+ aData->blockSendAttributeUpdated(true);
+
+ myStartUpdate = true;
+ myEndUpdate = true;
+ std::shared_ptr<GeomDataAPI_Point2D> aPoint2 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
+ aData->attribute(SketchPlugin_Arc::START_ID()));
+ aPoint2->move(theDeltaX, theDeltaY);
+
+ std::shared_ptr<GeomDataAPI_Point2D> aPoint3 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
+ aData->attribute(SketchPlugin_Arc::END_ID()));
+ aPoint3->move(theDeltaX, theDeltaY);
+ myStartUpdate = false;
+ myEndUpdate = false;
+
+ std::shared_ptr<GeomDataAPI_Point2D> aPoint1 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
+ aData->attribute(SketchPlugin_Arc::CENTER_ID()));
+ aPoint1->move(theDeltaX, theDeltaY);
+
+ std::shared_ptr<GeomDataAPI_Point2D> aPassedPoint =
+ std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(PASSED_POINT_ID()));
+ aPassedPoint->move(theDeltaX, theDeltaY);
+ aData->blockSendAttributeUpdated(false);
+}
+
+bool SketchPlugin_Arc::isFixed() {
+ return data()->selection(EXTERNAL_ID())->context().get() != NULL;
+}
+
+bool SketchPlugin_Arc::isFeatureValid()
+{
+ AttributeStringPtr anArcTypeAttr =
+ std::dynamic_pointer_cast<ModelAPI_AttributeString>(data()->attribute(ARC_TYPE()));
+ if (!anArcTypeAttr)
+ return false;
+ std::string anArcType = anArcTypeAttr->value();
+
+ std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::CENTER_ID()));
+ std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::START_ID()));
+ std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::END_ID()));
+ std::shared_ptr<GeomDataAPI_Point2D> aPassedAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(PASSED_POINT_ID()));
+
+ bool isValid = false;
+ if (anArcType == ARC_TYPE_THREE_POINTS())
+ isValid = aStartAttr->isInitialized() && anEndAttr->isInitialized() && aPassedAttr->isInitialized();
+ else
+ isValid = aCenterAttr->isInitialized() && aStartAttr->isInitialized() && anEndAttr->isInitialized();
+
+ return isValid;
+}
+
+static inline void adjustPeriod(double& theParam)
+{
+ static const double PERIOD = 2.0 * PI;
+ while (theParam < 0.0) theParam += PERIOD;
+ while (theParam >= PERIOD) theParam -= PERIOD;
+}
+
+static inline void calculateArcAngleRadius(
+ const std::shared_ptr<GeomAPI_Circ2d>& theCircle,
+ const std::shared_ptr<GeomAPI_Pnt2d>& theStartPoint,
+ const std::shared_ptr<GeomAPI_Pnt2d>& theEndPoint,
+ const std::shared_ptr<GeomAPI_Pnt2d>& thePassedPoint,
+ AttributeDoublePtr theAngleAttr,
+ AttributeDoublePtr theRadiusAttr)
+{
+ double aStartParam, aEndParam, aPassedParam;
+ theCircle->parameter(theStartPoint, paramTolerance, aStartParam);
+ theCircle->parameter(theEndPoint, paramTolerance, aEndParam);
+ theCircle->parameter(thePassedPoint, paramTolerance, aPassedParam);
+ adjustPeriod(aStartParam);
+ adjustPeriod(aEndParam);
+ adjustPeriod(aPassedParam);
+
+ if (aPassedParam >= aStartParam && aPassedParam <= aEndParam)
+ theAngleAttr->setValue((aEndParam - aStartParam) * 180.0 / PI);
+ else
+ theAngleAttr->setValue((aEndParam - aStartParam - 2.0 * PI) * 180.0 / PI);
+ theRadiusAttr->setValue(theCircle->radius());
+}
+
+static inline void calculatePassedPoint(
+ const std::shared_ptr<GeomAPI_Pnt2d>& theCenter,
+ const std::shared_ptr<GeomAPI_Pnt2d>& theStartPoint,
+ const std::shared_ptr<GeomAPI_Pnt2d>& theEndPoint,
+ bool theArcReversed,
