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Programming and Scripting => C - C++ => Topic started by: Zer0Flag on September 02, 2011, 11:57:16 PM

Title: [C]OpenGLDemo.1
Post by: Zer0Flag on September 02, 2011, 11:57:16 PM

Hey ,

I played a bit with OpenGL and here is the result. First time that I coded with OpenGL so don***180;t freak out if its worse :).
http://www.youtube.com/watch?v=MmvviVVdkzE (http://www.youtube.com/watch?v=MmvviVVdkzE)

Code: [Select]

//Zer0Flag @ drunken-nanomites.org

#include <Windows.h>
#include <gl/GL.h>
#include <gl/GLU.h>
#include <GL/glut.h>
#include <iostream>
#include <time.h>

using namespace std;

float fRotation[20] = { 0.0f };
float fKoordSize = 60.0f;
float fJump = 0.0f;

time_t ExecutionTime = NULL;

void changeSize(int iWidth, int iHeight) {
if (iHeight <= 0)
{
iHeight = 1;
}

float ratio =  iWidth / iHeight;

glViewport(0, 0, iWidth, iHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f, ratio, 0.1f, 100.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}

void renderScene(void) {
Sleep(50);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

time_t CurrentTime = time(NULL);
long ullCurrentTicks = CurrentTime - ExecutionTime;

if (ullCurrentTicks <= 11)
{
switch (ullCurrentTicks)
{
case 1:
for ( int Ix = 0 ; Ix <= 4; Ix += 4)
{
for ( int Iy = 0; Iy <= 4; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
case 2:
for ( int Ix = 0 ; Ix <= 8; Ix += 4)
{
for ( int Iy = 0; Iy <= 8; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
case 3:
for ( int Ix = 0 ; Ix <= 12; Ix += 4)
{
for ( int Iy = 0; Iy <= 12; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
case 4:
for ( int Ix = 0 ; Ix <= 16; Ix += 4)
{
for ( int Iy = 0; Iy <= 16; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
case 5:
for ( int Ix = 0 ; Ix <= 20; Ix += 4)
{
for ( int Iy = 0; Iy <= 20; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
case 6:
for ( int Ix = 0 ; Ix <= 24; Ix += 4)
{
for ( int Iy = 0; Iy <= 24; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
case 7:
for ( int Ix = 0 ; Ix <= 28; Ix += 4)
{
for ( int Iy = 0; Iy <= 28; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
case 8:
for ( int Ix = 0 ; Ix <= 32; Ix += 4)
{
for ( int Iy = 0; Iy <= 32; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
case 9:
for ( int Ix = 0 ; Ix <= 36; Ix += 4)
{
for ( int Iy = 0; Iy <= 36; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
case 10:
for ( int Ix = 0 ; Ix <= 40; Ix += 4)
{
for ( int Iy = 0; Iy <= 40; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
case 11:
for ( int Ix = 0 ; Ix <= 44; Ix += 4)
{
for ( int Iy = 0; Iy <= 44; Iy += 4)
{
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef(((fKoordSize/2) - 8)* (-1) + Ix,((fKoordSize/2) - 8)* (-1) + Iy,0);
glutWireCube(2.0);
}
}
break;
}
}
if (ullCurrentTicks > 11 && ullCurrentTicks <= 18)
{
int i = 0;

for ( int Ix = 0 ; Ix <= 60 ; Ix += 4)
{
for(int Iy = 0 ; Iy <= 60 ; Iy += 4)
{
fJump = (((rand() % 8) + 1 ));
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef((fKoordSize/2 * (-1)) + Ix,(fKoordSize/2 * (-1)) + Iy,fJump);
glutWireCube(2.0);
}
}
}
if (ullCurrentTicks > 18 && ullCurrentTicks <= 25)
{
int i = 0;

for ( int Ix = 0 ; Ix <= 60 ; Ix += 4)
{
for(int Iy = 0 ; Iy <= 60 ; Iy += 4)
{
fJump = (((rand() % 8) + 1 ));
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
glTranslatef((fKoordSize/2 * (-1)) + Ix,(fKoordSize/2 * (-1)) + Iy,fJump);
glRotatef(fRotation[i],1.0f,1.0f,0.0f);
glutWireCube(2.0);

fRotation[i++] += 1.0f;
}
}
}
if (ullCurrentTicks > 25 && ullCurrentTicks <= 32)
{
int i = 0;

