+ // update radius and angle
+ AttributeDoublePtr aRadiusAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
+ data()->attribute(RADIUS_ID()));
+ aRadiusAttr->setValue(aRadius);
+ AttributeDoublePtr anAngleAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
+ data()->attribute(ANGLE_ID()));
+ std::shared_ptr<GeomAPI_Circ2d> aCircle(new GeomAPI_Circ2d(aCenter, aStart));
+ double aStartParam, aEndParam;
+ aCircle->parameter(aStart, paramTolerance, aStartParam);
+ aCircle->parameter(anEnd, paramTolerance, aEndParam);
+ adjustPeriod(aStartParam);
+ adjustPeriod(aEndParam);
+ if (aTypeAttr->value() == ARC_TYPE_THREE_POINTS()) { // use the passed point for the angle calculation
+ std::shared_ptr<GeomDataAPI_Point2D> aPassedAttr =
+ std::dynamic_pointer_cast<GeomDataAPI_Point2D>(data()->attribute(PASSED_POINT_ID()));
+ double aPassedParam;
+ aCircle->parameter(aPassedAttr->pnt(), paramTolerance, aPassedParam);
+ adjustPeriod(aPassedParam);
+ double aNewAngle = aPassedParam >= aStartParam && aPassedParam <= aEndParam ?
+ ((aEndParam - aStartParam) * 180.0 / PI) :
+ ((aEndParam - aStartParam - 2.0 * PI) * 180.0 / PI);
+ if (!anAngleAttr->isInitialized() || fabs(aNewAngle - anAngleAttr->value()) > tolerance)
+ anAngleAttr->setValue(aNewAngle);
+ } else {
+ double aNewAngle = (aEndParam - aStartParam) * 180.0 / PI;
+ if (!anAngleAttr->isInitialized() || fabs(aNewAngle - anAngleAttr->value()) > tolerance)
+ anAngleAttr->setValue(aNewAngle);
+ }
+
+ // calculate arc aperture and change the Inversed flag if needed
+ AttributeBooleanPtr isInversed =
+ std::dynamic_pointer_cast<ModelAPI_AttributeBoolean>(attribute(INVERSED_ID()));
+ double aParameterNew = aEndParam - aStartParam;
+ if (0 <= myParamBefore && myParamBefore <= PI / 2.0 &&
+ PI * 1.5 <= aParameterNew && aParameterNew <= PI * 2.0)
+ isInversed->setValue(true);
+ else if (PI * 1.5 <= myParamBefore && myParamBefore <= PI * 2.0 &&
+ 0 <= aParameterNew && aParameterNew <= PI / 2.0)
+ isInversed->setValue(false);
+ myParamBefore = aParameterNew;
+
+ // do not need to inform that other parameters were changed in this basis mode: these arguments
+ // change is enough
+ data()->blockSendAttributeUpdated(false, false);
+ return;
+ }
+
+ if (theID == PASSED_POINT_ID()) {
+ data()->blockSendAttributeUpdated(true);
+
+ std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
+ int aNbInitialized = 0;
+ for (int i = 1; i <= 3; ++i) {
+ std::shared_ptr<GeomDataAPI_Point2D> aCurPnt =
+ std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(POINT_ID(i)));
+ if (aCurPnt->isInitialized())
+ aPoints[aNbInitialized++] = aCurPnt->pnt();
+ }
+
+ if (aNbInitialized == 3) {
+ std::shared_ptr<GeomAPI_Circ2d> aCircle(
+ new GeomAPI_Circ2d(aPoints[0], aPoints[1], aPoints[2]));
+
+ std::shared_ptr<GeomAPI_Pnt2d> aCenter = aCircle->center();
+ if (aCenter) {
+ aCenterAttr->setValue(aCenter);
+ }
+ }
+ data()->blockSendAttributeUpdated(false);
+ return;
+ }
+
+ if (theID == RADIUS_ID()) {
+ if (!aStartAttr->isInitialized() || !anEndAttr->isInitialized() || !aCenterAttr->isInitialized())
+ return;
+ // move center and passed point
+ std::shared_ptr<GeomAPI_Pnt2d> aStart = aStartAttr->pnt();
+ std::shared_ptr<GeomAPI_Pnt2d> anEnd = anEndAttr->pnt();
+ std::shared_ptr<GeomAPI_Pnt2d> aCenter = aCenterAttr->pnt();
+ if (aStart->distance(aCenter) < tolerance || anEnd->distance(aCenter) < tolerance)
+ return;
+ AttributeDoublePtr aRadiusAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
+ data()->attribute(RADIUS_ID()));
+ double aRadius = aRadiusAttr->value();
+
+ data()->blockSendAttributeUpdated(true);
+ std::shared_ptr<GeomAPI_Dir2d> aStartDir(new GeomAPI_Dir2d(aStart->xy()->decreased(aCenter->xy())));
+ std::shared_ptr<GeomAPI_XY> aNewStart = aStartDir->xy()->multiplied(aRadius)->added(aCenter->xy());
+ aStartAttr->setValue(aNewStart->x(), aNewStart->y());
+ std::shared_ptr<GeomAPI_Dir2d> anEndDir(new GeomAPI_Dir2d(anEnd->xy()->decreased(aCenter->xy())));
+ std::shared_ptr<GeomAPI_XY> aNewEnd = anEndDir->xy()->multiplied(aRadius)->added(aCenter->xy());
+ anEndAttr->setValue(aNewEnd->x(), aNewEnd->y());
+ data()->blockSendAttributeUpdated(false);
+ return;
+ }
+ if (theID == ANGLE_ID()) {
+ if (!aStartAttr->isInitialized() || !aCenterAttr->isInitialized())
+ return;
+ AttributeDoublePtr anAngleAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
+ data()->attribute(ANGLE_ID()));
+ data()->blockSendAttributeUpdated(true);
+ // move end point and passed point
+ std::shared_ptr<GeomAPI_XY> aCenter = aCenterAttr->pnt()->xy();
+ double anAngle = anAngleAttr->value() * PI / 180.0;
+ double sinA = sin(anAngle);
+ double cosA = cos(anAngle);
+ std::shared_ptr<GeomAPI_XY> aStartDir = aStartAttr->pnt()->xy()->decreased(aCenter);
+ std::shared_ptr<GeomAPI_XY> aDir(new GeomAPI_XY(
+ aStartDir->x() * cosA - aStartDir->y() * sinA,
+ aStartDir->x() * sinA + aStartDir->y() * cosA));
+ anEndAttr->setValue(aCenter->x() + aDir->x(), aCenter->y() + aDir->y());
+ data()->blockSendAttributeUpdated(false);
+ return;