private void TriangulateAdjacentToRiver( HexDirection direction, HexCell cell, Vector3 center, EdgeVertices e ) { if (cell.HasRoads) { TriangulateRoadAdjacentToRiver(direction, cell, center, e); } if (cell.HasRiverThroughEdge(direction.Next())) { if (cell.HasRiverThroughEdge(direction.Previous())) { center += HexMetrics.GetSolidEdgeMiddle(direction) * (HexMetrics.innerToOuter * 0.5f); } else if ( cell.HasRiverThroughEdge(direction.Previous2()) ) { center += HexMetrics.GetFirstSolidCorner(direction) * 0.25f; } } else if ( cell.HasRiverThroughEdge(direction.Previous()) && cell.HasRiverThroughEdge(direction.Next2()) ) { center += HexMetrics.GetSecondSolidCorner(direction) * 0.25f; } var m = new EdgeVertices( Vector3.Lerp(center, e.v1, 0.5f), Vector3.Lerp(center, e.v5, 0.5f) ); TriangulateEdgeStrip( m, weights1, cell.Index, e, weights1, cell.Index ); TriangulateEdgeFan(center, m, cell.Index); if (!cell.IsUnderwater && !cell.HasRoadThroughEdge(direction)) { features.AddFeature(cell, (center + e.v1 + e.v5) * (1f / 3f)); } }
private void Triangulate(HexDirection direction, HexCell cell) { var center = cell.Position; var e = new EdgeVertices( center + HexMetrics.GetFirstSolidCorner(direction), center + HexMetrics.GetSecondSolidCorner(direction) ); if (cell.HasRiver) { if (cell.HasRiverThroughEdge(direction)) { e.v3.y = cell.StreamBedY; if (cell.HasRiverBeginOrEnd) { TriangulateWithRiverBeginOrEnd(direction, cell, center, e); } else { TriangulateWithRiver(direction, cell, center, e); } } else { TriangulateAdjacentToRiver(direction, cell, center, e); } } else { TriangulateWithoutRiver(direction, cell, center, e); if (!cell.IsUnderwater && !cell.HasRoadThroughEdge(direction)) { features.AddFeature(cell, (center + e.v1 + e.v5) * (1f / 3f)); } } if (direction <= HexDirection.SE) { TriangulateConnection(direction, cell, e); } if (cell.IsUnderwater) { TriangulateWater(direction, cell, center); } }
private void TriangulateConnection( HexDirection direction, HexCell cell, EdgeVertices e1 ) { var neighbor = cell.GetNeighbor(direction); if (neighbor == null) { return; } var bridge = HexMetrics.GetBridge(direction); bridge.y = neighbor.Position.y - cell.Position.y; var e2 = new EdgeVertices( e1.v1 + bridge, e1.v5 + bridge ); var hasRiver = cell.HasRiverThroughEdge(direction); var 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) == HexEdgeType.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); var nextNeighbor = cell.GetNeighbor(direction.Next()); if (direction <= HexDirection.E && nextNeighbor != null) { var 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 ); } } }
private void TriangulateWithRiver( HexDirection direction, HexCell cell, Vector3 center, EdgeVertices e ) { Vector3 centerL, centerR; if (cell.HasRiverThroughEdge(direction.Opposite())) { centerL = center + HexMetrics.GetFirstSolidCorner(direction.Previous()) * 0.25f; centerR = center + HexMetrics.GetSecondSolidCorner(direction.Next()) * 0.25f; } else if (cell.HasRiverThroughEdge(direction.Next())) { centerL = center; centerR = Vector3.Lerp(center, e.v5, 2f / 3f); } else if (cell.HasRiverThroughEdge(direction.Previous())) { centerL = Vector3.Lerp(center, e.v1, 2f / 3f); centerR = center; } else if (cell.HasRiverThroughEdge(direction.Next2())) { centerL = center; centerR = center + HexMetrics.GetSolidEdgeMiddle(direction.Next()) * (0.5f * HexMetrics.innerToOuter); } else { centerL = center + HexMetrics.GetSolidEdgeMiddle(direction.Previous()) * (0.5f * HexMetrics.innerToOuter); centerR = center; } center = Vector3.Lerp(centerL, centerR, 0.5f); var m = new EdgeVertices( Vector3.Lerp(centerL, e.v1, 0.5f), Vector3.Lerp(centerR, e.v5, 0.5f), 1f / 6f ); m.v3.y = center.y = e.v3.y; TriangulateEdgeStrip( m, weights1, cell.Index, e, weights1, cell.Index ); terrain.AddTriangle(centerL, m.v1, m.v2); terrain.AddQuad(centerL, center, m.v2, m.v3); terrain.AddQuad(center, centerR, m.v3, m.v4); terrain.AddTriangle(centerR, m.v4, m.v5); Vector3 indices; indices.x = indices.y = indices.z = cell.Index; terrain.AddTriangleCellData(indices, weights1); terrain.AddQuadCellData(indices, weights1); terrain.AddQuadCellData(indices, weights1); terrain.AddTriangleCellData(indices, weights1); if (!cell.IsUnderwater) { var reversed = cell.IncomingRiver == direction; TriangulateRiverQuad( centerL, centerR, m.v2, m.v4, cell.RiverSurfaceY, 0.4f, reversed, indices ); TriangulateRiverQuad( m.v2, m.v4, e.v2, e.v4, cell.RiverSurfaceY, 0.6f, reversed, indices ); } }
