src/SketchPlugin/SketchPlugin_ConstraintDistanceHorizontal.cpp

   1 // Copyright (C) 2017  CEA/DEN, EDF R&D
   2 //
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  20
  21 // File:    SketchPlugin_ConstraintDistanceHorizontal.cpp
  22 // Created: 2 May 2017
  23 // Author:  Artem ZHIDKOV
  24
  25 #include <SketchPlugin_ConstraintDistanceHorizontal.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 #include <ModelAPI_Session.h>
  37 #include <ModelAPI_Validator.h>
  38
  39 const double tolerance = 1e-7;
  40
  41
  42 SketchPlugin_ConstraintDistanceHorizontal::SketchPlugin_ConstraintDistanceHorizontal()
  43   : SketchPlugin_ConstraintDistance()
  44 {
  45 }
  46
  47 //*************************************************************************************
  48 void SketchPlugin_ConstraintDistanceHorizontal::initAttributes()
  49 {
  50   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::typeId());
  51   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::typeId());
  52   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::typeId());
  53   data()->addAttribute(SketchPlugin_Constraint::ENTITY_B(), ModelAPI_AttributeRefAttr::typeId());
  54
  55   data()->addAttribute(SketchPlugin_ConstraintDistanceHorizontal::LOCATION_TYPE_ID(),
  56                        ModelAPI_AttributeInteger::typeId());
  57   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), LOCATION_TYPE_ID());
  58 }
  59
  60 //*************************************************************************************
  61 void SketchPlugin_ConstraintDistanceHorizontal::execute()
  62 {
  63   AttributeDoublePtr anAttrValue = real(SketchPlugin_Constraint::VALUE());
  64   if (anAttrValue->isInitialized() || !areAttributesInitialized())
  65     return;
  66
  67   double aDistance = calculateCurrentDistance();
  68   anAttrValue->setValue(aDistance);
  69 }
  70
  71 //*************************************************************************************
  72 AISObjectPtr SketchPlugin_ConstraintDistanceHorizontal::getAISObject(AISObjectPtr thePrevious)
  73 {
  74   if (!sketch())
  75     return thePrevious;
  76
  77   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this,
  78                                                                       sketch()->coordinatePlane(),
  79                                                                       thePrevious);
  80   return anAIS;
  81 }
  82
  83 double SketchPlugin_ConstraintDistanceHorizontal::calculateCurrentDistance()
  84 {
  85   std::shared_ptr<ModelAPI_Data> aData = data();
  86   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
  87   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
  88     SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
  89   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
  90       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
  91
  92   return aPointB->x() - aPointA->x();
  93 }
  94
  95 void SketchPlugin_ConstraintDistanceHorizontal::attributeChanged(const std::string& theID)
  96 {
  97   if (theID == SketchPlugin_Constraint::ENTITY_A() ||
  98       theID == SketchPlugin_Constraint::ENTITY_B())
  99   {
 100     AttributeDoublePtr aValueAttr = real(SketchPlugin_Constraint::VALUE());
 101     if (!aValueAttr->isInitialized() && areAttributesInitialized()) {
 102       // only if it is not initialized, try to compute the current value
 103       double aDistance = calculateCurrentDistance();
 104       aValueAttr->setValue(aDistance);
 105     }
 106   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 107     // Recalculate flyout point in local coordinates of the distance constraint:
 108     // the X coordinate is a length of projection of the flyout point on the
 109     //                  line binding two distanced points
 110     //                  or a line of projection of the distanced point onto the distanced segment
 111     // the Y coordinate is a distance from the flyout point to the line
 112     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 113         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 114         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 115     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 116
 117     std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 118     std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
 119         data(), SketchPlugin_Constraint::ENTITY_A(), aPlane);
 120     std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
 121         data(), SketchPlugin_Constraint::ENTITY_B(), aPlane);
 122
 123     std::shared_ptr<GeomAPI_XY> aStartPnt = aPointA->pnt()->xy();
 124     std::shared_ptr<GeomAPI_XY> aEndPnt = aPointB->pnt()->xy();
 125     if (aEndPnt->distance(aStartPnt) < tolerance)
 126       return;
 127
 128     myFlyoutUpdate = true;
 129     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aEndPnt);
 130     double X = aFlyoutDir->x(); // Dot on OX axis
 131     double Y = aFlyoutDir->y(); // Cross to OX axis
 132     aFlyoutAttr->setValue(X, Y);
 133     myFlyoutUpdate = false;
 134   }
 135 }