public static MeshBuilder <VERTEX> GetBodyMeshBuilder(this IBody2 swBody2, MaterialBuilder docMaterial, bool improvedQuality = true)
{
var mesh = new MeshBuilder <VERTEX>();
var bodyMat = swBody2.GetMaterialBuilder() ?? docMaterial;
//网格化
var swTessellation = (Tessellation)swBody2.GetTessellation(null);
{
swTessellation.NeedFaceFacetMap = true;
swTessellation.NeedVertexParams = true;
swTessellation.NeedVertexNormal = true;
swTessellation.ImprovedQuality = improvedQuality;
// How to handle matches across common edges
swTessellation.MatchType = (int)swTesselationMatchType_e.swTesselationMatchFacetTopology;
// Do it
bool bResult = swTessellation.Tessellate();
}
var face = (Face2)swBody2.GetFirstFace();
while ((face != null))
{
var faceMaterial = face.GetMaterialBuilder();
var prim = mesh.UsePrimitive(faceMaterial ?? bodyMat);
int[] vFacetId = (int[])swTessellation.GetFaceFacets(face);
//Should always be three fins per facet
for (int i = 0; i < vFacetId.Length; i++)
{
int[] vFinId = (int[])swTessellation.GetFacetFins(vFacetId[i]);
List <VERTEX> points = new List <VERTEX>();
for (int j = 0; j < 3; j++)
{
int[] vVertexId = (int[])swTessellation.GetFinVertices(vFinId[j]);
//Should always be two vertices per fin
double[] vVertex1 = (double[])swTessellation.GetVertexPoint(vVertexId[0]);
double[] vVertex2 = (double[])swTessellation.GetVertexPoint(vVertexId[1]);
points.Add(new VERTEX(
(float)vVertex1[0], (float)vVertex1[1], (float)vVertex1[2]
));
points.Add(new VERTEX(
(float)vVertex2[0], (float)vVertex2[1], (float)vVertex2[2]
));
}
prim.AddTriangle(points[0], points[2], points[4]);
}
face = (Face2)face.GetNextFace();
}
return(mesh);
}