public Mesh ExtrudeAlong(BezierSpline spline, Vector3 down)
{
MeshBuilder meshBuilder = new MeshBuilder();
meshBuilder.BeforeNext(Matrix4x4.identity, new Vector3());
Vector3 lastTangent = spline.GetFirstDerivative(0, spline.pts[0]);
Quaternion quat = Quaternion.LookRotation(lastTangent, -down);
Vector3 up = down;
Vertex[] lastVerts = null;
for(int i = 0; i < spline.pts.Length; i ++)
{
BezierSpline.BezierPoint pt = spline.pts[i];
if (Vector3.Distance(pt.startPos, pt.endPos) > 0.001f)
{
int subdivisions = pt.numSubdivisions;
for (int div = 0; div <= subdivisions; div++)
{
float t = div / (float)pt.numSubdivisions;
Vector3 ptT = spline.GetPoint(t, pt);
Vector3 tangent = spline.GetFirstDerivative(t, pt).normalized;
quat = Quaternion.FromToRotation(lastTangent, tangent) * quat;
lastVerts = BuildNextSection(meshBuilder, ptT, tangent, quat, lastVerts);
lastTangent = tangent;
}
}
}
AddCap(meshBuilder, new Vector3[] { lastVerts[0].position, lastVerts[2].position, lastVerts[4].position, lastVerts[6].position }, true);
return meshBuilder.DoneCreateMesh();
}
public void Build(Vector3 pos, AdjacencyMatrix adjacencyMatrix, MeshBlock block, MeshBuilder meshBuilder, BlockBounds clipBounds)
{
Quaternion rot = block.RotationQuat;
Matrix4x4 transform = Matrix4x4.TRS(pos + new Vector3(0.5f, 0.5f, 0.5f), rot, new Vector3(1, 1, 1));
BlockBounds localClipBounds = new BlockBounds (clipBounds.Position - block.OriginalBounds.Position - pos, clipBounds.Size);
localClipBounds.SetToRotationFrom (Quaternion.Inverse(block.RotationQuat), new Vector3(0.5f, 0.5f, 0.5f));
meshBuilder.BeforeNext (transform, new Vector3(-0.5f, -0.5f, -0.5f), localClipBounds);
foreach (Part part in _blockParts)
{
if ((part.Direction == null) || (!adjacencyMatrix.RPt(part.Direction[0], part.Direction[1], part.Direction[2]).Occluded))
{
IProcMeshGenerator meshGenerator;
if(!_meshGenerators.TryGetValue(part.MeshGenerator, out meshGenerator)){
_meshGenerators[part.MeshGenerator] = (meshGenerator = (IProcMeshGenerator)Activator.CreateInstance(part.MeshGenerator));
}
meshGenerator.BuildMesh(part.PartType, adjacencyMatrix, meshBuilder, localClipBounds);
}
}
}