189 lines
5.2 KiB
PHP
189 lines
5.2 KiB
PHP
/**
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* vim: set ts=4 :
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* =============================================================================
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* SourceMod (C)2004-2007 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This file is part of the SourceMod/SourcePawn SDK.
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <http://www.sourcemod.net/license.php>.
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*
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* Version: $Id: vector.inc 1336 2007-08-15 06:19:30Z damagedsoul $
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*/
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#if defined _vector_included
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#endinput
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#endif
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#define _vector_included
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/**
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* Calculates a vector's length.
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*
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* @param vec Vector.
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* @param squared If true, the result will be squared (for optimization).
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* @return Vector length (magnitude).
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*/
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native Float:GetVectorLength(const Float:vec[3], bool:squared=false);
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/**
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* Calculates the distance between two vectors.
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*
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* @param vec1 First vector.
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* @param vec2 Second vector.
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* @param squared If true, the result will be squared (for optimization).
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* @return Vector distance.
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*/
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native Float:GetVectorDistance(const Float:vec1[3], const Float:vec2[3], bool:squared=false);
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/**
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* Calculates the dot product of two vectors.
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*
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* @param vec1 First vector.
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* @param vec2 Second vector.
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* @return Dot product of the two vectors.
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*/
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native Float:GetVectorDotProduct(const Float:vec1[3], const Float:vec2[3]);
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/**
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* Computes the cross product of two vectors. Any input array can be the same
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* as the output array.
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*
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* @param vec1 First vector.
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* @param vec2 Second vector.
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* @param result Resultant vector.
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* @noreturn
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*/
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native GetVectorCrossProduct(const Float:vec1[3], const Float:vec2[3], Float:result[3]);
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/**
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* Normalizes a vector. The input array can be the same as the output array.
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*
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* @param vec Vector.
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* @param result Resultant vector.
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* @return Vector length.
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*/
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native Float:NormalizeVector(const Float:vec[3], Float:result[3]);
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/**
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* Returns vectors in the direction of an angle.
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*
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* @param angle Angle.
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* @param fwd Forward vector buffer or NULL_VECTOR.
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* @param right Right vector buffer or NULL_VECTOR.
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* @param up Up vector buffer or NULL_VECTOR.
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* @noreturn
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*/
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native GetAngleVectors(const Float:angle[3], Float:fwd[3], Float:right[3], Float:up[3]);
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/**
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* Returns angles from a vector.
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*
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* @param vec Vector.
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* @param angle Angle buffer.
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* @noreturn
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*/
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native GetVectorAngles(const Float:vec[3], Float:angle[3]);
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/**
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* Returns direction vectors from a vector.
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*
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* @param vec Vector.
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* @param right Right vector buffer or NULL_VECTOR.
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* @param up Up vector buffer or NULL_VECTOR.
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* @noreturn
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*/
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native GetVectorVectors(const Float:vec[3], Float:right[3], Float:up[3]);
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/**
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* Adds two vectors. It is safe to use either input buffer as an output
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* buffer.
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*
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* @param vec1 First vector.
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* @param vec2 Second vector.
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* @param result Result buffer.
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* @noreturn
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*/
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stock AddVectors(const Float:vec1[3], const Float:vec2[3], Float:result[3])
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{
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result[0] = vec1[0] + vec2[0];
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result[1] = vec1[1] + vec2[1];
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result[2] = vec1[2] + vec2[2];
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}
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/**
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* Subtracts a vector from another vector. It is safe to use either input
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* buffer as an output buffer.
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*
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* @param vec1 First vector.
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* @param vec2 Second vector to subtract from first.
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* @param result Result buffer.
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* @noreturn
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*/
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stock SubtractVectors(const Float:vec1[3], const Float:vec2[3], Float:result[3])
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{
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result[0] = vec1[0] - vec2[0];
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result[1] = vec1[1] - vec2[1];
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result[2] = vec1[2] - vec2[2];
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}
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/**
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* Scales a vector.
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*
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* @param vec Vector.
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* @param scale Scale value.
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* @noreturn
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*/
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stock ScaleVector(Float:vec[3], Float:scale)
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{
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vec[0] *= scale;
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vec[1] *= scale;
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vec[2] *= scale;
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}
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/**
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* Negatives a vector.
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*
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* @param vec Vector.
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* @noreturn
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*/
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stock NegateVector(Float:vec[3])
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{
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vec[0] = -vec[0];
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vec[1] = -vec[1];
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vec[2] = -vec[2];
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}
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/**
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* Builds a vector from two points by subtracting the points.
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*
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* @param pt1 First point (to be subtracted from the second).
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* @param pt2 Second point.
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* @param output Output vector buffer.
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* @noreturn
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*/
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stock MakeVectorFromPoints(const Float:pt1[3], const Float:pt2[3], Float:output[3])
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{
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output[0] = pt2[0] - pt1[0];
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output[1] = pt2[1] - pt1[1];
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output[2] = pt2[2] - pt1[2];
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}
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