void Generate()
{
PoissonDiskGenerator.minDist = minDistance;
PoissonDiskGenerator.k = k;
PoissonDiskGenerator.sampleRange = sampleRange;
result = PoissonDiskGenerator.Generate();
// create result texture.
if (resultTexture != null)
{
if (resultTexture.width != (int)PoissonDiskGenerator.sampleRange)
{
DestroyImmediate(resultTexture);
}
}
resultTexture = new Texture2D((int)PoissonDiskGenerator.sampleRange,
(int)PoissonDiskGenerator.sampleRange);
ClearTetxure(Color.white);
sampleCount = PoissonDiskGenerator.sampleCount;
for (int i = 0; i < sampleCount; ++i)
{
resultTexture.SetPixel((int)result[i].x, (int)result[i].y, Color.black);
}
resultTexture.Apply();
}
public void scatterGrass(GameObject grass, float minDist, int k)
{
PoissonDiskGenerator.minDist = minDist;
PoissonDiskGenerator.k = k;
PoissonDiskGenerator.sampleRange = chunkSize - 1;
List <Vector2> results = PoissonDiskGenerator.Generate();
int width = (int)Mathf.Sqrt(heightMap.Length);
foreach (Vector2 point in results)
{
int index = (int)(Mathf.Floor(point.x) + Mathf.Floor(point.y) * width);
Vector3 worldPos = terrainObject.transform.TransformPoint(mesh.vertices[index]);
GameObject clone = Instantiate(grass, worldPos, Quaternion.identity) as GameObject;
clone.transform.rotation = Quaternion.Euler(0, Random.Range(0.0f, 360.0f), 0);
}
}
//---------------------------------------------------------------------
//
// HELPER PRIVATE FUNCTIONS
//
//---------------------------------------------------------------------
// Fill an area with prefabs
private static GameObject PoissonDiskFill(Terrain terrain, PoissonDiskFillData poissonDiskFillData, string name = "Scenery Area")
{
var result = new GameObject(name);
result.transform.position = Vector3.zero;
result.transform.rotation = Quaternion.identity;
if (poissonDiskFillData.Prefabs == null || poissonDiskFillData.Prefabs.Length <= 0)
{
return(result);
}
var levelCreator = terrain.transform.parent.GetComponent <LevelCreator>();
var size = poissonDiskFillData.FrameSize;
PoissonDiskGenerator.minDist = poissonDiskFillData.MinDist;
PoissonDiskGenerator.sampleRange = (size.x > size.y ? size.x : size.y);
PoissonDiskGenerator.Generate();
foreach (var sample in PoissonDiskGenerator.ResultSet)
{
var point = sample + poissonDiskFillData.FramePosition;
var height = terrain.SampleHeight(new Vector3(point.x, 0, point.y) - terrain.transform.position);
if (height <= (levelCreator.WaterHeight + 0.01f) * terrain.terrainData.size.y || // not underwater
!point.IsInsidePolygon(poissonDiskFillData.Polygon) || //not outside of the area
!poissonDiskFillData.ClearPolygons.TrueForAll(a => !point.IsInsidePolygon(a)) //not inside of any clear polygon
)
{
continue;
}
var go = Object.Instantiate(poissonDiskFillData.Prefabs[Random.Range(0, poissonDiskFillData.Prefabs.Length)]);
go.transform.position = new Vector3(point.x, height, point.y) + terrain.transform.position;
go.transform.rotation = terrain.GetNormalRotation(go.transform.position) * Quaternion.Euler(go.transform.rotation.eulerAngles.x, Random.Range(0, 360f), go.transform.rotation.eulerAngles.z);
go.CorrectAngleTolerance(poissonDiskFillData.AngleTolerance);
go.transform.parent = result.transform;
if (poissonDiskFillData.NotWalkable)
{
var navMod = go.AddComponent <NavMeshModifier>();
navMod.overrideArea = true;
navMod.area = NavMesh.GetAreaFromName("Not Walkable");
}
}
return(result);
}