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  • Committer: Bazaar Package Importer
  • Author(s): M G Berberich
  • Date: 2010-05-25 21:20:21 UTC
  • mto: (1.1.2 upstream)
  • mto: This revision was merged to the branch mainline in revision 6.
  • Revision ID: james.westby@ubuntu.com-20100525212021-g2sk0ukjkyr4ebkt
Import upstream version 0.2.2

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examples/cube/vmath.c
 
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#include <math.h>
 
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#include "vmath.h"
 
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quat_t quat_rotate(quat_t q, float angle, float x, float y, float z)
 
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{
 
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        quat_t rq;
 
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        float half_angle = angle * 0.5;
 
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        float sin_half = sin(half_angle);
 
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        rq.w = cos(half_angle);
 
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        rq.x = x * sin_half;
 
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        rq.y = y * sin_half;
 
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        rq.z = z * sin_half;
 
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        return quat_mul(q, rq);
 
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}