internal static void test_MeshAutoRepair()
{
Console.Write("test_MeshAutoRepair...");
// b1 will has edges that are overlapping, but disconnected, it's the result of a merge
// I guess autorepair should weld it back
DMesh3 b1 = TestUtil.LoadTestInputMesh("NeedHealing.obj");
// b2 is the same mesh, but we weld it
var b2 = new DMesh3(b1, true);
MergeCoincidentEdges merg = new MergeCoincidentEdges(b2);
merg.Apply();
MeshAutoRepair autoRepair = new MeshAutoRepair(b1);
autoRepair.Apply();
var allOk =
b1.VertexCount == b2.VertexCount &&
b1.EdgeCount == b2.EdgeCount &&
b1.TriangleCount == b2.TriangleCount;
if (!allOk)
{
var outF = TestUtil.WriteTestOutputMesh(b1, "MeshOps_MeshAutoRepair.obj");
Console.WriteLine($"Error, shape written to: {outF}");
}
else
{
Console.WriteLine("Ok");
}
}
public static void basic_tests()
{
DMesh3 mesh = TestUtil.LoadTestInputMesh("three_edge_crack.obj");
MergeCoincidentEdges merge = new MergeCoincidentEdges(mesh);
merge.Apply();
Util.gDevAssert(mesh.BoundaryEdgeIndices().Count() == 0);
mesh.CheckValidity(true, FailMode.DebugAssert);
TestUtil.WriteTestOutputMesh(mesh, "three_edge_crack_merged.obj");
DMesh3 mesh2 = TestUtil.LoadTestInputMesh("crack_loop.obj");
MergeCoincidentEdges merge2 = new MergeCoincidentEdges(mesh2);
merge2.Apply();
Util.gDevAssert(mesh2.BoundaryEdgeIndices().Count() == 0);
mesh2.CheckValidity(true, FailMode.DebugAssert);
TestUtil.WriteTestOutputMesh(mesh2, "crack_loop_merged.obj");
DMesh3 mesh3 = TestUtil.LoadTestInputMesh("cracks_many.obj");
MergeCoincidentEdges merge3 = new MergeCoincidentEdges(mesh3);
merge3.Apply();
Util.gDevAssert(mesh3.BoundaryEdgeIndices().Count() == 0);
mesh3.CheckValidity(true, FailMode.DebugAssert);
TestUtil.WriteTestOutputMesh(mesh3, "cracks_many_merged.obj");
DMesh3 mesh4 = TestUtil.LoadTestInputMesh("cracks_duplicate_edge.obj");
MergeCoincidentEdges merge4 = new MergeCoincidentEdges(mesh4);
merge4.Apply();
Util.gDevAssert(mesh4.BoundaryEdgeIndices().Count() == 0);
mesh4.CheckValidity(true, FailMode.DebugAssert);
TestUtil.WriteTestOutputMesh(mesh4, "cracks_duplicate_edge_merged.obj");
}
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 hard_test()
{
//DMesh3 mesh = TestUtil.LoadTestInputMesh("three_edge_crack.obj");
DMesh3 mesh = TestUtil.LoadTestMesh("c:\\scratch\\VTX_Scan_removeocc.obj");
//MeshEditor editor = new MeshEditor(mesh);
//editor.DisconnectAllBowties(100);
mesh.CheckValidity(true, FailMode.DebugAssert);
MergeCoincidentEdges merge = new MergeCoincidentEdges(mesh);
merge.Apply();
mesh.CheckValidity(true, FailMode.DebugAssert);
TestUtil.WriteTestOutputMesh(mesh, "vtx_scan_merged.obj");
}
private bool RepairCracks(DMesh3 mesh, bool bUniqueOnly, double mergeDist)
{
try
{
var merge = new MergeCoincidentEdges(mesh)
{
OnlyUniquePairs = bUniqueOnly,
MergeDistance = mergeDist
};
return(merge.Apply());
}
catch (Exception /*e*/)
{
// ??
