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50 lines
2.1 KiB
C
50 lines
2.1 KiB
C
/*
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* In addition, as a special exception, the author gives permission to
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* link the code of this program with the Half-Life Game Engine ("HL
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* Engine") and Modified Game Libraries ("MODs") developed by Valve,
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* L.L.C ("Valve"). You must obey the GNU General Public License in all
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* respects for all of the code used other than the HL Engine and MODs
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* from Valve. If you modify this file, you may extend this exception
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* to your version of the file, but you are not obligated to do so. If
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* you do not wish to do so, delete this exception statement from your
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* version.
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*
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*/
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#pragma once
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#ifndef M_PI
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#define M_PI 3.14159265358979323846 // matches value in gcc v2 math.h
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#endif
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#define PITCH 0 // up / down
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#define YAW 1 // left / right
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#define ROLL 2 // fall over
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float Length(const vec_t *v);
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void AngleMatrix(const float *angles, float (*matrix)[4]);
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int VectorCompare(const float *v1, const float *v2);
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void CrossProduct(const float *v1, const float *v2, float *cross);
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void VectorTransform(const float *in1, float in2[3][4], float *out);
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float VectorNormalize(vec_t *v);
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void ConcatTransforms(float in1[3][4], float in2[3][4], float out[3][4]);
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void MatrixCopy(float in[3][4], float out[3][4]);
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void QuaternionMatrix(vec4_t quaternion, float (*matrix)[4]);
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void QuaternionSlerp(vec4_t p, vec4_t q, float t, vec4_t qt);
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void AngleQuaternion(float *angles, vec4_t quaternion);
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