private void TriangulateWithRiverBeginOrEnd(VoronoiCell cell, VoronoiDirection direction, Vector3 center, EdgeVertices e)
{
EdgeVertices m = new EdgeVertices(
Vector3.Lerp(center, e.V1, 0.5f),
Vector3.Lerp(center, e.V5, 0.5f)
);
m.V3 = Vector3.ClampMagnitude(m.V3, cell.StreamBedElevation);
TriangulateEdgeStrip(m, cell.Color, e, cell.Color);
TriangulateEdgeFan(center, m, cell.Color);
bool reversed = cell.HasIncomingRiver;
TriangulateRiverQuad(m.V2, m.V4, e.V2, e.V4, cell.RiverSurfaceElevation, 0.6f, reversed);
center = Vector3.ClampMagnitude(center, cell.RiverSurfaceElevation);
m.V2 = Vector3.ClampMagnitude(m.V2, cell.RiverSurfaceElevation);
m.V4 = Vector3.ClampMagnitude(m.V4, cell.RiverSurfaceElevation);
Rivers.AddTriangle(center, m.V2, m.V4);
if (reversed)
{
Rivers.AddTriangleUV(new Vector2(0.5f, 0.4f), new Vector2(1f, 0.2f), new Vector2(0f, 0.2f));
}
else
{
Rivers.AddTriangleUV(new Vector2(0.5f, 0.4f), new Vector2(0f, 0.6f), new Vector2(1f, 0.6f));
}
}
private void TriangulateRoad(Vector3 center, Vector3 mL, Vector3 mR, EdgeVertices e, bool hasRoadThroughCellEdge)
{
if (hasRoadThroughCellEdge)
{
Vector3 mC = Vector3.Lerp(mL, mR, 0.5f);
TriangulateRoadSegment(mL, mC, mR, e.V2, e.V3, e.V4);
Roads.AddTriangle(center, mL, mC);
Roads.AddTriangle(center, mC, mR);
Roads.AddTriangleUV(new Vector2(1f, 0f), new Vector2(0f, 0f), new Vector2(1f, 0f));
Roads.AddTriangleUV(new Vector2(1f, 0f), new Vector2(1f, 0f), new Vector2(0f, 0f));
}
else
{
TriangulateRoadEdge(center, mL, mR);
}
}