3: 2015-03-30 (月) 03:42:37 osinko  |
現: - no date - |
| - | TITLE:正射影 | |
| - | #jsmath | |
| - | #contents | |
| - | **正射影 [#ad6e31b3] | |
| - | \(\mathbf{a}\)に\(\mathbf{b}\)を射影した\(\mathbf{p}\)を求めたい。この場合の射影ベクトルを求める式は以下になる | |
| - | &font(Red){\(\mathbf{ p }=\frac { \mathbf{a}\cdot \mathbf{b} }{ \mathbf{a}\cdot \mathbf{a} } \mathbf{a}\)}; | |
| | | | |
| - | #code(csharp){{ | |
| - | using UnityEngine; | |
| - | using System.Collections; | |
| - | | |
| - | public class projection1 : MonoBehaviour | |
| - | { | |
| - | Vector3 a, b, proj, proj2; | |
| - | | |
| - | void Start () | |
| - | { | |
| - | a = new Vector3 (10, 4); | |
| - | b = new Vector3 (3, 7); | |
| - | | |
| - | proj = Vector3.Project (b, a); | |
| - | proj2 = (Vector3.Dot (a, b) / Vector3.Dot (a, a)) * a; | |
| - | | |
| - | print ("正射影unity標準機能＝" + proj + " 正射影自分で計算＝" + proj2); | |
| - | } | |
| - | } | |
| - | }} | |
| - | | |
| - | **証明 [#ndfd6147] | |
![[PukiWiki]](http://unitylabo.s601.xrea.com/xoops/modules/xpwiki/image/pukiwiki.png "[PukiWiki]")
