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 <SketcherPrs_Factory.h>
  13
  14 #include <ModelAPI_AttributeDouble.h>
  15 #include <ModelAPI_Data.h>
  16 #include <ModelAPI_Result.h>
  17
  18 #include <GeomDataAPI_Point2D.h>
  19
  20 #include <GeomAPI_Dir2d.h>
  21 #include <GeomAPI_Lin2d.h>
  22 #include <GeomAPI_Pnt2d.h>
  23 #include <GeomAPI_XY.h>
  24
  25 #include <Config_PropManager.h>
  26
  27 #include <math.h>
  28
  29 const double tolerance = 1e-7;
  30
  31 SketchPlugin_ConstraintLength::SketchPlugin_ConstraintLength()
  32 {
  33   myFlyoutUpdate = false;
  34 }
  35
  36 void SketchPlugin_ConstraintLength::initAttributes()
  37 {
  38   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::typeId());
  39   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::typeId());
  40   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::typeId());
  41 }
  42
  43 void SketchPlugin_ConstraintLength::colorConfigInfo(std::string& theSection, std::string& theName,
  44                                                     std::string& theDefault)
  45 {
  46   theSection = "Visualization";
  47   theName = "sketch_dimension_color";
  48   theDefault = SKETCH_DIMENSION_COLOR;
  49 }
  50
  51 void SketchPlugin_ConstraintLength::execute()
  52 {
  53   std::shared_ptr<ModelAPI_AttributeRefAttr> aRef = std::dynamic_pointer_cast<
  54       ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
  55   FeaturePtr aFeature = ModelAPI_Feature::feature(aRef->object());
  56   if (aFeature) {
  57     // set length value
  58     std::shared_ptr<GeomDataAPI_Point2D> aPoint1 = std::dynamic_pointer_cast<
  59         GeomDataAPI_Point2D>(aFeature->data()->attribute(SketchPlugin_Line::START_ID()));
  60     std::shared_ptr<GeomDataAPI_Point2D> aPoint2 = std::dynamic_pointer_cast<
  61         GeomDataAPI_Point2D>(aFeature->data()->attribute(SketchPlugin_Line::END_ID()));
  62
  63     double aLenght = aPoint1->pnt()->distance(aPoint2->pnt());
  64
  65     //std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
  66     //    ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
  67     //if(!aValueAttr->isInitialized()) {
  68     //  aValueAttr->setValue(aLenght);
  69     //}
  70
  71     // the value should to be computed here, not in the getAISObject in order to change the model value
  72     // inside the object transaction. This is important for creating a constraint by preselection.
  73     // The display of the presentation in this case happens after the transaction commit
  74     AttributePtr aFlyOutAttribute = data()->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
  75     if (!aFlyOutAttribute->isInitialized()) {
  76       compute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
  77     }
  78   }
  79 }
  80
  81 bool SketchPlugin_ConstraintLength::compute(const std::string& theAttributeId)
  82 {
  83   if (theAttributeId != SketchPlugin_Constraint::FLYOUT_VALUE_PNT())
  84     return false;
  85
  86   std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
  87   std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
  88   if (!getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint))
  89     return false;
  90
  91   std::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = std::dynamic_pointer_cast<
  92       GeomDataAPI_Point2D>(data()->attribute(theAttributeId));
  93
  94   std::shared_ptr<GeomAPI_Lin2d> aLine =
  95     std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aStartPoint->pnt(), anEndPoint->pnt()));
  96   if (!aFlyOutAttr->isInitialized() ||
  97       (fabs(aFlyOutAttr->x()) < tolerance && fabs(aFlyOutAttr->y()) < tolerance)) {
  98     double aDist = aPoint1->distance(aPoint2)/5.;
  99     std::shared_ptr<GeomAPI_Pnt2d> aFPnt = aLine->shiftedLocation(aDist);
 100     aFlyOutAttr->setValue(aFPnt);
 101   }
 102
 103   return true;
 104 }
 105
 106 bool SketchPlugin_ConstraintLength::getPoints(
 107   std::shared_ptr<GeomAPI_Pnt>& thePoint1, std::shared_ptr<GeomAPI_Pnt>& thePoint2,
 108   std::shared_ptr<GeomDataAPI_Point2D>& theStartPoint,
 109   std::shared_ptr<GeomDataAPI_Point2D>& theEndPoint)
 110 {
 111   if (!sketch())
 112     return false;
 113   std::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
 114   std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = std::dynamic_pointer_cast<
 115       ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
 116   if (!anAttr)
 117     return false;
 118   FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 119   if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
 120     return false;
 121   DataPtr aData = aFeature->data();
