src/SketchPlugin/SketchPlugin_ConstraintDistance.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_ConstraintDistance.h"
  22 #include <SketchPlugin_Point.h>
  23 #include <SketchPlugin_Circle.h>
  24 #include <SketchPlugin_Line.h>
  25
  26 #include <SketcherPrs_Tools.h>
  27 #include <SketcherPrs_Factory.h>
  28
  29 #include <GeomAPI_Dir2d.h>
  30 #include <GeomAPI_Lin2d.h>
  31 #include <GeomAPI_Pnt2d.h>
  32 #include <GeomAPI_XY.h>
  33 #include <GeomDataAPI_Point2D.h>
  34
  35 #include <ModelAPI_AttributeDouble.h>
  36 #include <ModelAPI_AttributeInteger.h>
  37 #include <ModelAPI_Data.h>
  38
  39 #include <Config_PropManager.h>
  40
  41 #include <math.h>
  42
  43 const double tolerance = 1e-7;
  44
  45
  46 SketchPlugin_ConstraintDistance::SketchPlugin_ConstraintDistance()
  47 {
  48   myFlyoutUpdate = false;
  49 }
  50
  51 //*************************************************************************************
  52 void SketchPlugin_ConstraintDistance::initAttributes()
  53 {
  54   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::typeId());
  55   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::typeId());
  56   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::typeId());
  57   data()->addAttribute(SketchPlugin_Constraint::ENTITY_B(), ModelAPI_AttributeRefAttr::typeId());
  58   data()->addAttribute(SIGNED(), ModelAPI_AttributeBoolean::typeId());
  59
  60   data()->addAttribute(SketchPlugin_ConstraintDistance::LOCATION_TYPE_ID(),
  61                        ModelAPI_AttributeInteger::typeId());
  62   data()->integer(LOCATION_TYPE_ID())->setValue(SketcherPrs_Tools::LOCATION_AUTOMATIC);
  63 }
  64
  65 void SketchPlugin_ConstraintDistance::colorConfigInfo(std::string& theSection, std::string& theName,
  66                                                       std::string& theDefault)
  67 {
  68   theSection = "Visualization";
  69   theName = "sketch_dimension_color";
  70   theDefault = SKETCH_DIMENSION_COLOR;
  71 }
  72
  73 //*************************************************************************************
  74 void SketchPlugin_ConstraintDistance::execute()
  75 {
  76   std::shared_ptr<ModelAPI_Data> aData = data();
  77   AttributeDoublePtr anAttrValue = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  78       aData->attribute(SketchPlugin_Constraint::VALUE()));
  79
  80   if(anAttrValue->isInitialized())
  81     return;
  82
  83   double aDistance = calculateCurrentDistance();
  84   if(aDistance >= 0)
  85     anAttrValue->setValue(aDistance);
  86 }
  87
  88 //*************************************************************************************
  89 AISObjectPtr SketchPlugin_ConstraintDistance::getAISObject(AISObjectPtr thePrevious)
  90 {
  91   if (!sketch())
  92     return thePrevious;
  93
  94   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this,
  95                                                                       sketch()->coordinatePlane(),
  96                                                                       thePrevious);
  97   return anAIS;
  98 }
  99
 100 double SketchPlugin_ConstraintDistance::calculateCurrentDistance()
 101 {
 102   double aDistance = -1.;
 103
 104   std::shared_ptr<ModelAPI_Data> aData = data();
 105   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 106   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
 107     SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
 108   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
 109       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
 110
 111   if (aPointA.get() && aPointB.get()) {  // both points
 112     aDistance = aPointA->pnt()->distance(aPointB->pnt());
 113   } else {
 114     FeaturePtr aLineFeature;
 115     std::shared_ptr<SketchPlugin_Line> aLine;
 116     if (!aPointA.get() && aPointB.get()) {  //Line and point
 117       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 118       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 119       if (aLine.get()) {
 120         aDistance = aLine->distanceToPoint(aPointB->pnt());
 121       }
 122     } else if (aPointA.get() && !aPointB.get()) {  // Point and line
 123       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 124       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 125       if (aLine.get()) {
 126         aDistance = aLine->distanceToPoint(aPointA->pnt());
 127       }
 128     }
 129   }
 130   return aDistance;
 131 }
 132
 133 bool SketchPlugin_ConstraintDistance::areAttributesInitialized()
 134 {
 135   std::shared_ptr<ModelAPI_Data> aData = data();
 136   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 137   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
 138       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
 139   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
 140       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
 141
 142   if (!aPointA && !aPointB)
 143     return false;
 144   else if (aPointA || aPointB) {
 145     FeaturePtr aLine;
 146     if (!aPointA)
 147       aLine = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 148     else if (!aPointB)
 149       aLine = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 150     else // both points are initialized
 151       return true;
 152
 153     if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 154       return false;
 155   }
 156   return true;
 157 }
 158
 159 void SketchPlugin_ConstraintDistance::attributeChanged(const std::string& theID)
 160 {
 161   if (theID == SketchPlugin_Constraint::ENTITY_A() ||
 162       theID == SketchPlugin_Constraint::ENTITY_B())
 163   {
 164     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 165         ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
 166     if (!aValueAttr->isInitialized()) {
 167       // only if it is not initialized, try to compute the current value
 168       double aDistance = calculateCurrentDistance();
 169       if (aDistance > 0) { // set as value the length of updated references
 170         aValueAttr->setValue(aDistance);
 171       }
 172     }
 173   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 174     // Recalculate flyout point in local coordinates of the distance constraint:
 175     // the X coordinate is a length of projection of the flyout point on the
 176     //                  line binding two distanced points
 177     //                  or a line of projection of the distanced point onto the distanced segment
 178     // the Y coordinate is a distance from the flyout point to the line
 179     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 180         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 181         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 182     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 183
 184     std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 185     std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
 186         data(), SketchPlugin_Constraint::ENTITY_A(), aPlane);
 187     std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
 188         data(), SketchPlugin_Constraint::ENTITY_B(), aPlane);
 189
 190     std::shared_ptr<GeomAPI_XY> aStartPnt;
 191     std::shared_ptr<GeomAPI_XY> aEndPnt;
 192     if (aPointA && aPointB) {
 193       aStartPnt = aPointA->pnt()->xy();
 194       aEndPnt = aPointB->pnt()->xy();
 195     } else if (aPointA) {
 196       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 197           SketchPlugin_Constraint::ENTITY_B());
 198       if (!aLine)
 199         return;
 200       std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointA->pnt();
 201       aStartPnt = aPoint->xy();
 202       aEndPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 203     } else if (aPointB) {
 204       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 205           SketchPlugin_Constraint::ENTITY_A());
 206       if (!aLine)
 207         return;
 208       std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointB->pnt();
 209       aStartPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 210       aEndPnt = aPoint->xy();
 211     } else
 212       return;
 213
 214     if (aEndPnt->distance(aStartPnt) < tolerance)
 215       return;
 216
 217     myFlyoutUpdate = true;
 218     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 219     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aStartPnt);
 220
 221     double X = aFlyoutDir->dot(aLineDir->xy());
 222     double Y = -aFlyoutDir->cross(aLineDir->xy());
 223     aFlyoutAttr->setValue(X, Y);
 224     myFlyoutUpdate = false;
 225   }
 226 }
 227