+ std::shared_ptr<GeomDataAPI_Point2D> thePassedPoint)
+{
+ std::shared_ptr<GeomAPI_Dir2d> aStartDir(new GeomAPI_Dir2d(
+ theStartPoint->xy()->decreased(theCenter->xy())));
+ std::shared_ptr<GeomAPI_Dir2d> aEndDir(new GeomAPI_Dir2d(
+ theEndPoint->xy()->decreased(theCenter->xy())));
+ std::shared_ptr<GeomAPI_XY> aMidDirXY = aStartDir->xy()->added(aEndDir->xy());
+ if (aMidDirXY->dot(aMidDirXY) < tolerance * tolerance) {
+ // start and end directions are opposite, so middle direction will be orthogonal
+ aMidDirXY->setX(-aStartDir->y());
+ aMidDirXY->setY(aStartDir->x());
+ }
+ std::shared_ptr<GeomAPI_Dir2d> aMidDir(new GeomAPI_Dir2d(aMidDirXY));
+ if ((aStartDir->cross(aMidDir) > 0) ^ !theArcReversed)
+ aMidDir->reverse();
+
+ double aRadius = theCenter->distance(theStartPoint);
+ std::shared_ptr<GeomAPI_XY> aPassedPnt = theCenter->xy()->added( aMidDir->xy()->multiplied(aRadius) );
+ thePassedPoint->setValue(aPassedPnt->x(), aPassedPnt->y());
+}
+
+void SketchPlugin_Arc::updateDependentAttributes()
+{
+ std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
+ std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(START_ID()));
+ std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(END_ID()));
+ std::shared_ptr<GeomDataAPI_Point2D> aPassedPoint =
+ std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(PASSED_POINT_ID()));
+ AttributeDoublePtr aRadiusAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
+ data()->attribute(RADIUS_ID()));
+ AttributeDoublePtr anAngleAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
+ data()->attribute(ANGLE_ID()));
+
+ if (!aPassedPoint)
+ return;
+
+ data()->blockSendAttributeUpdated(true);
+
+ calculatePassedPoint(aCenterAttr->pnt(), aStartAttr->pnt(), anEndAttr->pnt(),
+ isReversed(), aPassedPoint);
+ if (aRadiusAttr && anAngleAttr) {
+ std::shared_ptr<GeomAPI_Circ2d> aCircle(
+ new GeomAPI_Circ2d(aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt()));
+ calculateArcAngleRadius(aCircle, aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt(),
+ anAngleAttr, aRadiusAttr);
+ }
+ data()->blockSendAttributeUpdated(false);
+}
+
+
+void SketchPlugin_Arc::attributeChanged(const std::string& theID)
+{
+ std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
+ std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(START_ID()));
+ std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
+ GeomDataAPI_Point2D>(data()->attribute(END_ID()));
+ // the second condition for unability to move external segments anywhere
+ if (theID == EXTERNAL_ID() || isFixed()) {
+ std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
+ // update arguments due to the selection value
+ if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
+ std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
+ std::shared_ptr<GeomAPI_Circ> aCirc = anEdge->circle();
+ if (aCirc.get()) {
+ aStartAttr->setValue(sketch()->to2D(anEdge->firstPoint()));
+ anEndAttr->setValue(sketch()->to2D(anEdge->lastPoint()));
+ aCenterAttr->setValue(sketch()->to2D(aCirc->center()));
+ }
+ }
+ return;
+ }
+
+ AttributeDoublePtr aRadiusAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
+ data()->attribute(RADIUS_ID()));
+ AttributeDoublePtr anAngleAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
+ data()->attribute(ANGLE_ID()));
+
+ if (theID == RADIUS_ID()) {
