src/SketchPlugin/SketchPlugin_ConstraintLength.cpp

   1 // Copyright (C) 2014-2019  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 email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include "SketchPlugin_ConstraintLength.h"
  21 #include <SketchPlugin_Line.h>
  22
  23 #include <GeomDataAPI_Point2D.h>
  24
  25 #include <SketcherPrs_Factory.h>
  26 #include <SketcherPrs_Tools.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     if (aPoint1.get() && aPoint2.get()) {
  85       double aLenght = aPoint1->pnt()->distance(aPoint2->pnt());
  86
  87       //std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
  88       //    ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
  89       //if(!aValueAttr->isInitialized()) {
  90       //  aValueAttr->setValue(aLenght);
  91       //}
  92
  93       // the value should to be computed here, not in the getAISObject
  94       // in order to change the model value
  95       // inside the object transaction. This is important for creating a constraint by preselection.
  96       // The display of the presentation in this case happens after the transaction commit
  97       AttributePtr aFlyOutAttribute =
  98         data()->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
  99       if (!aFlyOutAttribute->isInitialized()) {
 100         compute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
 101       }
 102     }
 103   }
 104 }
 105
 106 bool SketchPlugin_ConstraintLength::compute(const std::string& theAttributeId)
 107 {
 108   if (theAttributeId != SketchPlugin_Constraint::FLYOUT_VALUE_PNT())
 109     return false;
 110
 111   std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
 112   std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
 113   if (!getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint))
 114     return false;
 115
 116   std::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = std::dynamic_pointer_cast<
 117       GeomDataAPI_Point2D>(data()->attribute(theAttributeId));
 118
 119   std::shared_ptr<GeomAPI_Lin2d> aLine =
 120     std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aStartPoint->pnt(), anEndPoint->pnt()));
 121   if (!aFlyOutAttr->isInitialized() ||
 122       (fabs(aFlyOutAttr->x()) < tolerance && fabs(aFlyOutAttr->y()) < tolerance)) {
 123     double aDist = aPoint1->distance(aPoint2)/5.;
 124     std::shared_ptr<GeomAPI_Pnt2d> aFPnt = aLine->shiftedLocation(aDist);
 125     aFlyOutAttr->setValue(aFPnt);
 126   }
 127
 128   return true;
 129 }
 130
 131 bool SketchPlugin_ConstraintLength::computeLenghtValue(double& theValue)
 132 {
 133   bool aResult = false;
 134   std::shared_ptr<GeomAPI_Pnt> aPoint1, aPoint2;
 135   std::shared_ptr<GeomDataAPI_Point2D> aStartPoint, anEndPoint;
 136   if (getPoints(aPoint1, aPoint2, aStartPoint, anEndPoint)) {
 137     theValue = aPoint1->distance(aPoint2);
 138     aResult = true;
 139   }
 140   return aResult;
 141 }
 142
 143 bool SketchPlugin_ConstraintLength::getPoints(
 144   std::shared_ptr<GeomAPI_Pnt>& thePoint1, std::shared_ptr<GeomAPI_Pnt>& thePoint2,
 145   std::shared_ptr<GeomDataAPI_Point2D>& theStartPoint,
 146   std::shared_ptr<GeomDataAPI_Point2D>& theEndPoint)
 147 {
 148   if (!sketch())
 149     return false;
 150   std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = std::dynamic_pointer_cast<
 151       ModelAPI_AttributeRefAttr>(data()->attribute(SketchPlugin_Constraint::ENTITY_A()));
 152   if (!anAttr)
 153     return false;
 154   FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 155   if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
 156     return false;
 157   DataPtr aData = aFeature->data();
 158   theStartPoint = std::dynamic_pointer_cast<
 159       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::START_ID()));
 160   theEndPoint = std::dynamic_pointer_cast<
 161       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Line::END_ID()));
 162   thePoint1 = sketch()->to3D(theStartPoint->x(), theStartPoint->y());
 163   thePoint2 = sketch()->to3D(theEndPoint->x(), theEndPoint->y());
 164   return true;
 165 }
 166
 167 AISObjectPtr SketchPlugin_ConstraintLength::getAISObject(AISObjectPtr thePrevious)
 168 {
 169   if (!sketch())
 170     return thePrevious;
 171
 172   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this,
 173     sketch()->coordinatePlane(), thePrevious);
 174   return anAIS;
 175 }
 176
 177 void SketchPlugin_ConstraintLength::attributeChanged(const std::string& theID) {
 178   if (theID == SketchPlugin_Constraint::ENTITY_A())
 179   {
 180     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 181       ModelAPI_AttributeDouble>(attribute(SketchPlugin_Constraint::VALUE()));
 182     if (!aValueAttr->isInitialized()) {
 183       // only if it is not initialized, try to compute the current value
 184       double aLength;
 185       if (computeLenghtValue(aLength))
 186         aValueAttr->setValue(aLength);
 187     }
 188   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 189     // Recalculate flyout point in local coordinates of the line:
 190     // the X coordinate is a length of projection of the flyout point on the line
 191     // the Y coordinate is a distance from the point to the line
 192     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 193         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 194         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 195     AttributeRefAttrPtr aLineAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 196         attribute(SketchPlugin_Constraint::ENTITY_A()));
 197     if (!aLineAttr || !aLineAttr->isObject())
 198       return;
 199     FeaturePtr aLine = ModelAPI_Feature::feature(aLineAttr->object());
 200     if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 201       return;
 202
 203     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 204     std::shared_ptr<GeomAPI_XY> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 205         aLine->attribute(SketchPlugin_Line::START_ID()))->pnt()->xy();
 206     std::shared_ptr<GeomAPI_XY> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 207         aLine->attribute(SketchPlugin_Line::END_ID()))->pnt()->xy();
 208
 209     myFlyoutUpdate = true;
 210     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 211     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aStartPnt);
 212     double X = aFlyoutDir->dot(aLineDir->xy());
 213     double Y = -aFlyoutDir->cross(aLineDir->xy());
 214     aFlyoutAttr->setValue(X, Y);
 215     myFlyoutUpdate = false;
 216   }
 217 }