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09.27.2007 at 06:50AM PDT, ID: 22856599
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7.4

Rotating an OpenGL primitive around its centre

Asked by vishalchavda in OpenGL Graphics & Game Programming, 3D Game Programming, C Programming Language

Tags: , ,

I am rendering OpenGL primitives on a Java Canvas but using C to call OpenGL functions.
I can display a primitive shape eg a box in the centre (axis 0,0,0) and when i rotate it, it rotates around the axis i.e. (0,0,0). I now translate the box in the X axis say (1,0,0), the box is now displayed at that position, when i rotate it, the box rotates around the axis with the translation in x.
What I want to do is after i have translated the box (1,0,0) I want to select the box and then rotate around the centre of the Box and not the axis, thus if i had several primitives and i clicked one of them, the rotation point shouldl be from the centre point of that primitive and all the other primitives move in relation to this.Start Free Trial
[+][-]09.27.2007 at 01:03PM PDT, ID: 19974327

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[+][-]09.27.2007 at 01:13PM PDT, ID: 19974378

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[+][-]09.28.2007 at 12:23AM PDT, ID: 19976932

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[+][-]09.28.2007 at 12:30AM PDT, ID: 19976945

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[+][-]09.28.2007 at 06:53AM PDT, ID: 19978635

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About this solution

Zones: OpenGL Graphics & Game Programming, 3D Game Programming, C Programming Language
Tags: opengl, rotate, around
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Solution Provided By: ikework
Participating Experts: 3
Solution Grade: A
 
 
[+][-]09.29.2007 at 01:41AM PDT, ID: 19983359

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[+][-]10.21.2007 at 03:12PM PDT, ID: 20119472

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[+][-]12.17.2007 at 11:41PM PST, ID: 20490468

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