GP Shaper - Blender addon

GP shaper convert single strokes to a shape in draw mode simply by hovering over and pressing a shortcut.

Compatibility: Blender 4.3 to latest.


Demo Video:

List of available target shapes to convert to:

- Ellipse / Circle

- Arcs (partial ellipse, not parabolic)

- Rectangle / Square

- Polyline

- Line

2 Sets of shortcuts:

- C : Convert to target shape

- Alt + C : Pie menu to select the target shape

- V : Convert to target shape, snapping to a 15° angle

- Alt + V : Pie menu to select the target shape, snapping to a 15° angle

Result of Alt + C

Extra shortcut:
To get a square from a Rectangle or a Circle from an ellipse, Press quickly C/V twice over the same stroke to equalize its axis.

In the Redo panel (bottom right corner of the screen or popup using F9 key), you will be able to tweak the resulting shape (see demo video above and gifs below)

Demo gifs

Ellipse / Circle

Arc (partial ellipse):

Rectangle:

Polyline:

Line:

In the popover panel (upper right corner of the 3D viewport in Draw mode), you'll find:

- options to change the behavior of the single "to Shape" shortcut (C/V), default to auto-detect

- a summary of the available shortcuts.

- a button to open preferences to customize the keymap.

Troubleshooting

For the stroke to be correctly detected when hovering with mouse, the Grease pencil stroke has to lie on the drawing plane defined by the current GP settings (should be on the canvas when checked in Grease pencil overlays).

Shortcut does not pick the closest stroke:
- The stroke might not be placed on the canvas, enable the display to ensure it's on it.
- There might be very few points on the line (it detects the points, not the edges)
- Maybe it cannot resolve the shape, open the redo panel (F9) after shortcut to see if there is a warning.

Shortcut always turn the strokes into the same shape:
- You may be in "force shape" mode, check in the upper right corner of the viewport if the auto-detect mode (magic wand icon) is enabled.