src/SketchPlugin/SketchPlugin_ConstraintDistance.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_ConstraintDistance.h"
  21 #include <SketchPlugin_Point.h>
  22 #include <SketchPlugin_Circle.h>
  23 #include <SketchPlugin_Line.h>
  24
  25 #include <SketcherPrs_Tools.h>
  26 #include <SketcherPrs_Factory.h>
  27
  28 #include <GeomAPI_Dir2d.h>
  29 #include <GeomAPI_Lin2d.h>
  30 #include <GeomAPI_Pnt2d.h>
  31 #include <GeomAPI_XY.h>
  32 #include <GeomDataAPI_Point2D.h>
  33
  34 #include <ModelAPI_AttributeDouble.h>
  35 #include <ModelAPI_AttributeInteger.h>
  36 #include <ModelAPI_Data.h>
  37 #include <ModelAPI_Session.h>
  38 #include <ModelAPI_Validator.h>
  39
  40 #include <Config_PropManager.h>
  41
  42 #include <math.h>
  43
  44 const double tolerance = 1e-7;
  45
  46
  47 SketchPlugin_ConstraintDistance::SketchPlugin_ConstraintDistance()
  48 {
  49   myFlyoutUpdate = false;
  50 }
  51
  52 //*************************************************************************************
  53 void SketchPlugin_ConstraintDistance::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   data()->addAttribute(SketchPlugin_Constraint::ENTITY_B(), ModelAPI_AttributeRefAttr::typeId());
  59   data()->addAttribute(SIGNED(), ModelAPI_AttributeBoolean::typeId());
  60
  61   data()->addAttribute(SketchPlugin_ConstraintDistance::LOCATION_TYPE_ID(),
  62                        ModelAPI_AttributeInteger::typeId());
  63   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), LOCATION_TYPE_ID());
  64 }
  65
  66 void SketchPlugin_ConstraintDistance::colorConfigInfo(std::string& theSection, std::string& theName,
  67                                                       std::string& theDefault)
  68 {
  69   theSection = "Visualization";
  70   theName = "sketch_dimension_color";
  71   theDefault = SKETCH_DIMENSION_COLOR;
  72 }
  73
  74 //*************************************************************************************
  75 void SketchPlugin_ConstraintDistance::execute()
  76 {
  77   std::shared_ptr<ModelAPI_Data> aData = data();
  78   AttributeDoublePtr anAttrValue = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  79       aData->attribute(SketchPlugin_Constraint::VALUE()));
  80
  81   if(anAttrValue->isInitialized())
  82     return;
  83
  84   double aDistance = calculateCurrentDistance();
  85   if(aDistance >= 0)
  86     anAttrValue->setValue(aDistance);
  87 }
  88
  89 //*************************************************************************************
  90 AISObjectPtr SketchPlugin_ConstraintDistance::getAISObject(AISObjectPtr thePrevious)
  91 {
  92   if (!sketch())
  93     return thePrevious;
  94
  95   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this,
  96                                                                       sketch(),
  97                                                                       thePrevious);
  98   return anAIS;
  99 }
 100
 101 double SketchPlugin_ConstraintDistance::calculateCurrentDistance()
 102 {
 103   double aDistance = -1.;
 104
 105   std::shared_ptr<ModelAPI_Data> aData = data();
 106   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 107   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
 108     SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
 109   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
 110       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
 111
 112   if (aPointA.get() && aPointB.get()) {  // both points
 113     aDistance = aPointA->pnt()->distance(aPointB->pnt());
 114   } else {
 115     FeaturePtr aLineFeature;
 116     std::shared_ptr<SketchPlugin_Line> aLine;
 117     if (!aPointA.get() && aPointB.get()) {  //Line and point
 118       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 119       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 120       if (aLine.get()) {
 121         aDistance = aLine->distanceToPoint(aPointB->pnt());
 122       }
 123     } else if (aPointA.get() && !aPointB.get()) {  // Point and line
 124       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 125       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 126       if (aLine.get()) {
 127         aDistance = aLine->distanceToPoint(aPointA->pnt());
 128       }
 129     }
 130   }
 131   return aDistance;
 132 }
 133
 134 bool SketchPlugin_ConstraintDistance::areAttributesInitialized()
 135 {
 136   std::shared_ptr<ModelAPI_Data> aData = data();
 137   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 138   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
 139       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
 140   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
 141       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
 142
 143   if (!aPointA && !aPointB)
 144     return false;
 145   else if (aPointA || aPointB) {
 146     FeaturePtr aLine;
 147     if (!aPointA)
 148       aLine = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 149     else if (!aPointB)
 150       aLine = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 151     else // both points are initialized
 152       return true;
 153
 154     if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 155       return false;
 156   }
 157   return true;
 158 }
 159
 160 void SketchPlugin_ConstraintDistance::attributeChanged(const std::string& theID)
 161 {
 162   if (theID == SketchPlugin_Constraint::ENTITY_A() ||
 163       theID == SketchPlugin_Constraint::ENTITY_B())
 164   {
 165     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 166         ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
 167     if (!aValueAttr->isInitialized()) {
 168       // only if it is not initialized, try to compute the current value
 169       double aDistance = calculateCurrentDistance();
 170       if (aDistance > 0) { // set as value the length of updated references
 171         aValueAttr->setValue(aDistance);
 172       }
 173     }
 174   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 175     // Recalculate flyout point in local coordinates of the distance constraint:
 176     // the X coordinate is a length of projection of the flyout point on the
 177     //                  line binding two distanced points
 178     //                  or a line of projection of the distanced point onto the distanced segment
 179     // the Y coordinate is a distance from the flyout point to the line
 180     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 181         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 182         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 183     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 184
 185     std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 186     std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
 187         data(), SketchPlugin_Constraint::ENTITY_A(), aPlane);
 188     std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
 189         data(), SketchPlugin_Constraint::ENTITY_B(), aPlane);
 190
 191     std::shared_ptr<GeomAPI_XY> aStartPnt;
 192     std::shared_ptr<GeomAPI_XY> aEndPnt;
 193     if (aPointA && aPointB) {
 194       aStartPnt = aPointA->pnt()->xy();
 195       aEndPnt = aPointB->pnt()->xy();
 196     } else if (aPointA) {
 197       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 198           SketchPlugin_Constraint::ENTITY_B());
 199       if (!aLine)
 200         return;
 201       std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointA->pnt();
 202       aStartPnt = aPoint->xy();
 203       aEndPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 204     } else if (aPointB) {
 205       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 206           SketchPlugin_Constraint::ENTITY_A());
 207       if (!aLine)
 208         return;
 209       std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointB->pnt();
 210       aStartPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 211       aEndPnt = aPoint->xy();
 212     } else
 213       return;
 214
 215     if (aEndPnt->distance(aStartPnt) < tolerance)
 216       return;
 217
 218     myFlyoutUpdate = true;
 219     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 220     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aStartPnt);
 221
 222     double X = aFlyoutDir->dot(aLineDir->xy());
 223     double Y = -aFlyoutDir->cross(aLineDir->xy());
 224     aFlyoutAttr->setValue(X, Y);
 225     myFlyoutUpdate = false;
 226   }
 227 }
 228