private void TriangulateEdgeStrip(EdgeVertices edge1, Color color1, float type1, EdgeVertices edge2, Color color2, float type2, bool hasRoad = false)
{
_terrain.AddQuad(edge1.v1, edge1.v2, edge2.v1, edge2.v2);
_terrain.AddQuadColor(color1, color2);
_terrain.AddQuad(edge1.v2, edge1.v3, edge2.v2, edge2.v3);
_terrain.AddQuadColor(color1, color2);
_terrain.AddQuad(edge1.v3, edge1.v4, edge2.v3, edge2.v4);
_terrain.AddQuadColor(color1, color2);
_terrain.AddQuad(edge1.v4, edge1.v5, edge2.v4, edge2.v5);
_terrain.AddQuadColor(color1, color2);
var types = new Vector3(type1, type2, type1);
_terrain.AddQuadTerrainTypes(types);
_terrain.AddQuadTerrainTypes(types);
_terrain.AddQuadTerrainTypes(types);
_terrain.AddQuadTerrainTypes(types);
if (hasRoad)
{
TriangulateRoadSegment(edge1.v2, edge1.v3, edge1.v4, edge2.v2, edge2.v3, edge2.v4);
}
}
private void TriangulateEdgeTerraces(EdgeVertices edge1, HexCell beginCell, EdgeVertices edge2, HexCell endCell, bool hasRoad)
{
float t1 = beginCell.TerrainTypeIndex;
float t2 = endCell.TerrainTypeIndex;
var e2 = HexMetrics.GetTerracePosition(edge1, edge2, 1);
// var c2 = HexMetrics.GetTerraceColor(beginCell.Color, endCell.Color, 1);
var c2 = HexMetrics.GetTerraceColor(sColor1, sColor2, 1);
// TriangulateEdgeStrip(edge1, beginCell.Color, e2, c2, hasRoad);
TriangulateEdgeStrip(edge1, sColor1, t1, e2, c2, t2, hasRoad);
for (var i = 2; i < HexMetrics.terraceSteps; i++)
{
var e1 = e2;
var c1 = c2;
e2 = HexMetrics.GetTerracePosition(edge1, edge2, i);
// c2 = HexMetrics.GetTerraceColor(beginCell.Color, endCell.Color, i);
c2 = HexMetrics.GetTerraceColor(sColor1, sColor2, i);
TriangulateEdgeStrip(e1, c1, t1, e2, c2, t2, hasRoad);
}
// TriangulateEdgeStrip(e2, c2, edge2, endCell.Color, hasRoad);
TriangulateEdgeStrip(e2, c2, t1, edge2, sColor2, t2, hasRoad);
}
private void TriangulateConnection(HexDirection direction, HexCell cell, EdgeVertices edge)
{
var neighbor = cell.GetNeighbor(direction);
if (neighbor == null)
{
return;
}
var bridge = HexMetrics.GetBridge(direction);
var edgeType = HexEdgeTypeExtension.GetEdgeType(cell.Evaluation, neighbor.Evaluation);
bridge.y = neighbor.Position.y - cell.Position.y;
var neighborEdge = new EdgeVertices(edge.v1 + bridge, edge.v5 + bridge, HexMetrics.edgeOuterStep);
if (cell.HasRiverThroughEdge(direction))
{
neighborEdge.v3.y = neighbor.StreamBedY;
if (!cell.IsUnderWater)
{
if (!neighbor.IsUnderWater)
{
var isReverse = cell.HasInComingRiver && cell.IncomingRiver == direction;
TriangulateRiverQuad(edge.v2, edge.v4, neighborEdge.v2, neighborEdge.v4, cell.RiverSurfaceY, neighbor.RiverSurfaceY, 0.8f, isReverse);
}
else if (cell.Evaluation > neighbor.WaterLevel)
{
TriangulateWaterFall(edge.v2, edge.v4, neighborEdge.v2, neighborEdge.v4, cell.RiverSurfaceY, neighbor.RiverSurfaceY, neighbor.WaterSurfaceY);
}
}
else if (!neighbor.IsUnderWater && neighbor.Evaluation > cell.WaterLevel)
{
TriangulateWaterFall(neighborEdge.v4, neighborEdge.v2, edge.v4, edge.v2, neighbor.RiverSurfaceY, cell.RiverSurfaceY, cell.WaterSurfaceY);
}
}
if (edgeType == HexEdgeType.Slop)
{
TriangulateEdgeTerraces(edge, cell, neighborEdge, neighbor, cell.HasRoadThroughEdge(direction));
}
else
{
