+ // check the execute() was called and the shape was built
+ if (!lastResult())
+ return;
+
+ data()->blockSendAttributeUpdated(true);
+ std::shared_ptr<GeomDataAPI_Point2D> aFirstPnt =
+ std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(FIRST_POINT_ID()));
+ std::shared_ptr<GeomDataAPI_Point2D> aSecondPnt =
+ std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(SECOND_POINT_ID()));
+ std::shared_ptr<GeomDataAPI_Point2D> aThirdPnt =
+ std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(THIRD_POINT_ID()));
+ double aRadius = aRadiusAttr->value();
+ aFirstPnt->setValue(aCenterAttr->x() + aRadius, aCenterAttr->y());
+ aSecondPnt->setValue(aCenterAttr->x(), aCenterAttr->y() + aRadius);
+ aThirdPnt->setValue(aCenterAttr->x() - aRadius, aCenterAttr->y());
+ data()->blockSendAttributeUpdated(false);
+ }
+ else if (theID == FIRST_POINT_ID() || theID == SECOND_POINT_ID() || theID == THIRD_POINT_ID()) {
+ std::string aType = std::dynamic_pointer_cast<ModelAPI_AttributeString>(
+ data()->attribute(CIRCLE_TYPE()))->value();
+ if (aType == CIRCLE_TYPE_CENTER_AND_RADIUS())
+ return;
+
+ 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();
+ }
+
+ std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
+ AttributeDoublePtr aRadiusAttr =
+ std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(data()->attribute(RADIUS_ID()));
+
+ if (aNbInitialized == 1)
+ aCenterAttr->setValue(aPoints[0]->x(), aPoints[0]->y());
+ else if (aNbInitialized == 2) {
+ std::shared_ptr<GeomAPI_XY> aCoord =
+ aPoints[0]->xy()->added(aPoints[1]->xy())->multiplied(0.5);
+ double aRadius = aPoints[0]->distance(aPoints[1]) * 0.5;
+ aCenterAttr->setValue(aCoord->x(), aCoord->y());
+ aRadiusAttr->setValue(aRadius);
+ } else {
+ 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) {
+ double aRadius = aCircle->radius();
+ aCenterAttr->setValue(aCenter->x(), aCenter->y());
+ aRadiusAttr->setValue(aRadius);
+ }
+ }
+
+ data()->blockSendAttributeUpdated(false);
+ }