• Advertisement
Sign in to follow this  

Please help me

This topic is 4723 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

i copied and pasted this code into dev c++ bloodshed and tried to compile it but i got errors. Can u tell me if there is any newbish adjustments i have to make and/or if you need the errors i had, thanks here is the code:
// This code was created by Jeff Molofee '99 (ported to Linux/GLUT by Richard Campbell '99)
// If you've found this code useful, please let me know.
// Visit me at www.demonews.com/hosted/nehe 
// (email Richard Campbell at ulmont@bellsouth.net)
#include <GL/glut.h>    // Header File For The GLUT Library 
#include <GL/gl.h> // Header File For The OpenGL32 Library
#include <GL/glu.h> // Header File For The GLu32 Library
#include <unistd.h>     // Header File For sleeping.

/* ASCII code for the escape key. */
#define ESCAPE 27

/* The number of our GLUT window */
int window; 

/* rotation angle for the triangle. */
float rtri = 0.0f;

/* rotation angle for the quadrilateral. */
float rquad = 0.0f;
float pos=0; // Triangle position
/* A general OpenGL initialization function.  Sets all of the initial parameters. */
void InitGL(int Width, int Height)         // We call this right after our OpenGL window is created.
  glClearColor(1.0f, 0.0f, 0.0f, 0.0f);  // This Will Clear The Background Color To Black
  glClearDepth(1.0);    // Enables Clearing Of The Depth Buffer
  glDepthFunc(GL_LESS);    // The Type Of Depth Test To Do
  glEnable(GL_DEPTH_TEST);   // Enables Depth Testing
  glShadeModel(GL_SMOOTH);   // Enables Smooth Color Shading

  glLoadIdentity();    // Reset The Projection Matrix

  gluPerspective(45.0f,(GLfloat)Width/(GLfloat)Height,0.1f,100.0f); // Calculate The Aspect Ratio Of The Window


/* The function called when our window is resized (which shouldn't happen, because we're fullscreen) */
void ReSizeGLScene(int Width, int Height)
  if (Height==0)    // Prevent A Divide By Zero If The Window Is Too Small

  glViewport(0, 0, Width, Height);  // Reset The Current Viewport And Perspective Transformation



/* The main drawing function. */
void DrawGLScene()

  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);  // Clear The Screen And The Depth Buffer
  glLoadIdentity();    // Reset The View

  glTranslatef(-1.5f + pos,0.0f,-6.0f);  // Move Left 1.5 Units And Into The Screen 6.0
  glRotatef(rtri,0.0f,1.0f,0.0f);  // Rotate The Triangle On The Y axis 
  // draw a triangle (in smooth coloring mode)
  glBegin(GL_POLYGON);    // start drawing a polygon
  glColor3f(1.0f,0.0f,0.0f);   // Set The Color To Red
  glVertex3f( 0.0f, 1.0f, 0.0f);  // Top
  glColor3f(0.0f,1.0f,0.0f);   // Set The Color To Green
  glVertex3f( 1.0f,-1.0f, 0.0f);  // Bottom Right
  glColor3f(0.0f,0.0f,1.0f);   // Set The Color To Blue
  glVertex3f(-1.0f,-1.0f, 0.0f);  // Bottom Left 
  glEnd();     // we're done with the polygon (smooth color interpolation)

  glLoadIdentity();    // make sure we're no longer rotated.
  glTranslatef(1.5f,0.0f,-6.0f);  // Move Right 3 Units, and back into the screen 6.0
  glRotatef(rquad,1.0f,0.0f,0.0f);  // Rotate The Quad On The X axis 
  // draw a square (quadrilateral)
  glColor3f(0.5f,0.5f,1.0f);   // set color to a blue shade.
  glBegin(GL_QUADS);    // start drawing a polygon (4 sided)
  glVertex3f(-1.0f, 1.0f, 0.0f);  // Top Left
  glVertex3f( 1.0f, 1.0f, 0.0f);  // Top Right
  glVertex3f( 1.0f,-1.0f, 0.0f);  // Bottom Right
  glVertex3f(-1.0f,-1.0f, 0.0f);  // Bottom Left 
  glEnd();     // done with the polygon

  rtri+=1.0f;     // Increase The Rotation Variable For The Triangle
  rquad-=1.0f;     // Decrease The Rotation Variable For The Quad 

  // swap the buffers to display, since double buffering is used.
void idle()
/* The function called whenever a key is pressed. */
void keyPressed(unsigned char key, int x, int y) 
    /* sleep to avoid thrashing this procedure */

    /* If escape is pressed, kill everything. */
 //pos = (GLfloat)x/(GLfloat)y;
 if (key == '3')
  pos += 0.1;
 if(key == '2')
  pos -= 0.1;
    if (key == ESCAPE) 
 /* shut down our window */
 /* exit the program...normal termination. */

int main(int argc, char **argv) 
  /* Initialize GLUT state - glut will take any command line arguments that pertain to it or 
     X Windows - look at its documentation at http://reality.sgi.com/mjk/spec3/spec3.html */  
  glutInit(&argc, argv);  

  /* Select type of Display mode:   
     Double buffer 
     RGBA color
     Alpha components supported 
     Depth buffer */  

  /* get a 640 x 480 window */
  glutInitWindowSize(640, 480);  

  /* the window starts at the upper left corner of the screen */
  glutInitWindowPosition(0, 0);  

  /* Open a window */  
  window = glutCreateWindow("Jeff Molofee's GL Code Tutorial ... NeHe '99");  

  /* Register the function to do all our OpenGL drawing. */

  /* Go fullscreen.  This is as soon as possible. */

  /* Even if there are no events, redraw our gl scene. */

  /* Register the function called when our window is resized. */

  /* Register the function called when the keyboard is pressed. */

  /* Initialize our window. */
  InitGL(640, 480);
  /* Start Event Processing Engine */  

  return 1;

Share this post

Link to post
Share on other sites
Sign in to follow this  

  • Advertisement