exam8-6.rar_opengl_opengl vc

#include <windows.h> #include <gl/gl.h> #include <gl/glu.h> #include <gl/glut.h> // NURBS对象指针 GLUnurbsObj *pNurb1 = NULL; GLUnurbsObj *pNurb2 = NULL; GLfloat ctrlPoints[5][5][3]= { {{-3,0.5,0},{-1,1.5,0},{-2,2,0},{1,-1,0},{-5,0,0}}, {{-3,0.5,-1},{ -1,1.5,-1},{-2,2,-1},{1,-1,-1},{-5,0,-1}}, {{-3,0.5,-2},{ -1,1.5,-2},{-2,2,-2},{1,-1,-2},{-5,0,-2}}, {{-3,0.5,-3},{ -1,1.5,-3},{-2,2,-3},{1,-1,-3},{-5,0,-3}}, {{-3,0.5,-4},{ -1,1.5,-4},{-2,2,-4},{1,-1,-4},{-5,0,-4}}}; GLfloat mat_diffuse[] = {1.0f, 0.5f, 0.1f, 1.0f }; GLfloat mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f}; GLfloat mat_shininess[] = { 100.0f }; GLfloat light_position[] = { 0.0f, -10.0f, 0.0f, 1.0f}; GLfloat Knots[10] = {0.0f,0.0f,0.0f,0.0f,0.0f,1.0f,1.0f,1.0f,1.0f,1.0f}; int spin = 0; void Initial() { glClearColor(1.0f, 1.0f, 1.0f, 1.0f ); glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse); glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess); glLightfv(GL_FRONT, GL_POSITION, light_position); glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glDepthFunc(GL_LEQUAL); glEnable(GL_DEPTH_TEST); glEnable(GL_AUTO_NORMAL); glEnable(GL_NORMALIZE); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE); glEnable(GL_BLEND); glFrontFace(GL_CCW); glShadeModel(GL_SMOOTH); glEnable(GL_LINE_SMOOTH); pNurb1 = gluNewNurbsRenderer(); gluNurbsProperty(pNurb1, GLU_SAMPLING_TOLERANCE, 25.0f); gluNurbsProperty(pNurb1, GLU_DISPLAY_MODE, (GLfloat)GLU_OUTLINE_POLYGON); pNurb2 = gluNewNurbsRenderer(); gluNurbsProperty(pNurb2, GLU_SAMPLING_TOLERANCE, 25.0f); gluNurbsProperty(pNurb2, GLU_DISPLAY_MODE, (GLfloat)GLU_FILL); } static void Key(unsigned char key, int x, int y) { switch(key){ case 'd': spin = spin +1; glRotatef(spin, 1.0f, 1.0f, 0.0f); glutPostRedisplay(); break; case 27: exit(0); default: break; } } void ReDraw(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glRotatef(50.0f, 1.0f,1.0f,0.0f); //绘制第一个曲面 glPushMatrix(); glTranslatef(1.0f,0.0f,0.0f); gluBeginSurface(pNurb1); gluNurbsSurface(pNurb1, // NURBS对象指针 10, // 参数化u方向上的结点数目 Knots, // 参数化u方向上递增的结点值的数组 10, // 参数化v方向上的结点数目 Knots, // 参数化v方向上递增的结点值的数组 5 * 3, // 参数化u方向上相邻控制点之间的偏移量 3, // 参数化v方向上相邻控制点之间的偏移量 &ctrlPoints[0][0][0], // 包含曲面控制点的数组 5, // 参数化u方向上的阶数 5, // 参数化v方向上的阶数 GL_MAP2_VERTEX_3); // 曲面的类型 gluEndSurface(pNurb1); glPopMatrix(); //绘制第二个曲面 glPushMatrix(); glTranslatef(7.0f,0.0f,0.0f); gluBeginSurface(pNurb2); gluNurbsSurface(pNurb2, // NURBS对象指针 10, // 参数化u方向上的结点数目 Knots, // 参数化u方向上递增的结点值的数组 10, // 参数化v方向上的结点数目 Knots, // 参数化v方向上递增的结点值的数组 5 * 3, // 参数化u方向上相邻控制点之间的偏移量 3, // 参数化v方向上相邻控制点之间的偏移量 &ctrlPoints[0][0][0], // 包含曲面控制点的数组 5, // 参数化u方向上的阶数 5, // 参数化v方向上的阶数 GL_MAP2_VERTEX_3); // 曲面的类型 gluEndSurface(pNurb2); glPopMatrix(); glutSwapBuffers(); } void ChangeSize(int w, int h) { if(h == 0) h = 1; glViewport(0, 0, w, h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective (50.0f, (GLdouble)w/(GLdouble)h, 1.0, 15.0f); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glTranslatef (0.0f, 0.0f, -9.0f); } int main(int argc, char* argv[]) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); glutInitWindowSize(600,400); glutInitWindowPosition(200,200); glutCreateWindow("NURBS曲面"); glutReshapeFunc(ChangeSize); glutDisplayFunc(ReDraw); glutKeyboardFunc(Key); Initial(); glutMainLoop(); return 0; }