private void TriangulateEdgeTerraces(
EdgeVertices begin, HexCell beginCell,
EdgeVertices end, HexCell endCell,
bool hasRoad
)
{
EdgeVertices e2 = EdgeVertices.TerraceLerp(begin, end, 1);
Color w2 = HexMetrics.TerraceLerp(weights1, weights2, 1);
float i1 = beginCell.Index;
float i2 = endCell.Index;
TriangulateEdgeStrip(begin, weights1, i1, e2, w2, i2, hasRoad);
for (int i = 2; i < HexMetrics.terraceSteps; i++)
{
EdgeVertices e1 = e2;
Color w1 = w2;
e2 = EdgeVertices.TerraceLerp(begin, end, i);
w2 = HexMetrics.TerraceLerp(weights1, weights2, i);
TriangulateEdgeStrip(e1, w1, i1, e2, w2, i2, hasRoad);
}
TriangulateEdgeStrip(e2, w2, i1, end, weights2, i2, hasRoad);
}
public void AddWall(
EdgeVertices near, HexCell nearCell,
EdgeVertices far, HexCell farCell,
bool hasRiver, bool hasRoad
)
{
if (nearCell.Walled != farCell.Walled &&
!nearCell.IsUnderwater && !farCell.IsUnderwater &&
nearCell.GetEdgeType(farCell) != HexEdgeType.Cliff)
{
AddWallSegment(near.v1, far.v1, near.v2, far.v2);
if (hasRiver || hasRoad)
{
AddWallCap(near.v2, far.v2);
AddWallCap(far.v4, near.v4);
}
else
{
AddWallSegment(near.v2, far.v2, near.v3, far.v3);
AddWallSegment(near.v3, far.v3, near.v4, far.v4);
}
AddWallSegment(near.v4, far.v4, near.v5, far.v5);
}
}
private 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) == 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);
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
);
}
}
}
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);
EdgeVertices 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)
{
bool 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
)
{
bool hasRoadThroughEdge = cell.HasRoadThroughEdge(direction);
bool previousHasRiver = cell.HasRiverThroughEdge(direction.Previous());
bool nextHasRiver = cell.HasRiverThroughEdge(direction.Next());
Vector2 interpolators = GetRoadInterpolators(direction, cell);
Vector3 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;
}
Vector3 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;
}
Vector3 offset = HexMetrics.GetSolidEdgeMiddle(middle);
roadCenter += offset * 0.25f;
if (direction == middle &&
cell.HasRoadThroughEdge(direction.Opposite()))
{
features.AddBridge(
roadCenter,
center - offset * (HexMetrics.innerToOuter * 0.7f)
);
}
}
Vector3 mL = Vector3.Lerp(roadCenter, e.v1, interpolators.x);
Vector3 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 TriangulateEstuary(
EdgeVertices e1, EdgeVertices e2, bool incomingRiver, Vector3 indices)
{
waterShore.AddTriangle(e2.v1, e1.v2, e1.v1);
waterShore.AddTriangle(e2.v5, e1.v5, e1.v4);
waterShore.AddTriangleUV(
new Vector2(0f, 1f), new Vector2(0f, 0f), new Vector2(0f, 0f)
);
waterShore.AddTriangleUV(
new Vector2(0f, 1f), new Vector2(0f, 0f), new Vector2(0f, 0f)
);
waterShore.AddTriangleCellData(indices, weights2, weights1, weights1);
waterShore.AddTriangleCellData(indices, weights2, weights1, weights1);
estuaries.AddQuad(e2.v1, e1.v2, e2.v2, e1.v3);
estuaries.AddTriangle(e1.v3, e2.v2, e2.v4);
estuaries.AddQuad(e1.v3, e1.v4, e2.v4, e2.v5);
estuaries.AddQuadUV(
new Vector2(0f, 1f), new Vector2(0f, 0f),
new Vector2(1f, 1f), new Vector2(0f, 0f)
);
estuaries.AddTriangleUV(
new Vector2(0f, 0f), new Vector2(1f, 1f), new Vector2(1f, 1f)
);
estuaries.AddQuadUV(
new Vector2(0f, 0f), new Vector2(0f, 0f),
new Vector2(1f, 1f), new Vector2(0f, 1f)
);
estuaries.AddQuadCellData(
indices, weights2, weights1, weights2, weights1
);
estuaries.AddTriangleCellData(indices, weights1, weights2, weights2);
estuaries.AddQuadCellData(indices, weights1, weights2);
if (incomingRiver)
{
estuaries.AddQuadUV2(
new Vector2(1.5f, 1f), new Vector2(0.7f, 1.15f),
new Vector2(1f, 0.8f), new Vector2(0.5f, 1.1f)
);
