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 #include <ModelAPI_Session.h>
  39 #include <ModelAPI_Validator.h>
  40
  41 #include <Config_PropManager.h>
  42
  43 #include <math.h>
  44
  45 const double tolerance = 1e-7;
  46
  47
  48 SketchPlugin_ConstraintDistance::SketchPlugin_ConstraintDistance()
  49 {
  50   myFlyoutUpdate = false;
  51 }
  52
  53 //*************************************************************************************
  54 void SketchPlugin_ConstraintDistance::initAttributes()
  55 {
  56   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::typeId());
  57   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::typeId());
  58   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::typeId());
  59   data()->addAttribute(SketchPlugin_Constraint::ENTITY_B(), ModelAPI_AttributeRefAttr::typeId());
  60   data()->addAttribute(SIGNED(), ModelAPI_AttributeBoolean::typeId());
  61
  62   data()->addAttribute(SketchPlugin_ConstraintDistance::LOCATION_TYPE_ID(),
  63                        ModelAPI_AttributeInteger::typeId());
  64   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), LOCATION_TYPE_ID());
  65 }
  66
  67 void SketchPlugin_ConstraintDistance::colorConfigInfo(std::string& theSection, std::string& theName,
  68                                                       std::string& theDefault)
  69 {
  70   theSection = "Visualization";
  71   theName = "sketch_dimension_color";
  72   theDefault = SKETCH_DIMENSION_COLOR;
  73 }
  74
  75 //*************************************************************************************
  76 void SketchPlugin_ConstraintDistance::execute()
  77 {
  78   std::shared_ptr<ModelAPI_Data> aData = data();
  79   AttributeDoublePtr anAttrValue = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  80       aData->attribute(SketchPlugin_Constraint::VALUE()));
  81
  82   if(anAttrValue->isInitialized())
  83     return;
  84
  85   double aDistance = calculateCurrentDistance();
  86   if(aDistance >= 0)
  87     anAttrValue->setValue(aDistance);
  88 }
  89
  90 //*************************************************************************************
  91 AISObjectPtr SketchPlugin_ConstraintDistance::getAISObject(AISObjectPtr thePrevious)
  92 {
  93   if (!sketch())
  94     return thePrevious;
  95
  96   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this,
  97                                                                       sketch()->coordinatePlane(),
  98                                                                       thePrevious);
  99   return anAIS;
 100 }
 101
 102 double SketchPlugin_ConstraintDistance::calculateCurrentDistance()
 103 {
 104   double aDistance = -1.;
 105
 106   std::shared_ptr<ModelAPI_Data> aData = data();
 107   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 108   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
 109     SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
 110   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
 111       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
 112
 113   if (aPointA.get() && aPointB.get()) {  // both points
 114     aDistance = aPointA->pnt()->distance(aPointB->pnt());
 115   } else {
 116     FeaturePtr aLineFeature;
 117     std::shared_ptr<SketchPlugin_Line> aLine;
 118     if (!aPointA.get() && aPointB.get()) {  //Line and point
 119       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 120       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 121       if (aLine.get()) {
 122         aDistance = aLine->distanceToPoint(aPointB->pnt());
 123       }
 124     } else if (aPointA.get() && !aPointB.get()) {  // Point and line
 125       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 126       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 127       if (aLine.get()) {
 128         aDistance = aLine->distanceToPoint(aPointA->pnt());
 129       }
 130     }
 131   }
 132   return aDistance;
 133 }
 134
 135 bool SketchPlugin_ConstraintDistance::areAttributesInitialized()
 136 {
 137   std::shared_ptr<ModelAPI_Data> aData = data();
 138   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 139   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
 140       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
 141   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
 142       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
 143
 144   if (!aPointA && !aPointB)
 145     return false;
 146   else if (aPointA || aPointB) {
 147     FeaturePtr aLine;
 148     if (!aPointA)
 149       aLine = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 150     else if (!aPointB)
 151       aLine = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 152     else // both points are initialized
 153       return true;
 154
 155     if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 156       return false;
 157   }
 158   return true;
 159 }
 160
 161 void SketchPlugin_ConstraintDistance::attributeChanged(const std::string& theID)
 162 {
 163   if (theID == SketchPlugin_Constraint::ENTITY_A() ||
 164       theID == SketchPlugin_Constraint::ENTITY_B())
 165   {
 166     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 167         ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
 168     if (!aValueAttr->isInitialized()) {
 169       // only if it is not initialized, try to compute the current value
 170       double aDistance = calculateCurrentDistance();
 171       if (aDistance > 0) { // set as value the length of updated references
 172         aValueAttr->setValue(aDistance);
 173       }
 174     }
 175   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 176     // Recalculate flyout point in local coordinates of the distance constraint:
 177     // the X coordinate is a length of projection of the flyout point on the
 178     //                  line binding two distanced points
 179     //                  or a line of projection of the distanced point onto the distanced segment
 180     // the Y coordinate is a distance from the flyout point to the line
 181     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 182         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 183         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 184     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 185
 186     std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 187     std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
 188         data(), SketchPlugin_Constraint::ENTITY_A(), aPlane);
 189     std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
 190         data(), SketchPlugin_Constraint::ENTITY_B(), aPlane);
 191
 192     std::shared_ptr<GeomAPI_XY> aStartPnt;
 193     std::shared_ptr<GeomAPI_XY> aEndPnt;
 194     if (aPointA && aPointB) {
 195       aStartPnt = aPointA->pnt()->xy();
 196       aEndPnt = aPointB->pnt()->xy();
 197     } else if (aPointA) {
 198       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 199           SketchPlugin_Constraint::ENTITY_B());
 200       if (!aLine)
 201         return;
 202       std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointA->pnt();
 203       aStartPnt = aPoint->xy();
 204       aEndPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 205     } else if (aPointB) {
 206       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 207           SketchPlugin_Constraint::ENTITY_A());
 208       if (!aLine)
 209         return;
 210       std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointB->pnt();
 211       aStartPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 212       aEndPnt = aPoint->xy();
 213     } else
 214       return;
 215
 216     if (aEndPnt->distance(aStartPnt) < tolerance)
 217       return;
 218
 219     myFlyoutUpdate = true;
 220     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 221     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aStartPnt);
 222
 223     double X = aFlyoutDir->dot(aLineDir->xy());
 224     double Y = -aFlyoutDir->cross(aLineDir->xy());
 225     aFlyoutAttr->setValue(X, Y);
 226     myFlyoutUpdate = false;
 227   }
 228 }
 229