private void TriangulateWaterShoreWithRiver(
EdgeVertices edge1,
EdgeVertices edge2,
bool incomingRiver,
Vector3 indices,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer waterShore
)
{
waterShore.AddTrianglePerturbed(
edge2.vertex1,
edge1.vertex2,
edge1.vertex1,
hexOuterRadius,
wrapSize
);
waterShore.AddTrianglePerturbed(
edge2.vertex5,
edge1.vertex5,
edge1.vertex4,
hexOuterRadius,
wrapSize
);
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.AddTriangleHexData(
indices,
_weights2,
_weights1,
_weights1
);
waterShore.AddTriangleHexData(
indices,
_weights2,
_weights1,
_weights1
);
}
protected void TriangulateEdgeFan(
Vector3 center,
EdgeVertices edge,
float index,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer terrain
)
{
terrain.AddTrianglePerturbed(
center,
edge.vertex1,
edge.vertex2,
hexOuterRadius,
wrapSize
);
terrain.AddTrianglePerturbed(
center,
edge.vertex2,
edge.vertex3,
hexOuterRadius,
wrapSize
);
terrain.AddTrianglePerturbed(
center,
edge.vertex3,
edge.vertex4,
hexOuterRadius,
wrapSize
);
terrain.AddTrianglePerturbed(
center,
edge.vertex4,
edge.vertex5,
hexOuterRadius,
wrapSize
);
// All three cell indices corresponing to the sides of this
// edge are of one cell.
Vector3 indices;
indices.x = indices.y = indices.z = index;
terrain.AddTriangleHexData(indices, _weights1);
terrain.AddTriangleHexData(indices, _weights1);
terrain.AddTriangleHexData(indices, _weights1);
terrain.AddTriangleHexData(indices, _weights1);
}
private void TriangulateRoadEdge(
Vector3 center,
Vector3 middleLeft,
Vector3 middleRight,
float index,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer roads
)
{
roads.AddTrianglePerturbed(
center,
middleLeft,
middleRight,
hexOuterRadius,
wrapSize
);
roads.AddTriangleUV(
new Vector2(1f, 0f),
new Vector2(0f, 0f),
new Vector2(0f, 0f)
);
Vector3 indices;
indices.x = indices.y = indices.z = index;
roads.AddTriangleHexData(indices, _weights1);
}
private WaterTriangulationData TriangulateOpenWaterCenter(
Hex source,
WaterTriangulationData triangulationData,
HexDirections direction,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer water
)
{
triangulationData.waterSurfaceCornerLeft =
triangulationData.waterSurfaceCenter +
HexagonPoint.GetFirstWaterCorner(
direction,
hexOuterRadius
);
triangulationData.waterSurfaceCornerRight =
triangulationData.waterSurfaceCenter +
HexagonPoint.GetSecondWaterCorner(
direction,
hexOuterRadius
);
water.AddTrianglePerturbed(
triangulationData.waterSurfaceCenter,
triangulationData.waterSurfaceCornerLeft,
triangulationData.waterSurfaceCornerRight,
hexOuterRadius,
wrapSize
);
Vector3 openWaterCenterIndices;
openWaterCenterIndices.x =
openWaterCenterIndices.y =
openWaterCenterIndices.z =
source.Index;
water.AddTriangleHexData(
openWaterCenterIndices,
_weights1
);
return(triangulationData);
}
private void TriangulateCornerTerraces(
Vector3 begin,
Hex beginHex,
Vector3 left,
Hex leftHex,
Vector3 right,
Hex rightHex,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer terrain
)
{
Vector3 vertex3 = HexagonPoint.TerraceLerp(begin, left, 1);
Vector3 vertex4 = HexagonPoint.TerraceLerp(begin, right, 1);
Color weight3 = HexagonPoint.TerraceLerp(_weights1, _weights2, 1);
Color weight4 = HexagonPoint.TerraceLerp(_weights1, _weights3, 1);
Vector3 indices;
indices.x = beginHex.Index;
indices.y = leftHex.Index;
