A GDScript implementation of a line renderer in Godot 4.0, useful for rendering cylindrical volume such as lasers, trails, etc. Based on the Godot 3.0 version by @dbp8890 at https://github.com/dbp8890/line-renderer, which is based on the helpful C# implementation by @paulohyy at https://github.com/paulohyy/linerenderer and added some additional features such as UV tiling and a .tscn file for ease of use.
- Simply download and unzip the folder, which contains a demo project. If the demo project is not needed, the
LineRenderersubfolder can be copied directly into the Godot project. - Drag and drop the
LineRenderer.tscnscene into the project, and you should see a line!
To edit the line's points, simply edit the points member variable of the line renderer, and add/remove points from the array (see demo project for details). This can also be done via the editor in Godot.
- Start thickness/end thickness: how thick to make the line, which will be interpolated between each segment.
- Corner smooth/cap smooth: how much smoothing to apply to the line's corners/caps. Generally, values around 5 work well. A value of 2 results in pointed corners/caps.
- Draw caps/corners: Enables/disables drawing caps or corners separately.
- Global coords: If enabled, the line's points are assumed to be global coordinates, which are independent of the line's transform or its parent. To have the line move/rotate with either itself or its parent, uncheck this so that the points are local.
- Scale texture: Checking this box tiles the texture, automatically repeating in the line's axial direction. Unchecking this box stretches the texture instead along the line's segments.
- Since this effectively uses camera-facing billboards, as with most billboards, certain angles can break the illusion of cylindrical volume.
- Corners and caps currently have suboptimal UV mapping, but textures formed in the shape of a line should generally work well.
- Texture scaling doesn't connect neatly to each segment at the moment; however, this is not very noticable in most cases.
To use the demo, click anywhere on the screen to add a line segment. The camera automatically orbits around a point; use the arrow keys to change direction.
MIT License (credit to @dbp8890 and @paulohyy for initial implementations)