeLoop useLoop = null;
if (FillLoop == null)
{
MeshBoundaryLoops loops = new MeshBoundaryLoops(Mesh, true);
if (loops.Count == 0)
{
return(false);
}
if (BorderHintTris != null)
{
useLoop = select_loop_tris_hint(loops);
}
if (useLoop == null && loops.MaxVerticesLoopIndex >= 0)
{
useLoop = loops[loops.MaxVerticesLoopIndex];
}
}
else
{
useLoop = FillLoop;
}
if (useLoop == null)
{
return(false);
}
// step 1: do stupid hole fill
SimpleHoleFiller filler = new SimpleHoleFiller(Mesh, useLoop);
if (filler.Fill() == false)
{
return(false);
}
if (useLoop.Vertices.Length <= 3)
{
FillTriangles = filler.NewTriangles;
FillVertices = new int[0];
return(true);
}
MeshFaceSelection tris = new MeshFaceSelection(Mesh);
tris.Select(filler.NewTriangles);
// extrude initial fill surface (this is used in socketgen for example)
if (OffsetDistance > 0)
{
MeshExtrudeFaces extrude = new MeshExtrudeFaces(Mesh, tris);
extrude.ExtrudedPositionF = (v, n, vid) => {
return(v + OffsetDistance * OffsetDirection);
};
if (!extrude.Extrude())
{
return(false);
}
tris.Select(extrude.JoinTriangles);
}
// if we aren't trying to stay inside hole, expand out a bit,
// which allows us to clean up ugly edges
if (ConstrainToHoleInterior == false)
{
tris.ExpandToOneRingNeighbours(2);
tris.LocalOptimize(true, true);
}
// remesh the initial coarse fill region
if (RemeshBeforeSmooth)
{
RegionRemesher remesh = new RegionRemesher(Mesh, tris);
remesh.SetTargetEdgeLength(TargetEdgeLength);
remesh.EnableSmoothing = (SmoothAlpha > 0);
remesh.SmoothSpeedT = SmoothAlpha;
if (ConfigureRemesherF != null)
{
ConfigureRemesherF(remesh, true);
}
for (int k = 0; k < InitialRemeshPasses; ++k)
{
remesh.BasicRemeshPass();
}
remesh.BackPropropagate();
tris = new MeshFaceSelection(Mesh);
tris.Select(remesh.CurrentBaseTriangles);
if (ConstrainToHoleInterior == false)
{
tris.LocalOptimize(true, true);
}
}
if (ConstrainToHoleInterior)
{
for (int k = 0; k < SmoothSolveIterations; ++k)
{
smooth_and_remesh_preserve(tris, k == SmoothSolveIterations - 1);
tris = new MeshFaceSelection(Mesh); tris.Select(FillTriangles);
}
}
else
{
smooth_and_remesh(tris);
tris = new MeshFaceSelection(Mesh); tris.Select(FillTriangles);
}
MeshVertexSelection fill_verts = new MeshVertexSelection(Mesh);
fill_verts.SelectInteriorVertices(tris);
FillVertices = fill_verts.ToArray();
return(true);
}
public static void test_read_thingi10k()
{
//const string THINGIROOT = "D:\\meshes\\Thingi10K\\raw_meshes\\";
const string THINGIROOT = "F:\\Thingi10K\\raw_meshes\\";
string[] files = Directory.GetFiles(THINGIROOT);
SafeListBuilder <string> failures = new SafeListBuilder <string>();
SafeListBuilder <string> empty = new SafeListBuilder <string>();
SafeListBuilder <string> closed = new SafeListBuilder <string>();
SafeListBuilder <string> open = new SafeListBuilder <string>();
SafeListBuilder <string> boundaries_failed = new SafeListBuilder <string>();
int k = 0;
gParallel.ForEach(files, (filename) => {
int i = k;
Interlocked.Increment(ref k);
System.Console.WriteLine("{0} : {1}", i, filename);
DMesh3Builder builder = new DMesh3Builder();
StandardMeshReader reader = new StandardMeshReader()
{
MeshBuilder = builder
};
IOReadResult result = reader.Read(filename, ReadOptions.Defaults);
if (result.code != IOCode.Ok)
{
System.Console.WriteLine("{0} FAILED!", filename);
failures.SafeAdd(filename);
return;
}
bool is_open = false;
bool loops_failed = false;
bool is_empty = true;
foreach (DMesh3 mesh in builder.Meshes)
{
if (mesh.TriangleCount > 0)
{
