You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
107 lines
3.4 KiB
107 lines
3.4 KiB
14 years ago
|
/*
|
||
|
|
* Copyright (c) 2004 Cyrille Berger <cberger@cberger.net>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program 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 General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "kis_autobrush_resource.h"
|
||
|
|
#include <kdebug.h>
|
||
|
|
|
||
|
|
void KisAutobrushShape::createBrush( TQImage* img)
|
||
|
|
{
|
||
|
|
img->create(m_w, m_h, 32);
|
||
|
|
for(int j = 0; j < m_h; j++)
|
||
|
|
{
|
||
|
|
for(int i = 0; i < m_w; i++)
|
||
|
|
{
|
||
|
|
TQ_INT8 v = valueAt(i,j);
|
||
|
|
img->setPixel( i, j, tqRgb(v,v,v));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
KisAutobrushCircleShape::KisAutobrushCircleShape(TQ_INT32 w, TQ_INT32 h, double fh, double fv)
|
||
|
|
: KisAutobrushShape( w, h, w / 2.0 - fh, h / 2.0 - fv),
|
||
|
|
m_xcentre ( w / 2.0 ),
|
||
|
|
m_ycentre ( h / 2.0 ),
|
||
|
|
m_xcoef ( 2.0 / w ),
|
||
|
|
m_ycoef ( 2.0 / h ),
|
||
|
|
m_xfadecoef ( (m_fh == 0) ? 1 : ( 1.0 / m_fh)),
|
||
|
|
m_yfadecoef ( (m_fv == 0) ? 1 : ( 1.0 / m_fv))
|
||
|
|
{
|
||
|
|
}
|
||
|
|
TQ_INT8 KisAutobrushCircleShape::valueAt(TQ_INT32 x, TQ_INT32 y)
|
||
|
|
{
|
||
|
|
double xr = (x - m_xcentre) + 0.5;
|
||
|
|
double yr = (y - m_ycentre) + 0.5;
|
||
|
|
double n = norme( xr * m_xcoef, yr * m_ycoef);
|
||
|
|
if( n > 1 )
|
||
|
|
{
|
||
|
|
return 255;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
double normeFade = norme( xr * m_xfadecoef, yr * m_yfadecoef );
|
||
|
|
if( normeFade > 1)
|
||
|
|
{
|
||
|
|
double xle, yle;
|
||
|
|
// xle stands for x-coordinate limit exterior
|
||
|
|
// yle stands for y-coordinate limit exterior
|
||
|
|
// we are computing the coordinate on the external ellipse in order to compute
|
||
|
|
// the fade value
|
||
|
|
if( xr == 0 )
|
||
|
|
{
|
||
|
|
xle = 0;
|
||
|
|
yle = yr > 0 ? 1/m_ycoef : -1/m_ycoef;
|
||
|
|
} else {
|
||
|
|
double c = yr / (double)xr;
|
||
|
|
xle = sqrt(1 / norme( m_xcoef, c * m_ycoef ));
|
||
|
|
xle = xr > 0 ? xle : -xle;
|
||
|
|
yle = xle * c;
|
||
|
|
}
|
||
|
|
// On the internal limit of the fade area, normeFade is equal to 1
|
||
|
|
double normeFadeLimitE = norme( xle * m_xfadecoef, yle * m_yfadecoef );
|
||
|
|
return (uchar)(255 * ( normeFade - 1 ) / ( normeFadeLimitE - 1 ));
|
||
|
|
} else {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
KisAutobrushRectShape::KisAutobrushRectShape(TQ_INT32 w, TQ_INT32 h, double fh, double fv)
|
||
|
|
: KisAutobrushShape( w, h, w / 2.0 - fh, h / 2.0 - fv),
|
||
|
|
m_xcentre ( w / 2.0 ),
|
||
|
|
m_ycentre ( h / 2.0 ),
|
||
|
|
m_c( fv/fh)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
TQ_INT8 KisAutobrushRectShape::valueAt(TQ_INT32 x, TQ_INT32 y)
|
||
|
|
{
|
||
|
|
double xr = TQABS(x - m_xcentre);
|
||
|
|
double yr = TQABS(y - m_ycentre);
|
||
|
|
if( xr > m_fh || yr > m_fv )
|
||
|
|
{
|
||
|
|
if( yr <= ((xr - m_fh) * m_c + m_fv ) )
|
||
|
|
{
|
||
|
|
return (uchar)(255 * (xr - m_fh) / (m_w - m_fh));
|
||
|
|
} else {
|
||
|
|
return (uchar)(255 * (yr - m_fv) / (m_w - m_fv));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|