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