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//=======================================================================
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// Project Monophony
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// Wire-Frame 3D Graphics Accelerator IP Core
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//
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// File:
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// mp_vector4.h
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//
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// Abstract:
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// vector4 implementation
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//
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// Author:
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// Kenji Ishimaru (kenji.ishimaru@prtissimo.com)
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//
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//======================================================================
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//
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// Copyright (c) 2015, Kenji Ishimaru
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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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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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Revision History
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#include <math.h>
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#include "mp_vector4.h"
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void mp_vector4_init(mp_vector4 *dst) {
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dst->x = 0.0;
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dst->y = 0.0;
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dst->z = 0.0;
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dst->w = 0.0;
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}
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void mp_vector4_set0(mp_vector4 *dst, float lx, float ly, float lz) {
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dst->x = lx;
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dst->y = ly;
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dst->z = lz;
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dst->w = 1.0;
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}
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void mp_vector4_set1(mp_vector4 *dst, float lx, float ly,
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float lz, float lw) {
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dst->x = lx;
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dst->y = ly;
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dst->z = lz;
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dst->w = lw;
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}
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void mp_vector4_set2(mp_vector4 *dst, mp_vector4 *v) {
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dst->x = v->x;
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dst->y = v->y;
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dst->z = v->z;
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dst->w = v->w;
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}
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void mp_vector4_normalize(mp_vector4 *dst) {
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float t = dst->x*dst->x + dst->y*dst->y + dst->z*dst->z + dst->w*dst->w;
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t = sqrt(t);
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t = 1.0F/t;
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dst->x = dst->x * t;
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dst->y = dst->y * t;
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dst->z = dst->z * t;
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dst->w = dst->w * t;
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}
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