private void SpawnAtVertex(Vector3 position, Vector2 uv, Vector3 localNormal)
{
Vector3 worldPosition = MeshFilterComponent.transform.TransformPoint(position);
Vector3 offset = Random.insideUnitSphere * PositionOffset;
offset.y = 0;
float distributionMultiplier = 1;
if (DistributionMap != null)
{
distributionMultiplier = DistributionMap.GetPixelBilinear(uv.x, uv.y).a;
}
Vector3 scale = Vector3.one * Size * distributionMultiplier;
GameObject g = Instantiate(Prefab);
g.transform.parent = this.transform;
g.transform.position = worldPosition + offset;
g.transform.localScale = scale;
g.name = Prefab.name;
if (FollowVertexNormal)
{
g.transform.up = MeshFilterComponent.transform.TransformPoint(localNormal);
}
float rotationDegreeY = MaxRotation * Random.value;
g.transform.Rotate(0, rotationDegreeY, 0, Space.Self);
}
public void Populate()
{
if (MeshFilterComponent == null || MeshFilterComponent.sharedMesh == null)
{
return;
}
Utilities.ClearChildren(this.transform);
Vector3[] vertices = MeshFilterComponent.sharedMesh.vertices;
Vector2[] uvCoords = MeshFilterComponent.sharedMesh.uv;
Vector3[] normals = MeshFilterComponent.sharedMesh.normals;
for (int i = 0; i < vertices.Length; ++i)
{
float distributionMultiplier = 1;
if (DistributionMap != null)
{
distributionMultiplier = DistributionMap.GetPixelBilinear(uvCoords[i].x, uvCoords[i].y).a;
}
float probability = Density * distributionMultiplier;
if (Random.value < probability)
{
SpawnAtVertex(vertices[i], uvCoords[i], normals[i]);
}
}
}
