void TriangulateConnection(HexDirection direction, HexCell cell, EdgeVertices e1)
{
HexCell neighbor = cell.GetNeighbor(direction);
if (neighbor == null)
{
return;
}
Vector3 bridge = HexMetrics.GetBridge(direction);
bridge.y = neighbor.Position.y - cell.Position.y;
EdgeVertices e2 = new EdgeVertices(
e1.v1 + bridge,
e1.v5 + bridge
);
bool hasRiver = cell.HasRiverThroughEdge(direction);
bool hasRoad = cell.HasRoadThroughEdge(direction);
if (hasRiver)
{
e2.v3.y = neighbor.StreamBedY;
Vector3 indices;
indices.x = indices.z = cell.Index;
indices.y = neighbor.Index;
if (!cell.IsUnderwater)
{
if (!neighbor.IsUnderwater)
{
TriangulateRiverQuad(
e1.v2, e1.v4, e2.v2, e2.v4,
cell.RiverSurfaceY, neighbor.RiverSurfaceY, 0.8f,
cell.HasIncomingRiver && cell.IncomingRiver == direction,
indices
);
}
else if (cell.Elevation > neighbor.WaterLevel)
{
TriangulateWaterfallInWater(
e1.v2, e1.v4, e2.v2, e2.v4,
cell.RiverSurfaceY, neighbor.RiverSurfaceY,
neighbor.WaterSurfaceY, indices
);
}
}
else if (!neighbor.IsUnderwater && neighbor.Elevation > cell.WaterLevel)
{
TriangulateWaterfallInWater(
e2.v4, e2.v2, e1.v4, e1.v2,
neighbor.RiverSurfaceY, cell.RiverSurfaceY,
cell.WaterSurfaceY, indices
);
}
}
if (cell.GetEdgeType(direction) == EdgeType.Slope)
{
TriangulateEdgeTerraces(e1, cell, e2, neighbor, hasRoad);
}
else
{
TriangulateEdgeStrip(
e1, weights1, cell.Index,
e2, weights2, neighbor.Index, hasRoad
);
}
features.AddWall(e1, cell, e2, neighbor, hasRiver, hasRoad);
HexCell nextNeighbor = cell.GetNeighbor(direction.Next());
if (direction <= HexDirection.E && nextNeighbor != null)
{
Vector3 v5 = e1.v5 + HexMetrics.GetBridge(direction.Next());
v5.y = nextNeighbor.Position.y;
if (cell.Elevation <= neighbor.Elevation)
{
if (cell.Elevation <= nextNeighbor.Elevation)
{
TriangulateCorner(
e1.v5, cell, e2.v5, neighbor, v5, nextNeighbor
);
}
else
{
TriangulateCorner(
v5, nextNeighbor, e1.v5, cell, e2.v5, neighbor
);
}
}
else if (neighbor.Elevation <= nextNeighbor.Elevation)
{
TriangulateCorner(
e2.v5, neighbor, v5, nextNeighbor, e1.v5, cell
);
}
else
{
TriangulateCorner(
v5, nextNeighbor, e1.v5, cell, e2.v5, neighbor
);
}
}
}