 122   theStartPoint = std::dynamic_pointer_cast<
 123       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::START_ID()));
 124   theEndPoint = std::dynamic_pointer_cast<
 125       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::END_ID()));
 126   thePoint1 = sketch()->to3D(theStartPoint->x(), theStartPoint->y());
 127   thePoint2 = sketch()->to3D(theEndPoint->x(), theEndPoint->y());
 128   return true;
 129 }
 130
 131 AISObjectPtr SketchPlugin_ConstraintLength::getAISObject(AISObjectPtr thePrevious)
 132 {
 133   if (!sketch())
 134     return thePrevious;
 135
 136   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this, sketch()->coordinatePlane(),
 137                                                                       thePrevious);
 138   return anAIS;
 139 }
 140
 141 void SketchPlugin_ConstraintLength::move(double theDeltaX, double theDeltaY)
 142 {
 143   std::shared_ptr<ModelAPI_Data> aData = data();
 144   if (!aData->isValid())
 145     return;
 146
 147   AttributeRefAttrPtr aLineAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 148       attribute(SketchPlugin_Constraint::ENTITY_A()));
 149   if (!aLineAttr || !aLineAttr->isObject())
 150     return;
 151   FeaturePtr aLine = ModelAPI_Feature::feature(aLineAttr->object());
 152   if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 153     return;
 154
 155   // Recalculate a shift of flyout point in terms of local coordinates
 156   std::shared_ptr<GeomAPI_XY> aDir(new GeomAPI_XY(theDeltaX, theDeltaY));
 157   std::shared_ptr<GeomAPI_XY> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 158       aLine->attribute(SketchPlugin_Line::START_ID()))->pnt()->xy();
 159   std::shared_ptr<GeomAPI_XY> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 160       aLine->attribute(SketchPlugin_Line::END_ID()))->pnt()->xy();
 161   std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 162   double dX = aDir->dot(aLineDir->xy());
 163   double dY = -aDir->cross(aLineDir->xy());
 164
 165   myFlyoutUpdate = true;
 166   std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 167       aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 168   aPoint->setValue(aPoint->x() + dX, aPoint->y() + dY);
 169   myFlyoutUpdate = false;
 170 }
 171
 172 void SketchPlugin_ConstraintLength::attributeChanged(const std::string& theID) {
 173   if (theID == SketchPlugin_Constraint::ENTITY_A())
 174   {
 175     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 176       ModelAPI_AttributeDouble>(attribute(SketchPlugin_Constraint::VALUE()));
 177     if (!aValueAttr->isInitialized()) { // only if it is not initialized, try to compute the current value
 178       std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
 179       std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
 180       if (getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint)) {
 181         double aLength = aPoint1->distance(aPoint2);
 182         aValueAttr->setValue(aLength);
 183       }
 184     }
 185   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 186     myFlyoutUpdate = true;
 187     // Recalculate flyout point in local coordinates of the line:
 188     // the X coordinate is a length of projection of the flyout point on the line
 189     // the Y coordinate is a distance from the point to the line
 190     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 191         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 192         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 193     AttributeRefAttrPtr aLineAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 194         attribute(SketchPlugin_Constraint::ENTITY_A()));
 195     if (!aLineAttr || !aLineAttr->isObject())
 196       return;
 197     FeaturePtr aLine = ModelAPI_Feature::feature(aLineAttr->object());
 198     if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 199       return;
 200
 201     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 202     std::shared_ptr<GeomAPI_XY> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 203         aLine->attribute(SketchPlugin_Line::START_ID()))->pnt()->xy();
 204     std::shared_ptr<GeomAPI_XY> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 205         aLine->attribute(SketchPlugin_Line::END_ID()))->pnt()->xy();
 206
 207     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 208     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aStartPnt);
 209     double X = aFlyoutDir->dot(aLineDir->xy());
 210     double Y = -aFlyoutDir->cross(aLineDir->xy());
 211     aFlyoutAttr->setValue(X, Y);
 212     myFlyoutUpdate = false;
 213   }
 214 }