return(false);
}
}
public static void test_write_solids()
{
//string FORMAT = ".obj";
string FORMAT = ".g3mesh";
string WRITEPATH = "E:\\Thingi10K\\closed\\";
string[] files = File.ReadAllLines("E:\\Thingi10K\\current\\thingi10k_closed.txt");
SafeListBuilder <string> failures = new SafeListBuilder <string>();
if (!Directory.Exists(WRITEPATH))
{
Directory.CreateDirectory(WRITEPATH);
}
int k = 0;
gParallel.ForEach(files, (filename) => {
int i = k;
Interlocked.Increment(ref k);
if (i % 500 == 0)
{
System.Console.WriteLine("{0} : {1}", i, files.Length);
}
long start_ticks = DateTime.Now.Ticks;
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;
}
DMesh3 combineMesh = new DMesh3();
if (builder.Meshes.Count == 1)
{
combineMesh = builder.Meshes[0];
}
else
{
foreach (DMesh3 mesh in builder.Meshes)
{
MeshEditor.Append(combineMesh, mesh);
}
}
if (combineMesh.IsClosed() == false)
{
MergeCoincidentEdges closeCracks = new MergeCoincidentEdges(combineMesh);
closeCracks.Apply();
}
if (combineMesh.IsClosed() == false)
{
System.Console.WriteLine("NOT CLOSED: {0}", filename);
return;
}
string outPath = Path.Combine(WRITEPATH, Path.GetFileNameWithoutExtension(filename) + FORMAT);
StandardMeshWriter.WriteMesh(outPath, combineMesh, WriteOptions.Defaults);
});
}
public static void test_specific_file()
{
//string filename = "F:\\Thingi10K\\raw_meshes\\1423009.stl";
//string filename = "E:\\Thingi10K\\raw_meshes\\99944.stl";
string filename = "E:\\Thingi10K\\raw_meshes\\57356.stl";
System.Console.WriteLine("reading {0}", 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);
return;
}
System.Console.WriteLine("got {0} meshes", builder.Meshes.Count);
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;
}
TestUtil.WriteTestOutputMesh(mesh, "thingi10k_specific_file_in.obj");
if (mesh.IsClosed() == false)
{
MergeCoincidentEdges closeCracks = new MergeCoincidentEdges(mesh);
closeCracks.Apply();
}
if (mesh.IsClosed() == false)
{
is_open = true;
try {
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh, false)
{
SpanBehavior = MeshBoundaryLoops.SpanBehaviors.Compute,
FailureBehavior = MeshBoundaryLoops.FailureBehaviors.ConvertToOpenSpan
};
loops.Compute();
} catch (Exception e) {
System.Console.WriteLine("EXCEPTION: " + e.Message);
loops_failed = true;
}
}
System.Console.WriteLine("open: {0} loopsFailed: {1} empty: {2}", is_open, loops_failed, is_empty);
TestUtil.WriteTestOutputMesh(mesh, "thingi10k_specific_file_out.obj");
}
}
public static void test_repair_all()
{
//const string THINGIROOT = "D:\\meshes\\Thingi10K\\raw_meshes\\";
const string THINGIROOT = "E:\\Thingi10K\\raw_meshes\\";
string[] files = Directory.GetFiles(THINGIROOT);
//files = File.ReadAllLines("C:\\git\\geometry3SharpDemos\\geometry3Test\\test_output\\thingi10k_open.txt");
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>();
SafeListBuilder <string> boundaries_spans_failed = new SafeListBuilder <string>();
SafeListBuilder <string> slow = new SafeListBuilder <string>();
SafeListBuilder <string> veryslow = new SafeListBuilder <string>();
int k = 0;
int MAX_NUM_FILES = 10000;
gParallel.ForEach(files, (filename) => {
if (k > MAX_NUM_FILES)
{
return;
}
int i = k;
Interlocked.Increment(ref k);
System.Console.WriteLine("{0} : {1}", i, filename);
long start_ticks = DateTime.Now.Ticks;