// TriangulateEdgeStrip(edge, cell.Color, neighborEdge, neighbor.Color, cell.HasRoadThroughEdge(direction));
TriangulateEdgeStrip(edge, sColor1, cell.TerrainTypeIndex, neighborEdge, sColor2, neighbor.TerrainTypeIndex, cell.HasRoadThroughEdge(direction));
}
var nextNeighbor = cell.GetNeighbor(direction.Next());
if (direction <= HexDirection.E && nextNeighbor != null)
{
var v5 = edge.v5 + HexMetrics.GetBridge(direction.Next());
v5.y = nextNeighbor.Position.y;
if (cell.Evaluation <= neighbor.Evaluation)
{
if (cell.Evaluation <= nextNeighbor.Evaluation)
{
TriangulateCorner(edge.v5, cell, neighborEdge.v5, neighbor, v5, nextNeighbor);
}
else
{
TriangulateCorner(v5, nextNeighbor, edge.v5, cell, neighborEdge.v5, neighbor);
}
}
else
{
if (neighbor.Evaluation <= nextNeighbor.Evaluation)
{
TriangulateCorner(neighborEdge.v5, neighbor, v5, nextNeighbor, edge.v5, cell);
}
else
{
TriangulateCorner(v5, nextNeighbor, edge.v5, cell, neighborEdge.v5, neighbor);
}
}
}
}
private void TriangulateWithRiver(HexDirection direction, HexCell cell, Vector3 center, EdgeVertices edge)
{
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, edge.v5, 2f / 3f);
}
else if (cell.HasRiverThroughEdge(direction.Previous()))
{
centerL = Vector3.Lerp(center, edge.v1, 2f / 3f);
centerR = center;
}
else if (cell.HasRiverThroughEdge(direction.Next().Next()))
{
centerL = center;
centerR = center + HexMetrics.GetSolidEdgeMiddle(direction.Next()) * (0.5f * HexMetrics.innerToOuter);
}
else if (cell.HasRiverThroughEdge(direction.Previous().Previous()))
{
centerL = center + HexMetrics.GetSolidEdgeMiddle(direction.Previous()) * (0.5f * HexMetrics.innerToOuter);
centerR = center;
}
else
{
centerL = centerR = center;
}
var mEdge = new EdgeVertices(Vector3.Lerp(centerL, edge.v1, 0.5f), Vector3.Lerp(centerR, edge.v5, 0.5f), HexMetrics.edgeOuterStep);
mEdge.v3.y = center.y = edge.v3.y = cell.StreamBedY;
// TriangulateEdgeStrip(mEdge, cell.Color, edge, cell.Color);
TriangulateEdgeStrip(mEdge, sColor1, cell.TerrainTypeIndex, edge, sColor1, cell.TerrainTypeIndex);
_terrain.AddTriangle(centerL, mEdge.v1, mEdge.v2);
// _terrain.AddTriangleColor(cell.Color);
_terrain.AddTriangleColor(sColor1);
_terrain.AddQuad(centerL, center, mEdge.v2, mEdge.v3);
// _terrain.AddQuadColor(cell.Color);
_terrain.AddQuadColor(sColor1);
_terrain.AddQuad(center, centerR, mEdge.v3, mEdge.v4);
// _terrain.AddQuadColor(cell.Color);
_terrain.AddQuadColor(sColor1);
_terrain.AddTriangle(centerR, mEdge.v4, mEdge.v5);
// _terrain.AddTriangleColor(cell.Color);
_terrain.AddTriangleColor(sColor1);
var types = new Vector3(cell.TerrainTypeIndex, cell.TerrainTypeIndex, cell.TerrainTypeIndex);
_terrain.AddTriangleTerrainTypes(types);
_terrain.AddQuadTerrainTypes(types);
_terrain.AddQuadTerrainTypes(types);
_terrain.AddTriangleTerrainTypes(types);
if (!cell.IsUnderWater)
{
var reverse = cell.IncomingRiver == direction;
TriangulateRiverQuad(centerL, centerR, mEdge.v2, mEdge.v4, cell.RiverSurfaceY, 0.4f, reverse);
TriangulateRiverQuad(mEdge.v2, mEdge.v4, edge.v2, edge.v4, cell.RiverSurfaceY, 0.6f, reverse);
}
}
private void TriangulateWithRiverBeginOrEnd(HexDirection direction, HexCell cell, Vector3 center, EdgeVertices edge)
{
var mEdge = new EdgeVertices(
