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);
Color boundaryColor = Color.Lerp(color1, color3, b);
Vector3 types;
types.x = (float)beginCell.TerrainType;
types.y = (float)leftCell.TerrainType;
types.z = (float)rightCell.TerrainType;
TriangulateBoundaryTriangle(
begin, color1, left, color2, boundary, boundaryColor, types
);
if (leftCell.GetEdgeType(rightCell) == HexEdgeType.Slope)
{
TriangulateBoundaryTriangle(
left, color2, right, color3, boundary, boundaryColor, types
);
}
else
{
terrain.AddTriangleUnPerturbed(HexMetrics.Perturb(left), HexMetrics.Perturb(right), boundary);
terrain.AddTriangleColor(color2, color3, boundaryColor);
terrain.AddTriangleTerrainTypes(types);
}
}
/// <summary>
/// Creates an additional quads and triangle to fill the space when a wall connects next to a cliff face so there is no gap.
/// </summary>
/// <param name="near"> Near vector3 point for wall </param>
/// <param name="far"> Far Vector 3 point for wall</param>
/// <param name="point"> vector 3 of cliff </param>
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.AddTriangleUnPerturbed(pointTop, v3, v4);
}