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 loops_spans_failed = false;
bool is_empty = true;
foreach (DMesh3 mesh in builder.Meshes)
{
if (mesh.TriangleCount > 0)
{
is_empty = false;
}
if (mesh.IsClosed() == false)
{
MergeCoincidentEdges closeCracks = new MergeCoincidentEdges(mesh);
closeCracks.Apply();
}
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 (loops_failed)
{
try {
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh, false)
{
SpanBehavior = MeshBoundaryLoops.SpanBehaviors.Compute,
FailureBehavior = MeshBoundaryLoops.FailureBehaviors.ConvertToOpenSpan
};
loops.Compute();
} catch {
loops_spans_failed = true;
}
}
}
}
TimeSpan elapsed = new TimeSpan(DateTime.Now.Ticks - start_ticks);
if (elapsed.TotalSeconds > 60)
{
veryslow.SafeAdd(filename);
}
else if (elapsed.TotalSeconds > 10)
{
slow.SafeAdd(filename);
}
if (is_empty)
{
empty.SafeAdd(filename);
}
else if (is_open)
{
open.SafeAdd(filename);
if (loops_failed)
{
boundaries_failed.SafeAdd(filename);
}
if (loops_spans_failed)
{
boundaries_spans_failed.SafeAdd(filename);
}
}
else
{
closed.SafeAdd(filename);
}
});
foreach (string failure in failures.Result)
{
System.Console.WriteLine("FAIL: {0}", failure);
}
TestUtil.WriteTestOutputStrings(make_strings(failures), "thingi10k_failures.txt");
TestUtil.WriteTestOutputStrings(make_strings(empty), "thingi10k_empty.txt");
TestUtil.WriteTestOutputStrings(make_strings(closed), "thingi10k_closed.txt");
TestUtil.WriteTestOutputStrings(make_strings(open), "thingi10k_open.txt");
TestUtil.WriteTestOutputStrings(make_strings(boundaries_failed), "thingi10k_boundaries_failed.txt");
TestUtil.WriteTestOutputStrings(make_strings(boundaries_spans_failed), "thingi10k_boundaries_spans_failed.txt");
TestUtil.WriteTestOutputStrings(make_strings(slow), "thingi10k_slow.txt");
TestUtil.WriteTestOutputStrings(make_strings(veryslow), "thingi10k_veryslow.txt");
}
protected void merge_loops(DMesh3 mesh, EdgeLoop cutLoop, EdgeLoop connectorLoop, bool is_outer)
{
/*
* To join the loops, we are going to first make a circle, then snap both
* open loops to that circle. Then we sample a set of vertices on the circle
* and remesh the loops while also snapping them to the circle vertices.
* The result is two perfectly-matching edge loops.
*/
//AxisAlignedBox3d cutLoopBounds =
// BoundsUtil.Bounds(cutLoop.Vertices, (vid) => { return mesh.GetVertex(vid); });
AxisAlignedBox3d cutLoopBounds = cutLoop.GetBounds();
AxisAlignedBox3d connectorLoopBounds = connectorLoop.GetBounds();
Vector3d midPt = (cutLoopBounds.Center + connectorLoopBounds.Center) * 0.5;
double midY = midPt.y;
// this mess construcst the circle and the sampled version
Frame3f circFrame = new Frame3f(midPt);
Circle3d circ = new Circle3d(circFrame, connectorLoopBounds.Width * 0.5, 1);
DistPoint3Circle3 dist = new DistPoint3Circle3(Vector3d.Zero, circ);
DCurve3 sampled = new DCurve3();
double target_edge_len = TargetMeshEdgeLength;
int N = (int)(circ.ArcLength / target_edge_len);
for (int k = 0; k < N; ++k)
{
sampled.AppendVertex(circ.SampleT((double)k / (double)N));
}
MergeProjectionTarget circleTarget = new MergeProjectionTarget()
{
Mesh = mesh, CircleDist = dist, CircleLoop = sampled
};
EdgeLoop[] loops = new EdgeLoop[2] {
cutLoop, connectorLoop
};
EdgeLoop[] outputLoops = new EdgeLoop[2]; // loops after this remeshing/etc (but might be missing some verts/edges!)
