void TriangulateOpenWater(HexDirection dir, HexCell cell, HexCell neighbor, Vector3 center)
{
var c1 = center + HexMetrics.GetFirstWaterCorner(dir);
var c2 = center + HexMetrics.GetSecondWaterCorner(dir);
water.AddTriangle(center, c1, c2);
if (dir <= HexDirection.SE && neighbor)
{
var bridge = HexMetrics.GetWaterBridge(dir);
var e1 = c1 + bridge;
var e2 = c2 + bridge;
water.AddQuad(c1, c2, e1, e2);
if (dir <= HexDirection.E)
{
var nextNeighbor = cell.GetNeighbor(dir.Next());
if (!nextNeighbor || !nextNeighbor.isUnderWater)
{
return;
}
water.AddTriangle(c2, e2, c2 + HexMetrics.GetWaterBridge(dir.Next()));
}
}
}
void TriangulateWaterShore(HexDirection dir, HexCell cell, HexCell neighbor, Vector3 center)
{
var e1 = new EdgeVertices(
center + HexMetrics.GetFirstWaterCorner(dir),
center + HexMetrics.GetSecondWaterCorner(dir));
water.AddTriangle(center, e1.v1, e1.v2);
water.AddTriangle(center, e1.v2, e1.v3);
water.AddTriangle(center, e1.v3, e1.v4);
water.AddTriangle(center, e1.v4, e1.v5);
var center2 = neighbor.position;
center2.y = center.y;
var e2 = new EdgeVertices(
center2 + HexMetrics.GetSecondSolidCorner(dir.Opposite()),
center2 + HexMetrics.GetFirstSolidCorner(dir.Opposite()));
if (cell.HasRiverThroughEdge(dir))
{
TriangulateEstuary(e1, e2, cell.incomingRiver == dir);
}
else
{
waterShore.AddQuad(e1.v1, e1.v2, e2.v1, e2.v2);
waterShore.AddQuad(e1.v2, e1.v3, e2.v2, e2.v3);
waterShore.AddQuad(e1.v3, e1.v4, e2.v3, e2.v4);
waterShore.AddQuad(e1.v4, e1.v5, e2.v4, e2.v5);
waterShore.AddQuadUV(0f, 0f, 0f, 1f);
waterShore.AddQuadUV(0f, 0f, 0f, 1f);
waterShore.AddQuadUV(0f, 0f, 0f, 1f);
waterShore.AddQuadUV(0f, 0f, 0f, 1f);
}
var nextNeighbor = cell.GetNeighbor(dir.Next());
if (nextNeighbor)
{
var v3 = nextNeighbor.position + (nextNeighbor.isUnderWater
? HexMetrics.GetFirstWaterCorner(dir.Previous())
: HexMetrics.GetFirstSolidCorner(dir.Previous()));
v3.y = center.y;
waterShore.AddTriangle(e1.v5, e2.v5, v3);
waterShore.AddTriangleUV(
new Vector2(0f, 0f),
new Vector2(0f, 1f),
new Vector2(0f, nextNeighbor.isUnderWater ? 0f : 1f));
}
}