private void TriangulateRoadAdjacentToRiver( HexDirection direction, HexCell cell, Vector3 center, EdgeVertices e ) { var hasRoadThroughEdge = cell.HasRoadThroughEdge(direction); var previousHasRiver = cell.HasRiverThroughEdge(direction.Previous()); var nextHasRiver = cell.HasRiverThroughEdge(direction.Next()); var interpolators = GetRoadInterpolators(direction, cell); var roadCenter = center; if (cell.HasRiverBeginOrEnd) { roadCenter += HexMetrics.GetSolidEdgeMiddle( cell.RiverBeginOrEndDirection.Opposite() ) * (1f / 3f); } else if (cell.IncomingRiver == cell.OutgoingRiver.Opposite()) { Vector3 corner; if (previousHasRiver) { if ( !hasRoadThroughEdge && !cell.HasRoadThroughEdge(direction.Next()) ) { return; } corner = HexMetrics.GetSecondSolidCorner(direction); } else { if ( !hasRoadThroughEdge && !cell.HasRoadThroughEdge(direction.Previous()) ) { return; } corner = HexMetrics.GetFirstSolidCorner(direction); } roadCenter += corner * 0.5f; if (cell.IncomingRiver == direction.Next() && ( cell.HasRoadThroughEdge(direction.Next2()) || cell.HasRoadThroughEdge(direction.Opposite()) )) { features.AddBridge(roadCenter, center - corner * 0.5f); } center += corner * 0.25f; } else if (cell.IncomingRiver == cell.OutgoingRiver.Previous()) { roadCenter -= HexMetrics.GetSecondCorner(cell.IncomingRiver) * 0.2f; } else if (cell.IncomingRiver == cell.OutgoingRiver.Next()) { roadCenter -= HexMetrics.GetFirstCorner(cell.IncomingRiver) * 0.2f; } else if (previousHasRiver && nextHasRiver) { if (!hasRoadThroughEdge) { return; } var offset = HexMetrics.GetSolidEdgeMiddle(direction) * HexMetrics.innerToOuter; roadCenter += offset * 0.7f; center += offset * 0.5f; } else { HexDirection middle; if (previousHasRiver) { middle = direction.Next(); } else if (nextHasRiver) { middle = direction.Previous(); } else { middle = direction; } if ( !cell.HasRoadThroughEdge(middle) && !cell.HasRoadThroughEdge(middle.Previous()) && !cell.HasRoadThroughEdge(middle.Next()) ) { return; } var offset = HexMetrics.GetSolidEdgeMiddle(middle); roadCenter += offset * 0.25f; if ( direction == middle && cell.HasRoadThroughEdge(direction.Opposite()) ) { features.AddBridge( roadCenter, center - offset * (HexMetrics.innerToOuter * 0.7f) ); } } var mL = Vector3.Lerp(roadCenter, e.v1, interpolators.x); var mR = Vector3.Lerp(roadCenter, e.v5, interpolators.y); TriangulateRoad(roadCenter, mL, mR, e, hasRoadThroughEdge, cell.Index); if (previousHasRiver) { TriangulateRoadEdge(roadCenter, center, mL, cell.Index); } if (nextHasRiver) { TriangulateRoadEdge(roadCenter, mR, center, cell.Index); } }
private void TriangulateWaterShore( HexDirection direction, HexCell cell, HexCell neighbor, Vector3 center ) { var e1 = new EdgeVertices( center + HexMetrics.GetFirstWaterCorner(direction), center + HexMetrics.GetSecondWaterCorner(direction) ); 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); Vector3 indices; indices.x = indices.z = cell.Index; indices.y = neighbor.Index; water.AddTriangleCellData(indices, weights1); water.AddTriangleCellData(indices, weights1); water.AddTriangleCellData(indices, weights1); water.AddTriangleCellData(indices, weights1); var center2 = neighbor.Position; center2.y = center.y; var e2 = new EdgeVertices( center2 + HexMetrics.GetSecondSolidCorner(direction.Opposite()), center2 + HexMetrics.GetFirstSolidCorner(direction.Opposite()) ); if (cell.HasRiverThroughEdge(direction)) { TriangulateEstuary( e1, e2, cell.HasIncomingRiver && cell.IncomingRiver == direction, indices ); } 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); waterShore.AddQuadCellData(indices, weights1, weights2); waterShore.AddQuadCellData(indices, weights1, weights2); waterShore.AddQuadCellData(indices, weights1, weights2); waterShore.AddQuadCellData(indices, weights1, weights2); } var nextNeighbor = cell.GetNeighbor(direction.Next()); if (nextNeighbor != null) { var v3 = nextNeighbor.Position + (nextNeighbor.IsUnderwater ? HexMetrics.GetFirstWaterCorner(direction.Previous()) : HexMetrics.GetFirstSolidCorner(direction.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) ); indices.z = nextNeighbor.Index; waterShore.AddTriangleCellData( indices, weights1, weights2, weights3 ); } }