Vector3.Lerp(center, edge.v1, 0.5f),
Vector3.Lerp(center, edge.v5, 0.5f),
HexMetrics.edgeOuterStep);
mEdge.v3.y = edge.v3.y;
// TriangulateEdgeStrip(mEdge, cell.Color, edge, cell.Color);
// TriangulateEdgeFan(mEdge, center, cell.Color);
TriangulateEdgeStrip(mEdge, sColor1, cell.TerrainTypeIndex, edge, sColor1, cell.TerrainTypeIndex);
TriangulateEdgeFan(mEdge, center, cell.TerrainTypeIndex);
if (!cell.IsUnderWater)
{
bool isReverse = cell.HasInComingRiver;
TriangulateRiverQuad(mEdge.v2, mEdge.v4, edge.v2, edge.v4, cell.RiverSurfaceY, 0.6f, isReverse);
center.y = mEdge.v2.y = mEdge.v4.y = cell.RiverSurfaceY;
_river.AddTriangle(center, mEdge.v2, mEdge.v4);
if (isReverse)
{
_river.AddTriangleUV(new Vector2(0.5f, 0.4f), new Vector2(1, 0.2f), new Vector2(0, 0.2f));
}
else
{
_river.AddTriangleUV(new Vector2(0.5f, 0.4f), new Vector2(0, 0.6f), new Vector2(1, 0.6f));
}
}
}
private void TriangulateRoadAdjacentToRiver(HexDirection direction, HexCell cell, Vector3 center, EdgeVertices edge)
{
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;
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.HasRiverThroughEdge(middle.Next()))
{
return;
}
roadCenter += HexMetrics.GetSolidEdgeMiddle(middle) * 0.25f;
}
var mL = Vector3.Lerp(roadCenter, edge.v1, interpolators.x);
var mR = Vector3.Lerp(roadCenter, edge.v5, interpolators.y);
TriangulateRoad(roadCenter, mL, mR, edge, hasRoadThroughEdge);
if (cell.HasRiverThroughEdge(direction.Previous()))
{
TriangulateRoadEdge(roadCenter, center, mL);
}
if (cell.HasRiverThroughEdge(direction.Next()))
{
TriangulateRoadEdge(roadCenter, mR, center);
}
}
private void TriangulateAdjacentToRiver(HexDirection direction, HexCell cell, Vector3 center, EdgeVertices edge)
{
if (cell.HasRoads)
{
TriangulateRoadAdjacentToRiver(direction, cell, center, edge);
}
if (cell.HasRiverThroughEdge(direction.Next()))
{
if (cell.HasRiverThroughEdge(direction.Previous()))
{
center += HexMetrics.GetSolidEdgeMiddle(direction) * (HexMetrics.innerToOuter * 0.5f);
}
else if (cell.HasRiverThroughEdge(direction.Previous().Previous()))
{
center += HexMetrics.GetFirstSolidCorner(direction) * 0.25f;
}
}
else if (cell.HasRiverThroughEdge(direction.Previous()))
{
if (cell.HasRiverThroughEdge(direction.Next().Next()))
{
center += HexMetrics.GetSecondSolidCorner(direction) * 0.25f;
}
}
var mEdge = new EdgeVertices(
Vector3.Lerp(center, edge.v1, 0.5f),
Vector3.Lerp(center, edge.v5, 0.5f), HexMetrics.edgeOuterStep);
// TriangulateEdgeStrip(mEdge, cell.Color, edge, cell.Color);
// TriangulateEdgeFan(mEdge, center, cell.Color);
TriangulateEdgeStrip(mEdge, sColor1, cell.TerrainTypeIndex, edge, sColor1, cell.TerrainTypeIndex);
TriangulateEdgeFan(mEdge, center, cell.TerrainTypeIndex);
}
private void TriangulateWithoutRiver(HexDirection direction, HexCell cell, Vector3 center, EdgeVertices edge)
{
// TriangulateEdgeFan(edge, center, cell.Color);
TriangulateEdgeFan(edge, center, cell.TerrainTypeIndex);
if (cell.HasRoads)
{
var interpolators = GetRoadInterpolators(direction, cell);
TriangulateRoad(center,
Vector3.Lerp(center, edge.v1, interpolators.x),
Vector3.Lerp(center, edge.v5, interpolators.y),
edge, cell.HasRoadThroughEdge(direction));
}
}