src/SketchPlugin/SketchPlugin_ConstraintLength.cpp

   1 // Copyright (C) 2014-2017  CEA/DEN, EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or
  18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
  19 //
  20
  21 #include "SketchPlugin_ConstraintLength.h"
  22 #include <SketchPlugin_Line.h>
  23
  24 #include <GeomDataAPI_Point2D.h>
  25
  26 #include <SketcherPrs_Factory.h>
  27
  28 #include <ModelAPI_AttributeDouble.h>
  29 #include <ModelAPI_AttributeInteger.h>
  30 #include <ModelAPI_Data.h>
  31 #include <ModelAPI_Result.h>
  32 #include <ModelAPI_Session.h>
  33 #include <ModelAPI_Validator.h>
  34
  35 #include <GeomDataAPI_Point2D.h>
  36
  37 #include <GeomAPI_Dir2d.h>
  38 #include <GeomAPI_Lin2d.h>
  39 #include <GeomAPI_Pnt2d.h>
  40 #include <GeomAPI_XY.h>
  41
  42 #include <Config_PropManager.h>
  43
  44 #include <math.h>
  45
  46 const double tolerance = 1e-7;
  47
  48 SketchPlugin_ConstraintLength::SketchPlugin_ConstraintLength()
  49 {
  50   myFlyoutUpdate = false;
  51 }
  52
  53 void SketchPlugin_ConstraintLength::initAttributes()
  54 {
  55   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::typeId());
  56   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::typeId());
  57   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::typeId());
  58
  59   data()->addAttribute(SketchPlugin_ConstraintLength::LOCATION_TYPE_ID(),
  60                        ModelAPI_AttributeInteger::typeId());
  61   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), LOCATION_TYPE_ID());
  62 }
  63
  64 void SketchPlugin_ConstraintLength::colorConfigInfo(std::string& theSection, std::string& theName,
  65                                                     std::string& theDefault)
  66 {
  67   theSection = "Visualization";
  68   theName = "sketch_dimension_color";
  69   theDefault = SKETCH_DIMENSION_COLOR;
  70 }
  71
  72 void SketchPlugin_ConstraintLength::execute()
  73 {
  74   std::shared_ptr<ModelAPI_AttributeRefAttr> aRef = std::dynamic_pointer_cast<
  75       ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
  76   FeaturePtr aFeature = ModelAPI_Feature::feature(aRef->object());
  77   if (aFeature) {
  78     // set length value
  79     std::shared_ptr<GeomDataAPI_Point2D> aPoint1 = std::dynamic_pointer_cast<
  80         GeomDataAPI_Point2D>(aFeature->data()->attribute(SketchPlugin_Line::START_ID()));
  81     std::shared_ptr<GeomDataAPI_Point2D> aPoint2 = std::dynamic_pointer_cast<
  82         GeomDataAPI_Point2D>(aFeature->data()->attribute(SketchPlugin_Line::END_ID()));
  83
  84     double aLenght = aPoint1->pnt()->distance(aPoint2->pnt());
  85
  86     //std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
  87     //    ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
  88     //if(!aValueAttr->isInitialized()) {
  89     //  aValueAttr->setValue(aLenght);
  90     //}
  91
  92     // the value should to be computed here, not in the getAISObject
  93     // in order to change the model value
  94     // inside the object transaction. This is important for creating a constraint by preselection.
  95     // The display of the presentation in this case happens after the transaction commit
  96     AttributePtr aFlyOutAttribute =
  97       data()->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
  98     if (!aFlyOutAttribute->isInitialized()) {
  99       compute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
 100     }
 101   }
 102 }
 103
 104 bool SketchPlugin_ConstraintLength::compute(const std::string& theAttributeId)
 105 {
 106   if (theAttributeId != SketchPlugin_Constraint::FLYOUT_VALUE_PNT())
 107     return false;
 108
 109   std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
 110   std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
 111   if (!getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint))
 112     return false;
 113
 114   std::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = std::dynamic_pointer_cast<
 115       GeomDataAPI_Point2D>(data()->attribute(theAttributeId));
 116
 117   std::shared_ptr<GeomAPI_Lin2d> aLine =
 118     std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aStartPoint->pnt(), anEndPoint->pnt()));
 119   if (!aFlyOutAttr->isInitialized() ||
 120       (fabs(aFlyOutAttr->x()) < tolerance && fabs(aFlyOutAttr->y()) < tolerance)) {
 121     double aDist = aPoint1->distance(aPoint2)/5.;
 122     std::shared_ptr<GeomAPI_Pnt2d> aFPnt = aLine->shiftedLocation(aDist);
 123     aFlyOutAttr->setValue(aFPnt);
 124   }
 125
 126   return true;
 127 }
 128
 129 bool SketchPlugin_ConstraintLength::computeLenghtValue(double& theValue)
 130 {
 131   bool aResult = false;
 132   std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
 133   std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
 134   if (getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint)) {
 135     theValue = aPoint1->distance(aPoint2);
 136     aResult = true;
 137   }
 138   return aResult;
 139 }
 140
 141 bool SketchPlugin_ConstraintLength::getPoints(
 142   std::shared_ptr<GeomAPI_Pnt>& thePoint1, std::shared_ptr<GeomAPI_Pnt>& thePoint2,
 143   std::shared_ptr<GeomDataAPI_Point2D>& theStartPoint,
 144   std::shared_ptr<GeomDataAPI_Point2D>& theEndPoint)
 145 {
 146   if (!sketch())
 147     return false;
 148   std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = std::dynamic_pointer_cast<
 149       ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
 150   if (!anAttr)
 151     return false;
 152   FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 153   if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
 154     return false;
 155   DataPtr aData = aFeature->data();
 156   theStartPoint = std::dynamic_pointer_cast<
 157       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::START_ID()));
 158   theEndPoint = std::dynamic_pointer_cast<
 159       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::END_ID()));
 160   thePoint1 = sketch()->to3D(theStartPoint->x(), theStartPoint->y());
 161   thePoint2 = sketch()->to3D(theEndPoint->x(), theEndPoint->y());
 162   return true;
 163 }
 164
 165 AISObjectPtr SketchPlugin_ConstraintLength::getAISObject(AISObjectPtr thePrevious)
 166 {
 167   if (!sketch())
 168     return thePrevious;
 169
 170   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this,
 171     sketch()->coordinatePlane(), thePrevious);
 172   return anAIS;
 173 }
 174
 175 void SketchPlugin_ConstraintLength::attributeChanged(const std::string& theID) {
 176   if (theID == SketchPlugin_Constraint::ENTITY_A())
 177   {
 178     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 179       ModelAPI_AttributeDouble>(attribute(SketchPlugin_Constraint::VALUE()));
 180     if (!aValueAttr->isInitialized()) {
 181       // only if it is not initialized, try to compute the current value
 182       double aLength;
 183       if (computeLenghtValue(aLength))
 184         aValueAttr->setValue(aLength);
 185     }
 186   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 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     myFlyoutUpdate = true;
 208     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 209     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aStartPnt);
 210     double X = aFlyoutDir->dot(aLineDir->xy());
 211     double Y = -aFlyoutDir->cross(aLineDir->xy());
 212     aFlyoutAttr->setValue(X, Y);
 213     myFlyoutUpdate = false;
 214   }
 215 }