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 }
  56
  57 //*************************************************************************************
  58 void SketchPlugin_ConstraintDistanceVertical::execute()
  59 {
  60   AttributeDoublePtr anAttrValue = real(SketchPlugin_Constraint::VALUE());
  61   if (anAttrValue->isInitialized() || !areAttributesInitialized())
  62     return;
  63
  64   double aDistance = calculateCurrentDistance();
  65   anAttrValue->setValue(aDistance);
  66 }
  67
  68 //*************************************************************************************
  69 AISObjectPtr SketchPlugin_ConstraintDistanceVertical::getAISObject(AISObjectPtr thePrevious)
  70 {
  71   if (!sketch())
  72     return thePrevious;
  73
  74   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this,
  75                                                                       sketch()->coordinatePlane(),
  76                                                                       thePrevious);
  77   return anAIS;
  78 }
  79
  80 double SketchPlugin_ConstraintDistanceVertical::calculateCurrentDistance()
  81 {
  82   std::shared_ptr<ModelAPI_Data> aData = data();
  83   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
  84   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
  85     SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
  86   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
  87       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
  88
  89   return aPointB->y() - aPointA->y();
  90 }
  91
  92 void SketchPlugin_ConstraintDistanceVertical::attributeChanged(const std::string& theID)
  93 {
  94   if (theID == SketchPlugin_Constraint::ENTITY_A() ||
  95       theID == SketchPlugin_Constraint::ENTITY_B())
  96   {
  97     AttributeDoublePtr aValueAttr = real(SketchPlugin_Constraint::VALUE());
  98     if (!aValueAttr->isInitialized() && areAttributesInitialized()) {
  99       // only if it is not initialized, try to compute the current value
 100       double aDistance = calculateCurrentDistance();
 101       aValueAttr->setValue(aDistance);
 102     }
 103   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 104     // Recalculate flyout point in local coordinates of the distance constraint:
 105     // the X coordinate is a length of projection of the flyout point on the
 106     //                  line binding two distanced points
 107     //                  or a line of projection of the distanced point onto the distanced segment
 108     // the Y coordinate is a distance from the flyout point to the line
 109     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 110         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 111         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 112     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 113
 114     std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 115     std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
 116         data(), SketchPlugin_Constraint::ENTITY_A(), aPlane);
 117     std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
 118         data(), SketchPlugin_Constraint::ENTITY_B(), aPlane);
 119
 120     std::shared_ptr<GeomAPI_XY> aStartPnt = aPointA->pnt()->xy();
 121     std::shared_ptr<GeomAPI_XY> aEndPnt = aPointB->pnt()->xy();
 122
 123     if (aEndPnt->distance(aStartPnt) < tolerance)
 124       return;
 125
 126     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aEndPnt);
 127     myFlyoutUpdate = true;
 128     double X =  aFlyoutDir->y(); // Dot on OY axis
 129     double Y = -aFlyoutDir->x(); // Cross to OY axis
 130     aFlyoutAttr->setValue(X, Y);
 131     myFlyoutUpdate = false;
 132   }
 133 }