internal double CheckLocalCompactness(int vertId, double[] vNew)
{
var n1 = model.Neighbors(vertId);
var cMin = 1.0;
foreach (var faceId in n1)
{
if (!model.FaceIsValid(faceId))
{
continue;
}
var face = model.Face(faceId);
MxVector3[] fAfter = new MxVector3[3];
for (var i = 0; i < 3; i++)
{
fAfter[i] = (face[i] == vertId)
? new MxVector3(vNew)
: new MxVector3(model.Vertex(face[i]));
}
var c = MxGeom3d.TriangleCompactness(fAfter[0], fAfter[1], fAfter[2]);
if (c < cMin)
{
cMin = c;
}
}
return(cMin);
}
internal double CheckLocalInversion(int vertId, double[] vNew)
{
var nMin = 1.0;
var n1 = model.Neighbors(vertId);
foreach (var faceId in n1)
{
if (!model.FaceIsValid(faceId))
{
continue;
}
var face = model.Face(faceId);
var nml = new double[3];
model.ComputeFaceNormal(faceId, ref nml);
var nBefore = new MxVector3(nml);
var fAfter = new MxVector3[3];
for (var i = 0; i < 3; i++)
{
fAfter[i] = (face[i] == vertId)
? new MxVector3(vNew)
: new MxVector3(model.Vertex(face[i]));
}
var newNml = MxGeom3d.TriangleNormal(fAfter[0], fAfter[1], fAfter[2]);
var delta = nBefore * newNml;
if (delta < nMin)
{
nMin = delta;
}
}
return(nMin);
}
protected void CollectQuadrics()
{
foreach (var quad in quadrics)
{
quad.Clear();
}
for (var i = 0; i < model.FaceCount; i++)
{
var face = model.Face(i);
var vert0 = new MxVector3(model.Vertex(face[0]));
var vert1 = new MxVector3(model.Vertex(face[1]));
var vert2 = new MxVector3(model.Vertex(face[2]));
var plane = (WeightingPolicy == MxWeighting.RawNormals)
? MxGeom3d.TriangleRawPlane(vert0, vert1, vert2)
: MxGeom3d.TrianglePlane(vert0, vert1, vert2);
var quad = new MxQuadric3(plane[0], plane[1], plane[2], plane[3], model.ComputeFaceArea(i));
switch (WeightingPolicy)
{
case MxWeighting.Angle:
{
for (int j = 0; j < 3; j++)
{
var quadJ = new MxQuadric3(quad);
quadJ *= model.ComputeCornerAngle(i, j);
quadrics[face[j]] += quadJ;
}
break;
}
case MxWeighting.Area:
{
quad *= quad.Area;
quadrics[face[0]] += quad;
quadrics[face[1]] += quad;
quadrics[face[2]] += quad;
break;
}
case MxWeighting.AreaAverage:
{
quad *= quad.Area;
quadrics[face[0]] += quad;
quadrics[face[1]] += quad;
quadrics[face[2]] += quad;
break;
}
default:
{
quadrics[face[0]] += quad;
quadrics[face[1]] += quad;
quadrics[face[2]] += quad;
break;
}
}
}
}
