36 lines
1.9 KiB
Markdown
36 lines
1.9 KiB
Markdown
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---
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title: 'Track mode with polygons'
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linkTitle: 'Track mode with polygons'
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weight: 5
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---
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Polygons in the track mode allow you to mark moving objects more accurately other than using a rectangle
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({{< ilink "/docs/manual/basics/track-mode-basics" "Tracking mode (basic)" >}};
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{{< ilink "/docs/manual/advanced/track-mode-advanced" "Tracking mode (advanced)" >}}).
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1. To create a polygon in the track mode, click the `Track` button.
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1. Create a polygon the same way as in the case of
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{{< ilink "/docs/manual/advanced/annotation-with-polygons" "Annotation with polygons" >}}.
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Press `N` or click the `Done` button on the top panel to complete the polygon.
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1. Pay attention to the fact that the created polygon has a starting point and a direction,
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these elements are important for annotation of the following frames.
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1. After going a few frames forward press `Shift+N`, the old polygon will disappear and you can create a new polygon.
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The new starting point should match the starting point of the previously created polygon
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(in this example, the top of the left mirror). The direction must also match (in this example, clockwise).
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After creating the polygon, press `N` and the intermediate frames will be interpolated automatically.
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1. If you need to change the starting point, right-click on the desired point and select `Set starting point`.
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To change the direction, right-click on the desired point and select switch orientation.
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There is no need to redraw the polygon every time using `Shift+N`,
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instead you can simply move the points or edit a part of the polygon by pressing `Shift+Click`.
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