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/*
VeroRoute - Qt based Veroboard/Perfboard/PCB layout & routing application.
Copyright (C) 2017 Alex Lawrow ( dralx@users.sourceforge.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 3 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, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "Common.h"
#include <QPointF>
// Class to transform a QPointF (i.e. translate/rotate it w.r.t. the origin)
enum class TRANSFORM { NONE = 0, SCALE, TRANSLATE, ROTATE };
struct Transform
{
Transform(TRANSFORM eType, qreal a = 0, qreal b = 0) : m_eType(eType), m_A(a), m_B(b) {}
~Transform() {}
Transform(const Transform& o) { *this = o; }
Transform& operator=(const Transform& o)
{
m_eType = o.m_eType;
m_A = o.m_A;
m_B = o.m_B;
return *this;
}
void Do(QPointF& o) const // Transform the passed in point
{
qreal dRadians(0), C(0), S(0);
const qreal x = o.x(); // Take a copy (not a reference)
const qreal y = o.y(); // Take a copy (not a reference)
switch( m_eType )
{
case TRANSFORM::SCALE: o.setX(x * m_A); o.setY(y * m_B); return;
case TRANSFORM::TRANSLATE: o.setX(x + m_A); o.setY(y + m_B); return;
case TRANSFORM::ROTATE: dRadians = m_A * RADIANS_PER_DEGREE;
C = cos(dRadians); S = sin(dRadians);
o.setX(x*C - y*S); o.setY(x*S + y*C); return;
default: assert(m_eType == TRANSFORM::NONE); return;
}
}
const TRANSFORM& GetType() const { return m_eType; }
private:
TRANSFORM m_eType = TRANSFORM::TRANSLATE; // Transform type
qreal m_A = 0; // Parameter 1
qreal m_B = 0; // Parameter 2
};
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