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lib/engine/rs_polyline.h

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+/****************************************************************************
+**
+** This file is part of the LibreCAD project, a 2D CAD program
+**
+** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
+** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
+**
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file gpl-2.0.txt included in the
+** packaging of this file.
+**
+** 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, write to the Free Software
+** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+**
+** This copyright notice MUST APPEAR in all copies of the script!
+**
+**********************************************************************/
+
+
+#ifndef RS_POLYLINE_H
+#define RS_POLYLINE_H
+
+#include "rs_entity.h"
+#include "rs_entitycontainer.h"
+
+
+
+/**
+ * Holds the data that defines a polyline.
+ */
+struct RS_PolylineData : public RS_Flags {
+	RS_PolylineData();
+	~RS_PolylineData()=default;
+	RS_PolylineData(const RS_Vector& startpoint,
+                    const RS_Vector& endpoint,
+					bool closed);
+
+    RS_Vector startpoint;
+    RS_Vector endpoint;
+};
+
+std::ostream& operator << (std::ostream& os, const RS_PolylineData& pd);
+
+/**
+ * Class for a poly line entity (lots of connected lines and arcs).
+ *
+ * @author Andrew Mustun
+ */
+class RS_Polyline : public RS_EntityContainer {
+public:
+	RS_Polyline(RS_EntityContainer* parent=nullptr);
+    RS_Polyline(RS_EntityContainer* parent,
+                const RS_PolylineData& d);
+
+	RS_Entity* clone() const override;
+
+    /**	@return RS2::EntityPolyline */
+	RS2::EntityType rtti() const  override{
+        return RS2::EntityPolyline;
+    }
+
+    /** @return Copy of data that defines the polyline. */
+    RS_PolylineData getData() const {
+        return data;
+    }
+
+    /** sets a new start point of the polyline */
+	void setStartpoint(RS_Vector const& v);
+
+    /** @return Start point of the entity */
+	RS_Vector getStartpoint() const override;
+
+    /** sets a new end point of the polyline */
+	void setEndpoint(RS_Vector const& v);
+
+    // set layer for polyline and sub-entities
+    void setLayer(const QString& name);
+    void setLayer(RS_Layer* l);
+
+    /** @return End point of the entity */
+	RS_Vector getEndpoint() const override;
+
+	double getClosingBulge() const;
+
+	void updateEndpoints();
+
+    /** @return true if the polyline is closed. false otherwise */
+	bool isClosed() const;
+
+	void setClosed(bool cl);
+
+    void setClosed(bool cl, double bulge);//RLZ: rewrite this:
+
+	RS_VectorSolutions getRefPoints() const override;
+	RS_Vector getMiddlePoint(void)const override{
+            return RS_Vector(false);
+	}
+	RS_Vector getNearestRef( const RS_Vector& coord,
+									 double* dist = nullptr) const override;
+	RS_Vector getNearestSelectedRef( const RS_Vector& coord,
+											 double* dist = nullptr) const override;
+	RS_Entity* addVertex(const RS_Vector& v,
+                double bulge=0.0, bool prepend=false);
+
+	void appendVertexs(const std::vector< std::pair<RS_Vector, double> >& vl);
+
+	void setNextBulge(double bulge) {
+                nextBulge = bulge;
+        }
+	void addEntity(RS_Entity* entity) override;
+	//void addSegment(RS_Entity* entity) override;
+	void removeLastVertex();
+	void endPolyline();
+
+	//void reorder() override;
+
+	bool offset(const RS_Vector& coord, const double& distance) override;
+	void move(const RS_Vector& offset) override;
+	void rotate(const RS_Vector& center, const double& angle) override;
+	void rotate(const RS_Vector& center, const RS_Vector& angleVector) override;
+	void scale(const RS_Vector& center, const RS_Vector& factor) override;
+	void mirror(const RS_Vector& axisPoint1, const RS_Vector& axisPoint2) override;
+	void stretch(const RS_Vector& firstCorner,
+                         const RS_Vector& secondCorner,
+						 const RS_Vector& offset) override;
+
+	void moveRef(const RS_Vector& ref, const RS_Vector& offset) override;
+	void revertDirection() override;
+
+
+	void draw(RS_Painter* painter, RS_GraphicView* view,
+					  double& patternOffset) override;
+
+    friend std::ostream& operator << (std::ostream& os, const RS_Polyline& l);
+
+protected:
+	RS_Entity* createVertex(const RS_Vector& v,
+                double bulge=0.0, bool prepend=false);
+
+protected:
+    RS_PolylineData data;
+    RS_Entity* closingEntity;
+	double nextBulge;
+};
+
+#endif