Simple Solar System in OpenGL

I have created a simple Solar System using OpenGL


#include <stdlib.h>
#include <GLUT/glut.h>
#include <math.h>
#include <stdio.h>

static float Xvalue = 0.0, Yvalue = 0.0, Angle = 0.0;

int MoveX = 0;
int MoveY = 0;

void myInit(void) {
glClearColor (0.0, 0.0, 0.0, 0.0);
}


static float x1[360][2];
static float x2[360][2];
static float x3[720][2];


void generateCircle()
{
int i = 0;

for(i=0; i <= 360; i++)
{
x1[i][0] = sin(i*3.1416/180)*3;
x1[i][1] = cos(i*3.1416/180)*3;
}

for(i=0; i <= 360; i++)
{
x2[i][0] = sin(i*3.1416/180)*1;
x2[i][1] = cos(i*3.1416/180)*1;
}

for(i=0; i <= 720; i++)
{
x3[i][0] = sin(i*3.1416/180)*5;
x3[i][1] = cos(i*3.1416/180)*5;
}

}




void myDisplay(void) {

glClear (GL_COLOR_BUFFER_BIT);
glColor3f (1.0, 1.0, 1.0);

//sun
glPushMatrix();
gluLookAt (0.0, 10.0, 2.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0);
glTranslatef(Xvalue, 0.0, Yvalue);
glRotatef(Angle, 0.0, 0.0, 1.0);
glutWireSphere (0.5, 15, 15);
glPopMatrix();

glPushMatrix();
gluLookAt (0.0, 10.0, 2.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0);
if(MoveX==360)
MoveX = 0;
glTranslatef(x1[MoveX][1], x1[MoveX][0], 0.0);
glRotatef(Angle, 0.0, 0.0, 1.0);
glutWireSphere (0.4, 15, 15);
glTranslatef(x2[MoveX][0], x2[MoveX][1], 0.0);
glutWireSphere (0.2, 15, 15);
glPopMatrix();

glPushMatrix();
gluLookAt (0.0, 10.0, 2.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0);
if(MoveY==720)
MoveY = 0;
glTranslatef(x3[MoveY/2][1], x3[MoveY/2][0], 0.0);
glRotatef(Angle, 0.0, 0.0, 1.0);
glutWireSphere (0.4, 15, 15);
int i = 0;
//glBegin(GL_LINE_STRIP);
glBegin(GL_QUAD_STRIP);
for(i=0; i <= 360; i++)
{
glVertex3f(sin(i*3.1416/180)*0.5, cos(i*3.1416/180)*0.5, 0 );
glVertex3f(sin(i*3.1416/180)*0.7, cos(i*3.1416/180)*0.7, 0 );
}
glEnd();
glRotatef(Angle, 0.0, 0.0, 1.0);
glPopMatrix();

glFlush ();
}


void resize(int w, int h)
{
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
glFrustum (-1.0, 1.0, -1.0, 1.0, 1.5, 20.0);
glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
}


void animation()
{
Angle += 15.0;
glutPostRedisplay();
MoveX +=1;
MoveY +=1;
glutPostRedisplay();
glutTimerFunc(100, animation, 0);

}


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

glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize(1024, 768);
glutInitWindowPosition(100, 150);
glutCreateWindow("OpenGL");
myInit();
glutDisplayFunc(myDisplay);
glutReshapeFunc(resize);
generateCircle();
glutTimerFunc(100, animation, 0);
glutMainLoop();
}


Comments

  1. yes my teacher had same problem compiling in windows gluttimerfunc.

    One of my friend used custom “thread” to do same functionality like gluttimerfunc.

  2. I wanted to map a texture onto the planets using bmp or raw files…i googled four days but couldn’t find any codes… can you please write one on your blog.. or extend ur same program with texture mapping…and can u also explain how the functions using sin cos work in ur prog..atleast give a good site to study those pls..

  3. i'm unable to work with the timer function can any body help me??n also wanted to create textures also but not sure with the functions so i'm struck here

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