static Vector2?GetPointInPlane(Context.Branch branch, Camera camera, Vector3 sphereToCamera)
{
Vector3 direction;
float denominator;
if (sphereToCamera.sqrMagnitude == 0f)
{
// Camera is at the center of the object.
direction = branch.up;
denominator = 1f;
}
else
{
direction = sphereToCamera.normalized;
denominator = Vector3.Dot(branch.up, direction);
if (denominator <= 0f)
{
// Camera is in opposite hemisphere.
return(null);
}
}
Vector3 pointOnPlane = direction / denominator;
Vector2 pointInPlane = new Vector2(Vector3.Dot(branch.forward, pointOnPlane), Vector3.Dot(branch.right, pointOnPlane));
if (pointInPlane.x < -1f || 1f < pointInPlane.x || pointInPlane.y < -1f || 1f < pointInPlane.y)
{
return(null);
}
return(pointInPlane);
}
public static Node CreateRoot(Context.Constants constants, Context.Depth depth, Context.Branch branch)
{
GameObject gameObject = new GameObject("Chunk");
gameObject.transform.SetParent(branch.gameObject.transform, false);
MeshFilter meshFilter = gameObject.AddComponent <MeshFilter>();
MeshRenderer meshRenderer = gameObject.AddComponent <MeshRenderer>();
meshRenderer.enabled = false;
meshRenderer.sharedMaterial = constants.material;
int[] path = new int[0];
int[] neighborBranches;
int[][] neighborPaths;
GetNeighborPaths(path, branch.index, out neighborBranches, out neighborPaths);
return(new Node
{
parent = null,
children = null,
path = path,
neighborBranches = neighborBranches,
neighborPaths = neighborPaths,
branch = branch,
depth = depth,
offset = Vector2.zero,
gameObject = gameObject,
mesh = null,
meshFilter = meshFilter,
meshRenderer = meshRenderer,
meshRequest = null,
meshRequestCancellation = null
});
}