/// <summary>
/// Setups, creates, and builds the base hexagon mesh that always fills an entire tile.
/// </summary>
public Mesh BaseHexagon(HexMetrics metrics, HexMap hexMap, int column, int row, Mesh recycleMesh = null)
{
ClearAndSetup("Hexagon Tile", recycleMesh);
Vector3 center = HexUtils.PositionFromCoordinates(column, row, metrics.tileSize);
float centerHeight = metrics.XZPositionToHeight(center);
float[] cornerHeights = new float[6];
foreach (var corner in HexCornerUtils.AllCorners())
{
Vector3 vertex = HexUtils.CornerPosition((int)corner) * metrics.tileSize;
cornerHeights[corner.GetInt()] = metrics.XZPositionToHeight(center + vertex);
}
#region Base Hexagon
// Add vertex data for each corner first in order to reduce redundancy (18 vertices -> 7)
// Not making triangles yet
foreach (HexCorner corner in HexCornerUtils.AllCorners())
{
// Vertice w/ height
Vector3 cornerPoint = SpokePoint(metrics, corner, 1, centerHeight, cornerHeights);
float vertexHeight = centerHeight + (cornerHeights[corner.GetInt()] - centerHeight) * 1;
AddHexPointData(metrics, cornerPoint, center, Color.white, vertexHeight);
}
// Add the center point last just so that we can use the HexCorner enums as indexes and the center is @ 6
int Center = 6; // just for readability
// UV
uvs.Add(metrics.XZPositionToUV(center));
// Vertice
Vector3 cenVertex = new Vector3(0, centerHeight * metrics.mapHeight, 0);
vertices.Add(cenVertex);
// Color
colors.Add(Color.white);
// Gradient
uvs2.Add(new Vector2(centerHeight, 0));
// Make triangles
foreach (HexCorner corner in HexCornerUtils.AllCorners())
{
triangles.Add((int)corner.Next()); // Next first because of normals
triangles.Add((int)corner);
triangles.Add(Center);
}
#endregion
return(Build());
}
public Mesh ElevatedTileHexagon(HexMetrics metrics, HexMap hexMap, int column, int row, Mesh recycleMesh = null)
{
ClearAndSetup("Hexagon Tile With Elevation", recycleMesh);
Vector3 center = HexUtils.PositionFromCoordinates(column, row, metrics.tileSize);
int elevation = hexMap.GetElevationAt(column, row);
float elevationHeight = metrics.elevationStepHeight * elevation;
Color baseColor = hexMap.tileset.GetColorForElevation(elevation, metrics.maxElevation);
float centerHeight = metrics.XZPositionToHeight(center);
float[] cornerHeights = new float[6];
foreach (var corner in HexCornerUtils.AllCorners())
{
Vector3 vertex = HexUtils.CornerPosition((int)corner) * metrics.tileSize;
cornerHeights[corner.GetInt()] = metrics.XZPositionToHeight(center + vertex);
}
#region Base Hexagon
float baseHexagonPercentage = metrics.tileInnerRadiusPercent;
// Add vertex data for each corner first in order to reduce redundancy (18 vertices -> 7)
// Not making triangles yet
foreach (HexCorner corner in HexCornerUtils.AllCorners())
{
// Vertice w/ height
//Vector3 cornerPoint = SpokePoint(metrics, corner, baseHexagonPercentage, centerHeight, cornerHeights);
// Base the height of the 'spokes' on the straight line from the center out to the corner of the whole tile
Vector3 cornerVertex = HexUtils.CornerPosition((int)corner) * metrics.tileSize * baseHexagonPercentage;
float projectedSpokeHeight = (cornerHeights[corner.GetInt()] - centerHeight)
* baseHexagonPercentage;
float vertexHeight = centerHeight + projectedSpokeHeight;
Vector3 cornerPoint = cornerVertex + Vector3.up * (vertexHeight * metrics.mapHeight + elevationHeight);
float textureGradient = vertexHeight;
AddHexPointData(metrics, cornerPoint, center, baseColor, textureGradient);
}
