Orxan

#include<gl/glut.h>
#include<math.h>

double tx=0,ty=0,tz=0;
double sx=1,sy=1,sz=1;
double angle=0.0;
void myDisplay(){
    glClear(GL_COLOR_BUFFER_BIT);
    int number = 35;
    float radius = 35;
    float twopi = 3.1452423*2;
    glMatrixMode(GL_MODELVIEW);
    glLineStipple(5, 0xAAAA);

    glLoadIdentity();
    glTranslatef(tx,ty,tz);
    glScalef(sx,sy,sz);
    glRotatef(angle,0.0,0.0,1.0);
    gluLookAt(0.0,0.0,100.0, 0.0,0.0,0.0, 0.0,1.0,0.0);

        glBegin(GL_QUADS);
			glColor3f(1.0,1.0,1.0);
			glVertex2f(-40.0, 40.0);
			glVertex2f (40.0, 40.0);
			glVertex2f(40.0, -40.0);
			glVertex2f (-40.0, -40.0);
        glEnd();

        glBegin (GL_LINES);
			glColor3f(1.0,1.0,1.0);
			glVertex2f(150.0, 100.0);
			glVertex2f (-150.0, -100.0);
			glEnd();
        glFlush();

}

void pressToClipp (unsigned char press, int x, int y){
if(press=='c'){

    glBegin (GL_LINES);
			glColor3f(0.1,0.0,0.1);
			glVertex2f(150.0, 100.0);
			glVertex2f (-150.0, -100.0);
			glEnd();
    glFlush();
	}

}

void myReshape(int w,int h){
    glViewport(0,0,(GLsizei)w,(GLsizei)h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(60.0,(GLfloat)w/h,1.0,100.0);
    glMatrixMode(GL_MODELVIEW);

}
int main(int argc, char *argv[]){
    glutInit( & argc, argv );
    glutCreateWindow("Clipping Algortihm");

    glutDisplayFunc(myDisplay);
    glutKeyboardFunc (pressToClipp);
    glutReshapeFunc(myReshape);
    glutMainLoop();
}