Camera.worldToCameraMatrix

説明

ワールド空間からカメラ空間に変換する行列。

This matrix is often referred to as "view matrix" in graphics literature.

Use this to calculate the Camera space position of GameObjects or to provide a custom Camera's location that is not based on the transform.

Note that camera space matches OpenGL convention: camera's forward is the negative Z axis. This is different from Unity's convention, where forward is the positive Z axis.

If you change this matrix, the camera no longer updates its rendering based on its Transform. This lasts until you call ResetWorldToCameraMatrix.

// Offsets camera's rendering from the transform's position.
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public Vector3 offset = new Vector3(0, 1, 0);
    Camera cam;

    void Start()
    {
        cam = GetComponent<Camera>();
    }

    void LateUpdate()
    {
        Vector3 camoffset = new Vector3(-offset.x, -offset.y, offset.z);
        Matrix4x4 m = Matrix4x4.TRS(camoffset, Quaternion.identity, new Vector3(1, 1, -1));
        cam.worldToCameraMatrix = m * transform.worldToLocalMatrix;
    }
}

See Also: Matrix4x4.LookAt, CommandBuffer.SetViewMatrix.