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|
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: b3dcolor.cxx,v $
* $Revision: 1.6 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_goodies.hxx"
#ifndef GCC
#endif
#include <goodies/b3dcolor.hxx>
/*************************************************************************
|*
|* Farbwert interpolieren
|*
\************************************************************************/
void B3dColor::CalcInBetween(Color& rOld1, Color& rOld2, double t)
{
if(rOld1 != rOld2)
{
UINT16 nFac = (UINT16)(t * 256.0);
UINT16 nNegFac = 256 - nFac;
SetRed((UINT8)(((nFac * (UINT16)rOld2.GetRed())
+ (nNegFac * (UINT16)rOld1.GetRed())) >> 8));
SetGreen((UINT8)(((nFac * (UINT16)rOld2.GetGreen())
+ (nNegFac * (UINT16)rOld1.GetGreen())) >> 8));
SetBlue((UINT8)(((nFac * (UINT16)rOld2.GetBlue())
+ (nNegFac * (UINT16)rOld1.GetBlue())) >> 8));
SetTransparency((UINT8)(((nFac * (UINT16)rOld2.GetTransparency())
+ (nNegFac * (UINT16)rOld1.GetTransparency())) >> 8));
}
else
{
SetColor(rOld1.GetColor());
}
}
/*************************************************************************
|*
|* Farbwert Mittelwert finden mit 2 Farben
|*
\************************************************************************/
void B3dColor::CalcMiddle(Color& rOld1, Color& rOld2)
{
if(rOld1 != rOld2)
{
SetRed((UINT8)(((UINT16)rOld1.GetRed()
+ (UINT16)rOld2.GetRed())>>1));
SetGreen((UINT8)(((UINT16)rOld1.GetGreen()
+ (UINT16)rOld2.GetGreen())>>1));
SetBlue((UINT8)(((UINT16)rOld1.GetBlue()
+ (UINT16)rOld2.GetBlue())>>1));
SetTransparency((UINT8)(((UINT16)rOld1.GetTransparency()
+ (UINT16)rOld2.GetTransparency())>>1));
}
else
{
SetColor(rOld1.GetColor());
}
}
/*************************************************************************
|*
|* Farbwert Mittelwert finden mit 3 Farben
|*
\************************************************************************/
void B3dColor::CalcMiddle(Color& rOld1, Color& rOld2, Color& rOld3)
{
if(rOld1 != rOld2)
{
if(rOld1 != rOld3)
{
// alle 3 unterschiedlich
SetRed((UINT8)(((UINT16)rOld1.GetRed()
+ (UINT16)rOld2.GetRed()
+ (UINT16)rOld3.GetRed()) / 3L));
SetGreen((UINT8)(((UINT16)rOld1.GetGreen()
+ (UINT16)rOld2.GetGreen()
+ (UINT16)rOld3.GetGreen()) / 3L));
SetBlue((UINT8)(((UINT16)rOld1.GetBlue()
+ (UINT16)rOld2.GetBlue()
+ (UINT16)rOld3.GetBlue()) / 3L));
SetTransparency((UINT8)(((UINT16)rOld1.GetTransparency()
+ (UINT16)rOld2.GetTransparency()
+ (UINT16)rOld3.GetTransparency()) / 3L));
}
else
{
// 1 != 2, 1 == 3
CalcMiddle(rOld1, rOld2);
}
}
else
{
// 1 == 2
if(rOld1 != rOld3)
{
CalcMiddle(rOld1, rOld3);
}
else
{
// 1==2, 1==3 -> alle gleich
SetColor(rOld1.GetColor());
}
}
}
/*************************************************************************
|*
|* Ermittle den Abstand der beiden Farben im Farbraum
|* Dies geschieht OHNE Wurzelziehen, d.h. es wird als Metrik im RGB
|* Farbraum hier das Quadrat der 'echten' (gewohnten) Entfernung benutzt
|*
\************************************************************************/
ULONG B3dColor::GetDistance(Color& rOld)
{
// Bei Gleichheit kein Abstand
if(*this == rOld)
return 0L;
// Abstand ermitteln
long nDistRed = rOld.GetRed() > GetRed() ?
rOld.GetRed() - GetRed() :
GetRed() - rOld.GetRed();
long nDistGreen = rOld.GetGreen() > GetGreen() ?
rOld.GetGreen() - GetGreen() :
GetGreen() - rOld.GetGreen();
long nDistBlue = rOld.GetBlue() > GetBlue() ?
