mirror of https://github.com/axmolengine/axmol.git
70 lines
3.5 KiB
C
70 lines
3.5 KiB
C
/*
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Copyright (c) 2008, Luke Benstead.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef VEC3_H_INCLUDED
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#define VEC3_H_INCLUDED
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#include "platform/CCPlatformMacros.h"
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#include <assert.h>
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#ifndef kmScalar
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#define kmScalar float
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#endif
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struct kmMat4;
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typedef struct kmVec3 {
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kmScalar x;
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kmScalar y;
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kmScalar z;
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} kmVec3;
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#ifdef __cplusplus
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extern "C" {
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#endif
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CC_DLL kmVec3* kmVec3Fill(kmVec3* pOut, kmScalar x, kmScalar y, kmScalar z);
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CC_DLL kmScalar kmVec3Length(const kmVec3* pIn); /** Returns the length of the vector */
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CC_DLL kmScalar kmVec3LengthSq(const kmVec3* pIn); /** Returns the square of the length of the vector */
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CC_DLL kmVec3* kmVec3Normalize(kmVec3* pOut, const kmVec3* pIn); /** Returns the vector passed in set to unit length */
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CC_DLL kmVec3* kmVec3Cross(kmVec3* pOut, const kmVec3* pV1, const kmVec3* pV2); /** Returns a vector perpendicular to 2 other vectors */
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CC_DLL kmScalar kmVec3Dot(const kmVec3* pV1, const kmVec3* pV2); /** Returns the cosine of the angle between 2 vectors */
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CC_DLL kmVec3* kmVec3Add(kmVec3* pOut, const kmVec3* pV1, const kmVec3* pV2); /** Adds 2 vectors and returns the result */
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CC_DLL kmVec3* kmVec3Subtract(kmVec3* pOut, const kmVec3* pV1, const kmVec3* pV2); /** Subtracts 2 vectors and returns the result */
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CC_DLL kmVec3* kmVec3Transform(kmVec3* pOut, const kmVec3* pV1, const struct kmMat4* pM); /** Transforms a vector (assuming w=1) by a given matrix */
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CC_DLL kmVec3* kmVec3TransformNormal(kmVec3* pOut, const kmVec3* pV, const struct kmMat4* pM);/**Transforms a 3D normal by a given matrix */
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CC_DLL kmVec3* kmVec3TransformCoord(kmVec3* pOut, const kmVec3* pV, const struct kmMat4* pM); /**Transforms a 3D vector by a given matrix, projecting the result back into w = 1. */
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CC_DLL kmVec3* kmVec3Scale(kmVec3* pOut, const kmVec3* pIn, const kmScalar s); /** Scales a vector to length s */
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CC_DLL int kmVec3AreEqual(const kmVec3* p1, const kmVec3* p2);
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CC_DLL kmVec3* kmVec3InverseTransform(kmVec3* pOut, const kmVec3* pV, const struct kmMat4* pM);
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CC_DLL kmVec3* kmVec3InverseTransformNormal(kmVec3* pOut, const kmVec3* pVect, const struct kmMat4* pM);
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CC_DLL kmVec3* kmVec3Assign(kmVec3* pOut, const kmVec3* pIn);
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CC_DLL kmVec3* kmVec3Zero(kmVec3* pOut);
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#ifdef __cplusplus
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}
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#endif
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#endif /* VEC3_H_INCLUDED */
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