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Vector3.cpp
Package: 虚拟地形建模.rar　[view]
Upload User: dfjhuyju
Upload Date: 2013-03-13
Package Size: 11035k
Code Size: 1k
Category:

OpenGL program

Development Platform:

Visual C++

Vector3.cpp：Code Content
  1. // Vector3.cpp: implementation of the CVector3 class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  5. #include "stdafx.h"
  6. #include "LiFeng.h"
  7. #include "Vector3.h"
  8. #include <math.h>
  10. #ifdef _DEBUG
  11. #undef THIS_FILE
  12. static char THIS_FILE[]=__FILE__;
  13. #define new DEBUG_NEW
  14. #endif
  16. //////////////////////////////////////////////////////////////////////
  17. // Construction/Destruction
  18. //////////////////////////////////////////////////////////////////////
  20. CVector3::CVector3()
  21. {
  23. }
  25. CVector3::~CVector3()
  26. {
  28. }
  31. CVector3 Cross(CVector3 vVector1, CVector3 vVector2)
  32. {
  33. CVector3 vNormal;
  36. vNormal.x = ((vVector1.y * vVector2.z) - (vVector1.z * vVector2.y));
  37. vNormal.y = ((vVector1.z * vVector2.x) - (vVector1.x * vVector2.z));
  38. vNormal.z = ((vVector1.x * vVector2.y) - (vVector1.y * vVector2.x));
  41. return vNormal;  
  42. }
  46. float Magnitude(CVector3 vNormal)
  47. {
  48. return (float)sqrt( (vNormal.x * vNormal.x) + 
  49. (vNormal.y * vNormal.y) + 
  50. (vNormal.z * vNormal.z) );
  51. }
  55. CVector3 Normalize(CVector3 vVector)
  56. {
  58. float magnitude = Magnitude(vVector);
  60. vVector = vVector / magnitude;
  62. return vVector;
  63. }