solar system animation in 3D in c language using openGL

Solar system animation in 3D

Tool used:

1)Visual studio 2017

2) language used: c

3) library used for graphics : openGL

In this project we have main file called "source.cpp". It consist of code as shown below:

	//necessary headerfile
	#include <stdio.h>
	#include <string.h>
	#include <math.h>
	#include <time.h>
	#include "GL/glut.h"
	#include "b.h"
	// necessary variable declaration and initialization
	bool one = false;
	static float rotx = 0.0;
	static float worldX = 15.0;
	static float worldY = 0.0;
	static float scaleFactor = 0.6;
	static bool animate = false;
	static float first = 1;
	static float second = 1;
	point stars[500];
	int globalW, globalH;
	float speed = 0.5;
	// for text display
	void keimeno(const char *str, float size){
	glPushMatrix();
	glScalef(size, size, size);
	for(int i = 0; i < strlen(str); i++)
	glutStrokeCharacter(GLUT_STROKE_ROMAN, str[i]);
	glPopMatrix();
	}
	void Render(){
	//CLEARS FRAME BUFFER ie COLOR BUFFER& DEPTH BUFFER (1.0)
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	glTranslatef(0, 0, -500);
	if (!animate) {
	glPushMatrix();
	glDisable(GL_LIGHTING);
	glDisable(GL_LIGHT0);
	glColor3f(1, 1, 1);
	glTranslatef(-8, 250, 0.0);
	keimeno("Paused", 0.1f);
	glPopMatrix();
	}
	glEnable(GL_LIGHTING);
	glEnable(GL_LIGHT0);
	GLUquadricObj *quadric;
	quadric = gluNewQuadric();
	gluQuadricDrawStyle(quadric, GLU_FILL);
	gluDeleteQuadric(quadric);
	glScalef(scaleFactor, scaleFactor, scaleFactor);
	glRotatef(worldX, 1, 0, 0);
	glRotatef(worldY, 0, 1, 0);
	glDisable(GL_LIGHTING);
	glPushMatrix();
	glColor3f(0.8, 0.498039, 0.196078);
	gluSphere(quadric, 15, 36, 18);
	glColor3f(1, 1, 0);
	glEnable(GL_BLEND);
	glBlendFunc(first, second);
	gluSphere(quadric, 35, 36, 18);
	glDisable(GL_BLEND);
	glPopMatrix();
	glEnable(GL_LIGHTING);
	GLfloat light_position[] = { 0.0, 0.0, 0.0,1 };
	glLightfv(GL_LIGHT0, GL_POSITION, light_position);
	GLfloat light_diff[] = { 1.0, 1.0, 1.0, 1.0 };
	glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diff);
	GLfloat light_amb[] = { 0.0, 0.0, 0.0, 1.0 };
	glLightfv(GL_LIGHT0, GL_AMBIENT, light_amb);
	glPushMatrix(); //1 planet
	glRotatef(rotx*speed *1.9, 0, 1, 0);
	glTranslatef(40, 0, -100.0);
	glRotatef(rotx, 1, 0, 0);
	glColor3f(1, 0.1, 0.6);
	gluSphere(quadric, 17, 36, 18);
	glPopMatrix();
	glPushMatrix();// 2 planet
	glRotatef(rotx*speed * 1.8, 0, 1, 0);
	glTranslatef(-200, 0.0, -150);
	glRotatef(rotx, 0, 0, 1);
	glColor3f(1, 0.1, 0.29);
	gluSphere(quadric, 10, 16, 18);
	glPopMatrix();
	glPushMatrix();// 3 planet
	glRotatef(rotx* speed *1.7, 0, 1, 0);
	glTranslatef(-60, 0, -200.0);
	glRotatef(rotx, 1, 0, 0);
	glColor3f(1, 0, 0);
	gluSphere(quadric, 17, 36, 18);
	glPopMatrix();
	glPushMatrix();// 4 planet
	glRotatef(rotx*speed * 1.6, 0, 1, 0);
	glTranslatef(20, 0, -250.0);
	glRotatef(rotx, 1, 0, 0);
	glColor3f(0.1, 0.6, 0.9);
	gluSphere(quadric, 17, 36, 18);
	glPopMatrix();
	glPushMatrix();// 5 planet
	glRotatef(rotx *speed * 1.4, 0, 1, 0);
	glTranslatef(-30, 0, -300.0);
	glRotatef(rotx, 1, 0, 0);
	glColor3f(1, 0.7, 0.3);
	gluSphere(quadric, 13, 36, 8);
	glPopMatrix();
	glPushMatrix();// 6 planet
	glRotatef(rotx *speed * 1.3, 0, 1, 0);
	glTranslatef(20, 0, -350.0);
	glRotatef(rotx, 1, 0, 0);
	glColor3f(0.5, 0, 0.5);
	gluSphere(quadric, 17, 36, 18);
	glPopMatrix();
	glPushMatrix();// 7 planet
	glRotatef(rotx *speed * 1.5, 0, 1, 0);
	glTranslatef(-30, 0, -400.0);
	glRotatef(rotx, 1, 0, 0);
	glColor3f(0.3, 0.8, 0);
	gluSphere(quadric, 13, 36, 8);
	glPopMatrix();
	glPushMatrix();// 8 planet
	glRotatef(rotx *speed *1.2, 0, 1, 0);
	glTranslatef(-30, 0, -450.0);
	glRotatef(rotx, 1, 0, 0);
	glColor3f(0.5, 0.5, 0.5);
	gluSphere(quadric, 13, 36, 8);
	glPopMatrix();
	DrawStars();
	glutSwapBuffers(); // All drawing commands applied to the
	// hidden buffer, so now, bring forward
	// the hidden buffer and hide the visible one
	}
	//-----------------------------------------------------------
	void Resize(int w, int h)
	{
	// define the visible area of the window ( in pixels )
	if (h == 0) h = 1;
	glViewport(0, 0, w, h);
	globalH = h;
	globalW = w;
	// Setup viewing volume
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluPerspective(60.0, (float)w / (float)h, 1.0, 1000.0);
	}
	void Idle()
	{
	if (animate)
	rotx += 1.1;
	glutPostRedisplay();
	}
	void Keyboard(unsigned char key, int x, int y)
	{
	switch (key)
	{
	case 'q': exit(0);
	break;
	case 'w': if (animate) worldX -= 1.0f;
	break;
	case 's': if (animate) worldX += 1.0f;
	break;
	case 'a': if (animate) worldY -= 1.0f;
	break;
	case 'd': if (animate) worldY += 1.0f;
	break;
	case ' ': animate = !animate;
	break;
	default: break;
	}
	glutPostRedisplay();
	}
	void Setup() // TOUCH IT !!
	{
	//get random cordinates for the stars
	for (int i = 0; i < 500; i++)
	RandomCoordinates(&stars[i]);
	srand(time(0));
	//Parameter handling
	glShadeModel(GL_SMOOTH);
	glEnable(GL_DEPTH_TEST);
	// polygon rendering mode
	glEnable(GL_COLOR_MATERIAL);
	glColorMaterial(GL_FRONT, GL_AMBIENT_AND_DIFFUSE);
	// Black background
	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
	}
	void RandomCoordinates(point *star)
	{
	int lowest = -1000, highest = 1000;
	int range = (highest - lowest) + 1;
	star->x = lowest + int(range*rand() / (RAND_MAX + 1.0));
	star->y = lowest + int(range*rand() / (RAND_MAX + 1.0));
	star->z = lowest + int(range*rand() / (RAND_MAX + 1.0));
	}
	void DrawStars()
	{
	GLUquadricObj *quadric;
	quadric = gluNewQuadric();
	gluQuadricDrawStyle(quadric, GLU_FILL);
	gluDeleteQuadric(quadric);
	for (int i = 0; i < 500; i++) {
	glPushMatrix();
	glTranslatef(stars[i].x, stars[i].y, stars[i].z);
	glColor3f(1, 1, 1);
	gluSphere(quadric, 1, 36, 18);
	glPopMatrix();
	}
	}

