View Profile: Carmine - OpenGL Discussion and Help Forums

Today, 03:27 PM

Carmine replied to a thread drawing an arrow: A line + a cone (problems with the cone, rotation!) in OpenGL coding: beginners

Yes. You could do this with some vector cross products, normalization, etc.

4 replies | 99 view(s)

Today, 10:53 AM

Carmine replied to a thread drawing an arrow: A line + a cone (problems with the cone, rotation!) in OpenGL coding: beginners

I've run your code and had slightly better results than you. The cone does show up when I do glMultMatrixf (mat44). But it is not oriented or...

4 replies | 99 view(s)

Yesterday, 05:05 PM

Carmine replied to a thread Detection of edge of a polygon in Math and Algorithms

The end vertices of a cylinder do lie in a plane, even if it's not a right, circular, cylinder. Sounds like you have some tube-like structures. Are...

5 replies | 143 view(s)

Yesterday, 04:17 PM

Carmine replied to a thread Detection of edge of a polygon in Math and Algorithms

The angle between the top and bottom faces of a cylinder and the side faces are 90 degs, which is far more than 10 degs. I assume you have...

5 replies | 143 view(s)

Yesterday, 01:31 PM

Carmine replied to a thread Detection of edge of a polygon in Math and Algorithms

What do you mean by 'sharp edge'? I can think of two interpretations: 1) the poly does not share this edge with any other polys, or 2) the angle...

5 replies | 143 view(s)

Yesterday, 01:19 PM

Carmine replied to a thread How to animate so the ball keeps on moving and how to scale per keyboard input in OpenGL coding: beginners

Look for examples of glutTimerFunc with Google.

5 replies | 190 view(s)

Yesterday, 10:49 AM

Carmine replied to a thread How to animate so the ball keeps on moving and how to scale per keyboard input in OpenGL coding: beginners

This is too vague. What happens when you run this? Do you get any graphics at all? Do you know if your TimerFunc is even getting called? Use...

5 replies | 190 view(s)

12-28-2012, 04:30 PM

Carmine replied to a thread glutKeyboardFunc with glutTimerFunc problem in OpenGL coding: beginners

Assuming the 'normalKeys' function really does work, all you should have to do is - void TimerFunc (int value) { ballZpos = ballZpos -...

2 replies | 198 view(s)

12-26-2012, 11:24 AM

Carmine replied to a thread Need some help in OpenGL coding: beginners

Opening two 'panels', as you call them is very easy in OpenGL. For example, it could be done using 2 windows, or 1 window divided into two viewports....

7 replies | 547 view(s)

12-26-2012, 10:59 AM

Carmine replied to a thread Need urgent help with moving ball in OpenGL coding: beginners

int main (int argc, char* argv) { glutInit (&argc, argv); glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); ...

10 replies | 677 view(s)

12-23-2012, 10:38 PM

Carmine replied to a thread 3D Game - When any arrow key is pressed the screen goes smaller then dissapears in Math and Algorithms

What you are doing is different from what I'm doing. You are sort of lucky that your way works. It's a good idea to initialize the matrix stack...

3 replies | 398 view(s)