/*****************************************************************************/
// Copyright 2007 Adobe Systems Incorporated
// All Rights Reserved.
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in
// accordance with the terms of the Adobe license agreement accompanying it.
/*****************************************************************************/
/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_tone_curve.cpp#1 $ */
/* $DateTime: 2012/05/30 13:28:51 $ */
/* $Change: 832332 $ */
/* $Author: tknoll $ */
/*****************************************************************************/
#include "dng_tone_curve.h"
#include "dng_assertions.h"
#include "dng_spline.h"
#include "dng_utils.h"
/******************************************************************************/
dng_tone_curve::dng_tone_curve ()
: fCoord ()
{
SetNull ();
}
/******************************************************************************/
bool dng_tone_curve::operator== (const dng_tone_curve &curve) const
{
return fCoord == curve.fCoord;
}
/******************************************************************************/
void dng_tone_curve::SetNull ()
{
fCoord.resize (2);
fCoord [0].h = 0.0;
fCoord [0].v = 0.0;
fCoord [1].h = 1.0;
fCoord [1].v = 1.0;
}
/******************************************************************************/
bool dng_tone_curve::IsNull () const
{
dng_tone_curve temp;
return (*this == temp);
}
/******************************************************************************/
void dng_tone_curve::SetInvalid ()
{
fCoord.clear ();
}
/******************************************************************************/
bool dng_tone_curve::IsValid () const
{
if (fCoord.size () < 2)
{
return false;
}
for (uint32 j = 0; j < fCoord.size (); j++)
{
if (fCoord [j] . h < 0.0 || fCoord [j] . h > 1.0 ||
fCoord [j] . v < 0.0 || fCoord [j] . v > 1.0)
{
return false;
}
if (j > 0)
{
if (fCoord [j] . h <= fCoord [j - 1] . h)
{
return false;
}
}
}
return true;
}
/******************************************************************************/
void dng_tone_curve::Solve (dng_spline_solver &solver) const
{
solver.Reset ();
for (uint32 index = 0; index < fCoord.size (); index++)
{
solver.Add (fCoord [index].h,
fCoord [index].v);
}
solver.Solve ();
}
/*****************************************************************************/