// Triangulate a corner with half terraces, half flat - Cliff on the right
void TriangulateCornerTerracesCliff(Vector3 begin, HexCell beginCell, Vector3 left, HexCell leftCell, Vector3 right, HexCell rightCell)
{
float b = 1f / (rightCell.Elevation - beginCell.Elevation);
if (b < 0)
{
b = -b;
}
Vector3 boundary = Vector3.Lerp(HexMetrics.Perturb(begin), HexMetrics.Perturb(right), b); // boundary is on a pertubed slope
Color boundaryColor = Color.Lerp(beginCell.Color, rightCell.Color, b);
TriangulateBoundaryTriangle(begin, beginCell, left, leftCell, boundary, boundaryColor);
if (leftCell.GetEdgeType(rightCell) == HexEdgeType.Slope)
{
TriangulateBoundaryTriangle(left, leftCell, right, rightCell, boundary, boundaryColor);
}
else
{
terrain.AddTriangleUnpertubed(HexMetrics.Perturb(left), HexMetrics.Perturb(right), boundary);
terrain.AddTriangleColor(leftCell.Color, rightCell.Color, boundaryColor);
}
}
void AddWallWedge(Vector3 near, Vector3 far, Vector3 point)
{
near = HexMetrics.Perturb(near);
far = HexMetrics.Perturb(far);
point = HexMetrics.Perturb(point);
Vector3 center = HexMetrics.WallLerp(near, far);
Vector3 thickness = HexMetrics.WallThicknessOffset(near, far);
Vector3 v1, v2, v3, v4;
Vector3 pointTop = point;
point.y = center.y;
v1 = v3 = center - thickness;
v2 = v4 = center + thickness;
v3.y = v4.y = pointTop.y = center.y + HexMetrics.wallHeight;
walls.AddQuadUnperturbed(v1, point, v3, pointTop);
walls.AddQuadUnperturbed(point, v2, pointTop, v4);
walls.AddTriangleUnpertubed(pointTop, v3, v4);
}