transform.cpp

/*
 
Pencil2D - Traditional Animation Software
Copyright (C) 2005-2007 Patrick Corrieri & Pascal Naidon
Copyright (C) 2012-2020 Matthew Chiawen Chang
 
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; version 2 of the License.
 
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.
 
*/
#include <QTransform>
 
#include "transform.h"
 
QRectF Transform::mapFromLocalRect(const QTransform& transform, const QRect& rect)
{
    return QRectF(transform.inverted().mapRect(QRectF(rect)));
}
 
QRectF Transform::mapToWorldRect(const QTransform& transform, const QTransform& worldT, const QRect rect)
{
    return worldT.mapRect(mapFromLocalRect(transform, rect));
}
 
QPointF Transform::mapFromLocalPoint(const QTransform& transform, const QPoint& point)
{
    return QPointF(transform.inverted().map(QPointF(point)));
}
 
QPointF Transform::mapToWorldPoint(const QTransform& transform, const QTransform& worldT, const QPoint& point)
{
    return worldT.map(mapFromLocalPoint(transform, point));
}
 
QPolygonF Transform::mapFromLocalPolygon(const QTransform& transform, const QRect& rect)
{
    return QPolygonF(transform.inverted().map(QPolygonF(QRectF(rect))));
}
 
QPolygonF Transform::mapToWorldPolygon(const QTransform& transform, const QTransform& worldT, const QRect& rect)
{
    return worldT.map(mapFromLocalPolygon(transform, rect));
}