The document contains code for two OpenGL computer graphics assignments. The first assignment code draws a single yellow square in the center of the window. The second assignment code draws two overlapping squares - a red square taking up the entire window and a smaller yellow square in the center. Both assignments initialize an OpenGL window and rendering context and call display and main functions to set up and run the OpenGL program.

1. COMPUTER GRAPHICS
Practical # 1
Ass: 1
#include <GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glBegin(GL_QUADS);
glColor3f(1.0f, 1.0f, 0.0f);
glVertex2f(-0.9f, 0.2f);
glVertex2f(-0.4f, 0.2f);
glVertex2f(-0.4f, 0.7f);
glVertex2f(-0.9f, 0.7f);
glEnd();
glFlush();
}
void main(int argc, char** argv)
{
glutInit(&argc, argv);
glutCreateWindow("SQUARE");
glutInitWindowSize(320, 320);
glutInitWindowPosition(10,10);
glutDisplayFunc(display);
glutMainLoop();
}
OUTPUT
1

2. COMPUTER GRAPHICS
Practical # 1
Ass: 2
#include <GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glBegin(GL_QUADS);
glColor3f(1.0f, 0.0f, 0.0f);
glVertex2f(-0.8f, -0.8f);
glVertex2f( 0.8f, -0.8f);
glVertex2f( 0.8f, 0.8f);
glVertex2f(-0.8f, 0.8f);
glColor3f(1.0f, 1.0f, 0.0f);
glVertex2f(-0.3f, -0.3f);
glVertex2f( 0.3f, -0.3f);
glVertex2f( 0.3f, 0.3f);
glVertex2f(-0.3f, 0.3f);
glEnd();
glFlush();
}
void main(int argc, char** argv)
{
glutInit(&argc, argv);
glutCreateWindow("OpenGL Setup Test");
glutInitWindowSize(320, 320);
glutInitWindowPosition(50, 50);
glutDisplayFunc(display);
glutMainLoop();
}
OUTPUT
2