// Add the center point last just so that we can use the HexCorner enums as indexes and the center is @ 6
int Center = 6; // just for readability
// UV
uvs.Add(metrics.XZPositionToUV(center));
// Vertice
Vector3 centerVertex = new Vector3(0, centerHeight * metrics.mapHeight + elevationHeight, 0);
vertices.Add(centerVertex);
// Color
colors.Add(baseColor);
// Gradient
uvs2.Add(new Vector2(centerHeight, 0));
// Make triangles
foreach (HexCorner corner in HexCornerUtils.AllCorners())
{
triangles.Add((int)corner.Next()); // Next first because of normals
triangles.Add((int)corner);
triangles.Add(Center);
}
#endregion
// The starting index of the points for the outer ring
int ringStartIndex = vertices.Count; // should be 7 here
// ----------Add another ring to the hexagon
#region First Ring
float firstRingPercentage = metrics.tileOuterRadiusPercent;
// Add vertex data for each outside corner
// Not making triangles yet
// Add three points for each corner: the actual outside corner and then the two bridge points
foreach (HexCorner corner in HexCornerUtils.AllCorners())
{
HexDirection direction = corner.GetDirection();
float theta = HexUtils.CornerAngle((int)corner);
//// We need to account for the three walls connecting to this corner:
//// the wall on this hex going left,
//// the wall on this hex going right,
//// and the wall adjacent to this hex running out and away
//bool leftWall = hexMap.IsWallAt(column, row, corner.GetDirection());
//bool rightWall = hexMap.IsWallAt(column, row, corner.GetDirection().Last());
//// move to the hex left of the given corner, turn two directions CW and check that wall
//bool awayWall = hexMap.IsWallAt(HexUtils.MoveFrom(column, row, corner.GetDirection()), corner.GetDirection().Last2());
// -------Actual Corner---------- -
{
Vector3 cornerVertex = HexUtils.CornerPosition((int)corner) * metrics.tileSize * firstRingPercentage;
float nextNeighborElevationHeight = metrics.elevationStepHeight *
hexMap.GetElevationAt(HexUtils.MoveFrom(column, row, direction));
float lastNeighborElevationHeight = metrics.elevationStepHeight *
hexMap.GetElevationAt(HexUtils.MoveFrom(column, row, direction.Last()));
float heightModFromElevation =
(elevationHeight + nextNeighborElevationHeight + lastNeighborElevationHeight) * 0.33f;
float projectedSpokeHeight = (cornerHeights[corner.GetInt()] - centerHeight)
* firstRingPercentage;
float vertexHeight = centerHeight + projectedSpokeHeight;
Vector3 cornerPoint = cornerVertex +
Vector3.up * (vertexHeight * metrics.mapHeight + heightModFromElevation);
float textureGradient = vertexHeight;
bool isWall = hexMap.IsWallAt(column, row, direction.Last());
Color slopeColor = baseColor;
if (isWall)
{
slopeColor = hexMap.tileset.steepSlopeColor;
}
AddHexPointData(metrics, cornerPoint, center, slopeColor, textureGradient);
}
//// ------- CCW Bridge Point -----------
{
var fromCorner = corner;
var towardCorner = corner.Next();
var bridgePercentage = metrics.tileInnerRadiusPercent;
//Vector3 bridgePoint = BridgePoint(metrics, corner, corner.Next(), firstRingPercentage,
// metrics.tileInnerRadiusPercent, centerVertex, cornerHeights);
float nextNeighborElevationHeight = metrics.elevationStepHeight *
hexMap.GetElevationAt(HexUtils.MoveFrom(column, row, direction));
float heightModFromElevation =
(elevationHeight + nextNeighborElevationHeight) * 0.5f;
Vector3 cornerVertex = HexUtils.CornerPosition((int)fromCorner) * metrics.tileSize;
cornerVertex = cornerVertex +
Vector3.up * (cornerHeights[fromCorner.GetInt()] * metrics.mapHeight + heightModFromElevation);