+ if (!aStartAttr->isInitialized() || !anEndAttr->isInitialized())
+ return;
+ // move center and passed point
+ std::shared_ptr<GeomAPI_Pnt2d> aStartPnt = aStartAttr->pnt();
+ std::shared_ptr<GeomAPI_Pnt2d> aEndPnt = anEndAttr->pnt();
+ double aDist = aStartPnt->distance(aEndPnt);
+ if (fabs(aDist) < tolerance)
+ return;
+ std::shared_ptr<GeomAPI_XY> aDir = aEndPnt->xy()->decreased(aStartPnt->xy());
+ std::shared_ptr<GeomAPI_Dir2d> aMidPerpDir(new GeomAPI_Dir2d(-aDir->y(), aDir->x()));
+ std::shared_ptr<GeomAPI_XY> aMidPnt = aStartPnt->xy()->added(aEndPnt->xy())->multiplied(0.5);
+
+ double anAngle = anAngleAttr->value() * PI / 180.0;
+ adjustPeriod(anAngle);
+ if (anAngle > PI)
+ aMidPerpDir->reverse();
+
+ double aRadius = aRadiusAttr->value();
+ aDist = sqrt(aRadius * aRadius - aDist * aDist / 4.0);
+
+ std::shared_ptr<GeomAPI_XY> aCenter = aMidPnt->added(aMidPerpDir->xy()->multiplied(aDist));
+
+ data()->blockSendAttributeUpdated(true);
+ aCenterAttr->setValue(aCenter->x(), aCenter->y());
+ updateDependentAttributes();
+ data()->blockSendAttributeUpdated(false);
+ return;
+ }
+ if (theID == ANGLE_ID()) {
+ if (!aStartAttr->isInitialized() || !aCenterAttr->isInitialized())
+ return;
+ 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());
+
+ anAngle /= 2.0;
+ sinA = sin(anAngle);
+ cosA = cos(anAngle);
+ aDir = std::shared_ptr<GeomAPI_XY>(new GeomAPI_XY(
+ aStartDir->x() * cosA - aStartDir->y() * sinA,
+ aStartDir->x() * sinA + aStartDir->y() * cosA));
+ std::shared_ptr<GeomDataAPI_Point2D> aPassedPoint =
+ std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(PASSED_POINT_ID()));
+ aPassedPoint->setValue(aCenter->x() + aDir->x(), aCenter->y() + aDir->y());
+
+ std::shared_ptr<GeomAPI_Circ2d> aCircle(
+ new GeomAPI_Circ2d(aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt()));
+ calculateArcAngleRadius(aCircle, aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt(),
+ anAngleAttr, aRadiusAttr);
+ data()->blockSendAttributeUpdated(false);
+ return;
+ }
+
+ if (theID == CENTER_ID()) {
+ if (!isFeatureValid())
+ return;
+ if (aCenterAttr->pnt()->distance(aStartAttr->pnt()) < tolerance)
+ return;
+ data()->blockSendAttributeUpdated(true);
+ // compute and change the arc end point
+ std::shared_ptr<GeomAPI_Circ2d> aCircleForArc(
+ new GeomAPI_Circ2d(aCenterAttr->pnt(), aStartAttr->pnt()));
+ std::shared_ptr<GeomAPI_Pnt2d> aProjection = aCircleForArc->project(anEndAttr->pnt());
+ if (aProjection && anEndAttr->pnt()->distance(aProjection) > tolerance)
+ anEndAttr->setValue(aProjection);
+ updateDependentAttributes();
+ data()->blockSendAttributeUpdated(false);
+ return;
+ }
+
+ AttributeStringPtr aTypeAttr =
+ std::dynamic_pointer_cast<ModelAPI_AttributeString>(attribute(ARC_TYPE()));
+ if (!aTypeAttr)
+ return;
+ std::string anArcType = aTypeAttr->value();
+
+ // update the points in accordance to the changed point changes
+ if (anArcType == ARC_TYPE_CENTER_START_END()) {
+ if (!isFeatureValid())
+ return;
+ updateDependentAttributes();
+ }
+ else if (anArcType == ARC_TYPE_THREE_POINTS() &&
+ (theID == START_ID() || theID == END_ID() || 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 == 1)
+ aCenterAttr->setValue(aPoints[0]->x(), aPoints[0]->y());
+ else if (aNbInitialized == 2) {
+ // calculate center point, which gives a quarter of circle for the given start and end points
