2007-11-04 03:47:06 +00:00
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/*
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Copyright (C) 1999-2007 id Software, Inc. and contributors.
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For a list of contributors, see the accompanying CONTRIBUTORS file.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __MATHLIB__
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#define __MATHLIB__
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// mathlib.h
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#include <math.h>
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#ifdef DOUBLEVEC_T
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typedef double vec_t;
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#else
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typedef float vec_t;
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#endif
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typedef vec_t vec3_t[3];
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#define SIDE_FRONT 0
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#define SIDE_ON 2
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#define SIDE_BACK 1
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#define SIDE_CROSS -2
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#define Q_PI 3.14159265358979323846
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extern vec3_t vec3_origin;
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#define EQUAL_EPSILON 0.001
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qboolean VectorCompare (vec3_t v1, vec3_t v2);
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#define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2])
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#define VectorSubtract(a,b,c) {c[0]=a[0]-b[0];c[1]=a[1]-b[1];c[2]=a[2]-b[2];}
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#define VectorAdd(a,b,c) {c[0]=a[0]+b[0];c[1]=a[1]+b[1];c[2]=a[2]+b[2];}
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#define VectorCopy(a,b) {b[0]=a[0];b[1]=a[1];b[2]=a[2];}
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#define VectorScale(a,b,c) {c[0]=b*a[0];c[1]=b*a[1];c[2]=b*a[2];}
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#define VectorClear(x) {x[0] = x[1] = x[2] = 0;}
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#define VectorNegate(x) {x[0]=-x[0];x[1]=-x[1];x[2]=-x[2];}
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vec_t Q_rint (vec_t in);
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vec_t _DotProduct (vec3_t v1, vec3_t v2);
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void _VectorSubtract (vec3_t va, vec3_t vb, vec3_t out);
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void _VectorAdd (vec3_t va, vec3_t vb, vec3_t out);
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void _VectorCopy (vec3_t in, vec3_t out);
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void _VectorScale (vec3_t v, vec_t scale, vec3_t out);
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double VectorLength(vec3_t v);
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void VectorMA (vec3_t va, double scale, vec3_t vb, vec3_t vc);
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void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross);
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vec_t VectorNormalize (vec3_t in, vec3_t out);
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vec_t ColorNormalize (vec3_t in, vec3_t out);
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void VectorInverse (vec3_t v);
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void ClearBounds (vec3_t mins, vec3_t maxs);
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void AddPointToBounds (vec3_t v, vec3_t mins, vec3_t maxs);
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#endif
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