Shapes

.package(url: "https://github.com/Desert-Ant-Labs/desert-ant-core.git", from: "3.5.0")

implementation("ai.desertant:shapes:3.5.0")

npm i @desert-ant-labs/shapes @litertjs/core   # browser
npm i @desert-ant-labs/shapes                  # Node, prebuilt native core

import Shapes

let shapes = Shapes()
if let shape = try await shapes.recognize(points: strokePoints) {
    switch shape {
    case let .rectangle(corners): ...       // [Point]
    case let .ellipse(center, semiMajor, semiMinor, rotation): ...
    default: break
    }
}

canvasView.enableShapeSnapping()

import ai.desertant.shapes.Point
import ai.desertant.shapes.Shape
import ai.desertant.shapes.Shapes

Shapes(context).use { shapes ->
    when (val shape = shapes.recognize(strokePoints)) {   // Shape? (null if rejected)
        is Shape.Rectangle -> shape.corners
        is Shape.Ellipse -> shape.center
        else -> {}
    }
}

import { Shapes } from "@desert-ant-labs/shapes";       // browser
// import { Shapes } from "@desert-ant-labs/shapes/native"; // server-side Node

const shapes = await Shapes.load();
const shape = await shapes.recognize(points);   // [{x, y}, ...] or [x0, y0, ...]
if (shape?.kind === "ellipse") shape.center;    // null when the stroke is rejected
shapes.dispose();