FW Paint v2.4.0

Marker line, and painting into open air.

Targets: Minecraft 26.3 · Fabric Loader 0.19.5+ · Fabric API for 26.3 (Fabric jar only) · Java 25.

New

• Marker line (wheel → Place → Shape markers): a free curve in 3D.

  • Click a start and an end on block faces (aim at the sky for a point 16 blocks out). Main nodes sit in the middle of block-grid cells, so straight lines are easy: new points, double-click-added nodes and released node drags all land on the grid.
  • Drag the nodes to move them. Pull the pink curve handles out of a node to bend the line; drag a handle back onto its node for a sharp corner. Right-drag a handle to slide it in or out at the same angle. Double-click a node to switch it between a sharp corner and a smooth curve.
  • A dragged point keeps its distance from you as you sweep the crosshair; walk around it to drag it another way. Scroll while dragging to push it further away or pull it nearer.
  • Two new rebindable modifiers. Axis lock (default Alt): while dragging a node, handle or the whole-line move node, lock it to the X, Y or Z axis it's mostly moving along; a coloured guide line shows the track. Link (default Ctrl): mirror the opposite curve handle (a smooth corner), make both tube ends the same size, or twist both ends together.
  • Editing happens in Marker line mode only; in other modes lines just show and keep constraining painting, so they can't be nudged by accident.
  • Double-click the line to add a node. Middle-click a middle node to remove it, anything else on the line to delete it.

• Tubes along a line. Floating buttons above both ends of the line sweep a circle, square, triangle or star along it, as a Shell (default) or Solid. The glowing blocks show exactly what will be painted, tight bends included. Each end gets a size node (different sizes make a taper, e.g. a tentacle) and a twist node; a node beside the line moves the whole thing. Each control cube carries a small icon (resize, rotate, move), and right-clicking a size or twist cube resets that end (hold Link to reset both). A bare line selects just the blocks it passes through. The ? button opens the Help page: a five-step TL;DR plus a one-line-per-control cheat sheet.

• Lines weave through the world but also show faintly through terrain (line, nodes, handles and the tube's edges), and their nodes and handles can be grabbed through blocks.

• 3D Fill inside a tube grows from the spot you aim at, a layer at a time, and stays inside the tube — Solid, Gradient or Noise. A second row of buttons picks which way a Gradient runs: Across (default — from the side you aim into, to the far side), Along (start → end), Inside out (line → skin) or Outside in (skin → line). Hover any button to see what it does.

• A tube's edges turn white only while you're looking at it.

• Place in air (Settings, on by default): blocks with nothing next to them are placed straight into the air, so fills and tubes in open sky need no scaffolding. Turn it off on servers whose anti-cheat flags that; blocks then wait for a neighbour as before. Aiming at open sky shows a green cell at the edge of your reach; clicking puts one block there instead of "aim at a block face". With 3D Fill the fill grows from that cell just like from a block: one block, a layer around it, and more while you hold — inside a shape, it stays inside.

• Shape walls act like block faces. Inside a ring, box or line tube, the shape's wall within reach counts as a block face: Single, Face (any / target / perpendicular) and 3D Fill select it and its connected faces exactly as they would real blocks, growing back into the shape — handy for painting the skin of a hollow tube from inside or out.

Changed

• A 3D Fill clicked on a block that touches an empty cell of a shape (or marker space) now counts as starting inside it, whichever face you hit. Filling a one-block gap at a jagged shape edge no longer spills outside the shape when the crosshair lands on a neighbour's outward face.

• Highlight edge lines everywhere (shapes, tubes, box, marker drag previews) are half as thick and slightly see-through.