src/SketchPlugin/SketchPlugin_ConstraintDistanceVertical.cpp

   1 // Copyright (C) 2017  CEA/DEN, EDF R&D
   2 //
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  20
  21 // File:    SketchPlugin_ConstraintDistanceVertical.cpp
  22 // Created: 10 May 2017
  23 // Author:  Artem ZHIDKOV
  24
  25 #include <SketchPlugin_ConstraintDistanceVertical.h>
  26
  27 #include <SketcherPrs_Tools.h>
  28 #include <SketcherPrs_Factory.h>
  29
  30 #include <GeomAPI_Dir2d.h>
  31 #include <GeomAPI_XY.h>
  32 #include <GeomDataAPI_Point2D.h>
  33
  34 #include <ModelAPI_AttributeDouble.h>
  35 #include <ModelAPI_AttributeInteger.h>
  36
  37 const double tolerance = 1e-7;
  38
  39
  40 SketchPlugin_ConstraintDistanceVertical::SketchPlugin_ConstraintDistanceVertical()
  41   : SketchPlugin_ConstraintDistance()
  42 {
  43 }
  44
  45 //*************************************************************************************
  46 void SketchPlugin_ConstraintDistanceVertical::initAttributes()
  47 {
  48   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::typeId());
  49   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::typeId());
  50   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::typeId());
  51   data()->addAttribute(SketchPlugin_Constraint::ENTITY_B(), ModelAPI_AttributeRefAttr::typeId());
  52
  53   data()->addAttribute(SketchPlugin_ConstraintDistanceVertical::LOCATION_TYPE_ID(),
  54                        ModelAPI_AttributeInteger::typeId());
  55   data()->integer(LOCATION_TYPE_ID())->setValue(SketcherPrs_Tools::LOCATION_AUTOMATIC);
  56 }
  57
  58 //*************************************************************************************
  59 void SketchPlugin_ConstraintDistanceVertical::execute()
  60 {
  61   AttributeDoublePtr anAttrValue = real(SketchPlugin_Constraint::VALUE());
  62   if (anAttrValue->isInitialized() || !areAttributesInitialized())
  63     return;
  64
  65   double aDistance = calculateCurrentDistance();
  66   anAttrValue->setValue(aDistance);
  67 }
  68
  69 //*************************************************************************************
  70 AISObjectPtr SketchPlugin_ConstraintDistanceVertical::getAISObject(AISObjectPtr thePrevious)
  71 {
  72   if (!sketch())
  73     return thePrevious;
  74
  75   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this,
  76                                                                       sketch()->coordinatePlane(),
  77                                                                       thePrevious);
  78   return anAIS;
  79 }
  80
  81 double SketchPlugin_ConstraintDistanceVertical::calculateCurrentDistance()
  82 {
  83   std::shared_ptr<ModelAPI_Data> aData = data();
  84   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
  85   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
  86     SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
  87   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
  88       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
  89
  90   return aPointB->y() - aPointA->y();
  91 }
  92
  93 void SketchPlugin_ConstraintDistanceVertical::attributeChanged(const std::string& theID)
  94 {
  95   if (theID == SketchPlugin_Constraint::ENTITY_A() ||
  96       theID == SketchPlugin_Constraint::ENTITY_B())
  97   {
  98     AttributeDoublePtr aValueAttr = real(SketchPlugin_Constraint::VALUE());
  99     if (!aValueAttr->isInitialized() && areAttributesInitialized()) {
 100       // only if it is not initialized, try to compute the current value
 101       double aDistance = calculateCurrentDistance();
 102       aValueAttr->setValue(aDistance);
 103     }
 104   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 105     // Recalculate flyout point in local coordinates of the distance constraint:
 106     // the X coordinate is a length of projection of the flyout point on the
 107     //                  line binding two distanced points
 108     //                  or a line of projection of the distanced point onto the distanced segment
 109     // the Y coordinate is a distance from the flyout point to the line
 110     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 111         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 112         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 113     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 114
 115     std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 116     std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
 117         data(), SketchPlugin_Constraint::ENTITY_A(), aPlane);
 118     std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
 119         data(), SketchPlugin_Constraint::ENTITY_B(), aPlane);
 120
 121     std::shared_ptr<GeomAPI_XY> aStartPnt = aPointA->pnt()->xy();
 122     std::shared_ptr<GeomAPI_XY> aEndPnt = aPointB->pnt()->xy();
 123
 124     if (aEndPnt->distance(aStartPnt) < tolerance)
 125       return;
 126
 127     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aEndPnt);
 128     myFlyoutUpdate = true;
 129     double X =  aFlyoutDir->y(); // Dot on OY axis
 130     double Y = -aFlyoutDir->x(); // Cross to OY axis
 131     aFlyoutAttr->setValue(X, Y);
 132     myFlyoutUpdate = false;
 133   }
 134 }