+ std::shared_ptr<GeomAPI_Pnt2d> aStartPnt = aPoints[0];
+ std::shared_ptr<GeomAPI_Pnt2d> aEndPnt = aPoints[1];
+ std::shared_ptr<GeomAPI_XY> aDir = aEndPnt->xy()->decreased(aStartPnt->xy())->multiplied(0.5);
+ double x = aDir->x();
+ double y = aDir->y();
+ aDir->setX(x - y);
+ aDir->setY(y + x);
+ std::shared_ptr<GeomAPI_XY> aCenter = aStartPnt->xy()->added(aDir);
+ double aRadius = sqrt(aDir->dot(aDir));
+
+ aCenterAttr->setValue(aCenter->x(), aCenter->y());
+ aRadiusAttr->setValue(aRadius);
+ anAngleAttr->setValue(90.0);
+ }
+ 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) {
+ aCenterAttr->setValue(aCenter);
+ if (theID == START_ID() || theID == END_ID())
+ updateDependentAttributes();
+ else
+ calculateArcAngleRadius(aCircle, aPoints[0], aPoints[1], aPoints[2],
+ anAngleAttr, aRadiusAttr);
+ }
+ }
+
+ data()->blockSendAttributeUpdated(false);
+ }
+ else if (anArcType == ARC_TYPE_TANGENT() && (theID == TANGENT_POINT_ID() || theID == END_ID())) {
+ SketchPlugin_Sketch* aSketch = sketch();
+ AttributeRefAttrPtr aTangPtAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
+ data()->attribute(TANGENT_POINT_ID()));
+
+ if (aTangPtAttr->isInitialized() && anEndAttr->isInitialized()) {
+ data()->blockSendAttributeUpdated(true);
+ // compute orthogonal direction
+ std::shared_ptr<GeomAPI_Dir2d> anOrthoDir;
+ std::shared_ptr<GeomDataAPI_Point2D> aTangentPoint =
+ std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aTangPtAttr->attr());
+ std::shared_ptr<GeomAPI_Pnt2d> aTangPnt2d = aTangentPoint->pnt();
+ FeaturePtr aTangFeature = ModelAPI_Feature::feature(aTangentPoint->owner());
+ std::shared_ptr<GeomAPI_Edge> aTangEdge = std::dynamic_pointer_cast<GeomAPI_Edge>(
+ aTangFeature->lastResult()->shape());
+ if (aTangEdge->isLine()) {
+ std::shared_ptr<GeomAPI_Dir> aDir = aTangEdge->line()->direction();
+ std::shared_ptr<GeomAPI_Pnt> aPnt(new GeomAPI_Pnt(aDir->x(), aDir->y(), aDir->z()));
+ std::shared_ptr<GeomAPI_Pnt2d> aPnt2d = aSketch->to2D(aPnt);
+ anOrthoDir = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(-aPnt2d->y(), aPnt2d->x()));
+ }
+ else if (aTangEdge->isArc()) {
+ std::shared_ptr<GeomAPI_Pnt> aCenter = aTangEdge->circle()->center();
+ std::shared_ptr<GeomAPI_Pnt2d> aCenter2d = aSketch->to2D(aCenter);
+ anOrthoDir = std::shared_ptr<GeomAPI_Dir2d>(
+ new GeomAPI_Dir2d(aTangPnt2d->xy()->decreased(aCenter2d->xy())));
+ }
+
+ // compute parameters of the middle perpendicular
+ std::shared_ptr<GeomAPI_XY> aEndPntCoord = anEndAttr->pnt()->xy();
+ std::shared_ptr<GeomAPI_XY> aTempDir = aEndPntCoord->decreased(aTangPnt2d->xy());
+ std::shared_ptr<GeomAPI_Dir2d> aMidDir(new GeomAPI_Dir2d(-aTempDir->y(), aTempDir->x()));
+ std::shared_ptr<GeomAPI_Pnt2d> aMidPnt(
+ new GeomAPI_Pnt2d(aEndPntCoord->added(aTangPnt2d->xy())->multiplied(0.5)));
+
+ // compute center of arc by calculating intersection of orthogonal line and middle perpendicular
+ std::shared_ptr<GeomAPI_Lin2d> anOrthoLine(new GeomAPI_Lin2d(aTangPnt2d, anOrthoDir));
+ std::shared_ptr<GeomAPI_Lin2d> aMiddleLine(new GeomAPI_Lin2d(aMidPnt, aMidDir));
+ std::shared_ptr<GeomAPI_Pnt2d> aCenter = anOrthoLine->intersect(aMiddleLine);
+ if (aCenter) {
+ aCenterAttr->setValue(aCenter);
+ aStartAttr->setValue(aTangPnt2d);
+ updateDependentAttributes();
+ }