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 (fabs(aFlyOutAttr->x()) < tolerance && fabs(aFlyOutAttr->y()) < tolerance) {
  97     double aDist = aPoint1->distance(aPoint2)/5.;
  98     std::shared_ptr<GeomAPI_Pnt2d> aFPnt = aLine->shiftedLocation(aDist);
  99     aFlyOutAttr->setValue(aFPnt);
 100   }
 101
 102   return true;
 103 }
 104
 105 bool SketchPlugin_ConstraintLength::getPoints(
 106   std::shared_ptr<GeomAPI_Pnt>& thePoint1, std::shared_ptr<GeomAPI_Pnt>& thePoint2,
 107   std::shared_ptr<GeomDataAPI_Point2D>& theStartPoint,
 108   std::shared_ptr<GeomDataAPI_Point2D>& theEndPoint)
 109 {
 110   if (!sketch())
 111     return false;
 112   std::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
 113   std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = std::dynamic_pointer_cast<
 114       ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
 115   if (!anAttr)
 116     return false;
 117   FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 118   if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
 119     return false;
 120   DataPtr aData = aFeature->data();
 121   theStartPoint = std::dynamic_pointer_cast<
 122       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::START_ID()));
 123   theEndPoint = std::dynamic_pointer_cast<
 124       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::END_ID()));
 125   thePoint1 = sketch()->to3D(theStartPoint->x(), theStartPoint->y());
 126   thePoint2 = sketch()->to3D(theEndPoint->x(), theEndPoint->y());
 127   return true;
 128 }
 129
 130 AISObjectPtr SketchPlugin_ConstraintLength::getAISObject(AISObjectPtr thePrevious)
 131 {
 132   if (!sketch())
 133     return thePrevious;
 134
 135   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this, sketch()->coordinatePlane(),
 136                                                                       thePrevious);
 137   return anAIS;
 138 }
 139
 140 void SketchPlugin_ConstraintLength::move(double theDeltaX, double theDeltaY)
 141 {
 142   std::shared_ptr<ModelAPI_Data> aData = data();
 143   if (!aData->isValid())
 144     return;
 145
 146   AttributeRefAttrPtr aLineAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 147       attribute(SketchPlugin_Constraint::ENTITY_A()));
 148   if (!aLineAttr || !aLineAttr->isObject())
 149     return;
 150   FeaturePtr aLine = ModelAPI_Feature::feature(aLineAttr->object());
 151   if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 152     return;
 153
 154   // Recalculate a shift of flyout point in terms of local coordinates
 155   std::shared_ptr<GeomAPI_XY> aDir(new GeomAPI_XY(theDeltaX, theDeltaY));
 156   std::shared_ptr<GeomAPI_XY> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 157       aLine->attribute(SketchPlugin_Line::START_ID()))->pnt()->xy();
 158   std::shared_ptr<GeomAPI_XY> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 159       aLine->attribute(SketchPlugin_Line::END_ID()))->pnt()->xy();
 160   std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 161   double dX = aDir->dot(aLineDir->xy());
 162   double dY = -aDir->cross(aLineDir->xy());
 163
 164   myFlyoutUpdate = true;
 165   std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 166       aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 167   aPoint->setValue(aPoint->x() + dX, aPoint->y() + dY);
 168   myFlyoutUpdate = false;
 169 }
 170
 171 void SketchPlugin_ConstraintLength::attributeChanged(const std::string& theID) {
 172   if (theID == SketchPlugin_Constraint::ENTITY_A())
 173   {
 174     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 175       ModelAPI_AttributeDouble>(attribute(SketchPlugin_Constraint::VALUE()));
 176     if (!aValueAttr->isInitialized()) { // only if it is not initialized, try to compute the current value
 177       std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
 178       std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
 179       if (getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint)) {
 180         double aLength = aPoint1->distance(aPoint2);
 181         aValueAttr->setValue(aLength);
 182       }
 183     }
 184   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 185     myFlyoutUpdate = true;
 186     // Recalculate flyout point in local coordinates of the line:
 187     // the X coordinate is a length of projection of the flyout point on the line
 188     // the Y coordinate is a distance from the point to the line
 189     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 190         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 191         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 192     AttributeRefAttrPtr aLineAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 193         attribute(SketchPlugin_Constraint::ENTITY_A()));
 194     if (!aLineAttr || !aLineAttr->isObject())
 195       return;
 196     FeaturePtr aLine = ModelAPI_Feature::feature(aLineAttr->object());
 197     if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 198       return;
 199
 200     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 201     std::shared_ptr<GeomAPI_XY> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 202         aLine->attribute(SketchPlugin_Line::START_ID()))->pnt()->xy();
 203     std::shared_ptr<GeomAPI_XY> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 204         aLine->attribute(SketchPlugin_Line::END_ID()))->pnt()->xy();
 205
 206     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 207     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aStartPnt);
 208     double X = aFlyoutDir->dot(aLineDir->xy());
 209     double Y = -aFlyoutDir->cross(aLineDir->xy());
 210     aFlyoutAttr->setValue(X, Y);
 211     myFlyoutUpdate = false;
 212   }
 213 }