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lib/engine/rs_hatch.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_HATCH_H
+#define RS_HATCH_H
+
+#include "rs_entity.h"
+#include "rs_entitycontainer.h"
+
+/**
+ * Holds the data that defines a hatch entity.
+ */
+struct RS_HatchData {
+    /**
+     * Default constructor. Leaves the data object uninitialized.
+     */
+	RS_HatchData() = default;
+	~RS_HatchData() = default;
+
+        /**
+         * @param solid true: solid fill, false: pattern.
+         * @param scale Pattern scale or spacing.
+         * @param pattern Pattern name.
+         */
+	RS_HatchData(bool solid,
+				 double scale,
+				 double angle,
+				 const QString& pattern);
+
+
+	bool solid;
+	double scale;
+	double angle;
+	QString pattern;
+};
+
+std::ostream& operator << (std::ostream& os, const RS_HatchData& td);
+
+
+
+/**
+ * Class for a hatch entity.
+ *
+ * @author Andrew Mustun
+ */
+class RS_Hatch : public RS_EntityContainer {
+public:
+    enum RS_HatchError { HATCH_UNDEFINED = -1,
+                         HATCH_OK,
+                         HATCH_INVALID_CONTOUR,
+                         HATCH_PATTERN_NOT_FOUND,
+                         HATCH_TOO_SMALL,
+                         HATCH_AREA_TOO_BIG };
+
+	RS_Hatch() = default;
+
+    RS_Hatch(RS_EntityContainer* parent,
+            const RS_HatchData& d);
+
+	RS_Entity* clone() const override;
+
+    /**	@return RS2::EntityHatch */
+	RS2::EntityType rtti() const override{
+        return RS2::EntityHatch;
+    }
+
+    /**
+     * @return true: if this is a hatch with lines (hatch pattern),
+     *         false: if this is filled with a solid color.
+     */
+	bool isContainer() const override;
+
+    /** @return Copy of data that defines the hatch. */
+    RS_HatchData getData() const {
+        return data;
+    }
+
+        bool validate();
+
+		int countLoops() const;
+
+        /** @return true if this is a solid fill. false if it is a pattern hatch. */
+        bool isSolid() const {
+                return data.solid;
+        }
+        void setSolid(bool solid) {
+                data.solid = solid;
+        }
+
+        QString getPattern() {
+                return data.pattern;
+        }
+        void setPattern(const QString& pattern) {
+                data.pattern = pattern;
+        }
+
+        double getScale() {
+                return data.scale;
+        }
+        void setScale(double scale) {
+                data.scale = scale;
+        }
+
+        double getAngle() {
+                return data.angle;
+        }
+        void setAngle(double angle) {
+                data.angle = angle;
+        }
+		double getTotalArea();
+
+		void calculateBorders() override;
+		void update() override;
+        int getUpdateError() {
+                return updateError;
+        }
+        void activateContour(bool on);
+
+		void draw(RS_Painter* painter, RS_GraphicView* view,
+						  double& patternOffset) override;
+
+		//	double getLength() {
+        //		return -1.0;
+        //	}
+
+		double getDistanceToPoint(const RS_Vector& coord,
+                                          RS_Entity** entity = NULL,
+                                          RS2::ResolveLevel level = RS2::ResolveNone,
+										  double solidDist = RS_MAXDOUBLE) const 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;
+
+        friend std::ostream& operator << (std::ostream& os, const RS_Hatch& p);
+
+protected:
+        RS_HatchData data;
+        RS_EntityContainer* hatch;
+        bool updateRunning;
+        bool needOptimization;
+        int  updateError;
+};
+
+#endif