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 //*************************************************************************************
  46 void SketchPlugin_ConstraintDistance::execute()
  47 {
  48   std::shared_ptr<ModelAPI_Data> aData = data();
  49   AttributeDoublePtr anAttrValue = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  50       aData->attribute(SketchPlugin_Constraint::VALUE()));
  51
  52   if(anAttrValue->isInitialized())
  53     return;
  54
  55   double aDistance = calculateCurrentDistance();
  56   if(aDistance >= 0) {
  57     anAttrValue->setValue(aDistance);
  58   }
  59
  60   // the value should to be computed here, not in the getAISObject in order to change the model value
  61   // inside the object transaction. This is important for creating a constraint by preselection.
  62   // The display of the presentation in this case happens after the transaction commit
  63   std::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = std::dynamic_pointer_cast<
  64       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
  65   if(!aFlyOutAttr->isInitialized())
  66     compute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT());
  67 }
  68
  69 bool SketchPlugin_ConstraintDistance::compute(const std::string& theAttributeId)
  70 {
  71   if (theAttributeId != SketchPlugin_Constraint::FLYOUT_VALUE_PNT())
  72     return false;
  73
  74   if (!sketch())
  75     return false;
  76
  77   std::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = std::dynamic_pointer_cast<
  78                            GeomDataAPI_Point2D>(attribute(theAttributeId));
  79   if (fabs(aFlyOutAttr->x()) >= tolerance || fabs(aFlyOutAttr->y()) >= tolerance)
  80     return false;
  81
  82   DataPtr aData = data();
  83   std::shared_ptr<GeomDataAPI_Point2D> aPoint_A = SketcherPrs_Tools::getFeaturePoint(
  84       aData, SketchPlugin_Constraint::ENTITY_A());
  85   std::shared_ptr<GeomDataAPI_Point2D> aPoint_B = SketcherPrs_Tools::getFeaturePoint(
  86       aData, SketchPlugin_Constraint::ENTITY_B());
  87
  88   std::shared_ptr<GeomAPI_Pnt2d> aPnt_A;
  89   std::shared_ptr<GeomAPI_Pnt2d> aPnt_B;
  90
  91   if (aPoint_A && aPoint_B) {
  92     aPnt_A = aPoint_A->pnt();
  93     aPnt_B = aPoint_B->pnt();
  94   } else if (!aPoint_A && aPoint_B) {
  95     FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(
  96         aData, SketchPlugin_Constraint::ENTITY_A());
  97     if (aLine) {
  98       aPnt_B = aPoint_B->pnt();
  99       aPnt_A = SketcherPrs_Tools::getProjectionPoint(aLine, aPnt_B);
 100     }
 101   } else if (aPoint_A && !aPoint_B) {
 102     FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(
 103         aData, SketchPlugin_Constraint::ENTITY_B());
 104     if (aLine) {
 105       aPnt_A = aPoint_A->pnt();
 106       aPnt_B = SketcherPrs_Tools::getProjectionPoint(aLine, aPnt_A);
 107     }
 108   }
 109   if (!aPnt_A || !aPnt_B)
 110     return false;
 111
 112   std::shared_ptr<GeomAPI_Pnt> aPoint1 = sketch()->to3D(aPnt_A->x(), aPnt_A->y());
 113   std::shared_ptr<GeomAPI_Pnt> aPoint2 = sketch()->to3D(aPnt_B->x(), aPnt_B->y());
 114   // it is not possible to create lin2d on the points with equal position
 115   if (aPoint1->distance(aPoint2) < tolerance)
 116     return false;
 117
 118   std::shared_ptr<GeomAPI_Lin2d> aLine = std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aPnt_A, aPnt_B));
 119   double aDist = aPoint1->distance(aPoint2)/5.;
 120   std::shared_ptr<GeomAPI_Pnt2d> aFPnt = aLine->shiftedLocation(aDist);
 121   aFlyOutAttr->setValue(aFPnt);
 122
 123   return true;
 124 }
 125
 126 //*************************************************************************************
 127 AISObjectPtr SketchPlugin_ConstraintDistance::getAISObject(AISObjectPtr thePrevious)
 128 {
 129   if (!sketch())
 130     return thePrevious;
 131
 132   AISObjectPtr anAIS = thePrevious;
 133   if (!anAIS) {
 134     anAIS = SketcherPrs_Factory::lengthDimensionConstraint(this, sketch()->coordinatePlane());
 135   }
 136   return anAIS;
 137 }
 138
 139 //*************************************************************************************
 140 void SketchPlugin_ConstraintDistance::move(double theDeltaX, double theDeltaY)
 141 {
 142   std::shared_ptr<ModelAPI_Data> aData = data();
 143   if (!aData->isValid())
 144     return;
 145
 146   // Recalculate a shift of flyout point in terms of local coordinates
 147   std::shared_ptr<GeomAPI_XY> aDir(new GeomAPI_XY(theDeltaX, theDeltaY));
 148   std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
 149       data(), SketchPlugin_Constraint::ENTITY_A());
 150   std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
 151       data(), SketchPlugin_Constraint::ENTITY_B());
 152
 153   std::shared_ptr<GeomAPI_XY> aStartPnt;
 154   std::shared_ptr<GeomAPI_XY> aEndPnt;
 155   if (aPointA && aPointB) {
 156     aStartPnt = aPointA->pnt()->xy();
 157     aEndPnt = aPointB->pnt()->xy();
 158   } else if (aPointA) {
 159     FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 160         SketchPlugin_Constraint::ENTITY_B());
 161     if (!aLine)
 162       return;
 163     std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointA->pnt();
 164     aStartPnt = aPoint->xy();
 165     aEndPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 166   } else if (aPointB) {
 167     FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 168         SketchPlugin_Constraint::ENTITY_A());
 169     if (!aLine)
 170       return;
 171     std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointB->pnt();
