void TriangulateCornerTerracesCliff(Vector3 bottomVertex, Cell bottomCell, Vector3 leftVertex, Cell leftCell,
Vector3 rightVertex, Cell rightCell)
{
var terraceBindingVertex =
Vector3.Lerp(Metrics.Perturb(bottomVertex), Metrics.Perturb(rightVertex), 1f / Math.Abs(rightCell.Elevation - bottomCell.Elevation));
var terraceBindingColor = Color.Lerp(bottomCell.Color, rightCell.Color,
1f / Math.Abs(rightCell.Elevation - bottomCell.Elevation));
TriangulateBoundaryTriangle(bottomVertex, bottomCell, leftVertex, leftCell,
terraceBindingVertex, terraceBindingColor);
if (leftCell.GetEdgeType(rightCell) == HexagonEdgeType.Slope)
{
TriangulateBoundaryTriangle(leftVertex, leftCell, rightVertex, rightCell, terraceBindingVertex, terraceBindingColor);
}
else
{
terrain.AddTriangleUnperturbed(Metrics.Perturb(leftVertex), Metrics.Perturb(rightVertex), terraceBindingVertex);
terrain.AddTriangleColor(leftCell.Color, rightCell.Color, terraceBindingColor);
}
}
void AddWallWedge(Vector3 closeVertex, Vector3 farVertex, Vector3 point)
{
closeVertex = Metrics.Perturb(closeVertex);
farVertex = Metrics.Perturb(farVertex);
point = Metrics.Perturb(point);
var center = Metrics.WallLerp(closeVertex, farVertex);
var thickness = Metrics.WallThicknessOffset(closeVertex, farVertex);
Vector3 vertex3, vertex4;
var pointTop = point;
point.y = center.y;
var vertex1 = vertex3 = center - thickness;
var vertex2 = vertex4 = center + thickness;
vertex3.y = vertex4.y = pointTop.y = center.y + Metrics.WallHeight;
walls.AddQuadUnperturbed(vertex1, point, vertex3, pointTop);
walls.AddQuadUnperturbed(point, vertex2, pointTop, vertex4);
walls.AddTriangleUnperturbed(pointTop, vertex3, vertex4);
}