public DMesh3 remesh_constraints_fixedverts(int iterations, DMesh3 mesh, double min, double max, double angle)
{
AxisAlignedBox3d bounds = mesh.CachedBounds;
// construct mesh projection target
DMesh3 meshCopy = new DMesh3(mesh);
meshCopy.CheckValidity();
DMeshAABBTree3 tree = new DMeshAABBTree3(meshCopy);
tree.Build();
MeshProjectionTarget target = new MeshProjectionTarget()
{
Mesh = meshCopy, Spatial = tree
};
// construct constraint set
MeshConstraints cons = new MeshConstraints();
//EdgeRefineFlags useFlags = EdgeRefineFlags.NoFlip | EdgeRefineFlags.NoCollapse;
EdgeRefineFlags useFlags = EdgeRefineFlags.NoFlip;
foreach (int eid in mesh.EdgeIndices())
{
double fAngle = MeshUtil.OpeningAngleD(mesh, eid);
if (fAngle > angle)
{
cons.SetOrUpdateEdgeConstraint(eid, new EdgeConstraint(useFlags));
Index2i ev = mesh.GetEdgeV(eid);
int nSetID0 = (mesh.GetVertex(ev[0]).y > bounds.Center.y) ? 1 : 2;
int nSetID1 = (mesh.GetVertex(ev[1]).y > bounds.Center.y) ? 1 : 2;
cons.SetOrUpdateVertexConstraint(ev[0], new VertexConstraint(true, nSetID0));
cons.SetOrUpdateVertexConstraint(ev[1], new VertexConstraint(true, nSetID1));
}
}
Remesher r = new Remesher(mesh);
r.Precompute();
r.SetExternalConstraints(cons);
r.SetProjectionTarget(target);
r.EnableFlips = r.EnableSplits = r.EnableCollapses = true;
r.MinEdgeLength = min;
r.MaxEdgeLength = max;
r.EnableSmoothing = true;
r.SmoothSpeedT = 1;
for (int k = 0; k < iterations; ++k)
{
r.BasicRemeshPass();
mesh.CheckValidity();
}
return(mesh);
}
public DMesh3 remesh_constraints_vertcurves(int iterations, DMesh3 mesh, double min, double max, double angle)
{
mesh.CheckValidity();
AxisAlignedBox3d bounds = mesh.CachedBounds;
// construct mesh projection target
DMesh3 meshCopy = new DMesh3(mesh);
meshCopy.CheckValidity();
DMeshAABBTree3 tree = new DMeshAABBTree3(meshCopy);
tree.Build();
MeshProjectionTarget mesh_target = new MeshProjectionTarget()
{
Mesh = meshCopy,
Spatial = tree
};
// cylinder projection target
CylinderProjectionTarget cyl_target = new CylinderProjectionTarget()
{
Cylinder = new Cylinder3d(new Vector3D(0, 1, 0), Vector3D.AxisY, 1, 2)
};
//IProjectionTarget target = mesh_target;
IProjectionTarget target = cyl_target;
// construct projection target circles
CircleProjectionTarget bottomCons = new CircleProjectionTarget()
{
Circle = new Circle3d(bounds.Center, 1.0)
};
bottomCons.Circle.Center.y = bounds.Min.y;
CircleProjectionTarget topCons = new CircleProjectionTarget()
{
Circle = new Circle3d(bounds.Center, 1.0)
};
topCons.Circle.Center.y = bounds.Max.y;
// construct constraint set
MeshConstraints cons = new MeshConstraints();
//EdgeRefineFlags useFlags = EdgeRefineFlags.NoFlip | EdgeRefineFlags.NoCollapse;
EdgeRefineFlags useFlags = EdgeRefineFlags.NoFlip;
bool bConstrainVertices = true;
foreach (int eid in mesh.EdgeIndices())
{
double fAngle = MeshUtil.OpeningAngleD(mesh, eid);
if (fAngle > 30.0f)
{
Index2i ev = mesh.GetEdgeV(eid);
Vector3D ev0 = mesh.GetVertex(ev[0]);
Vector3D ev1 = mesh.GetVertex(ev[1]);
CircleProjectionTarget loopTarget = null;
if (ev0.y > bounds.Center.y && ev1.y > bounds.Center.y)
{
loopTarget = topCons;
}
else if (ev0.y < bounds.Center.y && ev1.y < bounds.Center.y)
{
loopTarget = bottomCons;
}
cons.SetOrUpdateEdgeConstraint(eid, new EdgeConstraint(useFlags, loopTarget));
if (bConstrainVertices && loopTarget != null)
{
cons.SetOrUpdateVertexConstraint(ev[0], new VertexConstraint(loopTarget));
cons.SetOrUpdateVertexConstraint(ev[1], new VertexConstraint(loopTarget));
}
}
}
Remesher r = new Remesher(mesh);
//r.SetExternalConstraints(cons);
r.SetProjectionTarget(target);
r.Precompute();
r.ENABLE_PROFILING = true;
r.EnableFlips = r.EnableSplits = r.EnableCollapses = true;
r.MinEdgeLength = min;
r.MaxEdgeLength = max;
r.EnableSmoothing = true;
r.SmoothSpeedT = 1.0f;
for (int k = 0; k < iterations; ++k)
{
r.BasicRemeshPass();
mesh.CheckValidity();
}
return(mesh);
}