view raw sss3dsource.html hosted with ❤ by GitHub

Now we made custom header file named "b.h", and  "b.cpp"  file for defining header file function.
the source code for these file is also given as:

b.cpp source code:

	#include <math.h>
	#include "GL/glut.h"
	#include <stdio.h>
	#include <string.h>
	#include "b.h"
	// Header file for our OpenGL functions
	int main(int argc, char* argv[])
	{
	// initialize GLUT library state
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_RGBA | GLUT_DEPTH | GLUT_DOUBLE);
	// Define the main window size and initial position
	glutInitWindowSize(800, 800);
	glutInitWindowPosition(50, 50);
	// Create and label the main window
	glutCreateWindow("Solar system");
	// Configure various properties of the OpenGL rendering context
	Setup();
	// Callbacks for the GL and GLUT events:
	// The rendering function
	glutDisplayFunc(Render);
	glutReshapeFunc(Resize);
	glutIdleFunc(Idle);
	glutKeyboardFunc(Keyboard);
	//Enter main event handling loop
	glutMainLoop();
	return 0;
	}

view raw sss3dbccp.html hosted with ❤ by GitHub

b.h source code:

	struct point{
	float x;
	float y;
	float z;
	};
	struct face {
	int vtx[3];
	};
	extern int globalW, globalH;
	//-------- Functions --------------------------------
	void Render();
	// The function responsible for drawing everything in the
	// OpenGL context associated to a window.
	void Resize(int w, int h);
	// Handle the window size changes and define the world coordinate
	// system and projection type
	void Setup();
	// Set up the OpenGL state machine and create a light source
	void Idle();
	void Keyboard(unsigned char key, int x, int y);
	//functin for handling mouse whell event
	void RandomCoordinates(point*);
	void DrawStars();

view raw sss3dbh.html hosted with ❤ by GitHub