CG and Visualisation Lab(10CSL67) Vtu prg-4

/* Lab Program 4 */Â/* Program to create a house like figure and rotate it about a given fixed point using OpenGL functions */

#include

#include

void myinit() {

glClearColor(1.0,1.0,1.0,1.0);

glColor3f(1.0,0.0,0.0);

glPointSize(20.0);

glMatrixMode(GL_PROJECTION);

glLoadIdentity();

gluOrtho2D(0.0,1024.0,0.0,700.0);

glMatrixMode(GL_MODELVIEW);

} void house() {

glBegin(GL_LINE_LOOP);

glVertex2i(120,60);

glVertex2i(350,60);

glVertex2i(350,280);

glVertex2i(120,280);

glEnd();

glBegin(GL_LINE_LOOP);

glVertex2i(195,60);

glVertex2i(290,60);

glVertex2i(290,200);

glVertex2i(195,200);

glEnd();

glBegin(GL_LINE_LOOP);

glVertex2i(120,280);

glVertex2i(350,280);

glVertex2i(240,350);

glEnd();

}

static GLfloat theta[]={0.0,0.0,0.0};

static GLint axis=0;

void display() {

glClear(GL_COLOR_BUFFER_BIT);

glLoadIdentity();

glRotatef(theta[0],0.0,0.0,1.0);

house();

glFlush();

}

void rotate() {

theta[axis]+=20.0;

}

void main(int argc,char **argv) {

glutInit(&argc,argv);

glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);

glutInitWindowSize(500,500);

glutCreateWindow("House");

glutDisplayFunc(display);

glutIdleFunc(rotate);

myinit();

glutMainLoop();

}

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