private void TriangulateCornerTerraces(Vector3 begin, HexCell beginCell, Vector3 left, HexCell leftCell, Vector3 right, HexCell rightCell)
{
var v3 = HexMetrics.TerraceLerp(begin, left, 1);
var v4 = HexMetrics.TerraceLerp(begin, right, 1);
var c3 = HexMetrics.TerraceLerp(beginCell.Color, leftCell.Color, 1);
var c4 = HexMetrics.TerraceLerp(beginCell.Color, rightCell.Color, 1);
AddTriangle(begin, v3, v4);
AddTriangleColor(beginCell.Color, c3, c4);
for (int i = 2; i < HexMetrics.terraceSteps; i++)
{
var v1 = v3;
var v2 = v4;
var c1 = c3;
var c2 = c4;
v3 = HexMetrics.TerraceLerp(begin, left, i);
v4 = HexMetrics.TerraceLerp(begin, right, i);
c3 = HexMetrics.TerraceLerp(beginCell.Color, leftCell.Color, i);
c4 = HexMetrics.TerraceLerp(beginCell.Color, rightCell.Color, i);
AddQuad(v1, v2, v3, v4);
AddQuadColor(c1, c2, c3, c4);
}
AddQuad(v3, v4, left, right);
AddQuadColor(c3, c4, leftCell.Color, rightCell.Color);
}
public static EdgeVertices TerraceLerp(
EdgeVertices a, EdgeVertices b, int step)
{
EdgeVertices result;
result.v1 = HexMetrics.TerraceLerp(a.v1, b.v1, step);
result.v2 = HexMetrics.TerraceLerp(a.v2, b.v2, step);
result.v3 = HexMetrics.TerraceLerp(a.v3, b.v3, step);
result.v4 = HexMetrics.TerraceLerp(a.v4, b.v4, step);
return(result);
}
private void TriangulateEdgeTerraces(EdgeVertices begin, HexCell beginCell, EdgeVertices end, HexCell endCell)
{
var e2 = EdgeVertices.TerraceLerp(begin, end, 1);
var c2 = HexMetrics.TerraceLerp(beginCell.Color, endCell.Color, 1);
TriangulateEdgeStrip(begin, beginCell.Color, e2, c2);
for (int i = 2; i < HexMetrics.terraceSteps; i++)
{
var e1 = e2;
var c1 = c2;
e2 = EdgeVertices.TerraceLerp(begin, end, i);
c2 = HexMetrics.TerraceLerp(beginCell.Color, endCell.Color, i);
TriangulateEdgeStrip(e1, c1, e2, c2);
}
TriangulateEdgeStrip(e2, c2, end, endCell.Color);
}
private void TriangulateBoundaryTriangle(Vector3 begin, HexCell beginCell, Vector3 left, HexCell leftCell, Vector3 boundary, Color boundaryColor)
{
var v2 = Perturb(HexMetrics.TerraceLerp(begin, left, 1));
var c2 = HexMetrics.TerraceLerp(beginCell.Color, leftCell.Color, 1);
AddTriangleUnperturbed(Perturb(begin), v2, boundary);
AddTriangleColor(beginCell.Color, c2, boundaryColor);
for (int i = 2; i < HexMetrics.terraceSteps; i++)
{
var v1 = v2;
var c1 = c2;
v2 = Perturb(HexMetrics.TerraceLerp(begin, left, i));
c2 = HexMetrics.TerraceLerp(beginCell.Color, leftCell.Color, i);
AddTriangleUnperturbed(v1, v2, boundary);
AddTriangleColor(c1, c2, boundaryColor);
}
AddTriangleUnperturbed(v2, Perturb(left), boundary);
AddTriangleColor(c2, leftCell.Color, boundaryColor);
}