estuaries.AddTriangleUV2(
new Vector2(0.5f, 1.1f),
new Vector2(1f, 0.8f),
new Vector2(0f, 0.8f)
);
estuaries.AddQuadUV2(
new Vector2(0.5f, 1.1f), new Vector2(0.3f, 1.15f),
new Vector2(0f, 0.8f), new Vector2(-0.5f, 1f)
);
}
else
{
estuaries.AddQuadUV2(
new Vector2(-0.5f, -0.2f), new Vector2(0.3f, -0.35f),
new Vector2(0f, 0f), new Vector2(0.5f, -0.3f)
);
estuaries.AddTriangleUV2(
new Vector2(0.5f, -0.3f),
new Vector2(0f, 0f),
new Vector2(1f, 0f)
);
estuaries.AddQuadUV2(
new Vector2(0.5f, -0.3f), new Vector2(0.7f, -0.35f),
new Vector2(1f, 0f), new Vector2(1.5f, -0.2f)
);
}
}
private void TriangulateWaterShore(
HexDirection direction, HexCell cell, HexCell neighbor, Vector3 center
)
{
EdgeVertices 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);
Vector3 center2 = neighbor.Position;
if (neighbor.ColumnIndex < cell.ColumnIndex - 1)
{
center2.x += HexMetrics.wrapSize * HexMetrics.innerDiameter;
}
else if (neighbor.ColumnIndex > cell.ColumnIndex + 1)
{
center2.x -= HexMetrics.wrapSize * HexMetrics.innerDiameter;
}
center2.y = center.y;
EdgeVertices 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);
}
HexCell nextNeighbor = cell.GetNeighbor(direction.Next());
if (nextNeighbor != null)
{
Vector3 center3 = nextNeighbor.Position;
if (nextNeighbor.ColumnIndex < cell.ColumnIndex - 1)
{
center3.x += HexMetrics.wrapSize * HexMetrics.innerDiameter;
}
else if (nextNeighbor.ColumnIndex > cell.ColumnIndex + 1)
{
center3.x -= HexMetrics.wrapSize * HexMetrics.innerDiameter;
}
Vector3 v3 = center3 + (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
);
}
}
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;
}
EdgeVertices 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 TriangulateWithRiverBeginOrEnd(HexDirection direction, HexCell cell, Vector3 center, EdgeVertices e)
{
EdgeVertices m = new EdgeVertices(Vector3.Lerp(center, e.v1, 0.5f), Vector3.Lerp(center, e.v5, 0.5f));
m.v3.y = e.v3.y;
TriangulateEdgeStrip(m, weights1, cell.Index, e, weights1, cell.Index);
TriangulateEdgeFan(center, m, cell.Index);
if (!cell.IsUnderwater)
{
bool reversed = cell.HasIncomingRiver;
Vector3 indices;
indices.x = indices.y = indices.z = cell.Index;
TriangulateRiverQuad(m.v2, m.v4, e.v2, e.v4, cell.RiverSurfaceY, 0.6f, reversed, indices);
center.y = m.v2.y = m.v4.y = cell.RiverSurfaceY;
rivers.AddTriangle(center, m.v2, m.v4);
if (reversed)
{
rivers.AddTriangleUV(new Vector2(0.5f, 0.4f), new Vector2(1f, 0.2f), new Vector2(0f, 0.2f));
}
else
{
rivers.AddTriangleUV(new Vector2(0.5f, 0.4f), new Vector2(0f, 0.6f), new Vector2(1f, 0.6f));
}
rivers.AddTriangleCellData(indices, weights1);
}
}
private void TriangulateWithoutRiver(HexDirection direction, HexCell cell, Vector3 center, EdgeVertices e)
{
TriangulateEdgeFan(center, e, cell.Index);
if (cell.HasRoads)
{
Vector2 interpolators = GetRoadInterpolators(direction, cell);
TriangulateRoad(
center,
Vector3.Lerp(center, e.v1, interpolators.x),
Vector3.Lerp(center, e.v5, interpolators.y),
e,
cell.HasRoadThroughEdge(direction),
cell.Index
);
}
}
void TriangulateRoadAdjacentToRiver(HexDirection direction, HexCell cell, Vector3 center, EdgeVertices e)
{
bool hasRoadThroughEdge = cell.HasRoadThroughEdge(direction);
bool previousHasRiver = cell.HasRiverThroughEdge(direction.Previous());
bool nextHasRiver = cell.HasRiverThroughEdge(direction.Next());
Vector2 interpolators = GetRoadInterpolators(direction, cell);
Vector3 roadCenter = center;
// push the road center in the opposite direction of river
if (cell.HasRiverBeginOrEnd)
{
roadCenter += HexMetrics.GetSolidEdgeMiddle(cell.RiverBeginOrEndDirection.Opposite()) * (1f / 3f);
}
// Check if river is a straight
else if (cell.IncomingRiver == cell.OutgoingRiver.Opposite())
