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afCamera.cpp
资源名称：AirForce.rar　[点击查看]
上传用户：kaiguan
上传日期：2007-10-28
资源大小：1074k
文件大小：3k
源码类别：

其他游戏

开发平台：

Visual C++

afCamera.cpp：源码内容
  1. // afCamera.cpp: implementation of the afCamera class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  4. #include "afCamera.h"
  5. #include "afPlane.h"
  6. //////////////////////////////////////////////////////////////////////
  7. // Construction/Destruction
  8. //////////////////////////////////////////////////////////////////////
  10. //-----------------------------------------------------------------------------
  11. // Name:
  12. // Desc:
  13. //-----------------------------------------------------------------------------
  14. afCamera::afCamera()
  15. {
  16.     // Set attributes for the view matrix
  17.     D3DXVECTOR3 vEyePt(0.0f,0.0f,0.0f);
  18.     D3DXVECTOR3 vLookatPt(0.0f,0.0f,1.0f);
  19.     D3DXVECTOR3 vUpVec(0.0f,1.0f,0.0f);
  20.     SetViewParams( vEyePt, vLookatPt, vUpVec );
  22.     // Set attributes for the projection matrix
  23.     SetProjParams( D3DX_PI/4, 1.0f, 1.0f, 1000.0f );
  25. }
  28. //-----------------------------------------------------------------------------
  29. // Name:
  30. // Desc:
  31. //-----------------------------------------------------------------------------
  32. VOID afCamera::SetViewParams( D3DXVECTOR3 &vEyePt, D3DXVECTOR3& vLookatPt,
  33.                                 D3DXVECTOR3& vUpVec )
  34. {
  35.     // Set attributes for the view matrix
  36.     m_vEyePt    = vEyePt;
  37.     m_vLookatPt = vLookatPt;
  38.     m_vUpVec    = vUpVec;
  39.     D3DXVECTOR3 vDir = m_vLookatPt - m_vEyePt;
  40.     D3DXVec3Normalize( &m_vView, &vDir );
  41.     D3DXVec3Cross( &m_vCross, &m_vView, &m_vUpVec );
  43.     D3DXMatrixLookAtLH( &m_matView, &m_vEyePt, &m_vLookatPt, &m_vUpVec );
  44.     D3DXMatrixInverse( &m_matBillboard, NULL, &m_matView );
  45.     m_matBillboard._41 = 0.0f;
  46.     m_matBillboard._42 = 0.0f;
  47.     m_matBillboard._43 = 0.0f;
  48. }
  53. //-----------------------------------------------------------------------------
  54. // Name:
  55. // Desc:
  56. //-----------------------------------------------------------------------------
  57. VOID afCamera::SetProjParams( FLOAT fFOV, FLOAT fAspect, FLOAT fNearPlane,
  58.                                    FLOAT fFarPlane )
  59. {
  60.     // Set attributes for the projection matrix
  61.     m_fFOV        = fFOV;
  62.     m_fAspect     = fAspect;
  63.     m_fNearPlane  = fNearPlane;
  64.     m_fFarPlane   = fFarPlane;
  66.     D3DXMatrixPerspectiveFovLH( &m_matProj, fFOV, fAspect, fNearPlane, fFarPlane );
  67. }
  70. bool afCamera::getUpdateVisibility()
  71. {
  72. return m_updateVisibility;
  73. }
  75. void afCamera::SetUpdateVisibility(bool visible)
  76. {
  77. m_updateVisibility=visible;
  78. }
  80. void afCamera::createClippingPlanes(afPlane nPlanes[6])
  81. {
  82. float nx,ny,nz;
  84. // near plane
  85. nPlanes[0].set(0.0f, 0.0f, -1.0f, -m_fNearPlane);
  86. // far plane
  87. nPlanes[1].set(0.0f, 0.0f, 1.0f, m_fFarPlane);
  89. nx = (float)cos(GetFOVX()/2.0f);
  90. nz = (float)sin(GetFOVX()/2.0f);
  91. // right plane
  92. nPlanes[2].set(nx, 0.0f, -nz, 0.0f);
  93. // left plane
  94. nPlanes[3].set(-nx, 0.0f, -nz, 0.0f);
  96. ny = (float)cos(GetFOVY()/2.0f);
  97. nz = (float)sin(GetFOVY()/2.0f);
  98. // up plane
  99. nPlanes[4].set(0.0f, ny, -nz, 0.0f);
  100. // down plane
  101. nPlanes[5].set(0.0f, -ny, -nz, 0.0f);
  102. }