src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
   2
   3 // File:    SketchPlugin_ConstraintDistance.cpp
   4 // Created: 23 May 2014
   5 // Author:  Artem ZHIDKOV
   6
   7 #include "SketchPlugin_ConstraintDistance.h"
   8 #include <SketchPlugin_Point.h>
   9 #include <SketchPlugin_Circle.h>
  10 #include <SketchPlugin_Line.h>
  11
  12 #include <SketcherPrs_Tools.h>
  13 #include <SketcherPrs_Factory.h>
  14
  15 #include <GeomAPI_Dir2d.h>
  16 #include <GeomAPI_Lin2d.h>
  17 #include <GeomAPI_Pnt2d.h>
  18 #include <GeomAPI_XY.h>
  19 #include <GeomDataAPI_Point2D.h>
  20
  21 #include <ModelAPI_AttributeDouble.h>
  22 #include <ModelAPI_Data.h>
  23
  24 #include <Config_PropManager.h>
  25
  26 #include <math.h>
  27
  28 const double tolerance = 1e-7;
  29
  30
  31 SketchPlugin_ConstraintDistance::SketchPlugin_ConstraintDistance()
  32 {
  33   myFlyoutUpdate = false;
  34 }
  35
  36 //*************************************************************************************
  37 void SketchPlugin_ConstraintDistance::initAttributes()
  38 {
  39   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::typeId());
  40   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::typeId());
  41   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::typeId());
  42   data()->addAttribute(SketchPlugin_Constraint::ENTITY_B(), ModelAPI_AttributeRefAttr::typeId());
  43 }
  44
  45 void SketchPlugin_ConstraintDistance::colorConfigInfo(std::string& theSection, std::string& theName,
  46                                                       std::string& theDefault)
  47 {
  48   theSection = "Visualization";
  49   theName = "sketch_dimension_color";
  50   theDefault = SKETCH_DIMENSION_COLOR;
  51 }
  52
  53 //*************************************************************************************
  54 void SketchPlugin_ConstraintDistance::execute()
  55 {
  56   std::shared_ptr<ModelAPI_Data> aData = data();
  57   AttributeDoublePtr anAttrValue = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  58       aData->attribute(SketchPlugin_Constraint::VALUE()));
  59
  60   if(anAttrValue->isInitialized())
  61     return;
  62
  63   double aDistance = calculateCurrentDistance();
  64   if(aDistance >= 0)
  65     anAttrValue->setValue(aDistance);
  66 }
  67
  68 //*************************************************************************************
  69 AISObjectPtr SketchPlugin_ConstraintDistance::getAISObject(AISObjectPtr thePrevious)
  70 {
  71   if (!sketch())
  72     return thePrevious;
  73
  74   AISObjectPtr anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this,
  75                                                                       sketch()->coordinatePlane(),
  76                                                                       thePrevious);
  77   return anAIS;
  78 }
  79
  80 //*************************************************************************************
  81 void SketchPlugin_ConstraintDistance::move(double theDeltaX, double theDeltaY)
  82 {
  83   std::shared_ptr<ModelAPI_Data> aData = data();
  84   if (!aData->isValid())
  85     return;
  86
  87   // Recalculate a shift of flyout point in terms of local coordinates
  88   std::shared_ptr<GeomAPI_XY> aDir(new GeomAPI_XY(theDeltaX, theDeltaY));
  89   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
  90   std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
  91       data(), SketchPlugin_Constraint::ENTITY_A(), aPlane);
  92   std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
  93       data(), SketchPlugin_Constraint::ENTITY_B(), aPlane);
  94
  95   std::shared_ptr<GeomAPI_XY> aStartPnt;
  96   std::shared_ptr<GeomAPI_XY> aEndPnt;
  97   if (aPointA && aPointB) {
  98     aStartPnt = aPointA->pnt()->xy();
  99     aEndPnt = aPointB->pnt()->xy();
 100   } else if (aPointA) {
 101     FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 102         SketchPlugin_Constraint::ENTITY_B());
 103     if (!aLine)
 104       return;
 105     std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointA->pnt();
 106     aStartPnt = aPoint->xy();
 107     aEndPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 108   } else if (aPointB) {
 109     FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 110         SketchPlugin_Constraint::ENTITY_A());
 111     if (!aLine)
 112       return;
 113     std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointB->pnt();
 114     aStartPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 115     aEndPnt = aPoint->xy();
 116   } else
 117     return;
 118
 119   std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 120   double dX = aDir->dot(aLineDir->xy());
 121   double dY = -aDir->cross(aLineDir->xy());
 122
 123   std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 124       aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 125   myFlyoutUpdate = true;