is_empty = false;
}
if (mesh.IsClosed() == false)
{
is_open = true;
try {
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh, false)
{
SpanBehavior = MeshBoundaryLoops.SpanBehaviors.ThrowException,
FailureBehavior = MeshBoundaryLoops.FailureBehaviors.ThrowException
};
loops.Compute();
} catch {
loops_failed = true;
}
}
}
if (is_empty)
{
empty.SafeAdd(filename);
}
else if (is_open)
{
open.SafeAdd(filename);
if (loops_failed)
{
boundaries_failed.SafeAdd(filename);
}
}
else
{
closed.SafeAdd(filename);
}
});
foreach (string failure in failures.Result)
{
System.Console.WriteLine("FAIL: {0}", failure);
}
TestUtil.WriteTestOutputStrings(empty.List.ToArray(), "thingi10k_empty.txt");
TestUtil.WriteTestOutputStrings(closed.List.ToArray(), "thingi10k_closed.txt");
TestUtil.WriteTestOutputStrings(open.List.ToArray(), "thingi10k_open.txt");
TestUtil.WriteTestOutputStrings(boundaries_failed.List.ToArray(), "thingi10k_boundaries_failed.txt");
}
public virtual bool Apply()
{
DMesh3 testAgainstMesh = Mesh;
if (InsideMode == CalculationMode.RayParity)
{
MeshBoundaryLoops loops = new MeshBoundaryLoops(testAgainstMesh);
if (loops.Count > 0)
{
testAgainstMesh = new DMesh3(Mesh);
foreach (var loop in loops)
{
if (Cancelled())
{
return(false);
}
SimpleHoleFiller filler = new SimpleHoleFiller(testAgainstMesh, loop);
filler.Fill();
}
}
}
DMeshAABBTree3 spatial = (Spatial != null && testAgainstMesh == Mesh) ?
Spatial : new DMeshAABBTree3(testAgainstMesh, true);
if (InsideMode == CalculationMode.AnalyticWindingNumber)
{
spatial.WindingNumber(Vector3d.Zero);
}
else if (InsideMode == CalculationMode.FastWindingNumber)
{
spatial.FastWindingNumber(Vector3d.Zero);
}
if (Cancelled())
{
return(false);
}
// ray directions
List <Vector3d> ray_dirs = null; int NR = 0;
if (InsideMode == CalculationMode.SimpleOcclusionTest)
{
ray_dirs = new List <Vector3d>();
ray_dirs.Add(Vector3d.AxisX); ray_dirs.Add(-Vector3d.AxisX);
ray_dirs.Add(Vector3d.AxisY); ray_dirs.Add(-Vector3d.AxisY);
ray_dirs.Add(Vector3d.AxisZ); ray_dirs.Add(-Vector3d.AxisZ);
NR = ray_dirs.Count;
}
Func <Vector3d, bool> isOccludedF = (pt) => {
if (InsideMode == CalculationMode.RayParity)
{
return(spatial.IsInside(pt));
}
else if (InsideMode == CalculationMode.AnalyticWindingNumber)
{
return(spatial.WindingNumber(pt) > WindingIsoValue);
}
else if (InsideMode == CalculationMode.FastWindingNumber)
{
return(spatial.FastWindingNumber(pt) > WindingIsoValue);
}
else
{
for (int k = 0; k < NR; ++k)
{
int hit_tid = spatial.FindNearestHitTriangle(new Ray3d(pt, ray_dirs[k]));
if (hit_tid == DMesh3.InvalidID)
{
return(false);
}
}
return(true);
}
};
bool cancel = false;
BitArray vertices = null;
if (PerVertex)
{
vertices = new BitArray(Mesh.MaxVertexID);
MeshNormals normals = null;
if (Mesh.HasVertexNormals == false)
{
normals = new MeshNormals(Mesh);
normals.Compute();
}
gParallel.ForEach(Mesh.VertexIndices(), (vid) => {
if (cancel)
{
return;
}
if (vid % 10 == 0)
{
cancel = Cancelled();
}
Vector3d c = Mesh.GetVertex(vid);
Vector3d n = (normals == null) ? Mesh.GetVertexNormal(vid) : normals[vid];
c += n * NormalOffset;
vertices[vid] = isOccludedF(c);
});
}
if (Cancelled())
{
return(false);
}
RemovedT = new List <int>();
SpinLock removeLock = new SpinLock();
gParallel.ForEach(Mesh.TriangleIndices(), (tid) => {
if (cancel)
{
return;
}
if (tid % 10 == 0)
{
cancel = Cancelled();
}
bool inside = false;
if (PerVertex)
{
Index3i tri = Mesh.GetTriangle(tid);
inside = vertices[tri.a] || vertices[tri.b] || vertices[tri.c];
}
