133 lines
3.5 KiB
C++
133 lines
3.5 KiB
C++
/****************************************************************************
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**
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** This file is part of the LibreCAD project, a 2D CAD program
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**
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** Copyright(C) 2015 Dongxu Li (dongxuli2011@gmail.com)
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** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
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** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file gpl-2.0.txt included in the
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** packaging of this file.
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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, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**
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** This copyright notice MUST APPEAR in all copies of the script!
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**
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**********************************************************************/
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#ifndef RS_GRID_H
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#define RS_GRID_H
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#include "rs_vector.h"
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class RS_GraphicView;
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class QString;
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namespace lc {
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namespace geo {
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class Area;
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}
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}
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using LC_Rect = lc::geo::Area;
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/**
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* This class represents a grid. Grids can be drawn on graphic
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* views and snappers can snap to the grid points.
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*
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* @author Andrew Mustun
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*/
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class RS_Grid
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{
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public:
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RS_Grid(RS_GraphicView* graphicView);
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void updatePointArray();
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/**
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* @return Array of all visible grid points.
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*/
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std::vector<RS_Vector> const& getPoints() const;
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/**
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* \brief the closest grid point
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* \return the closest grid to given point
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* \param coord the given point
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*/
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RS_Vector snapGrid(const RS_Vector& coord) const;
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/**
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* @return Number of visible grid points.
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*/
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int count() const;
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void setCrosshairType(RS2::CrosshairType chType);
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RS2::CrosshairType getCrosshairType() const;
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/**
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* @return Grid info for status widget.
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*/
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QString getInfo() const;
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/**
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* @return a vector of Meta grid positions in X.
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*/
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std::vector<double> const& getMetaX() const;
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/**
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* @return a vector of Meta grid positions in Y.
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*/
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std::vector<double> const& getMetaY() const;
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bool isIsometric() const;
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void setIsometric(bool b);
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RS_Vector getMetaGridWidth() const;
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RS_Vector const& getCellVector() const;
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private:
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//! copy ctor disabled
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RS_Grid(RS_Grid const&) = delete;
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RS_Grid& operator = (RS_Grid const&) = delete;
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//! \{ \brief create grid points
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void createOrthogonalGrid(LC_Rect const& rect, RS_Vector const& gridWidth);
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void createIsometricGrid(LC_Rect const& rect, RS_Vector const& gridWidth);
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//! \}
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//! \{ \brief determine grid width
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RS_Vector getMetricGridWidth(RS_Vector const& userGrid, bool scaleGrid, int minGridSpacing);
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RS_Vector getImperialGridWidth(RS_Vector const& userGrid, bool scaleGrid, int minGridSpacing);
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//! \}
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//! Graphic view this grid is connected to.
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RS_GraphicView* graphicView;
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//! Current grid spacing
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double spacing;
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//! Current meta grid spacing
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double metaSpacing;
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//! Pointer to array of grid points
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std::vector<RS_Vector> pt;
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RS_Vector baseGrid; // the left-bottom grid point
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RS_Vector cellV;// (dx,dy)
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RS_Vector metaGridWidth;
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//! Meta grid positions in X
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std::vector<double> metaX;
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//! Meta grid positions in Y
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std::vector<double> metaY;
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bool isometric;
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RS2::CrosshairType crosshairType;
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};
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#endif
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