2D polygon

drawing tool this geometry shape is drawn using the pen tool it allows you to place nodes or points in the image while being connected by a line a task will include polygons (instance segmentation) or multi polygons (semantic segmentation) the drawing process is the same, but multi polygons allow you to draw separate polygons while sharing object id drawing process select a class place a point at the edge of the object, continue placing points along the object close the shape by connecting the first and last point if you are working with multi polygons you will be able to continue drawing polygons if the drawing tool is still active after closing a polygon, the selected class has the shape type "multi polygon" as you move the cursor over the image, a small tooltip follows, showing the classification name under the cursor and a border in that class's color lock/ unlock polygon lock use to avoid edits to existing objects or classifications (classified points) unlock use when you want to draw freely in the task you can lock/ unlock individual objects and classes or all simultaneously hide/ show polygon show use when you want to see the object or classification hide use when you want to hide the object or classification (classified points) you can hide/ show individual objects and classes or all simultaneously snap to point draw polygons very close to already existing polygons when the drawing tool is activated hold alt and clicking where you want to draw the next placed point will then be snapped to the nearest point on another polygon move polygon move entire polygon pressing shift layering in exported data when layering is activated in a task, each polygon is assigned an order from 0 and up the order is exported with the order key, which can be used to determine which polygon is closest to the front the lower the value, the closer it is