CoolCatLib: Canvas

✨ About

Paint your world with style. CoolCatLib: Canvas brings screen effects, custom skies, slick GUI widgets and render tools: the cat's whiskers of visuals, built on CoolCatLib: Core.

• 🌈 Screen effects: layered full-screen shaders, with a screen for players to tune them
• 🌌 Custom skies: skyboxes drawn inside the vanilla sky, addable with no code
• 🪟 GUI widgets: panels, scrolling, dragging and animations for polished screens
• 🖌️ Render utilities: drawing helpers, anchors and easing curves

📦 Players: this is a library. Install it (with CoolCatLib: Core) when a mod asks for it. On its own it adds nothing to your game.

🌈 Screen effects

Full-screen shaders whose settings can change every frame.

• 9 ready-made effects: desaturate, chromatic aberration, vignette, wobble, film grain, tint, blur, afterimage and heartbeat
• Smooth fades, timed pulses, animated strength and conditions
• Stack as many as you like as layers, drawn over the world or over the whole screen
• Control a player's effects from the server
• Players get their own Effects screen: switch effects on and off, drag layers to reorder, and set each effect's strength

🌌 Custom skies

Replace or decorate the sky, drawn right inside the vanilla sky around the sun, moon and stars.

• Layer types: cubemap, panorama, sprite (planets!), gradient and your own shader
• Blend modes, tints, rotations, and day-night or weather-driven visibility
• Vanilla's sun, moon, stars and End sky fade out smoothly as your skybox fades in
• Add skies with no code: a resource pack JSON is enough
• Cheap: nothing runs while no skybox is showing

🪟 GUI widgets

Panels, scrolling and draggable widgets, slide animations and colorable buttons for polished screens.

🖌️ Render utilities

RenderUtils, nine-slice drawing, screen anchors and a full set of easing curves.

🧩 Requires

• CoolCatLib: Core