for (int li = 0; li < 2; ++li)
{
EdgeLoop loop = loops[li];
// snap the loop verts onto the analytic circle
foreach (int vid in loop.Vertices)
{
Vector3d v = mesh.GetVertex(vid);
dist.Point = new Vector3d(v.x, midY, v.z);
mesh.SetVertex(vid, dist.Compute().CircleClosest);
}
if (DebugStep <= 5)
{
continue;
}
// remesh around the edge loop while we snap it to the sampled circle verts
EdgeLoopRemesher loopRemesh = new EdgeLoopRemesher(mesh, loop)
{
LocalSmoothingRings = 3
};
loopRemesh.EnableParallelProjection = false;
loopRemesh.SetProjectionTarget(circleTarget);
loopRemesh.SetTargetEdgeLength(TargetMeshEdgeLength);
loopRemesh.SmoothSpeedT = 0.5f;
for (int k = 0; k < 5; ++k)
{
loopRemesh.BasicRemeshPass();
}
loopRemesh.SmoothSpeedT = 0;
for (int k = 0; k < 2; ++k)
{
loopRemesh.BasicRemeshPass();
}
EdgeLoop newLoop = loopRemesh.OutputLoop;
outputLoops[li] = newLoop;
if (DebugStep <= 6)
{
continue;
}
// hard snap the loop vertices to the sampled circle verts
foreach (int vid in newLoop.Vertices)
{
Vector3d v = mesh.GetVertex(vid);
v = circleTarget.Project(v, vid);
mesh.SetVertex(vid, v);
}
// [TODO] we could re-order newLoop verts/edges to match the sampled verts order,
// then the pair of loops would be consistently ordered (currently no guarantee)
if (DebugStep <= 7)
{
continue;
}
// collapse any degenerate edges on loop (just in case)
// DANGER: if this actually happens, then outputLoops[li] has some invalid verts/edges!
foreach (int eid in newLoop.Edges)
{
if (mesh.IsEdge(eid))
{
Index2i ev = mesh.GetEdgeV(eid);
Vector3d a = mesh.GetVertex(ev.a), b = mesh.GetVertex(ev.b);
if (a.Distance(b) < TargetMeshEdgeLength * 0.001)
{
DMesh3.EdgeCollapseInfo collapse;
mesh.CollapseEdge(ev.a, ev.b, out collapse);
}
}
}
}
if (DebugStep <= 7)
{
return;
}
/*
* Ok now we want to merge the loops and make them nice
*/
// would be more efficient to find loops and stitch them...
MergeCoincidentEdges merge = new MergeCoincidentEdges(mesh);
merge.Apply();
// fill any fail-holes??
// remesh merge region
MeshVertexSelection remesh_roi_v = new MeshVertexSelection(mesh);
remesh_roi_v.Select(outputLoops[0].Vertices);
remesh_roi_v.Select(outputLoops[1].Vertices);
remesh_roi_v.ExpandToOneRingNeighbours(5);
MeshFaceSelection remesh_roi = new MeshFaceSelection(mesh, remesh_roi_v, 1);
remesh_roi.LocalOptimize(true, true);
IProjectionTarget projTarget = null;
if (is_outer)
{
projTarget = new NoPenetrationProjectionTarget()
{
Spatial = this.OuterOffsetMeshSpatial
};
}
else
{
projTarget = new NoPenetrationProjectionTarget()
{
Spatial = this.InnerOffsetMeshSpatial
};
}
RegionRemesher join_remesh =
RegionRemesher.QuickRemesh(mesh, remesh_roi.ToArray(), TargetMeshEdgeLength, 0.5, 5, projTarget);
if (DebugStep <= 8)
{
return;
}
if (false && is_outer)
{
Func <int, bool> filterF = (tid) => {
return(mesh.GetTriCentroid(tid).y > connectorLoopBounds.Max.y);
};
MeshFaceSelection tris = new MeshFaceSelection(mesh);
foreach (int tid in join_remesh.CurrentBaseTriangles)
{
if (filterF(tid))
{
tris.Select(tid);
}
}
tris.ExpandToOneRingNeighbours(5, filterF);
MeshVertexSelection verts = new MeshVertexSelection(mesh, tris);
MeshIterativeSmooth smooth = new MeshIterativeSmooth(mesh, verts.ToArray(), true);
smooth.Alpha = 1.0f;
smooth.Rounds = 25;
smooth.ProjectF = (v, n, vid) => { return(projTarget.Project(v)); };
smooth.Smooth();
}
// [RMS] this smooths too far. we basically only want to smooth 'up' from top of socket...
//LaplacianMeshSmoother.RegionSmooth(mesh, join_remesh.CurrentBaseTriangles, 1, 10);
// need to post-enforce thickness, which we aren't doing above - we could though
}