for ( int Ix = 0 ; Ix <= 60 ; Ix += 4)
{
for(int Iy = 0 ; Iy <= 60 ; Iy += 4)
{
fJump = (((rand() % 8) + 1 ));
glLoadIdentity();
glEnable(GL_DEPTH_TEST);
gluLookAt(0.0f, 0.0f,fKoordSize,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);

switch ((((rand() % 30) + 10) /10))
{
case 1:
glColor3f(0.5f,0.0f,0.0f);
break;
case 2:
glColor3f(0.0f,0.5f,0.0f);
break;
case 3:
glColor3f(0.0f,0.0f,0.8f);
break;
}

glTranslatef((fKoordSize/2 * (-1)) + Ix,(fKoordSize/2 * (-1)) + Iy,fJump);
glRotatef(fRotation[i],1.0f,1.0f,0.0f);
glutWireCube(2.0);

fRotation[i++] += 1.0f;
}
}
}
if(ullCurrentTicks > 32)
{

}
glutSwapBuffers();
}

void processNormalKeys(unsigned char key, int x, int y) {
if (key == 27) // Exit on ESC
{
exit(0);
}
}

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

ExecutionTime = time(NULL);


glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
glutInitWindowPosition(100,100);
glutInitWindowSize(320,320);
glutCreateWindow("OpenGL Tests");

glutDisplayFunc(renderScene);
glutReshapeFunc(changeSize);
glutIdleFunc(renderScene);

glutKeyboardFunc(processNormalKeys);

glutMainLoop();
}
~0

Title: Re: [C]OpenGLDemo.1
Post by: ande on September 03, 2011, 12:56:23 AM

Pretty good, I tried openGL a few years back. Couldn't do more than draw a square on the screen ;)

Title: Re: [C]OpenGLDemo.1
Post by: Huntondoom on September 13, 2011, 11:49:18 PM

sorry I have never used OpenGl, how did you install it? (sorry for the noobis question)
I checked the site but I saw so much things to download. I just don't now where to start...

Title: Re: [C]OpenGLDemo.1
Post by: Kulverstukas on September 14, 2011, 07:19:15 AM

Quote from: Huntondoom on September 13, 2011, 11:49:18 PM

<..>(sorry for the noobis question) <..>

God.. people should STOP admitting that they are "noobs" and calling themselves names. Everyone is equal and everyone has more experience then the other in some other fields and not just coding :(

Title: Re: [C]OpenGLDemo.1
Post by: iMorg on September 18, 2011, 03:34:41 AM

Quote from: Huntondoom on September 13, 2011, 11:49:18 PM

sorry I have never used OpenGl, how did you install it? (sorry for the noobis question)
I checked the site but I saw so much things to download. I just don't now where to start...

Using glut is pretty much the easiest way to start writing opengl software. You just download the library, put the headers into your compilers "gl" header path and have your project link to the libraries.

This will get you started
http://www.gamedev.net/page/resources/_/reference/programming/sweet-snippets/basics-of-glut-r1680 (http://www.gamedev.net/page/resources/_/reference/programming/sweet-snippets/basics-of-glut-r1680)

v1 of the opengl red book is also available online if you dont want to go download the new editions.

Title: Re: [C]OpenGLDemo.1
Post by: Huntondoom on September 18, 2011, 10:21:11 AM

Quote from: iMorg on September 18, 2011, 03:34:41 AM

Using glut is pretty much the easiest way to start writing opengl software. You just download the library, put the headers into your compilers "gl" header path and have your project link to the libraries.

This will get you started
http://www.gamedev.net/page/resources/_/reference/programming/sweet-snippets/basics-of-glut-r1680 (http://www.gamedev.net/page/resources/_/reference/programming/sweet-snippets/basics-of-glut-r1680)

v1 of the opengl red book is also available online if you dont want to go download the new editions.

Thank you very much!

Title: Re: [C]OpenGLDemo.1
Post by: john_engit on December 01, 2011, 11:04:57 AM

awesome  :)

Title: Re: [C]OpenGLDemo.1
Post by: PublicEnemy on December 01, 2011, 08:04:22 PM

Quote from: Kulverstukas on September 14, 2011, 07:19:15 AM

God.. people should STOP admitting that they are "noobs"

Exactly, don't call yourself a noob - that is my job.