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   1 /****************************************************************************
   2 ** $Id: rs_information.h 1926 2004-11-20 00:42:21Z andrew $
   3 **
   4 ** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
   5 **
   6 ** This file is part of the qcadlib Library project.
   7 **
   8 ** This file may be distributed and/or modified under the terms of the
   9 ** GNU General Public License version 2 as published by the Free Software
  10 ** Foundation and appearing in the file LICENSE.GPL included in the
  11 ** packaging of this file.
  12 **
  13 ** Licensees holding valid qcadlib Professional Edition licenses may use
  14 ** this file in accordance with the qcadlib Commercial License
  15 ** Agreement provided with the Software.
  16 **
  17 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  18 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  19 **
  20 ** See http://www.ribbonsoft.com for further details.
  21 **
  22 ** Contact info@ribbonsoft.com if any conditions of this licensing are
  23 ** not clear to you.
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  25 **********************************************************************/
  26
  27 #ifndef RS_INFORMATION_H
  28 #define RS_INFORMATION_H
  29
  30 #include "rs_entitycontainer.h"
  31 #include "rs_line.h"
  32 #include "rs_arc.h"
  33
  34
  35
  36 /**
  37  * Class for getting information about entities. This includes
  38  * also things like the end point of an element which is
  39  * nearest to a given coordinate.
  40  * There's no interaction handled in this class.
  41  * This class is bound to an entity container.
  42  *
  43  * @author Andrew Mustun
  44  */
  45 class RS_Information {
  46 public:
  47     RS_Information(RS_EntityContainer& entityContainer);
  48
  49         static bool isDimension(RS2::EntityType type);
  50         static bool isTrimmable(RS_Entity* e);
  51         static bool isTrimmable(RS_Entity* e1, RS_Entity* e2);
  52
  53     Vector getNearestEndpoint(const Vector& point,
  54                                  double* dist = NULL) const;
  55     Vector getNearestPointOnEntity(const Vector& point,
  56                                           bool onEntity=true,
  57                                       double* dist = NULL,
  58                                       RS_Entity** entity=NULL) const;
  59     RS_Entity* getNearestEntity(const Vector& point,
  60                                 double* dist = NULL,
  61                                 RS2::ResolveLevel level=RS2::ResolveAll) const;
  62
  63     static VectorSolutions getIntersection(RS_Entity* e1,
  64             RS_Entity* e2,
  65             bool onEntities = false);
  66
  67     static VectorSolutions getIntersectionLineLine(RS_Line* e1,
  68             RS_Line* e2);
  69
  70     static VectorSolutions getIntersectionLineArc(RS_Line* line,
  71             RS_Arc* arc);
  72
  73     static VectorSolutions getIntersectionArcArc(RS_Arc* e1,
  74             RS_Arc* e2);
  75
  76         static VectorSolutions getIntersectionLineEllipse(RS_Line* line,
  77             RS_Ellipse* ellipse);
  78
  79     static bool isPointInsideContour(const Vector& point,
  80                                      RS_EntityContainer* contour,
  81                                                                          bool* onContour=NULL);
  82
  83 protected:
  84     RS_EntityContainer* container;
  85 };
  86
  87
  88
  89 #endif