void myDisplay(void)
{
int i;
double FPS = CalFrequency();
printf("FPS = %f\n", FPS);
glClear(GL_COLOR_BUFFER_BIT);
// 创建透视效果视图
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(90.0f, 1.7f, 10.0f, 2000.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0.0, 0.0, 0.0, 0.0, 0.0, -500.0, 0.0, 1.0, 0.0);
glBegin(GL_TRIANGLES);
glVertex3f(0.0f, 0.0f, -200.0f);
glVertex3f(100.0f, 0.0f, -200.0f);
glVertex3f(100.0f, 100.0f, -200.0f);
glEnd();
glFlush();
glutSwapBuffers();
}
void myDisplay(void)
{
double FPS = CalFrequency();
printf("FPS = %f\n", FPS);
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(75, 1, 1, 400000000);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0, -200000000, 200000000, 0, 0, 0, 0, 0, 1);
// 绘制红色的“太阳”
glColor3f(1.0f, 0.0f, 0.0f);
glutSolidSphere(69600000, 20, 20);
// 绘制蓝色的“地球”
glColor3f(0.0f, 0.0f, 1.0f);
glRotatef(day / 360.0*360.0, 0.0f, 0.0f, -1.0f);
glTranslatef(150000000, 0.0f, 0.0f);
glutSolidSphere(15945000, 20, 20);
// 绘制黄色的“月亮”
glColor3f(1.0f, 1.0f, 0.0f);
glRotatef(day / 30.0*360.0 - day / 360.0*360.0, 0.0f, 0.0f, -1.0f);
glTranslatef(38000000, 0.0f, 0.0f);
glutSolidSphere(4345000, 20, 20);
glFlush();
glutSwapBuffers();
}
void display_FPS()
{
float x=-5,y=5,FS=1;
int fps=CalFrequency();
int thousand=fps/1000;
int hundred=(fps-thousand*1000)/100;
int ten=(fps-thousand*1000-hundred*100)/10;
int one=(fps-thousand*1000-hundred*100-ten*10)/1;
//printf("fps=%f fps2=%d%d%d%d\n",CalFrequency(),thousand,hundred,ten,one);
char c_thousand=thousand+48;
char c_hundred=hundred+48;
char c_ten=ten+48;
char c_one=one+48;
glColor3f(1, 1, 1);
float gap=FS/6;
printc('F', x, y, FS);
x=x+gap;
printc('P', x, y, FS);
x=x+gap;
printc('S', x, y, FS);
x=x+gap;
printc(' ', x, y, FS);
x=x+gap;
printc('=', x, y, FS);
x=x+gap;
printc(' ', x, y, FS);
x=x+gap;
printc(c_thousand, x, y, FS);
x=x+gap;
printc(c_hundred, x, y, FS);
x=x+gap;
printc(c_ten, x, y, FS);
x=x+gap;
printc(c_one, x, y, FS);
x=x+gap;
printc(' ', x, y, FS);
x=x+gap;
prints("Ver.beta", x, y, FS);
glFlush();
}
