- Draw a pose. Press K (or + Keyframe) and draw the next pose.
- Choose how many inbetween frames go in each gap, and an easing.
- Press Generate Inbetweens. Playback fills in automatically.
Tools
- Brush (B) — freehand, pressure-aware on pen tablets.
- Line / Rect / Ellipse (L R O) — drag to draw;
hold Shift to snap angles or constrain to square/circle. Shapes are normal
strokes, so they morph like anything else.
- Fill (P) — click inside a region to flood-fill it with the ink
colour. Fills sit under your strokes, morph between keyframes, and stack (pour one
colour, then another).
- Brush tips — round brush, hard pencil, translucent
marker, soft airbrush. The tip applies to new strokes of any drawing
tool and interpolates like everything else.
- Move (V) — drag strokes on the current frame to reposition them.
- Eraser (E) — removes whole strokes it touches.
- Eyedropper (I) — click to sample a colour, drops you back to the brush.
- Colour picker — the ink swatch opens an in-page picker (saturation/value
square, hue strip, hex field). Every colour is one click away; no OS dialog.
View
- Mouse wheel zooms at the cursor; hold H and drag (or middle-drag) to pan.
- Flip (F) mirrors the view like an animation light-table disc — your
strokes stay under the cursor and are saved unflipped.
- 0 fits the stage, 1 is actual size.
Keyframes vs generated
Amber tabs are your keyframes. Dusty-blue tabs are generated inbetweens. If you draw on a
generated frame it becomes fixed (solid blue) — Generate keeps your fix and rebuilds
only the frames around it.
Awkward cases
- Stroke counts differ between keys: strokes are matched by position, length,
direction and colour. Matched strokes morph; extras fade in or out.
- Empty frame: the other key's strokes fade in/out across the gap.
- One keyframe only: nothing to interpolate — Generate just tells you to add another.
- Imported images: raster keys cross-fade (vector keys drawn over them morph as usual).