indices.z = rightHex.Index;
terrain.AddTrianglePerturbed(
begin,
vertex3,
vertex4,
hexOuterRadius,
wrapSize
);
terrain.AddTriangleHexData(
indices,
_weights1,
weight3,
weight4
);
for (int i = 2; i < HexagonPoint.terraceSteps; i++)
{
Vector3 vertex1 = vertex3;
Vector3 vertex2 = vertex4;
Color weight1 = weight3;
Color weight2 = weight4;
vertex3 = HexagonPoint.TerraceLerp(begin, left, i);
vertex4 = HexagonPoint.TerraceLerp(begin, right, i);
weight3 = HexagonPoint.TerraceLerp(_weights1, _weights2, i);
weight4 = HexagonPoint.TerraceLerp(_weights1, _weights3, i);
terrain.AddQuadPerturbed(
vertex1,
vertex2,
vertex3,
vertex4,
hexOuterRadius,
wrapSize
);
terrain.AddQuadHexData(
indices,
weight1,
weight2,
weight3,
weight4
);
}
terrain.AddQuadPerturbed(
vertex3,
vertex4,
left,
right,
hexOuterRadius,
wrapSize
);
terrain.AddQuadHexData(
indices,
weight3,
weight4,
_weights2,
_weights3
);
}
private void TriangulateTerrainCorner(
Vector3 begin,
Hex beginHex,
Vector3 left,
Hex leftHex,
Vector3 right,
Hex rightHex,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer terrain,
FeatureContainer features
)
{
ElevationEdgeTypes leftEdgeType = beginHex.GetEdgeType(leftHex);
ElevationEdgeTypes rightEdgeType = beginHex.GetEdgeType(rightHex);
if (leftEdgeType == ElevationEdgeTypes.Slope)
{
if (rightEdgeType == ElevationEdgeTypes.Slope)
{
// Corner is also a terrace. Slope-Slope-Flat.
TriangulateCornerTerraces(
begin,
beginHex,
left,
leftHex,
right,
rightHex,
hexOuterRadius,
wrapSize,
terrain
);
}
// If the right edge is flat, must terrace from left instead of bottom.
// Slope-Flat-Slope
else if (rightEdgeType == ElevationEdgeTypes.Flat)
{
TriangulateCornerTerraces(
left,
leftHex,
right,
rightHex,
begin,
beginHex,
hexOuterRadius,
wrapSize,
terrain
);
}
else
{
/* At least one edge is a cliff. Slope-Cliff-Slope or Slope-Cliff-Cliff. Standard case
* because slope on left and flat on right.
*/
TriangulateCornerTerracesCliff(
begin,
beginHex,
left,
leftHex,
right,
rightHex,
hexOuterRadius,
wrapSize,
terrain
);
}
}
else if (rightEdgeType == ElevationEdgeTypes.Slope)
{
if (leftEdgeType == ElevationEdgeTypes.Flat)
{
/* If the right edge is a slope, and the left edge is flat, must terrace from right instead
* of bottom. Flat-Slope-Slope.
*/
TriangulateCornerTerraces(
right,
rightHex,
begin,
beginHex,
left,
leftHex,
hexOuterRadius,
wrapSize,
terrain
);
}
else
{
/* At least one edge is a cliff. Slope-Cliff-Slope or Slope-Cliff-Cliff. Mirror case because
* slope on right and flat on left.
*/
TriangulateCornerCliffTerraces(
begin,
beginHex,
left,
leftHex,
right,
rightHex,
hexOuterRadius,
wrapSize,
terrain
);
}
}
/* Neither the left or right hex edge type is a slope. If the right hex type of the left hex
* is a slope, then terraces must be calculated for a corner between two cliff edges.
* Cliff-Cliff-Slope Right, or Cliff-Cliff-Slope Left.
*/
else if (leftHex.GetEdgeType(rightHex) == ElevationEdgeTypes.Slope)
{
// If Cliff-Cliff-Slope-Left
if (leftHex.elevation < rightHex.elevation)
{
TriangulateCornerCliffTerraces(
right,
rightHex,
begin,
beginHex,
left,
leftHex,
hexOuterRadius,
wrapSize,
terrain
);
}
// If Cliff-Cliff-Slope-Right
else
{
TriangulateCornerTerracesCliff(
left,
leftHex,
right,
rightHex,
begin,
beginHex,
hexOuterRadius,
wrapSize,
terrain
);
}
}
// Else all edges are cliffs. Simply draw a triangle.
