helix.c
上传用户:xk288cn
上传日期:2007-05-28
资源大小:4876k
文件大小:1k
- /*
- * helicoid (gernalized torus) demo
- *
- * FUNCTION:
- * This code provides a very simple example of the helicoid primitive.
- * Most of this code is required to set up OpenGL and GLUT, and very
- * very little to set up the helix drawer. Don't blink!
- *
- * HISTORY:
- * Written by Linas Vepstas, March 1995
- */
- /* required include files */
- #include <GL/glut.h>
- #include <GL/tube.h>
- /* most recent mouse postion */
- extern float lastx;
- extern float lasty;
- void InitStuff (void) {
- lastx = 121.0;
- lasty = 121.0;
- }
- /* draw the helix shape */
- void DrawStuff (void) {
- glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glColor3f (0.6, 0.8, 0.3);
- /* set up some matrices so that the object spins with the mouse */
- glPushMatrix ();
- glTranslatef (0.0, 0.0, -80.0);
- glRotatef (lastx, 0.0, 1.0, 0.0);
- glRotatef (lasty, 1.0, 0.0, 0.0);
- /* Phew. FINALLY, Draw the helix -- */
- gleSetJoinStyle (TUBE_NORM_EDGE | TUBE_JN_ANGLE | TUBE_JN_CAP);
- gleHelicoid (1.0, 6.0, 2.0, -3.0, 4.0, 0x0, 0x0, 0.0, 1080.0);
- glPopMatrix ();
- glutSwapBuffers ();
- }
- /* ------------------------- end of file ----------------- */