else
{
Vector3d c = Mesh.GetTriCentroid(tid);
Vector3d n = Mesh.GetTriNormal(tid);
c += n * NormalOffset;
inside = isOccludedF(c);
}
if (inside)
{
bool taken = false;
removeLock.Enter(ref taken);
RemovedT.Add(tid);
removeLock.Exit();
}
});
if (Cancelled())
{
return(false);
}
if (RemovedT.Count > 0)
{
MeshEditor editor = new MeshEditor(Mesh);
bool bOK = editor.RemoveTriangles(RemovedT, true);
RemoveFailed = (bOK == false);
}
return(true);
}
public static void test_tube_generator()
{
Polygon2d circle_path = Polygon2d.MakeCircle(50, 64);
PolyLine2d arc_path = new PolyLine2d(circle_path.Vertices.Take(circle_path.VertexCount / 2));
Polygon2d irreg_path = new Polygon2d();
for (int k = 0; k < circle_path.VertexCount; ++k)
{
irreg_path.AppendVertex(circle_path[k]);
k += k / 2;
}
PolyLine2d irreg_arc_path = new PolyLine2d(irreg_path.Vertices.Take(circle_path.VertexCount - 1));
Polygon2d square_profile = Polygon2d.MakeCircle(7, 32);
square_profile.Translate(4 * Vector2d.One);
//square_profile[0] = 20 * square_profile[0].Normalized;
bool no_shared = true;
WriteGeneratedMesh(
new TubeGenerator(circle_path, Frame3f.Identity, square_profile)
{
WantUVs = true, NoSharedVertices = no_shared
},
"tubegen_loop_standarduv.obj");
WriteGeneratedMesh(
new TubeGenerator(irreg_path, Frame3f.Identity, square_profile)
{
WantUVs = true, NoSharedVertices = no_shared
},
"tubegen_irregloop_standarduv.obj");
WriteGeneratedMesh(
new TubeGenerator(arc_path, Frame3f.Identity, square_profile)
{
WantUVs = true, NoSharedVertices = no_shared
},
"tubegen_arc_standarduv.obj");
WriteGeneratedMesh(
new TubeGenerator(irreg_arc_path, Frame3f.Identity, square_profile)
{
WantUVs = true, NoSharedVertices = no_shared
},
"tubegen_irregarc_standarduv.obj");
// append tube border around each hole of input mesh
DMesh3 inMesh = TestUtil.LoadTestInputMesh("n_holed_bunny.obj");
Polygon2d bdrycirc = Polygon2d.MakeCircle(0.25, 6);
MeshBoundaryLoops loops = new MeshBoundaryLoops(inMesh);
foreach (EdgeLoop loop in loops)
{
DCurve3 curve = loop.ToCurve().ResampleSharpTurns();
TubeGenerator gen = new TubeGenerator(curve, bdrycirc)
{
NoSharedVertices = false
};
MeshEditor.Append(inMesh, gen.Generate().MakeDMesh());
}
TestUtil.WriteTestOutputMesh(inMesh, "boundary_tubes.obj");
}
public static void test_marching_cubes_topology()
{
AxisAlignedBox3d bounds = new AxisAlignedBox3d(1.0);
int numcells = 64;
double cellsize = bounds.MaxDim / numcells;
Random r = new Random(31337);
for (int ii = 0; ii < 100; ++ii)
{
DenseGrid3f grid = new DenseGrid3f();
grid.resize(numcells, numcells, numcells);
grid.assign(1);
for (int k = 2; k < numcells - 3; k++)
{
for (int j = 2; j < numcells - 3; j++)
{
for (int i = 2; i < numcells - 3; i++)
{
double d = r.NextDouble();
if (d > 0.9)
{
grid[i, j, k] = 0.0f;
}
else if (d > 0.5)
{
grid[i, j, k] = 1.0f;
}
else
{
grid[i, j, k] = -1.0f;
}
}
}
}
var iso = new DenseGridTrilinearImplicit(grid, Vector3f.Zero, cellsize);
MarchingCubes c = new MarchingCubes();
c.Implicit = iso;
c.Bounds = bounds;
//c.Bounds.Max += 3 * cellsize * Vector3d.One;
//c.Bounds.Expand(2*cellsize);
// this produces holes
c.CubeSize = cellsize * 4.1;
//c.CubeSize = cellsize * 2;
//c.Bounds = new AxisAlignedBox3d(2.0);
c.Generate();
for (float f = 2.0f; f < 8.0f; f += 0.13107f)
{
c.CubeSize = cellsize * 4.1;
c.Generate();
c.Mesh.CheckValidity(false);
MeshBoundaryLoops loops = new MeshBoundaryLoops(c.Mesh);
if (loops.Count > 0)
{
throw new Exception("found loops!");
}
}
}
//c.Mesh.CheckValidity(false);
