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 TriangulateTerrainConnection(
Hex source,
Hex neighbor,
TerrainTriangulationData data,
HexDirections direction,
HexRiverData riverData,
Dictionary <HexDirections, bool> roadEdges,
Dictionary <HexDirections, ElevationEdgeTypes> elevationEdgeTypes,
float hexOuterRadius,
int wrapSize,
MapMeshChunkLayer terrain,
FeatureContainer features
)
{
if (riverData.HasRiverInDirection(direction))
{
data.connectionEdgeVertices.vertex3.y = neighbor.StreamBedY;
}
bool hasRoad = roadEdges[direction];
if (
// hex.GetEdgeType(direction) == ElevationEdgeTypes.Slope
elevationEdgeTypes[direction] == ElevationEdgeTypes.Slope
)
{
TriangulateEdgeTerracesTerrain(
data.centerEdgeVertices,
source,
data.connectionEdgeVertices,
neighbor,
hexOuterRadius,
wrapSize,
terrain
);
}
else
{
TriangulateEdgeStripTerrain(
data.centerEdgeVertices,
_weights1,
source.Index,
data.connectionEdgeVertices,
_weights2,
neighbor.Index,
hexOuterRadius,
wrapSize,
terrain
);
}
features.AddWall(
data.centerEdgeVertices,
source,
data.connectionEdgeVertices,
neighbor,
riverData.HasRiverInDirection(direction),
hasRoad,
hexOuterRadius,
wrapSize
);
return(data);
}
