Graphics for Roc 💜

A simple platform for creating 2D images using Roc.

It generates a .png image file in the directory where you run roc run from.

My goal with this platform is to learn Roc platform dev, and to have a baseline platfrom that demonstrates everything required end-to-end including cross-platform packaging.

Any PR's or ideas are welcome. Possible future directions include:

• Add support for other graphics formats (svg etc)
• Add support for other image formats (write to bmp, jpg etc)

Example - Build and run locally

If you are running the example locally it will require that you have a prebuilt-platform library located next to the platform main.roc.

If you have zig version 0.11.0 installed you can build the prebuilt-platform using bash bundle.sh. This will cross-compile the platform for all supported platforms and also bundle these into a package for distribution.

Then you can run the example using roc run --prebuilt-platform examples/rocLovesGraphics.roc.

How to use

The platform main expects a record Options which contains basic information for generating an image. The image content is a Str and is expecting a TinyVG in text format. See roc-tinvyvg package for how to generate this using Roc.

Options : {
    size ? [Inherit, Set {width : U32, height : U32}],
    title ? Str,
    antiAlias ? [X1, X4, X9, X16, X25],
    content : Str,
}

# E.g.
main = { title: "bird", content: tvgText }