 172     aStartPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 173     aEndPnt = aPoint->xy();
 174   } else
 175     return;
 176
 177   std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 178   double dX = aDir->dot(aLineDir->xy());
 179   double dY = -aDir->cross(aLineDir->xy());
 180
 181   std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 182       aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 183   myFlyoutUpdate = true;
 184   aPoint->setValue(aPoint->x() + dX, aPoint->y() + dY);
 185   myFlyoutUpdate = false;
 186 }
 187
 188 double SketchPlugin_ConstraintDistance::calculateCurrentDistance() const
 189 {
 190   double aDistance = -1.;
 191
 192   std::shared_ptr<ModelAPI_Data> aData = data();
 193   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
 194     SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A());
 195   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
 196       SketcherPrs_Tools::getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B());
 197
 198   if (aPointA.get() && aPointB.get()) {  // both points
 199     aDistance = aPointA->pnt()->distance(aPointB->pnt());
 200   } else {
 201     FeaturePtr aLineFeature;
 202     std::shared_ptr<SketchPlugin_Line> aLine;
 203     if (!aPointA.get() && aPointB.get()) {  //Line and point
 204       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 205       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 206       if (aLine.get()) {
 207         aDistance = aLine->distanceToPoint(aPointB->pnt());
 208       }
 209     } else if (aPointA.get() && !aPointB.get()) {  // Point and line
 210       aLineFeature = SketcherPrs_Tools::getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 211       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aLineFeature);
 212       if (aLine.get()) {
 213         aDistance = aLine->distanceToPoint(aPointA->pnt());
 214       }
 215     }
 216   }
 217   return aDistance;
 218 }
 219
 220 void SketchPlugin_ConstraintDistance::attributeChanged(const std::string& theID)
 221 {
 222   if (theID == SketchPlugin_Constraint::ENTITY_A() ||
 223       theID == SketchPlugin_Constraint::ENTITY_B())
 224   {
 225     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 226         ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
 227     if (!aValueAttr->isInitialized()) { // only if it is not initialized, try to compute the current value
 228       double aDistance = calculateCurrentDistance();
 229       if (aDistance > 0) { // set as value the length of updated references
 230         aValueAttr->setValue(aDistance);
 231       }
 232     }
 233   } else if (theID == SketchPlugin_Constraint::FLYOUT_VALUE_PNT() && !myFlyoutUpdate) {
 234     myFlyoutUpdate = true;
 235     // Recalculate flyout point in local coordinates of the distance constraint:
 236     // the X coordinate is a length of projection of the flyout point on the line binding two distanced points
 237     //                  or a line of projection of the distanced point onto the distanced segment
 238     // the Y coordinate is a distance from the flyout point to the line
 239     std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 240         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 241         attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 242     std::shared_ptr<GeomAPI_Pnt2d> aFlyoutPnt = aFlyoutAttr->pnt();
 243
 244     std::shared_ptr<GeomDataAPI_Point2D> aPointA = SketcherPrs_Tools::getFeaturePoint(
 245         data(), SketchPlugin_Constraint::ENTITY_A());
 246     std::shared_ptr<GeomDataAPI_Point2D> aPointB = SketcherPrs_Tools::getFeaturePoint(
 247         data(), SketchPlugin_Constraint::ENTITY_B());
 248
 249     std::shared_ptr<GeomAPI_XY> aStartPnt;
 250     std::shared_ptr<GeomAPI_XY> aEndPnt;
 251     if (aPointA && aPointB) {
 252       aStartPnt = aPointA->pnt()->xy();
 253       aEndPnt = aPointB->pnt()->xy();
 254     } else if (aPointA) {
 255       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 256           SketchPlugin_Constraint::ENTITY_B());
 257       if (!aLine)
 258         return;
 259       std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointA->pnt();
 260       aStartPnt = aPoint->xy();
 261       aEndPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 262     } else if (aPointB) {
 263       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(data(),
 264           SketchPlugin_Constraint::ENTITY_A());
 265       if (!aLine)
 266         return;
 267       std::shared_ptr<GeomAPI_Pnt2d> aPoint = aPointB->pnt();
 268       aStartPnt = SketcherPrs_Tools::getProjectionPoint(aLine, aPoint)->xy();
 269       aEndPnt = aPoint->xy();
 270     } else
 271       return;
 272
 273     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 274     std::shared_ptr<GeomAPI_XY> aFlyoutDir = aFlyoutPnt->xy()->decreased(aStartPnt);
 275
 276     double X = aFlyoutDir->dot(aLineDir->xy());
 277     double Y = -aFlyoutDir->cross(aLineDir->xy());
 278     aFlyoutAttr->setValue(X, Y);
 279     myFlyoutUpdate = false;
 280   }
 281 }
 282
 283 bool SketchPlugin_ConstraintDistance::customisePresentation(ResultPtr theResult,
 284                                     AISObjectPtr thePrs,
 285                                     std::shared_ptr<GeomAPI_ICustomPrs> theDefaultPrs)
 286 {
 287   bool isCustomized = false;
 288   std::vector<int> aRGB = Config_PropManager::color("Visualization", "sketch_dimension_color",
 289                                                     SKETCH_DIMENSION_COLOR);
 290   isCustomized = thePrs->setColor(aRGB[0], aRGB[1], aRGB[2]);
 291
 292   return isCustomized;
 293 }
 294