Question

Write a program in c/c++ using opengl to draw a house

Answer 1

/**

* Title : Build a House in C++ using OpenGL(House.cpp)

* Program Description : Write a C++ program to build a house using OpenGL 2D Graphics in C++.

* Author : robustprogramming.com

* Interface : Console

* Library : OpenGL

* IDE : Code::Blocks 13.12

* Operating System : Windows 8.1

*/

#include<Windows.h> // for MS Windows

#include<GL\glut.h> // GLUT, include glu.h and gl.h

//Note: GLglut.h path depending on the system in use

void init()

{

// Set display window color to as glClearColor(R,G,B,Alpha)

glClearColor(0.5, 0.9, 0.4, 0.0);

// Set projection parameters.

glMatrixMode(GL_PROJECTION);

// Set 2D Transformation as gluOrtho2D(Min Width, Max Width, Min Height, Max Height)

gluOrtho2D(0.0, 800, 0.0, 600);

}

void home()

{

//Roof

glClear(GL_COLOR_BUFFER_BIT); // Clear display window

// Set line segment color as glColor3f(R,G,B)

glColor3f(0.3, 0.5, 0.8);

glBegin(GL_POLYGON);

glVertex2i(200, 500);

glVertex2i(600, 500);

glVertex2i(700, 350);

glVertex2i(300, 350);

glEnd();

// Top of Front Wall

glColor3f(0.1, 0.5, 0.0);

glBegin(GL_TRIANGLES);

glVertex2i(200, 500);

glVertex2i(100, 350);

glVertex2i(300, 350);

glEnd();

// Front Wall

glColor3f(0.7, 0.2, 0.3);

glBegin(GL_POLYGON);

glVertex2i(100, 350);

glVertex2i(300, 350);

glVertex2i(300, 100);

glVertex2i(100, 100);

glEnd();

// Front Door

glColor3f(0.7, 0.2, 0.9);

glBegin(GL_POLYGON);

glVertex2i(150, 250);

glVertex2i(250, 250);

glVertex2i(250, 100);

glVertex2i(150, 100);

glEnd();

// Front Door Lock

glColor3f(0.3, 0.7, 0.9);

glPointSize(15);

glBegin(GL_POINTS);

glVertex2i(170, 170);

glEnd();

//side Wall

glColor3f(0.1, 0.2, 0.3);

glBegin(GL_POLYGON);

glVertex2i(300, 350);

glVertex2i(700, 350);

glVertex2i(700, 100);

glVertex2i(300, 100);

glEnd();

// window one

glColor3f(0.2, 0.4, 0.3);

glBegin(GL_POLYGON);

glVertex2i(330, 320);

glVertex2i(450, 320);

glVertex2i(450, 230);

glVertex2i(330, 230);

glEnd();

// line of window one

glColor3f(0.1, 0.7, 0.5);

glLineWidth(5);

glBegin(GL_LINES);

glVertex2i(390, 320);

glVertex2i(390, 230);

glVertex2i(330, 273);

glVertex2i(450, 273);

glEnd();

// window two

glColor3f(0.2, 0.4, 0.3);

glBegin(GL_POLYGON);

glVertex2i(530, 320);

glVertex2i(650, 320);

glVertex2i(650, 230);

glVertex2i(530, 230);

glEnd();

// lines of window two

glColor3f(0.1, 0.7, 0.5);

glLineWidth(5);

glBegin(GL_LINES);

glVertex2i(590, 320);

glVertex2i(590, 230);

glVertex2i(530, 273);

glVertex2i(650, 273);

glEnd();

// Entrance Path

glColor3f(0.3, 0.5, 0.7);

glLineWidth(3);

glBegin(GL_POLYGON);

glVertex2i(150, 100);

glVertex2i(250, 100);

glVertex2i(210, 0);

glVertex2i(40, 0);

glEnd();

// Process all OpenGL routine s as quickly as possible

glFlush();

}

int main(int argc, char ** argv)

{

// Initialize GLUT

glutInit(&argc, argv);

// Set display mode

glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);

// Set top - left display window position.

glutInitWindowPosition(100, 100);

// Set display window width and height

glutInitWindowSize(800, 600);

// Create display window with the given title

glutCreateWindow("2D House in OpenGL ");

// Execute initialization procedure

init();

// Send graphics to display window

glutDisplayFunc(home);

// Display everything and wait.

glutMainLoop();

}

Answer 2

Answer:

India is a parliamentary Democratic Republic in which the President of India is the head of state and the Prime Minister of India is the head of government. It is based on the federal structure of government although the word is not used in the constitution itself.

Explanation:

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