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, sketch()->coordinatePlane(),
  75                                                                       thePrevious);
  76   return anAIS;
  77 }
  78
  79 //*************************************************************************************
  80 void SketchPlugin_ConstraintDistance::move(double theDeltaX, double theDeltaY)
  81 {
  82   std::shared_ptr<ModelAPI_Data> aData = data();
  83   if (!aData->isValid())
  84     return;
  85
  86   // Recalculate a shift of flyout point in terms of local coordinates
  87   std::shared_ptr<GeomAPI_XY> aDir(new GeomAPI_XY(theDeltaX, theDeltaY));
  88   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
  89   std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
  90       data(), SketchPlugin_Constraint::ENTITY_A(), aPlane);
  91   std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
  92       data(), SketchPlugin_Constraint::ENTITY_B(), aPlane);
  93
  94   std::shared_ptr<GeomAPI_XY> aStartPnt;
  95   std::shared_ptr<GeomAPI_XY> aEndPnt;
  96   if (aPointA && aPointB) {
  97     aStartPnt = aPointA->pnt()->xy();
  98     aEndPnt = aPointB->pnt()->xy();
  99   } else if (aPointA) {
 100     FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 101         SketchPlugin_Constraint::ENTITY_B());
 102     if (!aLine)
 103       return;
 104     std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointA->pnt();
 105     aStartPnt = aPoint->xy();
 106     aEndPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 107   } else if (aPointB) {
 108     FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 109         SketchPlugin_Constraint::ENTITY_A());
 110     if (!aLine)
 111       return;
 112     std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointB->pnt();
 113     aStartPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 114     aEndPnt = aPoint->xy();
 115   } else
 116     return;
 117
 118   std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 119   double dX = aDir->dot(aLineDir->xy());
 120   double dY = -aDir->cross(aLineDir->xy());
 121
 122   std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 123       aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 124   myFlyoutUpdate = true;
 125   aPoint->setValue(aPoint->x() + dX, aPoint->y() + dY);
 126   myFlyoutUpdate = false;
 127 }
 128
 129 double SketchPlugin_ConstraintDistance::calculateCurrentDistance()
 130 {
 131   double aDistance = -1.;
 132
 133   std::shared_ptr<ModelAPI_Data> aData = data();
 134   std::shared_ptr<GeomAPI_Ax3> aPlane = SketchPlugin_Sketch::plane(sketch());
 135   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
 136     SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A(), aPlane);
 137   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
 138       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B(), aPlane);
 139
 140   if (aPointA.get() && aPointB.get()) {  // both points
 141     aDistance = aPointA->pnt()->distance(aPointB->pnt());
 142   } else {
 143     FeaturePtr aLineFeature;
 144     std::shared_ptr<SketchPlugin_Line> aLine;
 145     if (!aPointA.get() && aPointB.get()) {  //Line and point
 146       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 147       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 148       if (aLine.get()) {
 149         aDistance = aLine->distanceToPoint(aPointB->pnt());
 150       }
 151     } else if (aPointA.get() && !aPointB.get()) {  // Point and line
 152       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 153       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 154       if (aLine.get()) {
 155         aDistance = aLine->distanceToPoint(aPointA->pnt());
 156       }
 157     }
 158   }
 159   return aDistance;
 160 }
 161
 162 void SketchPlugin_ConstraintDistance::attributeChanged(const std::string& theID)
 163 {
 164   if (theID == SketchPlugin_Constraint::ENTITY_A() ||
 165       theID == SketchPlugin_Constraint::ENTITY_B())
 166   {
 167     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 168         ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
 169     if (!aValueAttr->isInitialized()) { // 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     myFlyoutUpdate = true;
 177     // Recalculate flyout point in local coordinates of the distance constraint:
 178     // the X coordinate is a length of projection of the flyout point on the 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     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