else
{
terrain.AddTrianglePerturbed(
begin,
left,
right,
hexOuterRadius,
wrapSize
);
Vector3 indices;
indices.x = beginHex.Index;
indices.y = leftHex.Index;
indices.z = rightHex.Index;
terrain.AddTriangleHexData(
indices,
_weights1,
_weights2,
_weights3
);
}
features.AddWall(
begin,
beginHex,
left,
leftHex,
right,
rightHex,
hexOuterRadius,
wrapSize
);
}
private TerrainTriangulationData TriangulateRiverTerrain(
Hex source,
TerrainTriangulationData triangulationData,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer terrain
)
{
TriangulateEdgeStripTerrain(
triangulationData.middleEdgeVertices,
_weights1,
source.Index,
triangulationData.centerEdgeVertices,
_weights1,
source.Index,
hexOuterRadius,
wrapSize,
terrain
);
terrain.AddTrianglePerturbed(
triangulationData.riverCenterLeft,
triangulationData.middleEdgeVertices.vertex1,
triangulationData.middleEdgeVertices.vertex2,
hexOuterRadius,
wrapSize
);
terrain.AddQuadPerturbed(
triangulationData.riverCenterLeft,
triangulationData.terrainCenter,
triangulationData.middleEdgeVertices.vertex2,
triangulationData.middleEdgeVertices.vertex3,
hexOuterRadius,
wrapSize
);
terrain.AddQuadPerturbed(
triangulationData.terrainCenter,
triangulationData.riverCenterRight,
triangulationData.middleEdgeVertices.vertex3,
triangulationData.middleEdgeVertices.vertex4,
hexOuterRadius,
wrapSize
);
terrain.AddTrianglePerturbed(
triangulationData.riverCenterRight,
triangulationData.middleEdgeVertices.vertex4,
triangulationData.middleEdgeVertices.vertex5,
hexOuterRadius,
wrapSize
);
Vector3 centerHexIndices;
centerHexIndices.x =
centerHexIndices.y =
centerHexIndices.z =
source.Index;
terrain.AddTriangleHexData(
centerHexIndices,
_weights1
);
terrain.AddQuadHexData(
centerHexIndices,
_weights1
);
terrain.AddQuadHexData(
centerHexIndices,
_weights1
);
terrain.AddTriangleHexData(
centerHexIndices,
_weights1
);
return(triangulationData);
}
private WaterTriangulationData TriangulateShoreOpenWater(
Hex source,
Hex target,
Vector3 waterSurfaceCenter,
EdgeVertices sourceWaterEdge,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer water,
WaterTriangulationData triangulationData
)
{
water.AddTrianglePerturbed(
waterSurfaceCenter,
sourceWaterEdge.vertex1,
sourceWaterEdge.vertex2,
hexOuterRadius,
wrapSize
);
water.AddTrianglePerturbed(
waterSurfaceCenter,
sourceWaterEdge.vertex2,
sourceWaterEdge.vertex3,
hexOuterRadius,
wrapSize
);
water.AddTrianglePerturbed(
waterSurfaceCenter,
sourceWaterEdge.vertex3,
sourceWaterEdge.vertex4,
hexOuterRadius,
wrapSize
);
water.AddTrianglePerturbed(
waterSurfaceCenter,
sourceWaterEdge.vertex4,
sourceWaterEdge.vertex5,
hexOuterRadius,
wrapSize
);
// / | y
// / |
// | |
//source x/z | | target
// | |
// \ |
// \ | y
Vector3 waterShoreHexIndices;
waterShoreHexIndices.x =
waterShoreHexIndices.z = source.Index;
waterShoreHexIndices.y = target.Index;
water.AddTriangleHexData(
waterShoreHexIndices,
_weights1
);
water.AddTriangleHexData(
waterShoreHexIndices,
_weights1
);
water.AddTriangleHexData(
waterShoreHexIndices,
_weights1
);
water.AddTriangleHexData(
waterShoreHexIndices,
_weights1
);
return(triangulationData);
}
private WaterTriangulationData TriangulateOpenWaterConnection(
Hex source,
Hex target,
HexDirections direction,
WaterTriangulationData waterTriData,
TerrainTriangulationData terrainTriData,
Dictionary <HexDirections, Hex> neighbors,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer water
)
{
if (
direction <= HexDirections.Southeast
)
{
