Computer_Graphics_Laboratory/06.TeaPot.cpp at master · vtucs/Computer_Graphics_Laboratory · GitHub

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/*
6. To draw a simple shaded scene consisting of a tea pot on a table. Define suitably
the position and properties of the light source along with the properties of the
surfaces of the solid object used in the scene.
*/

#include<stdio.h>
#include<math.h>
#include<glut.h>

void myInit();
void drawTable();
void display();

void myInit()
{
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glOrtho(-100, 200, -100, 200, -200, 200);
	glMatrixMode(GL_MODELVIEW);
}

void drawTable()
{
	// Table Top
	glPushMatrix();
	glColor3f(0, 1, 0);
	glTranslatef(50, 40, -50);
	glScalef(50, 5, 50);
	glutSolidCube(1);
	glPopMatrix();

	// 1st leg
	glPushMatrix();
	glColor3f(1, 1, 0);
	glTranslatef(30, 20, -30);
	glScalef(5, 35, 5);
	glutSolidCube(1);
	glPopMatrix();

	// 2nd leg
	glPushMatrix();
	glColor3f(1, 1, 0);
	glTranslatef(70, 20, -30);
	glScalef(5, 35, 5);
	glutSolidCube(1);
	glPopMatrix();

	// 3rd leg
	glPushMatrix();
	glColor3f(1, 1, 0);
	glTranslatef(30, 20, -70);
	glScalef(5, 35, 5);
	glutSolidCube(1);
	glPopMatrix();

	// 4th leg
	glPushMatrix();
	glColor3f(1, 1, 0);
	glTranslatef(70, 20, -70);
	glScalef(5, 35, 5);
	glutSolidCube(1);
	glPopMatrix();

	// Floor
	glPushMatrix();
	glColor3f(1, 0, 1);
	glTranslatef(50, 0, -50);
	glScalef(100, 5, 100);
	glutSolidCube(1);
	glPopMatrix();

	// Left wall
	glPushMatrix();
	glColor3f(1, 0, 0);
	glRotatef(90, 0, 0, 1);
	glTranslatef(50, 0, -50);
	glScalef(100, 5, 100);
	glutSolidCube(1);
	glPopMatrix();

	// Backside wall
	glPushMatrix();
	glColor3f(1, 0, 0);
	glTranslatef(50, 50, -100);
	glScalef(100, 100, 5);
	glutSolidCube(1);
	glPopMatrix();

	// Tea pot
	glPushMatrix();
	glTranslatef(50, 50, -50);
	glRotatef(30, 0, 1, 0);
	glutSolidTeapot(10);
	glPopMatrix();
}

void display()
{
	glClearColor(0, 0, 0, 1);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	GLfloat mat_ambient[] = { .7,.7,.7,1 };
	GLfloat mat_diffuse[] = { .5,.5,.5,1 };
	GLfloat mat_spec[] = { 1,1,1,1 };
	GLfloat mat_shininess[] = { 50 };

	glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
	glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
	glMaterialfv(GL_FRONT, GL_SPECULAR, mat_spec);
	glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);

	GLfloat light_int[] = { .7,.7,.7,1 };
	GLfloat lightpos[] = { 100,100,100 };
	glLightfv(GL_LIGHT0, GL_POSITION, lightpos);
	glLightfv(GL_LIGHT0, GL_DIFFUSE, light_int);

	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	gluLookAt(25, 25, 50, 0, 0, -25, 0, 1, 0);
	glMatrixMode(GL_MODELVIEW);
	drawTable();
	glFlush();
}

int main()
{
	glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);
	glutInitWindowSize(500, 500);
	glutInitWindowPosition(100, 100);
	glutCreateWindow("Tea Pot");
	myInit();
	glutDisplayFunc(display);
	glEnable(GL_LIGHTING);
	glEnable(GL_LIGHT0);
	glShadeModel(GL_SMOOTH);
	glEnable(GL_NORMALIZE);
	glEnable(GL_DEPTH_TEST);
	glutMainLoop();
}