#define GLUT_DISABLE_ATEXIT_HACK
#include <Windows.h>
#include <math.h>
#include <gl/GL.h>
#include <gl/GLU.h>
#include <gl/GLAux.h>
void init();
void CALLBACK reshape(GLsizei w,GLsizei h);
void CALLBACK display();
GLfloat s,h;
void CALLBACK display()
{
glClearColor(1,1,1,1);
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();
gluLookAt(5,5,h,s,0,0,0,1,0);
glColor3f(0,0,0);
GLfloat RAD=0.07145;
GLfloat x,y,z,r;
int i,j;
for (i=0;i<180;i+=5)
{
glBegin(GL_LINE_LOOP);
r=2*sin(i*RAD);
z=2*cos(i*RAD);
for (j=0;j<360;j+=10)
{
x=r*cos(j*RAD);
y=r*sin(j*RAD);
glVertex3f(x,y,z);
}
glEnd();
}
for (j=0;j<360;j+=10)
{
glBegin(GL_LINE_LOOP);
for (i=0;j<=180;i+=10)
{
r=2*sin(i*RAD);
z=2*cos(i*RAD);
x=2*cos(i*RAD);
y=2*sin(i*RAD);
glVertex3f(x,y,z);
}
glEnd();
}
glFlush();
}
void init()
{
glShadeModel(GL_FLAT);
s=0;
h=5;
}
void CALLBACK reshape(GLsizei w,GLsizei h)
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(30,1,-3,3);
glMatrixMode(GL_MODELVIEW);
glViewport(0,0,w,h);
}
void CALLBACK Left()
{
s+=0.1;
}
void CALLBACK Right()
{
s-=0.1;
}
void CALLBACK Up()
{
h-=0.1;
}
void CALLBACK Down()
{
h+=0.1;
}
void main()
{
auxInitDisplayMode(AUX_SINGLE|AUX_RGB);
auxInitPosition(0,0,300,300);
auxInitWindow(TEXT("OpenGL Demo"));
init();
auxKeyFunc(AUX_LEFT,Left);
auxKeyFunc(AUX_RIGHT,Right);
auxKeyFunc(AUX_UP,Up);
auxKeyFunc(AUX_DOWN,Down);
auxReshapeFunc(reshape);
auxMainLoop(display);
}
