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test against an epsilon magnitude in gl_rotation_matrix()

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Brian Paul 2000-07-31 15:31:29 +00:00
parent 974e468e6d
commit 85dc4e7a77
1 changed files with 3 additions and 3 deletions
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6
src/mesa/main/matrix.c
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@ -1,8 +1,8 @@
/* $Id: matrix.c,v 1.18 2000/06/27 22:10:00 brianp Exp $ */
/* $Id: matrix.c,v 1.19 2000/07/31 15:31:29 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.3
* Version: 3.5
*
* Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
*
@ -597,7 +597,7 @@ void gl_rotation_matrix( GLfloat angle, GLfloat x, GLfloat y, GLfloat z,
mag = GL_SQRT( x*x + y*y + z*z );
if (mag == 0.0) {
if (mag <= 1.0e-4) {
/* generate an identity matrix and return */
MEMCPY(m, Identity, sizeof(GLfloat)*16);
return;