//TestUtil.WriteTestOutputMesh(c.Mesh, "marching_cubes_topotest.obj");
}
public override DMesh3 Cut(CuttingInfo info)
{
var painted = FindPaintedTriangles(info.mesh, info.data.ColorNum);
if (painted.Count <= 0)
{
return(info.mesh);
}
var components = FindConnectedComponents(info, painted);
var subMeshes = new List <DMesh3>();
foreach (var component in components.Components)
{
DSubmesh3 subMesh = new DSubmesh3(info.mesh, component.Indices);
var newMesh = subMesh.SubMesh;
newMesh.EnableTriangleGroups();
newMesh.EnableVertexColors(ColorManager.Instance.GetColorForId(info.data.ColorNum).toVector3f());
foreach (var componentIndex in component.Indices)
{
info.mesh.RemoveTriangle(componentIndex);
}
var loops = new MeshBoundaryLoops(newMesh, true);
var meshEditorNewMesh = new MeshEditor(newMesh);
var meshEditorOldMesh = new MeshEditor(info.mesh);
foreach (var meshBoundaryLoop in loops)
{
var offsettedVerticesNewMesh = new List <int>();
var offsettedVerticesOldMesh = new List <int>();
foreach (var vertex in meshBoundaryLoop.Vertices)
{
var normal = newMesh.GetVertexNormal(vertex);
var vertextPosition = newMesh.GetVertex(vertex);
var newVertex = newMesh.AppendVertex(vertextPosition - normal.toVector3d() * info.data.depth);
offsettedVerticesNewMesh.Add(newVertex);
var newVertexOldMesh =
info.mesh.AppendVertex(vertextPosition - normal.toVector3d() * info.data.depth);
offsettedVerticesOldMesh.Add(newVertexOldMesh);
}
var boundaryLoopOfOldMesh = meshBoundaryLoop.Vertices
.Select(subv => subMesh.MapVertexToBaseMesh(subv)).ToArray();
var loopNewMesh = meshEditorNewMesh.StitchLoop(meshBoundaryLoop.Vertices,
offsettedVerticesNewMesh.ToArray(), info.data.ColorNum);
var loopOldMesh = meshEditorOldMesh.StitchLoop(boundaryLoopOfOldMesh,
offsettedVerticesOldMesh.ToArray(), info.data.mainColorId);
for (var index = 0; index < offsettedVerticesNewMesh.Count; index++)
{
info.PointToPoint.Add(offsettedVerticesNewMesh[index], offsettedVerticesOldMesh[index]);
}
var offsettedLoop = EdgeLoop.FromVertices(newMesh, offsettedVerticesNewMesh);
var holeFiller = new SimpleHoleFiller(newMesh, offsettedLoop);
var valid = holeFiller.Validate();
if (valid == ValidationStatus.Ok)
{
var res = holeFiller.Fill(info.data.ColorNum);
if (res)
{
var newVertex = holeFiller.NewVertex;
var newTriangles = holeFiller.NewTriangles;
//Add the same triangles to old mesh.
if (newVertex == -1) //case where it added only one tri
{
var vertices = newMesh.GetTriangle(newTriangles.First());
var edgeAOldMesh = info.PointToPoint[vertices.a];
var edgeBOldMesh = info.PointToPoint[vertices.b];
var edgeCOldMesh = info.PointToPoint[vertices.c];
info.mesh.AppendTriangle(edgeAOldMesh, edgeCOldMesh, edgeBOldMesh, info.data.mainColorId);
}
else //case where multiple tris and a middle vertex were added
{
var newVertexOldMesh = info.mesh.AppendVertex(newMesh.GetVertex(newVertex));
foreach (var newTriangle in newTriangles)
{
//the center is always the first vertex in newTriangle
var edgeVertices = newMesh.GetTriangle(newTriangle);
var edgeBOldMesh = info.PointToPoint[edgeVertices.b];
var edgeCOldMesh = info.PointToPoint[edgeVertices.c];
info.mesh.AppendTriangle(newVertexOldMesh, edgeCOldMesh, edgeBOldMesh,
info.data.mainColorId);
}
if (info.PointToPoint.ContainsKey(newVertex))
{
Debug.Log($"Double insertion from HF: {newVertex}, {newVertexOldMesh}");
}
else
{
info.PointToPoint.Add(newVertex, newVertexOldMesh);
}
}
}
}
}
subMeshes.Add(newMesh);
}
InstantiateNewObjects(info, subMeshes);
return(info.mesh);
}