public override void ProcessHeights(TerrainWrapper wrapper, LayerBase baseLayer, int stencilKey)
{
var layer = baseLayer as MMTerrainLayer;
if (layer == null)
{
Debug.LogWarning(string.Format("Attempted to write {0} to incorrect layer type! Expected Layer {1} to be {2}, but it was {3}", name, baseLayer.name, GetLayerType(), baseLayer.GetType()), this);
return;
}
if (!Network || Configuration == null)
{
return;
}
var config = Configuration.GetConfig <Config>();
if (config == null)
{
Debug.LogError("Invalid configuration! Expected ConnectionTerrainHeightConfiguration");
return;
}
var terrain = wrapper.Terrain;
var terrainPos = wrapper.Terrain.GetPosition();
var terrainSize = wrapper.Terrain.terrainData.size;
var heightRes = terrain.terrainData.heightmapResolution;
var mainSpline = NodeConnection.GetSpline();
var radius = config.Radius;
var falloffCurve = config.Falloff;
var heightCurve = config.Height;
// Create bounds to encapsulate spline (axis aligned)
var bounds = mainSpline.GetApproximateBounds();
bounds.Expand(radius * 2 * Vector3.one);
// Create object bounds
var objectBounds = mainSpline.GetApproximateXZObjectBounds();
objectBounds.Expand(radius * 2 * Vector3.one);
objectBounds.Expand(Vector3.up * 10000);
// Early cull
var axisBounds = objectBounds.ToAxisBounds();
var terrainBounds = terrain.GetComponent <Collider>().bounds;
terrainBounds.Expand(Vector3.up * 10000);
if (!terrainBounds.Intersects(axisBounds))
{
return;
}
// Get matrix space min/max
var matrixMin = terrain.WorldToHeightmapCoord(bounds.min, TerrainX.RoundType.Floor) - Coord.One;
matrixMin = matrixMin.Clamp(0, heightRes);
var matrixMax = terrain.WorldToHeightmapCoord(bounds.max, TerrainX.RoundType.Ceil) + Coord.One;
matrixMax = matrixMax.Clamp(0, heightRes);
var xDelta = matrixMax.x - matrixMin.x;
var zDelta = matrixMax.z - matrixMin.z;
var floatArraySize = new Common.Coord(
Mathf.Min(xDelta, terrain.terrainData.heightmapResolution - matrixMin.x),
Mathf.Min(zDelta, terrain.terrainData.heightmapResolution - matrixMin.z));
float planeGive = (wrapper.Terrain.terrainData.size.x / wrapper.Terrain.terrainData.heightmapResolution) * 0;
Plane startPlane, endPlane;
GenerateSplinePlanes(planeGive, mainSpline, out startPlane, out endPlane);
var layerHeights = layer.GetHeights(matrixMin.x, matrixMin.z, floatArraySize.x, floatArraySize.z, heightRes) ??
new Serializable2DFloatArray(floatArraySize.x, floatArraySize.z);
stencilKey = GetStencilKey();
if (layer.Stencil == null || layer.Stencil.Width != heightRes || layer.Stencil.Height != heightRes)
{
layer.Stencil = new Stencil(heightRes, heightRes);
}
for (var dz = 0; dz < floatArraySize.z; ++dz)
{
for (var dx = 0; dx < floatArraySize.x; ++dx)
{
var coordX = matrixMin.x + dx;
var coordZ = matrixMin.z + dz;
var worldPos = terrain.HeightmapCoordToWorldPos(new Common.Coord(coordX, coordZ));
worldPos = new Vector3(worldPos.x, objectBounds.center.y, worldPos.z);
if (!terrain.ContainsPointXZ(worldPos) ||
!objectBounds.Contains(worldPos) ||
!GeometryExtensions.BetweenPlanes(worldPos, startPlane, endPlane))
{
// Cull if we're outside of the approx bounds
continue;
}
var uniformT = mainSpline.GetClosestUniformTimeOnSplineXZ(worldPos.xz()); // Expensive!
var closestOnSpline = mainSpline.GetUniformPointOnSpline(uniformT);
var normalizedFlatDistToSpline = (worldPos - closestOnSpline).xz().magnitude / (radius);
if (normalizedFlatDistToSpline >= 1)
{
continue;
}
var maskValue = Mathf.Clamp01(falloffCurve.Evaluate(normalizedFlatDistToSpline));
var heightDelta = heightCurve.Evaluate(normalizedFlatDistToSpline);
float existingStencilStrength;
int existingStencilKey;
MiscUtilities.DecompressStencil(layer.Stencil[coordX, coordZ], out existingStencilKey, out existingStencilStrength);
if (existingStencilKey != stencilKey &&
existingStencilKey > stencilKey &&
!(existingStencilStrength < maskValue && maskValue > 0))
{
continue;
}
// Refine our worldposition to be on the same XZ plane as the spline point
worldPos = new Vector3(worldPos.x, closestOnSpline.y, worldPos.z);
// Find the point on the spline closest to this given point
var naturalT = mainSpline.UniformToNaturalTime(uniformT);
// Get the upvec from the natural time
var up = mainSpline.GetUpVector(naturalT).normalized;
// Create a plane and cast against it
var plane = new Plane(up, closestOnSpline);
float dist = 0;
var castRay = new Ray(worldPos, Vector3.down);
plane.Raycast(castRay, out dist);
var castPoint = castRay.GetPoint(dist);
var heightAtPoint = (castPoint.y + heightDelta);
heightAtPoint -= terrainPos.y;
heightAtPoint /= terrainSize.y;
heightAtPoint = MiscUtilities.FloorToUshort(heightAtPoint);
var existingHeight = layerHeights[dx, dz];
var newHeight = Mathf.Lerp(existingHeight, heightAtPoint, Mathf.Clamp01(maskValue));
layerHeights[dx, dz] = newHeight;
var key = maskValue > existingStencilStrength ? stencilKey : existingStencilKey;
var newRawStencilValue = MiscUtilities.CompressStencil(key, /*stencilKey == existingStencilKey ?*/ Mathf.Max(maskValue, existingStencilStrength) /* : maskValue + existingStencilStrength*/);
//newRawStencilValue = MiscUtilities.CompressStencil(key, 1);
layer.Stencil[coordX, coordZ] = newRawStencilValue;
}
}
layer.SetHeights(matrixMin.x, matrixMin.z,
layerHeights, wrapper.Terrain.terrainData.heightmapResolution);
}