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::execute()
  44 {
  45   std::shared_ptr<ModelAPI_AttributeRefAttr> aRef = std::dynamic_pointer_cast<
  46       ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
  47   FeaturePtr aFeature = ModelAPI_Feature::feature(aRef->object());
  48   if (aFeature) {
  49     // set length value
  50     std::shared_ptr<GeomDataAPI_Point2D> aPoint1 = std::dynamic_pointer_cast<
  51         GeomDataAPI_Point2D>(aFeature->data()->attribute(SketchPlugin_Line::START_ID()));
  52     std::shared_ptr<GeomDataAPI_Point2D> aPoint2 = std::dynamic_pointer_cast<
  53         GeomDataAPI_Point2D>(aFeature->data()->attribute(SketchPlugin_Line::END_ID()));
  54
  55     double aLenght = aPoint1->pnt()->distance(aPoint2->pnt());
  56
  57     //std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
  58     //    ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
  59     //if(!aValueAttr->isInitialized()) {
  60     //  aValueAttr->setValue(aLenght);
  61     //}
  62
  63     // the value should to be computed here, not in the getAISObject in order to change the model value
  64     // inside the object transaction. This is important for creating a constraint by preselection.
  65     // The display of the presentation in this case happens after the transaction commit
  66     AttributePtr aFlyOutAttribute = data()->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
  67     if (!aFlyOutAttribute->isInitialized()) {
  68       compute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
  69     }
  70   }
  71 }
  72
  73 bool SketchPlugin_ConstraintLength::compute(const std::string& theAttributeId)
  74 {
  75   if (theAttributeId != SketchPlugin_Constraint::FLYOUT_VALUE_PNT())
  76     return false;
  77
  78   std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
  79   std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
  80   if (!getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint))
  81     return false;
  82
  83   std::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = std::dynamic_pointer_cast<
  84       GeomDataAPI_Point2D>(data()->attribute(theAttributeId));
  85
  86   std::shared_ptr<GeomAPI_Lin2d> aLine =
  87     std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aStartPoint->pnt(), anEndPoint->pnt()));
  88   if (fabs(aFlyOutAttr->x()) < tolerance && fabs(aFlyOutAttr->y()) < tolerance) {
  89     double aDist = aPoint1->distance(aPoint2)/5.;
  90     std::shared_ptr<GeomAPI_Pnt2d> aFPnt = aLine->shiftedLocation(aDist);
  91     aFlyOutAttr->setValue(aFPnt);
  92   }
  93
  94   return true;
  95 }
  96
  97 bool SketchPlugin_ConstraintLength::getPoints(
  98   std::shared_ptr<GeomAPI_Pnt>& thePoint1, std::shared_ptr<GeomAPI_Pnt>& thePoint2,
  99   std::shared_ptr<GeomDataAPI_Point2D>& theStartPoint,
 100   std::shared_ptr<GeomDataAPI_Point2D>& theEndPoint)
 101 {
 102   if (!sketch())
 103     return false;
 104   std::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
 105   std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = std::dynamic_pointer_cast<
 106       ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
 107   if (!anAttr)
 108     return false;
 109   FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 110   if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
 111     return false;
 112   DataPtr aData = aFeature->data();
 113   theStartPoint = std::dynamic_pointer_cast<
 114       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::START_ID()));
 115   theEndPoint = std::dynamic_pointer_cast<
 116       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::END_ID()));
 117   thePoint1 = sketch()->to3D(theStartPoint->x(), theStartPoint->y());
 118   thePoint2 = sketch()->to3D(theEndPoint->x(), theEndPoint->y());
 119   return true;
 120 }
 121
 122 AISObjectPtr SketchPlugin_ConstraintLength::getAISObject(AISObjectPtr thePrevious)
 123 {
 124   if (!sketch())
 125     return thePrevious;
 126
 127   AISObjectPtr anAIS = thePrevious;
 128   if (!anAIS) {
 129     anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this, sketch()->coordinatePlane());
 130   }
 131   std::vector<int> aRGB = Config_PropManager::color("Visualization", "sketch_dimension_color",
 132                                                     SKETCH_DIMENSION_COLOR);
 133   anAIS->setColor(aRGB[0], aRGB[1], aRGB[2]);
 134   return anAIS;
 135 }
 136
 137 void SketchPlugin_ConstraintLength::move(double theDeltaX, double theDeltaY)
 138 {
 139   std::shared_ptr<ModelAPI_Data> aData = data();
 140   if (!aData->isValid())
 141     return;
 142
 143   AttributeRefAttrPtr aLineAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 144       attribute(SketchPlugin_Constraint::ENTITY_A()));
 145   if (!aLineAttr || !aLineAttr->isObject())
 146     return;
 147   FeaturePtr aLine = ModelAPI_Feature::feature(aLineAttr->object());
 148   if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 149     return;
 150
 151   // Recalculate a shift of flyout point in terms of local coordinates
 152   std::shared_ptr<GeomAPI_XY> aDir(new GeomAPI_XY(theDeltaX, theDeltaY));
 153   std::shared_ptr<GeomAPI_XY> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 154       aLine->attribute(SketchPlugin_Line::START_ID()))->pnt()->xy();
 155   std::shared_ptr<GeomAPI_XY> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 156       aLine->attribute(SketchPlugin_Line::END_ID()))->pnt()->xy();
 157   std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 158   double dX = aDir->dot(aLineDir->xy());
 159   double dY = -aDir->cross(aLineDir->xy());
 160
 161   myFlyoutUpdate = true;
 162   std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 163       aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 164   aPoint->setValue(aPoint->x() + dX, aPoint->y() + dY);
 165   myFlyoutUpdate = false;
 166 }
 167
 168 void SketchPlugin_ConstraintLength::attributeChanged(const std::string& theID) {
 169   if (theID == SketchPlugin_Constraint::ENTITY_A())
 170   {
 171     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 172       ModelAPI_AttributeDouble>(attribute(SketchPlugin_Constraint::VALUE()));
 173     if (!aValueAttr->isInitialized()) { // only if it is not initialized, try to compute the current value
 174       std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
 175       std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
 176       if (getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint)) {
 177         double aLength = aPoint1->distance(aPoint2);
 178         aValueAttr->setValue(aLength);
 179       }
 180     }
 181   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 182     myFlyoutUpdate = true;
 183     // Recalculate flyout point in local coordinates of the line:
 184     // the X coordinate is a length of projection of the flyout point on the line
 185     // the Y coordinate is a distance from the point to the line
 186     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 187         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 188         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 189     AttributeRefAttrPtr aLineAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 190         attribute(SketchPlugin_Constraint::ENTITY_A()));
 191     if (!aLineAttr || !aLineAttr->isObject())
 192       return;
 193     FeaturePtr aLine = ModelAPI_Feature::feature(aLineAttr->object());
 194     if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 195       return;
 196
 197     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 198     std::shared_ptr<GeomAPI_XY> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 199         aLine->attribute(SketchPlugin_Line::START_ID()))->pnt()->xy();
 200     std::shared_ptr<GeomAPI_XY> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 201         aLine->attribute(SketchPlugin_Line::END_ID()))->pnt()->xy();
 202
 203     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 204     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aStartPnt);
 205     double X = aFlyoutDir->dot(aLineDir->xy());
 206     double Y = -aFlyoutDir->cross(aLineDir->xy());
 207     aFlyoutAttr->setValue(X, Y);
 208     myFlyoutUpdate = false;
 209   }
 210 }