DefinitelyTyped/types/two.js/two.js-tests.ts

import Two = require("two.js");
{
    // Make an instance of two and place it on the page.
    const elem = document.getElementById("draw-shapes")!;
    const params = { width: 285, height: 200 };
    const two = new Two(params).appendTo(elem);

    // two has convenience methods to create shapes.
    const circle = two.makeCircle(72, 100, 50);
    const rect = two.makeRectangle(213, 100, 100, 100);

    // The object returned has many stylable properties:
    circle.fill = "#FF8000";
    circle.stroke = "orangered"; // Accepts all valid css color
    circle.linewidth = 5;

    rect.fill = "rgb(0, 200, 255)";
    rect.opacity = 0.75;
    rect.noStroke();

    // Don't forget to tell two to render everything
    // to the screen
    two.update();
}

{
    const elem = document.getElementById("draw-group")!;
    const two = new Two({ width: 285, height: 200 }).appendTo(elem);

    const circle = two.makeCircle(-70, 0, 50);
    const rect = two.makeRectangle(70, 0, 100, 100);
    circle.fill = "#FF8000";
    circle.stroke = "orangered";
    rect.fill = "rgba(0, 200, 255, 0.75)";
    rect.stroke = "#1C75BC";

    // Groups can take an array of shapes and/or groups.
    const group = two.makeGroup(circle, rect);

    // And have translation, rotation, scale like all shapes.
    group.translation.set(two.width / 2, two.height / 2);
    group.rotation = Math.PI;
    group.scale = 0.75;

    // You can also set the same properties a shape have.
    group.linewidth = 7;

    two.update();
}

{
    const elem = document.getElementById("draw-animation")!;
    const two = new Two({ width: 285, height: 200 }).appendTo(elem);

    const circle = two.makeCircle(-70, 0, 50);
    const rect = two.makeRectangle(70, 0, 100, 100);
    circle.fill = "#FF8000";
    rect.fill = "rgba(0, 200, 255, 0.75)";

    const group = two.makeGroup(circle, rect);
    group.translation.set(two.width / 2, two.height / 2);
    group.scale = 0;
    group.noStroke();

    // Bind a function to scale and rotate the group
    // to the animation loop.
    two.bind("update", frameCount => {
        // This code is called everytime two.update() is called.
        // Effectively 60 times per second.
        if (group.scale > 0.9999) {
            group.scale = group.rotation = 0;
        }
        const t = (1 - group.scale) * 0.125;
        group.scale += t;
        group.rotation += t * 4 * Math.PI;
    }).play(); // Finally, start the animation loop
}

{
    const two = new Two({ width: 300, height: 500 });
    const text = new Two.Text('text test', 10, 10);
    two.add(text);
}

{
    const v = new Two.Vector(0, 0);
    const dist = v.distanceToSquared(new Two.Vector(100, 200));
    v.x = dist;
}