public Vector3 CenterAndSnapPlanes(ref ChiselSurfaceDefinition surfaceDefinition)
{
Profiler.BeginSample("CenterAndSnapPlanes");
/*
* for (int p = 0; p < polygons.Length; p++)
* {
* var plane = planes[p];
* var edgeFirst = polygons[p].firstEdge;
* var edgeLast = edgeFirst + polygons[p].edgeCount;
* for (int e = edgeFirst; e < edgeLast; e++)
* {
* var vertexIndex = halfEdges[e].vertexIndex;
* vertices[vertexIndex] = (float3)MathExtensions.ProjectPointPlane(vertices[vertexIndex], plane);
* }
* }
*/
var dmin = (double3)vertices[0];
var dmax = dmin;
for (int i = 1; i < vertices.Length; i++)
{
dmin = math.min(dmin, vertices[i]);
dmax = math.max(dmax, vertices[i]);
}
var center = (float3)((dmin + dmax) * 0.5);
var translate = float4x4.Translate(center);
for (int i = 0; i < polygons.Length; i++)
{
ref var surface = ref surfaceDefinition.surfaces[i];
var localSpaceToPlaneSpace = MathExtensions.GenerateLocalToPlaneSpaceMatrix(planes[i]);
var originalUVMatrix = surface.surfaceDescription.UV0.ToFloat4x4();
planes[i].w += math.dot(planes[i].xyz, center);
var translatedPlaneSpaceToLocalSpace = math.inverse(MathExtensions.GenerateLocalToPlaneSpaceMatrix(planes[i]));
var newUVMatrix = math.mul(math.mul(math.mul(
originalUVMatrix,
localSpaceToPlaneSpace),
translate),
translatedPlaneSpaceToLocalSpace);
surface.surfaceDescription.UV0 = new UVMatrix(newUVMatrix);
}
internal static void GenerateSurfaceRenderBuffers(int brushNodeID, LoopList loopList)
{
var output = CSGManager.GetBrushOutput(brushNodeID);
var brushInstance = CSGManager.GetBrushMeshID(brushNodeID);
var mesh = BrushMeshManager.GetBrushMesh(brushInstance);
var meshPolygons = mesh.polygons;
var meshSurfaces = mesh.surfaces;
Matrix4x4 worldToLocal = Matrix4x4.identity;
CSGManager.GetTreeToNodeSpaceMatrix(brushNodeID, out worldToLocal);
var outputSurfaces = new CSGSurfaceRenderBuffer[loopList.loops.Count]; // TODO: should be same size as brush.surfaces.Length
int outputSurfaceCount = 0;
foreach (var loop in loopList.loops)
{
var polygonIndex = loop.basePlaneIndex; // TODO: fix this
var meshPolygon = meshPolygons[polygonIndex];
var surfaceIndex = meshPolygon.surfaceID; // TODO: fix this
var localSpaceToPlaneSpace = MathExtensions.GenerateLocalToPlaneSpaceMatrix(meshSurfaces[surfaceIndex].plane);
var uv0Matrix = meshPolygon.description.UV0.ToMatrix() * (localSpaceToPlaneSpace * worldToLocal);
// TODO: all separate loops on same surface should be put in same OutputSurfaceMesh
if (!loop.Triangulate(uv0Matrix, ref outputSurfaces[outputSurfaceCount]))
{
continue;
}
// TODO: make this work
// outputSurfaces[outputSurfaceCount].meshQuery = loop.layers; //???
// outputSurfaces[outputSurfaceCount].surfaceParameter = loop.surfaceParameter; //???
outputSurfaces[outputSurfaceCount].surfaceIndex = surfaceIndex;
outputSurfaceCount++;
}
if (outputSurfaceCount != loopList.loops.Count)
{
Array.Resize(ref outputSurfaces, outputSurfaceCount);
}
output.renderBuffers.surfaceRenderBuffers.AddRange(outputSurfaces);
}
