void TriangulateBoundaryTriangle(Vector3 begin, Color beginColor, Vector3 left, Color leftColor, Vector3 boundary, Color boundaryColor, Vector3 types)
{
Vector3 v2 = HexMetric.Perturb(HexMetric.TerraceLerp(begin, left, 1));
Color c2 = HexMetric.TerraceLerp(beginColor, leftColor, 1);
// first triangle
terrain.AddTriangleUnperturbed(HexMetric.Perturb(begin), v2, boundary);
terrain.AddTriangleColor(beginColor, c2, boundaryColor);
terrain.AddTriangleTerrainTypes(types);
//connect terrace with cliff
for (int i = 2; i < HexMetric.terraceSteps; i++)
{
Vector3 v1 = v2;
Color c1 = c2;
v2 = HexMetric.Perturb(HexMetric.TerraceLerp(begin, left, i));
c2 = HexMetric.TerraceLerp(beginColor, leftColor, i);
terrain.AddTriangleUnperturbed(v1, v2, boundary);
terrain.AddTriangleColor(c1, c2, boundaryColor);
terrain.AddTriangleTerrainTypes(types);
}
//last triangle
terrain.AddTriangleUnperturbed(v2, HexMetric.Perturb(left), boundary);
terrain.AddTriangleColor(c2, leftColor, boundaryColor);
terrain.AddTriangleTerrainTypes(types);
}
internal static EdgeVertices TerraceLerp(EdgeVertices a, EdgeVertices b, int step)
{
EdgeVertices result;
result.v1 = HexMetric.TerraceLerp(a.v1, b.v1, step);
result.v2 = HexMetric.TerraceLerp(a.v2, b.v2, step);
result.v3 = HexMetric.TerraceLerp(a.v3, b.v3, step);
result.v4 = HexMetric.TerraceLerp(a.v4, b.v4, step);
result.v5 = HexMetric.TerraceLerp(a.v5, b.v5, step);
return(result);
}
void TriangulateEdgeTerraces(EdgeVertices begin, HexCell beginCell, EdgeVertices end, HexCell endCell, bool hasRoad)
{
EdgeVertices e2 = EdgeVertices.TerraceLerp(begin, end, 1);
Color c2 = HexMetric.TerraceLerp(color1, color2, 1);
float t1 = beginCell.TerrainTypeIndex;
float t2 = endCell.TerrainTypeIndex;
//first task
TriangulateEdgeStrip(begin, color1, t1, e2, c2, t2, hasRoad);
//process of creating actual steps
for (int i = 2; i < HexMetric.terraceSteps; i++)
{
EdgeVertices e1 = e2;
Color c1 = c2;
e2 = EdgeVertices.TerraceLerp(begin, end, i);
c2 = HexMetric.TerraceLerp(color1, color2, i);
TriangulateEdgeStrip(e1, c1, t1, e2, c2, t2, hasRoad);
}
//last task
TriangulateEdgeStrip(e2, c2, t1, end, color2, t2, hasRoad);
}
void TriangulateCornerTerraces(Vector3 begin, HexCell beginCell, Vector3 left, HexCell leftCell, Vector3 right, HexCell rightCell)
{
Vector3 v3 = HexMetric.TerraceLerp(begin, left, 1);
Vector3 v4 = HexMetric.TerraceLerp(begin, right, 1);
Color c3 = HexMetric.TerraceLerp(color1, color2, 1);
Color c4 = HexMetric.TerraceLerp(color1, color3, 1);
Vector3 types;
types.x = beginCell.TerrainTypeIndex;
types.y = leftCell.TerrainTypeIndex;
types.z = rightCell.TerrainTypeIndex;
terrain.AddTriangle(begin, v3, v4);
terrain.AddTriangleColor(color1, c3, c4);
terrain.AddTriangleTerrainTypes(types);
for (int i = 2; i < HexMetric.terraceSteps; i++)
{
Vector3 v1 = v3;
Vector3 v2 = v4;
Color c1 = c3;
Color c2 = c4;
v3 = HexMetric.TerraceLerp(begin, left, i);
v4 = HexMetric.TerraceLerp(begin, right, i);
c3 = HexMetric.TerraceLerp(color1, color2, i);
c4 = HexMetric.TerraceLerp(color1, color3, i);
terrain.AddQuad(v1, v2, v3, v4);
terrain.AddQuadColor(c1, c2, c3, c4);
terrain.AddQuadTerrainTypes(types);
}
terrain.AddQuad(v3, v4, left, right);
terrain.AddQuadColor(c3, c4, color2, color3);
terrain.AddQuadTerrainTypes(types);
}
