Ionrift Waterline

Animated water overlays and procedural border walls for Foundry VTT.

I spent literal days tracing water polygons on top of maps by hand. Every river, every lake, every puddle - click, click, click, adjusting vertices for hours. Across hundreds of maps this becomes genuinely soul-destroying prep work. Waterline exists to make that go away.

Click on water in your map and Waterline traces the shape automatically using flood-fill detection. It then renders the animated shader effect/background distortion.

You can tune everything with sliders: speed, intensity, opacity, distortion, scale, and flow direction. Built-in presets (River, Lake, Puddle, Coast, Deep Sea) 

Water FX

• Flood-fill detection - click on water and Waterline traces the body. (Flood fill based on pixel color).
• Voronoi caustics - animated light patterns rendered over the water with background distortion and edge fade.
• Presets - River, Lake, Puddle, Coast, Deep Sea. Save and load your own configurations per world.
• Additive editing - Shift+Click adds area, Ctrl+Click subtracts, Ctrl+Z undoes the last change.

Border Walls

Procedural wall generation along the canvas boundary with noise-based natural variation. Set vertex count, amplitude, jitter, and inset, then generate. Straight-wall mode also available.

Installation

1. Install via the Foundry VTT Module Browser or manifest URL.
2. Enable the module in your world.
3. Water tools appear in the Regions palette. Border tools appear in the Walls palette.

Requirements

• Ionrift Library - required dependency.

Links

• GitHub - source, issues, docs.
• Wiki / Guides

Part of the Ionrift Module Suite

Wiki / Guides · Discord · Patreon