init

2024-03-06 14:54:30 +08:00
commit edac2715f0
1525 changed files with 809982 additions and 0 deletions
--- a/lib/information/rs_information.h
+++ b/lib/information/rs_information.h
@@ -0,0 +1,109 @@
+/****************************************************************************
+**
+** 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_INFORMATION_H
+#define RS_INFORMATION_H
+
+#include "rs.h"
+
+class RS_Ellipse;
+class RS_Entity;
+class RS_EntityContainer;
+class RS_Vector;
+class RS_VectorSolutions;
+class RS_Arc;
+class RS_Circle;
+class RS_Line;
+
+/**
+ * Class for getting information about entities. This includes
+ * also things like the end point of an element which is 
+ * nearest to a given coordinate.
+ * There's no interaction handled in this class.
+ * This class is bound to an entity container.
+ *
+ * @author Andrew Mustun
+ */
+class RS_Information {
+public:
+    RS_Information(RS_EntityContainer& entityContainer);
+
+	static bool isDimension(RS2::EntityType type);
+	static bool isTrimmable(RS_Entity* e);
+	static bool isTrimmable(RS_Entity* e1, RS_Entity* e2);
+
+    RS_Vector getNearestEndpoint(const RS_Vector& point,
+								 double* dist = nullptr) const;
+    RS_Vector getNearestPointOnEntity(const RS_Vector& point,
+	                                  bool onEntity=true, 
+									  double* dist = nullptr,
+									  RS_Entity** entity=nullptr) const;
+    RS_Entity* getNearestEntity(const RS_Vector& point,
+								double* dist = nullptr,
+                                RS2::ResolveLevel level=RS2::ResolveAll) const;
+
+
+	static RS_VectorSolutions getIntersection(RS_Entity const* e1,
+			RS_Entity const* e2,
+            bool onEntities = false);
+
+    static RS_VectorSolutions getIntersectionLineLine(RS_Line* e1,
+            RS_Line* e2);
+
+    static RS_VectorSolutions getIntersectionLineArc(RS_Line* line,
+            RS_Arc* arc);
+
+	static RS_VectorSolutions getIntersectionArcArc(RS_Entity const* e1,
+			RS_Entity const* e2);
+
+	static RS_VectorSolutions getIntersectionEllipseEllipse(
+			RS_Ellipse const* e1,
+			RS_Ellipse const* e2);
+    static RS_VectorSolutions getIntersectionArcEllipse(RS_Arc* e1,
+            RS_Ellipse* e2);
+    static RS_VectorSolutions getIntersectionCircleEllipse(RS_Circle* e1,
+            RS_Ellipse* e2);
+    
+	static RS_VectorSolutions getIntersectionEllipseLine(RS_Line* line,
+            RS_Ellipse* ellipse);
+	/**
+	 * @brief createQuadrilateral form quadrilateral from 4 straight lines
+	 * @param container contains 4 straight lines
+	 * @return ordered vertices of quadrilateral formed by the 4 lines
+	 */
+	static RS_VectorSolutions createQuadrilateral(const RS_EntityContainer& container);
+
+    static bool isPointInsideContour(const RS_Vector& point,
+                                     RS_EntityContainer* contour,
+									 bool* onContour=nullptr);
+	
+private:
+    RS_EntityContainer* container;
+};
+
+
+
+#endif