sphere2.c
上传用户:xk288cn
上传日期:2007-05-28
资源大小:4876k
文件大小:2k
- /* Copyright (c) Mark J. Kilgard, 1994. */
- /* This program is freely distributable without licensing fees
- and is provided without guarantee or warrantee expressed or
- implied. This program is -not- in the public domain. */
- #include <GL/glut.h>
- GLfloat light_diffuse[] =
- {1.0, 0.0, 0.0, 1.0};
- GLfloat light_position[] =
- {1.0, 1.0, 1.0, 0.0};
- GLUquadricObj *qobj;
- void
- display(void)
- {
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glCallList(1); /* render sphere display list */
- glutSwapBuffers();
- }
- void
- gfxinit(void)
- {
- qobj = gluNewQuadric();
- gluQuadricDrawStyle(qobj, GLU_FILL);
- glNewList(1, GL_COMPILE); /* create sphere display list */
- gluSphere(qobj, /* radius */ 1.0, /* slices */ 20,
- /* stacks */ 20);
- glEndList();
- glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
- glLightfv(GL_LIGHT0, GL_POSITION, light_position);
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- glEnable(GL_DEPTH_TEST);
- glMatrixMode(GL_PROJECTION);
- gluPerspective( /* field of view in degree */ 40.0,
- /* aspect ratio */ 1.0,
- /* Z near */ 1.0, /* Z far */ 10.0);
- glMatrixMode(GL_MODELVIEW);
- gluLookAt(0.0, 0.0, 5.0, /* eye is at (0,0,5) */
- 0.0, 0.0, 0.0, /* center is at (0,0,0) */
- 0.0, 1.0, 0.); /* up is in positive Y direction */
- glTranslatef(0.0, 0.0, -1.0);
- }
- int
- main(int argc, char **argv)
- {
- glutInit(&argc, argv);
- glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
- glutCreateWindow("sphere");
- glutDisplayFunc(display);
- gfxinit();
- glutCreateWindow("a second window");
- glutDisplayFunc(display);
- gfxinit();
- glutMainLoop();
- return 0; /* ANSI C requires main to return int. */
- }