GeometryUtility.CalculateFrustumPlanes

Description

Calculates frustum planes.

This function takes given camera's view frustum and returns six planes that form it.

Ordering: [0] = Left, [1] = Right, [2] = Down, [3] = Up, [4] = Near, [5] = Far

See Also: Plane, GeometryUtility.TestPlanesAABB.

    // Creates 6 planes that represent the camera frustum.

    private var cam : Camera;
    private var planes : Plane[];

    function Start() {
        cam = Camera.main;
        planes = GeometryUtility.CalculateFrustumPlanes(cam);

        for(var i : int = 0; i < planes.Length; i++) {
            var p : GameObject = GameObject.CreatePrimitive(PrimitiveType.Plane);
            p.name = "Plane " + i.ToString();
            p.transform.position = -planes[i].normal * planes[i].distance;
            p.transform.rotation = Quaternion.FromToRotation(Vector3.up, planes[i].normal);
        }
    }

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    private Camera cam;
    private Plane[] planes;
    void Start() {
        cam = Camera.main;
        planes = GeometryUtility.CalculateFrustumPlanes(cam);
        int i = 0;
        while (i < planes.Length) {
            GameObject p = GameObject.CreatePrimitive(PrimitiveType.Plane);
            p.name = "Plane " + i.ToString();
            p.transform.position = -planes[i].normal * planes[i].distance;
            p.transform.rotation = Quaternion.FromToRotation(Vector3.up, planes[i].normal);
            i++;
        }
    }
}

Description

Calculates frustum planes.

This function returns six planes of a frustum defined by given view & projection matrix.

See Also: Plane, GeometryUtility.TestPlanesAABB.