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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 "Wm5ImagicsPCH.h"
#include "Wm5PdeFilter.h"
using namespace Wm5;
//----------------------------------------------------------------------------
PdeFilter::PdeFilter (int quantity, const float* data, float borderValue,
ScaleType scaleType)
{
mQuantity = quantity;
mBorderValue = borderValue;
mScaleType = scaleType;
mTimeStep = 0.0f;
float maxValue = data[0];
mMin = maxValue;
for (int i = 1; i < mQuantity; i++)
{
float value = data[i];
if (value < mMin)
{
mMin = value;
}
else if (value > maxValue)
{
maxValue = value;
}
}
if (mMin != maxValue)
{
switch (mScaleType)
{
case ST_NONE:
mOffset = 0.0f;
mScale = 1.0f;
break;
case ST_UNIT:
mOffset = 0.0f;
mScale = 1.0f/(maxValue - mMin);
break;
case ST_SYMMETRIC:
mOffset = -1.0f;
mScale = 2.0f/(maxValue - mMin);
break;
case ST_PRESERVE_ZERO:
mOffset = 0.0f;
mScale = (maxValue >= -mMin ? 1.0f/maxValue : -1.0f/mMin);
mMin = 0.0f;
break;
}
}
else
{
mOffset = 0.0f;
mScale = 1.0f;
}
}
//----------------------------------------------------------------------------
PdeFilter::~PdeFilter ()
{
}
//----------------------------------------------------------------------------
void PdeFilter::Update ()
{
OnPreUpdate();
OnUpdate();
OnPostUpdate();
}
//----------------------------------------------------------------------------
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