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// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.0 (2010/01/01)
#include "Wm5GraphicsPCH.h"
#include "Wm5Utility.h"
using namespace Wm5;
//----------------------------------------------------------------------------
void Utility::ReflectX (int xSize, int ySize, int numBytesPerPixel,
char* pixels)
{
const int xMax = xSize/2;
const int xSizeM1 = xSize - 1;
for (int x = 0; x < xMax; ++x)
{
int reflectX = xSizeM1 - x;
for (int y = 0; y < ySize; ++y)
{
int src = numBytesPerPixel*(x + xSize*y);
int trg = numBytesPerPixel*(reflectX + xSize*y);
for (int i = 0; i < numBytesPerPixel; ++i)
{
char save = pixels[src + i];
pixels[src + i] = pixels[trg + i];
pixels[trg + i] = save;
}
}
}
}
//----------------------------------------------------------------------------
void Utility::ReflectY (int xSize, int ySize, int numBytesPerPixel,
char* pixels)
{
const int yMax = ySize/2;
const int ySizeM1 = ySize - 1;
for (int y = 0; y < yMax; ++y)
{
int reflectY = ySizeM1 - y;
for (int x = 0; x < xSize; ++x)
{
int src = numBytesPerPixel*(x + xSize*y);
int trg = numBytesPerPixel*(x + xSize*reflectY);
for (int i = 0; i < numBytesPerPixel; ++i)
{
char save = pixels[src + i];
pixels[src + i] = pixels[trg + i];
pixels[trg + i] = save;
}
}
}
}
//----------------------------------------------------------------------------
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