 126   if (aPoint->isInitialized()) {
 127     aPoint->setValue(aPoint->x() + dX, aPoint->y() + dY);
 128   } else {
 129     aPoint->setValue(dX, dY);
 130   }
 131   myFlyoutUpdate = false;
 132 }
 133
 134 double SketchPlugin_ConstraintDistance::calculateCurrentDistance()
 135 {
 136   double aDistance = -1.;
 137
 138   std::shared_ptr<ModelAPI_Data> aData = data();
 139   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 140   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
 141     SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
 142   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
 143       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
 144
 145   if (aPointA.get() && aPointB.get()) {  // both points
 146     aDistance = aPointA->pnt()->distance(aPointB->pnt());
 147   } else {
 148     FeaturePtr aLineFeature;
 149     std::shared_ptr<SketchPlugin_Line> aLine;
 150     if (!aPointA.get() && aPointB.get()) {  //Line and point
 151       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 152       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 153       if (aLine.get()) {
 154         aDistance = aLine->distanceToPoint(aPointB->pnt());
 155       }
 156     } else if (aPointA.get() && !aPointB.get()) {  // Point and line
 157       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 158       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 159       if (aLine.get()) {
 160         aDistance = aLine->distanceToPoint(aPointA->pnt());
 161       }
 162     }
 163   }
 164   return aDistance;
 165 }
 166
 167 void SketchPlugin_ConstraintDistance::attributeChanged(const std::string& theID)
 168 {
 169   if (theID == SketchPlugin_Constraint::ENTITY_A() ||
 170       theID == SketchPlugin_Constraint::ENTITY_B())
 171   {
 172     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 173         ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
 174     if (!aValueAttr->isInitialized()) {
 175       // only if it is not initialized, try to compute the current value
 176       double aDistance = calculateCurrentDistance();
 177       if (aDistance > 0) { // set as value the length of updated references
 178         aValueAttr->setValue(aDistance);
 179       }
 180     }
 181   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 182     myFlyoutUpdate = true;
 183     // Recalculate flyout point in local coordinates of the distance constraint:
 184     // the X coordinate is a length of projection of the flyout point on the
 185     //                  line binding two distanced points
 186     //                  or a line of projection of the distanced point onto the distanced segment
 187     // the Y coordinate is a distance from the flyout point to the line
 188     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 189         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 190         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 191     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 192
 193     std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 194     std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
 195         data(), SketchPlugin_Constraint::ENTITY_A(), aPlane);
 196     std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
 197         data(), SketchPlugin_Constraint::ENTITY_B(), aPlane);
 198
 199     std::shared_ptr<GeomAPI_XY> aStartPnt;
 200     std::shared_ptr<GeomAPI_XY> aEndPnt;
 201     if (aPointA && aPointB) {
 202       aStartPnt = aPointA->pnt()->xy();
 203       aEndPnt = aPointB->pnt()->xy();
 204     } else if (aPointA) {
 205       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 206           SketchPlugin_Constraint::ENTITY_B());
 207       if (!aLine)
 208         return;
 209       std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointA->pnt();
 210       aStartPnt = aPoint->xy();
 211       aEndPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 212     } else if (aPointB) {
 213       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 214           SketchPlugin_Constraint::ENTITY_A());
 215       if (!aLine)
 216         return;
 217       std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointB->pnt();
 218       aStartPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 219       aEndPnt = aPoint->xy();
 220     } else
 221       return;
 222
 223     if (aEndPnt->distance(aStartPnt) < tolerance)
 224       return;
 225
 226     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 227     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aStartPnt);
 228
 229     double X = aFlyoutDir->dot(aLineDir->xy());
 230     double Y = -aFlyoutDir->cross(aLineDir->xy());
 231     aFlyoutAttr->setValue(X, Y);
 232     myFlyoutUpdate = false;
 233   }
 234 }
 235