{
Vector3 corner;
if (previousHasRiver)
{
// Skip triangulation if there is no road on this side on=f the river
if (!hasRoadThroughEdge && !cell.HasRoadThroughEdge(direction.Next()))
{
return;
}
corner = HexMetrics.GetSecondSolidCorner(direction);
}
else
{
// Skip triangulation if there is no road on this side on=f the river
if (!hasRoadThroughEdge && !cell.HasRoadThroughEdge(direction.Previous()))
{
return;
}
corner = HexMetrics.GetFirstSolidCorner(direction);
}
roadCenter += corner * 0.5f;
// Add bridge once per cell, if there is a road on both sides
if (cell.IncomingRiver == direction.Next() && (cell.HasRoadThroughEdge(direction.Next2()) || cell.HasRoadThroughEdge(direction.Opposite())))
{
features.AddBridge(roadCenter, center - corner * 0.5f);
}
center += corner * 0.25f;
}
// Check if river is a zigzag
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;
}
// Check if we are inside of a curve
else if (previousHasRiver && nextHasRiver)
{
if (!hasRoadThroughEdge)
{
return;
}
Vector3 offset = HexMetrics.GetSolidEdgeMiddle(direction) * HexMetrics.innerToOutter;
roadCenter += offset * 0.7f;
center += offset * 0.5f;
}
// We are outside of a curve
else
{
HexDirection middle;
if (previousHasRiver)
{
middle = direction.Next();
}
else if (nextHasRiver)
{
middle = direction.Previous();
}
else
{
middle = direction;
}
if (!cell.HasRoadThroughEdge(middle.Previous()) && !cell.HasRoadThroughEdge(middle) && !cell.HasRoadThroughEdge(middle.Next()))
{
return;
}
Vector3 offset = HexMetrics.GetSolidEdgeMiddle(middle);
roadCenter += offset * 0.25f;
// Add bridge once per cell, if there is a road on both sides
if (direction == middle && cell.HasRoadThroughEdge(direction.Opposite()))
{
features.AddBridge(roadCenter, center - offset * (HexMetrics.innerToOutter * 0.7f));
}
}
Vector3 mL = Vector3.Lerp(roadCenter, e.v1, interpolators.x);
Vector3 mR = Vector3.Lerp(roadCenter, e.v5, interpolators.y);
TriangulateRoad(roadCenter, mL, mR, e, hasRoadThroughEdge);
if (previousHasRiver)
{
TriangulateRoadEdge(roadCenter, center, mL);
}
if (nextHasRiver)
{
TriangulateRoadEdge(roadCenter, mR, center);
}
}
// Fill the gap between each cell in the direction given
void TriangulateConnection(HexCell cell, HexDirection direction, EdgeVertices e1)
{
HexCell neighbor = cell.GetNeighbor(direction);
if (neighbor == null)
{
return;
}
// Build the bridge
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;
if (!cell.IsUnderwater)
{
if (!neighbor.IsUnderwater)
{
// Normal river
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)
{
// Waterfall from cell to neighbor
TriangulateWaterfallInWater(e1.v2, e1.v4, e2.v2, e2.v4, cell.RiverSurfaceY, neighbor.RiverSurfaceY, neighbor.WaterSurfaceY);
}
}
else if (!neighbor.IsUnderwater && neighbor.Elevation > cell.WaterLevel)
{
// Waterfall from neighbor to cell
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, hasRoad);
}
else
{
TriangulateEdgeStrip(e1, cell.Color, e2, neighbor.Color, hasRoad);
}
features.AddWall(e1, cell, e2, neighbor, hasRiver, hasRoad);
// Filling the gap
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;
// Find the lowest cell
if (cell.Elevation <= neighbor.Elevation)
{
if (cell.Elevation <= nextNeighbor.Elevation)
{
TriangulateCorner(e1.v5, cell, e2.v5, neighbor, v5, nextNeighbor); // cell is the lowest
}
else
{
TriangulateCorner(v5, nextNeighbor, e1.v5, cell, e2.v5, neighbor); // nextNeighbor is the lowest
}
}
else if (neighbor.Elevation <= nextNeighbor.Elevation)
{
TriangulateCorner(e2.v5, neighbor, v5, nextNeighbor, e1.v5, cell); // neighbor is the lowest
}
else
{
TriangulateCorner(v5, nextNeighbor, e1.v5, cell, e2.v5, neighbor); // nextNeighbor is the lowest
}
}
}