Vector3 nextCornerPoint = HexUtils.CornerPosition(towardCorner.GetInt()) * metrics.tileSize;
nextCornerPoint = nextCornerPoint +
Vector3.up * (cornerHeights[towardCorner.GetInt()] * metrics.mapHeight + heightModFromElevation);
Vector3 vector = nextCornerPoint - cornerVertex;
float bridgeMod = 0.5f * (1f - bridgePercentage);
Vector3 bridgePoint = cornerVertex + vector * bridgeMod;
vector = centerVertex - bridgePoint;
bridgePoint = bridgePoint + vector * (1f - firstRingPercentage);
bool isWall = hexMap.IsWallAt(column, row, direction);
Color slopeColor = baseColor;
if (isWall)
{
slopeColor = hexMap.tileset.steepSlopeColor;
}
AddHexPointData(metrics, bridgePoint, center, slopeColor, cornerHeights[corner.GetInt()]);
}
//// ------- CW Bridge Point -----------
{
//Vector3 bridgePoint = BridgePoint(metrics, corner, corner.Last(), firstRingPercentage,
// metrics.tileInnerRadiusPercent, centerVertex, cornerHeights);
var fromCorner = corner;
var towardCorner = corner.Last();
var bridgePercentage = metrics.tileInnerRadiusPercent;
//Vector3 bridgePoint = BridgePoint(metrics, corner, corner.Next(), firstRingPercentage,
// metrics.tileInnerRadiusPercent, centerVertex, cornerHeights);
float neighborElevationHeight = metrics.elevationStepHeight *
hexMap.GetElevationAt(HexUtils.MoveFrom(column, row, direction.Last()));
float heightModFromElevation =
(elevationHeight + neighborElevationHeight) * 0.5f;
Vector3 cornerVertex = HexUtils.CornerPosition((int)fromCorner) * metrics.tileSize;
cornerVertex = cornerVertex +
Vector3.up * (cornerHeights[fromCorner.GetInt()] * metrics.mapHeight + heightModFromElevation);
Vector3 nextCornerPoint = HexUtils.CornerPosition(towardCorner.GetInt()) * metrics.tileSize;
nextCornerPoint = nextCornerPoint + Vector3.up * (cornerHeights[towardCorner.GetInt()] * metrics.mapHeight + heightModFromElevation);
Vector3 vector = nextCornerPoint - cornerVertex;
float bridgeMod = 0.5f * (1f - bridgePercentage);
Vector3 bridgePoint = cornerVertex + vector * bridgeMod;
vector = centerVertex - bridgePoint;
bridgePoint = bridgePoint + vector * (1f - firstRingPercentage);
bool isWall = hexMap.IsWallAt(column, row, direction.Last());
Color slopeColor = baseColor;
if (isWall)
{
slopeColor = hexMap.tileset.steepSlopeColor;
}
AddHexPointData(metrics, bridgePoint, center, slopeColor, cornerHeights[corner.GetInt()]);
}
}
// Make triangles, accounting for one corner and one side at a time
// we actually need quads, so pairs of triangles
foreach (HexCorner corner in HexCornerUtils.AllCorners())
{
// inside point is [corner], outside point is [corner * 3 + ORStart]
int outerCorner = (int)corner * 3 + ringStartIndex + 0;
// left bridge point is [corner * 3 + ORStart + 1], right bridge point is [corner * 3 + ORStart + 2]
int rightBridgePoint = (int)corner * 3 + ringStartIndex + 2;
int leftBridgePoint = (int)corner * 3 + ringStartIndex + 1;
// corner.Next() is the point CCW
int nextRightBridgePoint = (int)corner.Next() * 3 + ringStartIndex + 2;
// first half of the quad
triangles.Add((int)corner);
triangles.Add((int)corner.Next());
triangles.Add(nextRightBridgePoint);
// second half of the quad
triangles.Add(nextRightBridgePoint);
triangles.Add(leftBridgePoint);
triangles.Add((int)corner);
// span from the quad to the corner with a quad
triangles.Add(leftBridgePoint);
triangles.Add(outerCorner);
triangles.Add((int)corner);
// second part of corner span
triangles.Add(rightBridgePoint);
triangles.Add((int)corner);
triangles.Add(outerCorner);
}
#endregion
return(Build());
}
