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