private MeshmerizerMesh GenerateMeshmerizerMesh(Primitive prim)
{
PrimitiveBaseShape primShape = new PrimitiveBaseShape(prim);
MeshmerizerMesh mesh = new MeshmerizerMesh();
float pathShearX = primShape.PathShearX < 128 ? (float)primShape.PathShearX * 0.01f : (float)(primShape.PathShearX - 256) * 0.01f;
float pathShearY = primShape.PathShearY < 128 ? (float)primShape.PathShearY * 0.01f : (float)(primShape.PathShearY - 256) * 0.01f;
float pathBegin = (float)primShape.PathBegin * 2.0e-5f;
float pathEnd = 1.0f - (float)primShape.PathEnd * 2.0e-5f;
float pathScaleX = (float)(primShape.PathScaleX - 100) * 0.01f;
float pathScaleY = (float)(primShape.PathScaleY - 100) * 0.01f;
float profileBegin = (float)primShape.ProfileBegin * 2.0e-5f;
float profileEnd = 1.0f - (float)primShape.ProfileEnd * 2.0e-5f;
float profileHollow = (float)primShape.ProfileHollow * 2.0e-5f;
int sides = 4;
if ((primShape.ProfileCurve & 0x07) == (byte)ProfileShape.EquilateralTriangle)
sides = 3;
else if ((primShape.ProfileCurve & 0x07) == (byte)ProfileShape.Circle)
sides = 24;
else if ((primShape.ProfileCurve & 0x07) == (byte)ProfileShape.HalfCircle)
{
// half circle, prim is a sphere
sides = 24;
profileBegin = 0.5f * profileBegin + 0.5f;
profileEnd = 0.5f * profileEnd + 0.5f;
}
int hollowSides = sides;
if (primShape.HollowShape == HollowShape.Circle)
hollowSides = 24;
else if (primShape.HollowShape == HollowShape.Square)
hollowSides = 4;
else if (primShape.HollowShape == HollowShape.Triangle)
hollowSides = 3;
PrimMesh primMesh = new PrimMesh(sides, profileBegin, profileEnd, profileHollow, hollowSides);
primMesh.topShearX = pathShearX;
primMesh.topShearY = pathShearY;
primMesh.pathCutBegin = pathBegin;
primMesh.pathCutEnd = pathEnd;
if (primShape.PathCurve == (byte)Extrusion.Straight)
{
primMesh.twistBegin = primShape.PathTwistBegin * 18 / 10;
primMesh.twistEnd = primShape.PathTwist * 18 / 10;
primMesh.taperX = pathScaleX;
primMesh.taperY = pathScaleY;
try
{
primMesh.ExtrudeLinear();
}
catch (Exception)
{
return null;
}
}
else
{
primMesh.holeSizeX = (200 - primShape.PathScaleX) * 0.01f;
primMesh.holeSizeY = (200 - primShape.PathScaleY) * 0.01f;
primMesh.radius = 0.01f * primShape.PathRadiusOffset;
primMesh.revolutions = 1.0f + 0.015f * primShape.PathRevolutions;
primMesh.skew = 0.01f * primShape.PathSkew;
primMesh.twistBegin = primShape.PathTwistBegin * 36 / 10;
primMesh.twistEnd = primShape.PathTwist * 36 / 10;
primMesh.taperX = primShape.PathTaperX * 0.01f;
primMesh.taperY = primShape.PathTaperY * 0.01f;
try
{
primMesh.ExtrudeCircular();
}
catch (Exception)
{
return null;
}
}
int numCoords = primMesh.coords.Count;
//int numFaces = primMesh.faces.Count;
List<Coord> coords = primMesh.coords;
for (int i = 0; i < numCoords; i++)
{
Coord c = coords[i];
mesh.vertices.Add(new MeshmerizerVertex(c.X, c.Y, c.Z));
}
mesh.primMesh = primMesh;
// trim the vertex and triangle lists to free up memory
mesh.vertices.TrimExcess();
mesh.triangles.TrimExcess();
return mesh;
}