IllusionDocs
Open Illusion

Brushes & textures

The Brush (B) paints strokes whose width — and for textured brushes, darkness — follows your pen pressure. Every stroke stays a vector: move it, recolor it, erase part of it or scale it without losing quality.

Sketch and Charcoal strokes

Presets

Preset Character
Ink Crisp inking line that tapers at both ends.
Pencil Soft pencil line.
Sketch Graphite on paper: fine grain, slightly ragged edge, darker the harder you press.
Charcoal Dense dry media: several bristles leave streaks along the stroke, with a scratchy edge.
Marker Even, slightly see-through marker.
Highlight Wide translucent highlighter.
Wire Uniform technical line.

Choose a preset in the Brush section of Properties (Studio Mode), the toolbar dropdown, or the chips in Simple Mode's brush options. To restyle a stroke you already drew, select it and pick a preset in the Brush section of Properties.

Size, smoothing and pressure

  • Size — maximum stroke width. [ and ] change it while drawing.
  • Smoothing and Streamline — how much the stroke is steadied. Higher values give calmer curves; lower values keep every movement.
  • Pressure Sensitivity — from uniform width to strong taper.
  • Pressure curve — how hard you need to press to reach full width.

With a mouse there is no pressure; strokes use a simulated taper instead.

Textures (Sketch and Charcoal)

Textured brushes have a Texture panel — in Studio Mode under Brush & Sketch, in Simple Mode behind the Texture button next to the brush chips.

Setting Effect
Texture size Grain from fine (25%) to coarse (400%).
Amount From a solid stroke to full grain.
Density From light dust to heavy powder.
Stretch Round powder specks ↔ long horizontal flecks.
Patches Even grain ↔ blotchy light and dark areas.
Edge roughness Clean edge ↔ ragged edge.
Streaks (Charcoal) Solid ↔ dry streaks along the stroke.
Pressure → darkness How much pen pressure changes darkness (new strokes).

Quick looks: Default, Powder, Flecks and Fine.

Tip: With a textured stroke selected, the texture panel edits that stroke — and the brush remembers the change for your next strokes.

Every brush remembers its settings

Each preset keeps its own size, smoothing, pressure and texture. Switch from Sketch to Charcoal and back, and both are exactly as you left them. Settings are kept when you close the app.

Performance

Strokes with the same texture share one texture layer, so even sketches with hundreds of strokes pan smoothly. While you pinch-zoom on a tablet, textures show a flat tone for speed and come back when your fingers lift.

Close a stroke

Finish a stroke near where it started to close it into a filled loop.