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103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/*
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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 The 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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#pragma once
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#include <preview_items/multistep_geom_manager.h>
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#include <geometry/eda_angle.h>
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#include <geometry/seg.h>
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namespace KIGFX
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{
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namespace PREVIEW
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{
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/**
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* Manage the construction of a bezier through a series of steps.
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*
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* See also @ref KIGFX::PREVIEW::ARC_GEOM_MANAGER.
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*
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* Interfaces are provided to return both arc geometry (can be used to set up real beziers on
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* PCBs, for example) as well as important control points for informational overlays.
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*/
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class BEZIER_GEOM_MANAGER : public MULTISTEP_GEOM_MANAGER
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{
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public:
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BEZIER_GEOM_MANAGER() {}
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enum BEZIER_STEPS
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{
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SET_START = 0, ///< Waiting to lock in the start point
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SET_CONTROL1, ///< Waiting to lock in the first control point
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SET_END, ///< Waiting to lock in the end point
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SET_CONTROL2, ///< Waiting to lock in the second control point
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COMPLETE
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};
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int getMaxStep() const override { return COMPLETE; }
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/**
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* Get the current step the manager is on (useful when drawing
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* something depends on the current state)
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*/
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BEZIER_STEPS GetStep() const { return static_cast<BEZIER_STEPS>( getStep() ); }
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bool acceptPoint( const VECTOR2I& aPt ) override;
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/*
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* Geometry query interface - used by clients of the manager
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*/
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///< Get the center point of the arc (valid when state > SET_ORIGIN)
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VECTOR2I GetStart() const;
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///< Get the coordinates of the arc start
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VECTOR2I GetControlC1() const;
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VECTOR2I GetControlC2() const;
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///< Get the coordinates of the arc end point
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VECTOR2I GetEnd() const;
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private:
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/*
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* Point acceptor functions
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*/
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///< Set the center point of the arc
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bool setStart( const VECTOR2I& aOrigin );
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bool setControlC1( const VECTOR2I& aControl );
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bool setEnd( const VECTOR2I& aCursor );
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bool setControlC2( const VECTOR2I& aControl );
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/*
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* Bezier geometry
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*/
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VECTOR2I m_start;
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VECTOR2I m_controlC1;
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VECTOR2I m_end;
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VECTOR2I m_controlC2;
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};
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} // namespace PREVIEW
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} // namespace KIGFX
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