odin-nanosvg

Odin bindings for nanosvg.

clone

git clone --recurse-submodules https://git.sr.ht/~jackmordaunt/odin-nanosvg

build

You can rely on the pre-built release binaries shipped with this repo, or you can build them yourself using the script build_libs.sh.

nanosvg contains only the parsing logic. nanosvgrast additionally contains a simple cpu rasterizer.

By default we link to nanosvgrast. If you don't need the rasterizer you can trim it out with -define:ENABLE_RASTERIZER=false.

For debug symbols call build_libs.sh debug.

NOTE: the build script uses zig for easy cross compilation.

usage

package main

import "core:c"
import "core:fmt"
import "core:math"

import "vendor:stb/image"

import nanosvg "../"

main :: proc() {
	// Parse the svg.
	img := nanosvg.ParseFromFile("sample.svg", "px", 96)
	defer nanosvg.Delete(img)

	r := nanosvg.CreateRasterizer()
	defer nanosvg.DeleteRasterizer(r)

	buf := make([]byte, int(math.ceil(img.width) * img.height) * 4)
	defer delete(buf)

	// Rasterize the svg.
	nanosvg.Rasterize(
		r,
		img,
		0,
		0,
		1,
		raw_data(buf),
		c.int(img.width),
		c.int(img.height),
		c.int(math.ceil(img.width) * 4),
	)

	// Write rasterized png to disk.
	image.write_png(
		"out.png",
		c.int(img.width),
		c.int(img.height),
		4,
		raw_data(buf),
		c.int(math.ceil(img.width) * 4),
	)
}