Physics.Raycast

Parameters

Returns

bool レイが任意のコライダーと交わる場合はtrue、それ以外はfalse

Description

シーン内のコライダーに対してレイを飛ばし、ヒットした情報を取得します

	function Update () {
		var fwd = transform.TransformDirection (Vector3.forward);
		if (Physics.Raycast (transform.position, fwd, 10)) {
			print ("There is something in front of the object!");
		}
	}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Update() {
        Vector3 fwd = transform.TransformDirection(Vector3.forward);
        if (Physics.Raycast(transform.position, fwd, 10))
            print("There is something in front of the object!");
        
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	def Update() as void:
		fwd as Vector3 = transform.TransformDirection(Vector3.forward)
		if Physics.Raycast(transform.position, fwd, 10):
			print('There is something in front of the object!')

注意: この関数は球の中から外に向けてレイキャストすると false を返しますが、 それは意図通りの動作です。 If you move colliders from scripting or by animation, there needs to be at least one FixedUpdate executed so that the physics library can update it's data structures, before a Raycast will hit the collider at it's new position.

Parameters

Returns

bool レイが任意のコライダーと交わる場合はtrue、それ以外はfalse

Description

シーン内の全てのコライダーに対してレイを飛ばし、ヒットした情報を取得します

	function Update () {
		var hit : RaycastHit;
		if (Physics.Raycast (transform.position, -Vector3.up, hit)) {
			var distanceToGround = hit.distance;
		}
	}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Update() {
        RaycastHit hit;
        if (Physics.Raycast(transform.position, -Vector3.up, out hit))
            float distanceToGround = hit.distance;
        
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	def Update() as void:
		hit as RaycastHit
		if Physics.Raycast(transform.position, -Vector3.up, ):
			distanceToGround as float = hit.distance

他の例:

	// Raycast up to 100 meters down

	function Update () {
		var hit : RaycastHit;
		if (Physics.Raycast (transform.position, -Vector3.up, hit, 100.0)) {
			var distanceToGround = hit.distance;
		}
	}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Update() {
        RaycastHit hit;
        if (Physics.Raycast(transform.position, -Vector3.up, out hit, 100.0F))
            float distanceToGround = hit.distance;
        
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	def Update() as void:
		hit as RaycastHit
		if Physics.Raycast(transform.position, -Vector3.up, , 100.0F):
			distanceToGround as float = hit.distance

Parameters

Returns

bool レイが任意のコライダーと交わる場合はtrue、それ以外はfalse

Description

上記と同様ですが /ray.origin/ と /ray.direction/ を、 origin および direction の代わりに使用します

function Update() {
	var ray = Camera.main.ScreenPointToRay (Input.mousePosition);

	if (Physics.Raycast (ray, 100)) {
		print ("Hit something");
	}
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Update() {
        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        if (Physics.Raycast(ray, 100))
            print("Hit something");
        
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	def Update() as void:
		ray as Ray = Camera.main.ScreenPointToRay(Input.mousePosition)
		if Physics.Raycast(ray, 100):
			print('Hit something')

Parameters

Returns

bool レイが任意のコライダーと交わる場合はtrue、それ以外はfalse

Description

上記と同様ですが /ray.origin/ と /ray.direction/ を、 origin および direction の代わりに使用します

function Update() {
	var ray = Camera.main.ScreenPointToRay (Input.mousePosition);
	var hit : RaycastHit;
	if (Physics.Raycast (ray, hit, 100)) {
		Debug.DrawLine (ray.origin, hit.point);
	}
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Update() {
        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        RaycastHit hit;
        if (Physics.Raycast(ray, out hit, 100))
            Debug.DrawLine(ray.origin, hit.point);
        
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	def Update() as void:
		ray as Ray = Camera.main.ScreenPointToRay(Input.mousePosition)
		hit as RaycastHit
		if Physics.Raycast(ray, , 100):
			Debug.DrawLine(ray.origin, hit.point)