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