private void TriangulateCornerTerraces(
Vector3 begin, VoronoiCell beginCell,
Vector3 left, VoronoiCell leftCell,
Vector3 right, VoronoiCell rightCell)
{
Vector3 v3 = VoronoiMetrics.TerraceLerp(begin, left, 1);
Vector3 v4 = VoronoiMetrics.TerraceLerp(begin, right, 1);
Color c3 = VoronoiMetrics.TerraceLerp(beginCell.Color, leftCell.Color, 1);
Color c4 = VoronoiMetrics.TerraceLerp(beginCell.Color, rightCell.Color, 1);
Terrain.AddTriangle(begin, v3, v4);
Terrain.AddTriangleColor(beginCell.Color, c3, c4);
for (int i = 2; i < VoronoiMetrics.TerraceSteps; ++i)
{
Vector3 v1 = v3;
Vector3 v2 = v4;
Color c1 = c3;
Color c2 = c4;
v3 = VoronoiMetrics.TerraceLerp(begin, left, i);
v4 = VoronoiMetrics.TerraceLerp(begin, right, i);
c3 = VoronoiMetrics.TerraceLerp(beginCell.Color, leftCell.Color, i);
c4 = VoronoiMetrics.TerraceLerp(beginCell.Color, rightCell.Color, i);
Terrain.AddQuad(v1, v2, v3, v4);
Terrain.AddQuadColor(c1, c2, c3, c4);
}
Terrain.AddQuad(v3, v4, left, right);
Terrain.AddQuadColor(c3, c4, leftCell.Color, rightCell.Color);
}
public static EdgeVertices TerraceLerp(EdgeVertices a, EdgeVertices b, int step)
{
EdgeVertices result;
result.V1 = VoronoiMetrics.TerraceLerp(a.V1, b.V1, step);
result.V2 = VoronoiMetrics.TerraceLerp(a.V2, b.V2, step);
result.V3 = VoronoiMetrics.TerraceLerp(a.V3, b.V3, step);
result.V4 = VoronoiMetrics.TerraceLerp(a.V4, b.V4, step);
result.V5 = VoronoiMetrics.TerraceLerp(a.V5, b.V5, step);
return(result);
}
private void TriangulateEdgeTerraces(
EdgeVertices begin, VoronoiCell beginCell,
EdgeVertices end, VoronoiCell endCell, bool hasRoad)
{
EdgeVertices e2 = EdgeVertices.TerraceLerp(begin, end, 1);
Color c2 = VoronoiMetrics.TerraceLerp(beginCell.Color, endCell.Color, 1);
TriangulateEdgeStrip(begin, beginCell.Color, e2, c2, hasRoad);
for (int i = 2; i < VoronoiMetrics.TerraceSteps; ++i)
{
EdgeVertices e1 = e2;
Color c1 = c2;
e2 = EdgeVertices.TerraceLerp(begin, end, i);
c2 = VoronoiMetrics.TerraceLerp(beginCell.Color, endCell.Color, i);
TriangulateEdgeStrip(e1, c1, e2, c2, hasRoad);
}
TriangulateEdgeStrip(e2, c2, end, endCell.Color, hasRoad);
}
private void TriangulateBoundaryTriangle(
Vector3 begin, VoronoiCell beginCell,
Vector3 left, VoronoiCell leftCell,
Vector3 boundary, Color boundaryColor)
{
Vector3 v2 = VoronoiMetrics.Perturb(VoronoiMetrics.TerraceLerp(begin, left, 1));
Color c2 = VoronoiMetrics.TerraceLerp(beginCell.Color, leftCell.Color, 1);
Terrain.AddTriangleUnperturbed(VoronoiMetrics.Perturb(begin), v2, boundary);
Terrain.AddTriangleColor(beginCell.Color, c2, boundaryColor);
for (int i = 2; i < VoronoiMetrics.TerraceSteps; ++i)
{
Vector3 v1 = v2;
Color c1 = c2;
v2 = VoronoiMetrics.Perturb(VoronoiMetrics.TerraceLerp(begin, left, i));
c2 = VoronoiMetrics.TerraceLerp(beginCell.Color, leftCell.Color, i);
Terrain.AddTriangleUnperturbed(v1, v2, boundary);
Terrain.AddTriangleColor(c1, c2, boundaryColor);
}
Terrain.AddTriangleUnperturbed(v2, VoronoiMetrics.Perturb(left), boundary);
Terrain.AddTriangleColor(c2, leftCell.Color, boundaryColor);
}