Vector3 bridge = HexagonPoint.GetWaterBridge(
direction,
hexOuterRadius
);
Vector3 edge1 = waterTriData.waterSurfaceCornerLeft + bridge;
Vector3 edge2 = waterTriData.waterSurfaceCornerRight + bridge;
water.AddQuadPerturbed(
waterTriData.waterSurfaceCornerLeft,
waterTriData.waterSurfaceCornerRight,
edge1,
edge2,
hexOuterRadius,
wrapSize
);
Vector3 openWaterIndices;
openWaterIndices.x =
openWaterIndices.z =
source.Index;
openWaterIndices.y = target.Index;
water.AddQuadHexData(
openWaterIndices,
_weights1,
_weights2
);
if (direction <= HexDirections.East)
{
Hex nextNeighbor;
if (
neighbors.TryGetValue(
direction.NextClockwise(),
out nextNeighbor
) &&
nextNeighbor.IsUnderwater
)
{
water.AddTrianglePerturbed(
waterTriData.waterSurfaceCornerRight,
edge2,
waterTriData.waterSurfaceCornerRight +
HexagonPoint.GetWaterBridge(
direction.NextClockwise(),
hexOuterRadius
),
hexOuterRadius,
wrapSize
);
openWaterIndices.z =
nextNeighbor.Index;
water.AddTriangleHexData(
openWaterIndices,
_weights1,
_weights2,
_weights3
);
}
}
}
return(waterTriData);
}
private TerrainTriangulationData TriangulateRiverBeginOrEndRiver(
Hex source,
TerrainTriangulationData triangulationData,
HexRiverData riverData,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer rivers
)
{
Vector3 riverSurfaceCenter = triangulationData.terrainCenter;
// bool reversed = hex.HasIncomingRiver;
bool reversed = riverData.HasIncomingRiver;
Vector3 indices = new Vector3(
source.Index,
source.Index,
source.Index
);
TriangulateRiverQuad(
triangulationData.middleEdgeVertices.vertex2,
triangulationData.middleEdgeVertices.vertex4,
triangulationData.centerEdgeVertices.vertex2,
triangulationData.centerEdgeVertices.vertex4,
source.RiverSurfaceY,
0.6f,
reversed,
indices,
hexOuterRadius,
wrapSize,
rivers
);
riverSurfaceCenter.y =
triangulationData.middleEdgeVertices.vertex2.y =
triangulationData.middleEdgeVertices.vertex4.y =
source.RiverSurfaceY;
rivers.AddTrianglePerturbed(
riverSurfaceCenter,
triangulationData.middleEdgeVertices.vertex2,
triangulationData.middleEdgeVertices.vertex4,
hexOuterRadius,
wrapSize
);
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.AddTriangleHexData(indices, _weights1);
return(triangulationData);
}
private void TriangulateEstuary(
EdgeVertices edge1,
EdgeVertices edge2,
bool incomingRiver,
Vector3 waterSourceRelativeHexIndices,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer estuaries
)
{
estuaries.AddQuadPerturbed(
edge2.vertex1,
edge1.vertex2,
edge2.vertex2,
edge1.vertex3,
hexOuterRadius,
wrapSize
);
estuaries.AddTrianglePerturbed(
edge1.vertex3,
edge2.vertex2,
edge2.vertex4,
hexOuterRadius,
wrapSize
);
estuaries.AddQuadPerturbed(
edge1.vertex3,
edge1.vertex4,
edge2.vertex4,
edge2.vertex5,
hexOuterRadius,
wrapSize
);
estuaries.AddQuadUV(
new Vector2(0f, 1f),
new Vector2(0f, 0f),
new Vector2(1f, 1f),
new Vector2(0f, 0f)
);
estuaries.AddQuadHexData(
waterSourceRelativeHexIndices, _weights2, _weights1, _weights2, _weights1
);
estuaries.AddTriangleHexData(waterSourceRelativeHexIndices, _weights1, _weights2, _weights2);
estuaries.AddQuadHexData(waterSourceRelativeHexIndices, _weights1, _weights2);
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)
);
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 TriangulateRoad(
Vector3 center,
Vector3 middleLeft,
Vector3 middleRight,
EdgeVertices edgeVertices,
bool hasRoadThroughHexEdge,
float index,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer roads
)
{
Vector3 indices;
