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3DBezierSurface.cpp
资源名称：Jhy3D.rar　[点击查看]
上传用户：eehhbb
上传日期：2022-08-03
资源大小：2550k
文件大小：3k
源码类别：

OpenGL

开发平台：

Visual C++

3DBezierSurface.cpp：源码内容
  1. // 3DBezierSurface.cpp: implementation of the C3DBezierSurface class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  5. #include "stdafx.h"
  6. #include "jhy3d.h"
  7. #include "3DBezierSurface.h"
  8. #include "Material.h"
  9. #include "Vector3.h"
  10. #include "glglut.h"
  12. #ifdef _DEBUG
  13. #undef THIS_FILE
  14. static char THIS_FILE[]=__FILE__;
  15. #define new DEBUG_NEW
  16. #endif
  18. //////////////////////////////////////////////////////////////////////
  19. // Construction/Destruction
  20. //////////////////////////////////////////////////////////////////////
  22. C3DBezierSurface::C3DBezierSurface()
  23. {
  24. m_position.m_x = m_position.m_y = m_position.m_z = 0.0f;
  25. m_pCtrlPoints = NULL;
  26. m_nNumOFVCtrl = m_nNumOFUCtrl = 0;
  27. }
  29. C3DBezierSurface::~C3DBezierSurface()
  30. {
  32. }
  34. void C3DBezierSurface::DestroyBezierSurface()
  35. {
  36. if(m_pCtrlPoints)
  37. {
  38. delete[] m_pCtrlPoints;
  39. m_pCtrlPoints = NULL;
  40. }
  41. }
  43. void C3DBezierSurface::DefaultBezierSuf()
  44. {
  45. if(m_pCtrlPoints)
  46. {
  47. DestroyBezierSurface();
  48. }
  49. m_nNumOFVCtrl = m_nNumOFUCtrl = 4;
  50. m_pCtrlPoints = new float[m_nNumOFUCtrl*m_nNumOFVCtrl*3];
  51. m_pCtrlPoints[0] = -0.1875; m_pCtrlPoints[1] = -0.1875; m_pCtrlPoints[2] = 0.5;
  52. m_pCtrlPoints[3] = -0.0625; m_pCtrlPoints[4] = -0.1875; m_pCtrlPoints[5] = 0.25;
  53. m_pCtrlPoints[6] = 0.0625;  m_pCtrlPoints[7] = -0.1875; m_pCtrlPoints[8] = -0.125;
  54. m_pCtrlPoints[9] = 0.1875;  m_pCtrlPoints[10] = -0.1875;m_pCtrlPoints[11] = 0.25;
  55. m_pCtrlPoints[12] = -0.1875;m_pCtrlPoints[13]=-0.0625;  m_pCtrlPoints[14] = 0.125;
  56. m_pCtrlPoints[15] = -0.0625;m_pCtrlPoints[16]=-0.0625; m_pCtrlPoints[17]=0.375;
  57. m_pCtrlPoints[18]=0.0625;  m_pCtrlPoints[19]=-0.0625;  m_pCtrlPoints[20]=0.0;
  58. m_pCtrlPoints[21]=0.1875;  m_pCtrlPoints[22]=-0.0625;  m_pCtrlPoints[23]=-0.125;
  59. m_pCtrlPoints[24]=-0.1875; m_pCtrlPoints[25]=0.0625;  m_pCtrlPoints[26]= 0.5;
  60. m_pCtrlPoints[27]=-0.0625; m_pCtrlPoints[28]=0.0625;  m_pCtrlPoints[29]=0.0;
  61. m_pCtrlPoints[30]=0.0625;  m_pCtrlPoints[31]=0.0625;  m_pCtrlPoints[32]=0.375;
  62. m_pCtrlPoints[33]=0.1875;  m_pCtrlPoints[34]=0.0625;  m_pCtrlPoints[35]=0.5;
  63. m_pCtrlPoints[36]=-0.1875; m_pCtrlPoints[37]=0.1875;  m_pCtrlPoints[38]=-0.25;
  64. m_pCtrlPoints[39]=-0.0625; m_pCtrlPoints[40]=0.1875;  m_pCtrlPoints[41]=-0.25;
  65. m_pCtrlPoints[42]=0.0625;  m_pCtrlPoints[43]=0.1875;  m_pCtrlPoints[44]=0.0;
  66. m_pCtrlPoints[45]=0.1875;  m_pCtrlPoints[46]=0.1875;  m_pCtrlPoints[47]=-0.125;
  68. }
  70. void C3DBezierSurface::RenderTextureSolidBeizerSurface()
  71. {
  72. if(m_pCtrlPoints == NULL)
  73. return;
  74. float sTexCoords[2][2][2] = {{{0.0,0.0},{0.0,1.0}},{{1.0,1.0}}};
  76. glEnable(GL_MAP2_VERTEX_3);
  77. glEnable(GL_MAP2_TEXTURE_COORD_2);
  78. glEnable(GL_AUTO_NORMAL);
  79. glEnable(GL_NORMALIZE);
  81. glMaterialfv(GL_FRONT,GL_AMBIENT,m_matBezier.m_vAmbient);
  82. glMaterialfv(GL_FRONT,GL_DIFFUSE,m_matBezier.m_vDiffuse);
  83. glMaterialfv(GL_FRONT,GL_SPECULAR,m_matBezier.m_vSpecular);
  84. glMaterialf(GL_FRONT,GL_SHININESS,m_matBezier.m_vShininess);
  85. glMaterialfv(GL_FRONT,GL_EMISSION,m_matBezier.m_vEmission);
  86. glPushMatrix();
  87. glTranslatef(m_position.m_x,m_position.m_y,m_position.m_z);
  88. glMap2f(GL_MAP2_VERTEX_3,0,1,3,m_nNumOFUCtrl,0,1,m_nNumOFUCtrl * 3,m_nNumOFVCtrl,m_pCtrlPoints);
  89. glMap2f(GL_MAP2_TEXTURE_COORD_2,0,1,2,2,0,1,4,2,&sTexCoords[0][0][0]);
  91. glMapGrid2f(20,0,1,20,0,1);
  92. glEvalMesh2(GL_FILL,0,20,0,20);
  93. glPopMatrix();
  94. glDisable(GL_AUTO_NORMAL);
  95. glDisable(GL_NORMALIZE);
  96. }