distance-field
Documentation
Generate distance field bitmaps for rendering as pseudo-vector images in shaders.
An example usecase for the library would be to automatically convert asset images. You can achieve this by having a build.rs
similar to this:
use File;
use DistanceFieldExt;
Generator binary
Checkout the repository and cd
into it; then run:
cargo run --example generator -- img/input.png output.png 64 64
This will take the following image as input:
And generate a 64x64 distance field:
Now we can use the generated distance field to create a vector image.
Using the distance field
First we need to scale it up with a linear interpolation:
Then we apply a treshold function:
You can see that we have something which looks very similar to the original input image and that just from a 64x64 image! But it's still very pixelated and doesn't look like a vector image. This can be fixed by not doing a hard treshold but allowing some shades of gray.