public Mesh BuildMeshFromConwayPoly(bool forceTwosided)
{
//var originalFaceSides = KisTriangulate();
var target = new Mesh();
var meshTriangles = new List <int>();
var meshVertices = new List <Vector3>();
var meshNormals = new List <Vector3>();
var meshColors = new List <Color32>();
var hasNaked = _conwayPoly.HasNaked();
hasNaked = false; // TODO
// for (int i = 0; i < conway.Faces.Count; i++)
// {
// if (conway.Faces[i].Sides > 3)
// {
// conway.Faces.Triangulate(i, false);
// }
// }
// Strip down to Face-Vertex structure
var points = _conwayPoly.ListVerticesByPoints();
var faceIndices = _conwayPoly.ListFacesByVertexIndices();
// Add faces
int index = 0;
for (var i = 0; i < faceIndices.Length; i++)
{
var faceIndex = faceIndices[i];
var face = _conwayPoly.Faces[i];
var faceNormal = face.Normal;
Color32 color;
switch (ColorMethod)
{
case AppearancePreset.ColorMethods.ByRole:
color = faceColors[(int)_conwayPoly.FaceRoles[i]];
break;
case AppearancePreset.ColorMethods.BySides:
color = faceColors[face.Sides % faceColors.Length];
break;
default:
color = Color.red;
break;
}
if (face.Sides > 3)
{
for (var edgeIndex = 0; edgeIndex < faceIndex.Count; edgeIndex++)
{
meshVertices.Add(face.Centroid);
meshTriangles.Add(index++);
meshVertices.Add(points[faceIndex[edgeIndex]]);
meshTriangles.Add(index++);
meshVertices.Add(points[faceIndex[(edgeIndex + 1) % face.Sides]]);
meshTriangles.Add(index++);
meshNormals.AddRange(Enumerable.Repeat(faceNormal, 3));
meshColors.AddRange(Enumerable.Repeat(color, 3));
}
}
else
{
meshVertices.Add(points[faceIndex[0]]);
meshTriangles.Add(index++);
meshVertices.Add(points[faceIndex[1]]);
meshTriangles.Add(index++);
meshVertices.Add(points[faceIndex[2]]);
meshTriangles.Add(index++);
meshNormals.AddRange(Enumerable.Repeat(faceNormal, 3));
meshColors.AddRange(Enumerable.Repeat(color, 3));
}
if (hasNaked || forceTwosided)
{
if (faceIndex.Count > 3)
{
for (var edgeIndex = 0; edgeIndex < faceIndex.Count; edgeIndex++)
{
meshVertices.Add(face.Centroid);
meshTriangles.Add(index++);
meshVertices.Add(points[faceIndex[(edgeIndex + 1) % face.Sides]]);
meshTriangles.Add(index++);
meshVertices.Add(points[faceIndex[edgeIndex]]);
meshTriangles.Add(index++);
meshNormals.AddRange(Enumerable.Repeat(faceNormal, 3));
meshColors.AddRange(Enumerable.Repeat(color, 3));
}
}
else
{
meshVertices.Add(points[faceIndex[0]]);
meshTriangles.Add(index++);
meshVertices.Add(points[faceIndex[2]]);
meshTriangles.Add(index++);
meshVertices.Add(points[faceIndex[1]]);
meshTriangles.Add(index++);
meshNormals.AddRange(Enumerable.Repeat(-faceNormal, faceIndex.Count));
meshColors.AddRange(Enumerable.Repeat(color, faceIndex.Count));
}
}
}
target.vertices = meshVertices.ToArray();
target.normals = meshNormals.ToArray();
target.triangles = meshTriangles.ToArray();
target.colors32 = meshColors.ToArray();
if (hasNaked || forceTwosided)
{
target.RecalculateNormals();
}
return(target);
}
