diff options
Diffstat (limited to 'tools/genshape.js')
| -rw-r--r-- | tools/genshape.js | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/genshape.js b/tools/genshape.js new file mode 100644 index 0000000..c1b7ddf --- /dev/null +++ b/tools/genshape.js @@ -0,0 +1,30 @@ +var fs = require("fs") + +function polygon(radius, sides, angle) { + let w = radius * 2 + 6 + let b = 3 + radius + let out = [] + out.push(`<svg xmlns="http://www.w3.org/2000/svg" width="${w}" height="${w}">`) + let d = [ "M" ] + for (let i = 0; i < sides; ++i) { + let a = (angle + (360 / sides) * i) * (Math.PI / 180) + let x = b + Math.round(Math.sin(a) * radius) + let y = b + Math.round(Math.cos(a) * radius) + d.push(x) + d.push(y) + } + d.push("z") + out.push(`<path d="${d.join(" ")}" stroke-width="2" fill="white" stroke="none" />`) + out.push(`</svg>`) + return out.join("\n") +} + +// circle diameter: 54 => 27 +// square width: 54 => 27 +// hex diameter = 60 => 30 +// triangle base = 70, r = 70 / sqrt(3) => 40 + +fs.writeFileSync("ops.svg", polygon(30, 6, 30)) +//fs.writeFileSync("ptl.svg", polygon(27, 100, 0)) +//fs.writeFileSync("oc.svg", polygon(27, 4, 45)) +fs.writeFileSync("ug.svg", polygon(38, 3, 180)) |