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我刚学OPENGL不久,试着根据例子改了个立方体的线筐旋转的程序,但旋转速度好象太快了,是我编的有问题还是就这样,代码如下
#include <GL/glut.h>
#include <stdlib.h>
static GLfloat i=0.0;
void init(void)
{
glClearColor (0.0, 0.0, 0.0, 0.0);
glShadeModel (GL_FLAT);
}
void display(void)
{
glClear (GL_COLOR_BUFFER_BIT);
glColor3f (1.0, 1.0, 1.0);
glRotatef(i,0.0,1.0,0.0);
i=i+1.0;/*控制旋转角度*/
if(i>360.0)
i=i-360.0;
glutWireCube (1.0);
glutSwapBuffers();
glutPostRedisplay();
}
void reshape (int w, int h)
{
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
glFrustum (-1.0, 1.0, -1.0, 1.0, 1.5, 20.0);
glMatrixMode (GL_MODELVIEW);
}
void keyboard(unsigned char key, int x, int y)
{
switch (key) {
case 27:
exit(0);
break;
}
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize (500, 500);
glutInitWindowPosition (100, 100);
glutCreateWindow (argv[0]);
init ();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutKeyboardFunc(keyboard);
glLoadIdentity ();
gluLookAt (0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
glScalef (1.0, 2.0, 1.0);
glutMainLoop();
return 0;
}
核心部分就是
void display(void)
{
glClear (GL_COLOR_BUFFER_BIT);
glColor3f (1.0, 1.0, 1.0);
glRotatef(i,0.0,1.0,0.0);
i=i+1.0;/*控制旋转角度*/
if(i>360.0)
i=i-360.0;
glutWireCube (1.0);
glutSwapBuffers();
glutPostRedisplay();
}
请各位帮忙看一下,谢了 |
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