void TriangulateConnection(HexDirection direction, HexCell cell, EdgeVertices e1)
{
//Is border cell?
HexCell neighbor = cell.GetNeighbor(direction);
if (neighbor == null)
{
return;
}
//create bridge between cells
Vector3 bridge = HexMetric.GetBridge(direction);
bridge.y = neighbor.Position.y - cell.Position.y;
EdgeVertices e2 = new EdgeVertices(e1.v1 + bridge, e1.v5 + bridge);
if (cell.HasRiverThroughEdge(direction))
{
e2.v3.y = neighbor.StreamBedY;
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);
}
else if (cell.Elevation > neighbor.WaterLevel)
{
TriangulateWaterfallInWater(e1.v2, e1.v4, e2.v2, e2.v4, cell.RiverSurfaceY, neighbor.RiverSurfaceY, neighbor.WaterSurfaceY);
}
}
else if (
!neighbor.IsUnderwater && neighbor.Elevation > cell.WaterLevel)
{
TriangulateWaterfallInWater(e2.v4, e2.v2, e1.v4, e1.v2, neighbor.RiverSurfaceY, cell.RiverSurfaceY, cell.WaterSurfaceY);
}
}
if (cell.GetEdgeType(direction) == HexEdgeType.Slope)
{
TriangulateEdgeTerraces(e1, cell, e2, neighbor, cell.HasRoadThroughEdge(direction));
}
else // cliffs or flat cells
{
TriangulateEdgeStrip(e1, color1, cell.TerrainTypeIndex, e2, color2, cell.TerrainTypeIndex, cell.HasRoadThroughEdge(direction));
}
//create triangle that connects three cells together
HexCell nextNeighbor = cell.GetNeighbor(direction.Next());
if (direction <= HexDirection.E && nextNeighbor != null)
{
Vector3 v5 = e1.v5 + HexMetric.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);
}
}
}
