src/SketchPlugin/SketchPlugin_ConstraintLength.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
   2
   3 // File:    SketchPlugin_ConstraintLength.cpp
   4 // Created: 30 May 2014
   5 // Author:  Artem ZHIDKOV
   6
   7 #include "SketchPlugin_ConstraintLength.h"
   8 #include <SketchPlugin_Line.h>
   9
  10 #include <GeomDataAPI_Point2D.h>
  11
  12 #include <ModelAPI_AttributeDouble.h>
  13 #include <ModelAPI_Data.h>
  14 #include <ModelAPI_Result.h>
  15
  16 #include <GeomDataAPI_Point2D.h>
  17
  18 #include <GeomAPI_Lin2d.h>
  19 #include <GeomAPI_Pnt2d.h>
  20
  21 #include <Config_PropManager.h>
  22
  23 SketchPlugin_ConstraintLength::SketchPlugin_ConstraintLength()
  24 {
  25 }
  26
  27 void SketchPlugin_ConstraintLength::initAttributes()
  28 {
  29   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::type());
  30   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::type());
  31   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::type());
  32 }
  33
  34 void SketchPlugin_ConstraintLength::execute()
  35 {
  36   std::shared_ptr<ModelAPI_AttributeRefAttr> aRef = std::dynamic_pointer_cast<
  37       ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
  38   FeaturePtr aFeature = ModelAPI_Feature::feature(aRef->object());
  39   if (aFeature) {
  40     // set length value
  41     std::shared_ptr<GeomDataAPI_Point2D> aPoint1 = std::dynamic_pointer_cast<
  42         GeomDataAPI_Point2D>(aFeature->data()->attribute(SketchPlugin_Line::START_ID()));
  43     std::shared_ptr<GeomDataAPI_Point2D> aPoint2 = std::dynamic_pointer_cast<
  44         GeomDataAPI_Point2D>(aFeature->data()->attribute(SketchPlugin_Line::END_ID()));
  45
  46     double aLenght = aPoint1->pnt()->distance(aPoint2->pnt());
  47
  48     //std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
  49     //    ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
  50     //if(!aValueAttr->isInitialized()) {
  51     //  aValueAttr->setValue(aLenght);
  52     //}
  53
  54     // the value should to be computed here, not in the getAISObject in order to change the model value
  55     // inside the object transaction. This is important for creating a constraint by preselection.
  56     // The display of the presentation in this case happens after the transaction commit
  57     AttributePtr aFlyOutAttribute = data()->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
  58     if (!aFlyOutAttribute->isInitialized()) {
  59       compute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
  60     }
  61   }
  62 }
  63
  64 bool SketchPlugin_ConstraintLength::compute(const std::string& theAttributeId)
  65 {
  66   if (theAttributeId != SketchPlugin_Constraint::FLYOUT_VALUE_PNT())
  67     return false;
  68
  69   std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
  70   std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
  71   if (!getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint))
  72     return false;
  73
  74   std::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = std::dynamic_pointer_cast<
  75       GeomDataAPI_Point2D>(data()->attribute(theAttributeId));
  76
  77   std::shared_ptr<GeomAPI_Lin2d> aLine =
  78     std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aStartPoint->pnt(), anEndPoint->pnt()));
  79   double aDist = aPoint1->distance(aPoint2)/5.;
  80   std::shared_ptr<GeomAPI_Pnt2d> aFPnt = aLine->shiftedLocation(aDist);
  81   aFlyOutAttr->setValue(aFPnt);
  82
  83   return true;
  84 }
  85
  86 bool SketchPlugin_ConstraintLength::getPoints(
  87   std::shared_ptr<GeomAPI_Pnt>& thePoint1, std::shared_ptr<GeomAPI_Pnt>& thePoint2,
  88   std::shared_ptr<GeomDataAPI_Point2D>& theStartPoint,
  89   std::shared_ptr<GeomDataAPI_Point2D>& theEndPoint)
  90 {
  91   if (!sketch())
  92     return false;
  93   std::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
  94   std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = std::dynamic_pointer_cast<
  95       ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
  96   if (!anAttr)
  97     return false;
  98   FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
  99   if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
 100     return false;
 101   DataPtr aData = aFeature->data();
 102   theStartPoint = std::dynamic_pointer_cast<
 103       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::START_ID()));
 104   theEndPoint = std::dynamic_pointer_cast<
 105       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::END_ID()));
 106   thePoint1 = sketch()->to3D(theStartPoint->x(), theStartPoint->y());
 107   thePoint2 = sketch()->to3D(theEndPoint->x(), theEndPoint->y());
 108   return true;
 109 }
 110
 111 AISObjectPtr SketchPlugin_ConstraintLength::getAISObject(AISObjectPtr thePrevious)
 112 {
 113   std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
 114   std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
 115   if (!getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint))
 116     return thePrevious; // not possible to show length because points are not defined
 117
 118   AttributePtr aFlyOutAttribute = data()->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
 119   if (!aFlyOutAttribute->isInitialized()) {
 120     return thePrevious; // not possible to show length because points are not defined
 121   }
 122   std::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = std::dynamic_pointer_cast<
 123                                                           GeomDataAPI_Point2D>(aFlyOutAttribute);
 124   std::shared_ptr<GeomAPI_Pnt> aFlyoutPnt = sketch()->to3D(aFlyOutAttr->x(), aFlyOutAttr->y());
 125   // value calculation
 126   // TODO: has to be calculated on definition of reference object
 127   double aDistance = aPoint1->distance(aPoint2);
 128   std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 129       ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
 130   double aValue = aDistance;
 131   if (aValueAttr->isInitialized())
 132     aValue = aValueAttr->value();
 133   else
 134     aValueAttr->setValue(aValue);
 135   // End TODO
 136
 137   AISObjectPtr anAIS = thePrevious;
 138   if (!anAIS)
 139     anAIS = AISObjectPtr(new GeomAPI_AISObject);
 140   std::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
 141   anAIS->createDistance(aPoint1, aPoint2, aFlyoutPnt, aPlane, aValue);
 142
 143   // Set color from preferences
 144   std::vector<int> aRGB = Config_PropManager::color("Visualization", "sketch_dimension_color",
 145                                                     SKETCH_DIMENSION_COLOR);
 146   anAIS->setColor(aRGB[0], aRGB[1], aRGB[2]);
 147   return anAIS;
 148 }
 149
 150 void SketchPlugin_ConstraintLength::move(double theDeltaX, double theDeltaY)
 151 {
 152   std::shared_ptr<ModelAPI_Data> aData = data();
 153   if (!aData->isValid())
 154     return;
 155
 156   std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 157       aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 158   aPoint->move(theDeltaX, theDeltaY);
 159 }
 160
 161 void SketchPlugin_ConstraintLength::attributeChanged(const std::string& theID) {
 162   if (theID == SketchPlugin_Constraint::ENTITY_A())
 163   {
 164     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 165       ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
 166     if (!aValueAttr->isInitialized()) { // only if it is not initialized, try to compute the current value
 167       std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
 168       std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
 169       if (getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint)) {
 170         double aLength = aPoint1->distance(aPoint2);
 171         aValueAttr->setValue(aLength);
 172       }
 173     }
 174   }
 175 }