+ // Create Preview
+ // selected linear face parameters
+ myShape = aSelAttr->value();
+ // this case is needed by constructing sketch on a plane, where result shape is equal
+ // to context result, therefore value() returns NULL and we should use shape of context.
+ if (!myShape.get() && aSelAttr->context().get())
+ myShape = aSelAttr->context()->shape();
+
+ if (!myShape.get()) {
+ // Create Preview for default planes
+ std::shared_ptr<GeomDataAPI_Point> anOrigin = std::dynamic_pointer_cast<GeomDataAPI_Point>(
+ theSketch->data()->attribute(SketchPlugin_Sketch::ORIGIN_ID()));
+ std::shared_ptr<GeomDataAPI_Dir> aNormal = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
+ theSketch->data()->attribute(SketchPlugin_Sketch::NORM_ID()));
+
+ double aFaceSize = myIsUseSizeOfView ? mySizeOfView
+ : Config_PropManager::real(SKETCH_TAB_NAME, "planes_size");
+ if (aFaceSize <= Precision::Confusion())
+ aFaceSize = 200; // Set default value
+
+ myShape = GeomAlgoAPI_FaceBuilder::squareFace(
+ myViewCentralPoint.get() ? myViewCentralPoint : anOrigin->pnt(), aNormal->dir(), aFaceSize);
+ }
+ else if (myIsUseSizeOfView && (mySizeOfView > 0)) {
+ std::shared_ptr<GeomAPI_Face> aFace(new GeomAPI_Face(myShape));
+ std::shared_ptr<GeomAPI_Pln> aPlane = aFace->getPlane();
+ if (aPlane.get()) {
+ double anA, aB, aC, aD;
+ aPlane->coefficients(anA, aB, aC, aD);
+ std::shared_ptr<GeomAPI_Dir> aNormDir(new GeomAPI_Dir(anA, aB, aC));
+ std::shared_ptr<GeomAPI_XYZ> aCoords = aNormDir->xyz();
+ std::shared_ptr<GeomAPI_XYZ> aZero(new GeomAPI_XYZ(0, 0, 0));
+ aCoords = aCoords->multiplied(-aD * aCoords->distance(aZero));
+ std::shared_ptr<GeomAPI_Pnt> anOrigPnt(new GeomAPI_Pnt(aCoords));