indices.x = indices.y = indices.z = index;
if (hasRoadThroughHexEdge)
{
Vector3 middleCenter = Vector3.Lerp(middleLeft, middleRight, 0.5f);
TriangulateRoadSegment(
middleLeft,
middleCenter,
middleRight,
edgeVertices.vertex2,
edgeVertices.vertex3,
edgeVertices.vertex4,
_weights1,
_weights1,
indices,
hexOuterRadius,
wrapSize,
roads
);
roads.AddTrianglePerturbed(
center,
middleLeft,
middleCenter,
hexOuterRadius,
wrapSize
);
roads.AddTrianglePerturbed(
center,
middleCenter,
middleRight,
hexOuterRadius,
wrapSize
);
roads.AddTriangleUV(
new Vector2(1f, 0f),
new Vector2(0f, 0f),
new Vector2(1f, 0f)
);
roads.AddTriangleUV(
new Vector2(1f, 0f),
new Vector2(1f, 0f),
new Vector2(0f, 0f)
);
roads.AddTriangleHexData(indices, _weights1);
roads.AddTriangleHexData(indices, _weights1);
}
else
{
TriangulateRoadEdge(
center,
middleLeft,
middleRight,
index,
hexOuterRadius,
wrapSize,
roads
);
}
}
private void TriangulateWaterShore(
Hex source,
Hex target,
Vector3 waterSourceRelativeHexIndices,
HexDirections direction,
Dictionary <HexDirections, Hex> neighbors,
HexRiverData riverData,
Vector3 center,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer waterShore,
EdgeVertices edge1,
EdgeVertices edge2,
float hexInnerDiameter
)
{
// hex.HasRiverThroughEdge(direction)
if (riverData.HasRiverInDirection(direction))
{
TriangulateWaterShoreWithRiver(
edge1,
edge2,
riverData.HasIncomingRiverInDirection(direction),
waterSourceRelativeHexIndices,
hexOuterRadius,
wrapSize,
waterShore
);
}
else
{
waterShore.AddQuadPerturbed(
edge1.vertex1,
edge1.vertex2,
edge2.vertex1,
edge2.vertex2,
hexOuterRadius,
wrapSize
);
waterShore.AddQuadPerturbed(
edge1.vertex2,
edge1.vertex3,
edge2.vertex2,
edge2.vertex3,
hexOuterRadius,
wrapSize
);
waterShore.AddQuadPerturbed(
edge1.vertex3,
edge1.vertex4,
edge2.vertex3,
edge2.vertex4,
hexOuterRadius,
wrapSize
);
waterShore.AddQuadPerturbed(
edge1.vertex4,
edge1.vertex5,
edge2.vertex4,
edge2.vertex5,
hexOuterRadius,
wrapSize
);
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.AddQuadHexData(
waterSourceRelativeHexIndices,
_weights1,
_weights2
);
waterShore.AddQuadHexData(
waterSourceRelativeHexIndices,
_weights1,
_weights2
);
waterShore.AddQuadHexData(
waterSourceRelativeHexIndices,
_weights1,
_weights2
);
waterShore.AddQuadHexData(
waterSourceRelativeHexIndices,
_weights1,
_weights2
);
}
Hex nextNeighbor;
// hex.GetNeighbor(direction.NextClockwise());
if (
neighbors.TryGetValue(
direction.NextClockwise(),
out nextNeighbor
)
)
{
Vector3 center3 = nextNeighbor.Position;
if (nextNeighbor.ColumnIndex < source.ColumnIndex - 1)
{
center3.x += wrapSize * hexInnerDiameter;
}
else if (nextNeighbor.ColumnIndex > source.ColumnIndex + 1)
{
center3.x -= wrapSize * hexInnerDiameter;
}
// Work backward from the shore to obtain the triangle if the neighbor is
// underwater, otherwise obtain normal triangle.
Vector3 vertex3 =
center3 + (
nextNeighbor.IsUnderwater ?
HexagonPoint.GetFirstWaterCorner(
direction.PreviousClockwise(),
hexOuterRadius
) :
HexagonPoint.GetFirstSolidCorner(
direction.PreviousClockwise(),
hexOuterRadius
)
);
vertex3.y = center.y;
waterShore.AddTrianglePerturbed(
edge1.vertex5,
edge2.vertex5,
vertex3,
hexOuterRadius,
wrapSize
);
waterSourceRelativeHexIndices.z = nextNeighbor.Index;
waterShore.AddTriangleHexData(
waterSourceRelativeHexIndices,
_weights1,
_weights2,
_weights3
);
waterShore.AddTriangleUV(
new Vector2(0f, 0f),
new Vector2(0f, 1f),
new Vector2(0f, nextNeighbor.IsUnderwater ? 0f : 1f)
);
}
}