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/* This file is part of the KDE project
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Copyright (C) 2002, The Karbon Developers
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <core/vselection.h>
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#include "whirlpinchplugin.h"
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#include <karbon_view.h>
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#include <karbon_part.h>
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#include <kgenericfactory.h>
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#include <core/vdocument.h>
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#include <core/vcomposite.h>
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#include <core/vpath.h>
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#include <core/vsegment.h>
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#include <core/vglobal.h>
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#include <kdebug.h>
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#include <tqgroupbox.h>
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#include <tqlabel.h>
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#include <knuminput.h>
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typedef KGenericFactory<WhirlPinchPlugin, KarbonView> WhirlPinchPluginFactory;
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K_EXPORT_COMPONENT_FACTORY( karbon_whirlpinchplugin, WhirlPinchPluginFactory( "karbonwhirlpinchplugin" ) )
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WhirlPinchPlugin::WhirlPinchPlugin( KarbonView *tqparent, const char* name, const TQStringList & ) : Plugin( tqparent, name )
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{
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new KAction(
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i18n( "&Whirl/Pinch..." ), "14_whirl", 0, this,
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TQT_SLOT( slotWhirlPinch() ), actionCollection(), "path_whirlpinch" );
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m_whirlPinchDlg = new VWhirlPinchDlg();
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m_whirlPinchDlg->setAngle( 20.0 );
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m_whirlPinchDlg->setPinch( 0.0 );
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m_whirlPinchDlg->setRadius( 100.0 );
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}
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void
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WhirlPinchPlugin::slotWhirlPinch()
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{
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KarbonPart *part = ((KarbonView *)tqparent())->part();
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if( part && m_whirlPinchDlg->exec() )
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part->addCommand( new VWhirlPinchCmd( &part->document(), m_whirlPinchDlg->angle(), m_whirlPinchDlg->pinch(), m_whirlPinchDlg->radius() ), true );
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}
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VWhirlPinchDlg::VWhirlPinchDlg( TQWidget* tqparent, const char* name )
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: KDialogBase( tqparent, name, true, i18n( "Whirl Pinch" ), Ok | Cancel )
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{
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// add input fields:
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TQGroupBox* group = new TQGroupBox( 2, Qt::Horizontal, i18n( "Properties" ), this );
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new TQLabel( i18n( "Angle:" ), group );
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m_angle = new KDoubleNumInput( group );
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new TQLabel( i18n( "Pinch:" ), group );
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m_pinch = new KDoubleNumInput( group );
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new TQLabel( i18n( "Radius:" ), group );
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m_radius = new KDoubleNumInput( group );
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group->setMinimumWidth( 300 );
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// signals and slots:
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connect( this, TQT_SIGNAL( okClicked() ), this, TQT_SLOT( accept() ) );
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connect( this, TQT_SIGNAL( cancelClicked() ), this, TQT_SLOT( reject() ) );
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setMainWidget( group );
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setFixedSize( baseSize() );
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}
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double
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VWhirlPinchDlg::angle() const
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{
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return m_angle->value();
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}
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double
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VWhirlPinchDlg::pinch() const
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{
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return m_pinch->value();
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}
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double
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VWhirlPinchDlg::radius() const
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{
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return m_radius->value();
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}
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void
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VWhirlPinchDlg::setAngle( double value )
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{
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m_angle->setValue( value);
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}
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void
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VWhirlPinchDlg::setPinch( double value )
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{
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m_pinch->setValue(value);
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}
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void
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VWhirlPinchDlg::setRadius( double value )
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{
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m_radius->setValue( value);
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}
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VWhirlPinchCmd::VWhirlPinchCmd( VDocument* doc,
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double angle, double pinch, double radius )
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: VReplacingCmd( doc, i18n( "Whirl Pinch" ) )
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{
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m_angle = angle;
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m_pinch = pinch;
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m_radius = radius;
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m_center = document()->selection()->boundingBox().center();
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}
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VWhirlPinchCmd::~VWhirlPinchCmd()
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{
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}
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void
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VWhirlPinchCmd::visitVPath( VPath& composite )
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{
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// first subdivide:
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// VInsertKnots insertKnots( 2 );
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// insertKnots.visit( composite );
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VVisitor::visitVPath( composite );
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}
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void
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VWhirlPinchCmd::visitVSubpath( VSubpath& path )
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{
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TQWMatrix m;
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KoPoint delta;
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double dist;
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path.first();
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VSegment *curr = path.current();
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while( curr )
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{
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// TODO: selfmade this function since it's gone:
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// path.current()->convertToCurve();
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// Apply effect to each segment node.
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for( int i = 0; i < curr->degree(); ++i )
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{
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// calculate distance from whirl center to actual point
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delta = curr->point( i ) - m_center;
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dist = sqrt( delta.x() * delta.x() + delta.y() * delta.y() );
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// check if point is inside the whirl radius
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if( dist < m_radius )
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{
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m.reset();
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// normalize distance to whirl radius
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dist /= m_radius;
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double scale = pow( sin( VGlobal::pi_2 * dist ), -m_pinch );
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// pinch:
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m.translate( m_center.x(), m_center.y() );
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m.scale( scale, scale );
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// whirl:
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m.rotate( m_angle * ( 1.0 - dist ) * ( 1.0 - dist ) );
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m.translate( -m_center.x(), -m_center.y() );
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path.current()->setPoint( i, curr->point( i ).transform( m ) );
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}
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}
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if( !success() )
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setSuccess();
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curr = path.next();
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}
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// Invalidate bounding box once.
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path.tqinvalidateBoundingBox();
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}
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#include "whirlpinchplugin.moc"
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