Transform.InverseTransformPoint

Description

ワールド空間からローカル空間へ position を変換します。Transform.TransformPointとは逆の機能になります

返される位置情報はスケールに影響されていることに注意してください。方向に関する情報を扱う場合はTransform.InverseTransformDirectionを使用します。

	// Calculate the transform's position relative to the camera.

	var cam = Camera.main.transform;
	var cameraRelative = cam.InverseTransformPoint(transform.position);
	if (cameraRelative.z > 0)
		print ("The object is in front of the camera");
	else
		print ("The object is behind the camera");

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public Transform cam = Camera.main.transform;
    public Vector3 cameraRelative = cam.InverseTransformPoint(transform.position);
    void Example() {
        if (cameraRelative.z > 0)
            print("The object is in front of the camera");
        else
            print("The object is behind the camera");
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	public cam as Transform = Camera.main.transform

	public cameraRelative as Vector3 = cam.InverseTransformPoint(transform.position)

	def Example() as void:
		if cameraRelative.z > 0:
			print('The object is in front of the camera')
		else:
			print('The object is behind the camera')

Description

ワールド空間からローカル空間へ x, y, z を変換します。Transform.TransformPointとは逆の機能になります

返される位置情報はスケールに影響されていることに注意してください。方向に関する情報を扱う場合はTransform.InverseTransformDirectionを使用します。

	// Calculate the world origin relative to this transform.

	relativePoint = transform.InverseTransformPoint(0, 0, 0);
	if (relativePoint.z > 0)
		print ("The world origin is in front of this object");
	else
		print ("The world origin is behind of this object");

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Example() {
        relativePoint = transform.InverseTransformPoint(0, 0, 0);
        if (relativePoint.z > 0)
            print("The world origin is in front of this object");
        else
            print("The world origin is behind of this object");
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	def Example() as void:
		relativePoint = transform.InverseTransformPoint(0, 0, 0)
		if relativePoint.z > 0:
			print('The world origin is in front of this object')
		else:
			print('The world origin is behind of this object')