rOld.GetBlue() - GetBlue() :
GetBlue() - rOld.GetBlue();
return (ULONG)(nDistRed * nDistRed
+ nDistGreen * nDistGreen
+ nDistBlue * nDistBlue);
}
/*************************************************************************
|*
|* Farbaddition mit clamping
|*
\************************************************************************/
B3dColor& B3dColor::operator+= (const B3dColor& rCol)
{
UINT16 nZwi;
if(rCol.GetRed())
{
nZwi = (UINT16)GetRed() + (UINT16)rCol.GetRed();
if(nZwi > 255)
nZwi = 255;
SetRed((UINT8)nZwi);
}
if(rCol.GetGreen())
{
nZwi = (UINT16)GetGreen() + (UINT16)rCol.GetGreen();
if(nZwi > 255)
nZwi = 255;
SetGreen((UINT8)nZwi);
}
if(rCol.GetBlue())
{
nZwi = (UINT16)GetBlue() + (UINT16)rCol.GetBlue();
if(nZwi > 255)
nZwi = 255;
SetBlue((UINT8)nZwi);
}
if(rCol.GetTransparency())
{
nZwi = (UINT16)GetTransparency() + (UINT16)rCol.GetTransparency();
if(nZwi > 255)
nZwi = 255;
SetTransparency((UINT8)nZwi);
}
return *this;
}
/*************************************************************************
|*
|* Farbsubtraktion mit clamping
|*
\************************************************************************/
B3dColor& B3dColor::operator-= (const B3dColor& rCol)
{
INT16 nZwi;
if(rCol.GetRed())
{
nZwi = (INT16)GetRed() - (INT16)rCol.GetRed();
if(nZwi < 0)
nZwi = 0;
SetRed((UINT8)nZwi);
}
if(rCol.GetGreen())
{
nZwi = (INT16)GetGreen() - (INT16)rCol.GetGreen();
if(nZwi < 0)
nZwi = 0;
SetGreen((UINT8)nZwi);
}
if(rCol.GetBlue())
{
nZwi = (INT16)GetBlue() - (INT16)rCol.GetBlue();
if(nZwi < 0)
nZwi = 0;
SetBlue((UINT8)nZwi);
}
if(rCol.GetTransparency())
{
nZwi = (INT16)GetTransparency() - (INT16)rCol.GetTransparency();
if(nZwi < 0)
nZwi = 0;
SetTransparency((UINT8)nZwi);
}
return *this;
}
/*************************************************************************
|*
|* Farbaddition mit clamping, neue Farbe erzeugen
|*
\************************************************************************/
B3dColor B3dColor::operator+ (const B3dColor& rCol) const
{
B3dColor aSum = *this;
aSum += rCol;
return aSum;
}
/*************************************************************************
|*
|* Farbsubtraktion mit clamping, neue Farbe erzeugen
|*
\************************************************************************/
B3dColor B3dColor::operator- (const B3dColor& rCol) const
{
B3dColor aSub = *this;
aSub -= rCol;
return aSub;
}
/*************************************************************************
|*
|* Farbmultiplikation, d.h. Gewichtung der Farben aneinander
|*
\************************************************************************/
B3dColor& B3dColor::operator*= (const B3dColor& rCol)
{
// urspruengliches Objekt ist die Farbe, rCol die zu berechnende
// Gewichtung
SetRed((UINT8)(((((UINT16)GetRed())+1)
* (UINT16)rCol.GetRed()) >> 8));
SetGreen((UINT8)(((((UINT16)GetGreen())+1)
* (UINT16)rCol.GetGreen()) >> 8));
SetBlue((UINT8)(((((UINT16)GetBlue())+1)
* (UINT16)rCol.GetBlue()) >> 8));
SetTransparency((UINT8)(((((UINT16)GetTransparency())+1)
* (UINT16)rCol.GetTransparency()) >> 8));
return *this;
}
/*************************************************************************
|*
|* Farbmultiplikation, neue Farbe erzeugen
|*
\************************************************************************/
B3dColor B3dColor::operator* (const B3dColor& rCol) const
{
B3dColor aMul = *this;
aMul *= rCol;
return aMul;
}
/*************************************************************************
|*
|* Farbmultiplikation mit Faktor im Bereich [0.0 .. 1.0]
|*
\************************************************************************/
B3dColor& B3dColor::operator*= (const double fVal)
{
ULONG nVal = (ULONG)(fVal * 65536.0);
SetRed((UINT8)(((ULONG)GetRed() * nVal) >> 16));
SetGreen((UINT8)(((ULONG)GetGreen() * nVal) >> 16));
SetBlue((UINT8)(((ULONG)GetBlue() * nVal) >> 16));
SetTransparency((UINT8)(((ULONG)GetTransparency() * nVal) >> 16));
return *this;
}
/*************************************************************************
|*
|* Farbmultiplikation mit Faktor, neue Farbe erzeugen
|*
\************************************************************************/
B3dColor B3dColor::operator* (const double fVal) const
{
B3dColor aMul = *this;
aMul *= fVal;
return aMul;
}
|
