119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
/**
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* @file transform.h
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*/
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/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2007-2010 Wayne Stambaugh <stambaughw@gmail.com>
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* Copyright (C) 2007-2021 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef _TRANSFORM_H_
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#define _TRANSFORM_H_
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#include <geometry/eda_angle.h>
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#include <math/box2.h>
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/**
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* for transforming drawing coordinates for a wxDC device context.
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*
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* This probably should be a base class with all pure virtual methods and a WXDC_TRANSFORM
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* derived class. Then in the future if some new device context is used, a new transform could
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* be derived from the base class and all the drawable objects would have to do is provide
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* overloaded draw methods to use the new transform.
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*/
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class TRANSFORM
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{
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public:
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int x1;
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int y1;
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int x2;
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int y2;
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/**
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* The default construct creates a transform that draws object is the normal orientation.
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*/
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TRANSFORM() :
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x1( 1 ),
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y1( 0 ),
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x2( 0 ),
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y2( -1 )
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{}
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TRANSFORM( int ax1, int ay1, int ax2, int ay2 ) :
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x1( ax1 ),
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y1( ay1 ),
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x2( ax2 ),
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y2( ay2 )
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{}
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bool operator==( const TRANSFORM& aTransform ) const;
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bool operator!=( const TRANSFORM& aTransform ) const { return !( *this == aTransform ); }
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/**
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* Calculate a new coordinate according to the mirror/rotation transform.
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* Useful to calculate actual coordinates of a point from coordinates relative to a symbol,
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* which are given for a non-rotated,-non mirrored item.
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* @param aPoint = The position to transform
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* @return The transformed coordinate.
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*/
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VECTOR2I TransformCoordinate( const VECTOR2I& aPoint ) const;
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/**
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* Calculate a new rect according to the mirror/rotation transform.
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* Useful to calculate actual coordinates of a point from coordinates relative to a symbol,
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* which are given for a non-rotated,-non mirrored item.
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* @param aRect = The rectangle to transform
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* @return The transformed rectangle.
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*/
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BOX2I TransformCoordinate( const BOX2I& aRect ) const;
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/**
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* Calculate the Inverse mirror/rotation transform.
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* Useful to calculate coordinates relative to a symbol, which must be for a non-rotated,
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* non-mirrored item from the actual coordinate.
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* @return The inverse transform.
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*/
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TRANSFORM InverseTransform( ) const;
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/**
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* Calculate new angles according to the transform.
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*
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* @param aAngle1 = The first angle to transform
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* @param aAngle2 = The second angle to transform
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* @return True if the angles were swapped during the transform.
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*/
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bool MapAngles( EDA_ANGLE* aAngle1, EDA_ANGLE* aAngle2 ) const;
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};
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namespace std
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{
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template <> struct hash<TRANSFORM>
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{
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size_t operator() ( const TRANSFORM& k ) const;
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};
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}
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#endif // _TRANSFORM_H_
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