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    ./demo/canvas-001.js ./demo/canvas-002.js ./demo/canvas-003.js ./demo/canvas-004.js ./demo/canvas-005.js ./demo/canvas-006.js ./demo/canvas-007.js ./demo/canvas-008.js ./demo/canvas-009.js ./demo/canvas-010.js ./demo/canvas-011.js ./demo/canvas-012.js ./demo/canvas-013.js ./demo/canvas-014.js ./demo/canvas-015.js ./demo/canvas-015a.js ./demo/canvas-016.js ./demo/canvas-017.js ./demo/canvas-018.js ./demo/canvas-019.js ./demo/canvas-019a.js ./demo/canvas-020.js ./demo/canvas-021.js ./demo/canvas-022.js ./demo/canvas-023.js ./demo/canvas-024.js ./demo/canvas-025.js ./demo/canvas-026.js ./demo/canvas-027.js ./demo/canvas-028.js ./demo/canvas-029.js ./demo/canvas-030.js ./demo/canvas-031.js ./demo/canvas-032.js ./demo/canvas-033.js ./demo/canvas-034.js ./demo/canvas-035.js ./demo/canvas-036.js ./demo/canvas-037.js ./demo/canvas-038.js ./demo/canvas-039.js ./demo/canvas-040.js ./demo/canvas-041.js ./demo/canvas-042.js ./demo/canvas-043.js ./demo/canvas-044.js ./demo/canvas-045.js ./demo/canvas-046.js ./demo/canvas-047.js ./demo/canvas-048.js ./demo/canvas-049.js ./demo/canvas-050.js ./demo/canvas-051.js ./demo/canvas-052.js ./demo/canvas-053.js ./demo/canvas-054.js ./demo/canvas-055.js ./demo/canvas-056.js ./demo/canvas-057.js ./demo/canvas-058.js ./demo/canvas-059.js ./demo/canvas-060.js ./demo/canvas-061.js ./demo/canvas-062.js ./demo/canvas-063.js ./demo/canvas-064.js ./demo/core-001.js ./demo/delaunator-001.js ./demo/delaunator-002.js ./demo/dom-001.js ./demo/dom-002.js ./demo/dom-003.js ./demo/dom-004.js ./demo/dom-005.js ./demo/dom-006.js ./demo/dom-007.js ./demo/dom-008.js ./demo/dom-009.js ./demo/dom-010.js ./demo/dom-011.js ./demo/dom-012.js ./demo/dom-013.js ./demo/dom-015.js ./demo/dom-016.js ./demo/filters-001.js ./demo/filters-002.js ./demo/filters-002a.js ./demo/filters-003.js ./demo/filters-004.js ./demo/filters-005.js ./demo/filters-006.js ./demo/filters-007.js ./demo/filters-008.js ./demo/filters-009.js ./demo/filters-010.js ./demo/filters-011.js ./demo/filters-012.js ./demo/filters-013.js ./demo/filters-014.js ./demo/filters-015.js ./demo/filters-016.js ./demo/filters-017.js ./demo/filters-018.js ./demo/filters-019.js ./demo/filters-020.js ./demo/filters-021.js ./demo/filters-022.js ./demo/filters-023.js ./demo/filters-024.js ./demo/filters-025.js ./demo/filters-026.js ./demo/filters-027.js ./demo/filters-101.js ./demo/filters-102.js ./demo/filters-103.js ./demo/filters-104.js ./demo/filters-105.js ./demo/filters-501.js ./demo/filters-502.js ./demo/filters-503.js ./demo/filters-504.js ./demo/filters-505.js ./demo/mediapipe-001.js ./demo/mediapipe-002.js ./demo/mediapipe-003.js ./demo/modules-001.js ./demo/modules-002.js ./demo/modules-003.js ./demo/modules-004.js ./demo/modules-005.js ./demo/packets-001.js ./demo/packets-002.js ./demo/particles-001.js ./demo/particles-002.js ./demo/particles-003.js ./demo/particles-004.js ./demo/particles-005.js ./demo/particles-006.js ./demo/particles-007.js ./demo/particles-008.js ./demo/particles-009.js ./demo/particles-010.js ./demo/particles-011.js ./demo/particles-012.js ./demo/particles-013.js ./demo/particles-014.js ./demo/particles-015.js ./demo/particles-016.js ./demo/rapier-001.js ./demo/snippets-001.js ./demo/snippets-002.js ./demo/snippets-003.js ./demo/snippets-004.js ./demo/snippets-005.js ./demo/snippets-006.js ./demo/temp-000.js ./demo/temp-001.js ./demo/temp-001a.js ./demo/temp-002.js ./demo/temp-003.js ./demo/temp-004.js ./demo/temp-005.js ./demo/temp-006.js ./demo/temp-007.js ./demo/temp-008.js ./demo/temp-009.js ./demo/temp-010.js ./demo/temp-011.js ./demo/temp-012.js ./demo/temp-013.js ./demo/temp-014.js ./demo/temp-015.js ./demo/temp-016.js ./demo/temp-017.js ./demo/temp-018.js ./demo/temp-018a.js ./demo/temp-019.js ./demo/temp-020.js ./demo/temp-021.js ./demo/temp-022.js ./demo/temp-023.js ./demo/temp-024.js ./demo/temp-025.js ./demo/temp-026.js ./demo/temp-027.js ./demo/temp-028.js ./demo/temp-029.js ./demo/temp-030.js ./demo/temp-031.js ./demo/temp-032.js ./demo/temp-033.js ./demo/temp-034.js ./demo/temp-035.js ./demo/temp-036.js ./demo/temp-037.js ./demo/temp-100.js ./demo/temp-101.js ./demo/temp-102.js ./demo/temp-103.js ./demo/temp-104.js ./demo/temp-200.js ./demo/temp-201.js ./demo/temp-301.js ./demo/temp-inkscapeSvgFilters.js ./demo/temp-lottie.js ./demo/tensorflow-001.js ./demo/tensorflow-002.js ./demo/utilities.js
  • §

    Demo Canvas 055

    Crescent entity functionality

  • §

    Run code

    import * as scrawl from '../source/scrawl.js';
    
    import { reportSpeed } from './utilities.js';
  • §

    Scene setup

    let canvas = scrawl.library.artefact.mycanvas;
    
    
    const myMoon = scrawl.makeCrescent({
        name: 'my-crescent',
        start: ['center', 'center'],
        handle: ['center', 'center'],
        outerRadius: 150,
        innerRadius: 100,
        displacement: 40,
    
        fillStyle: 'orange',
        strokeStyle: 'darkslategray',
        lineWidth: 4,
        lineJoin: 'round',
        method: 'fillThenDraw',
    });
    
    scrawl.makeWheel({
        name: 'pin',
        radius: 5,
        fillStyle: 'red',
        pivot: 'my-crescent',
        lockTo: 'pivot',
        handle: ['center', 'center'],
    });
  • §

    Scene animation

    Function to display frames-per-second data, and other information relevant to the demo

    const report = reportSpeed('#reportmessage', function () {
    
        let [startX, startY] = myMoon.start;
        let [handleX, handleY] = myMoon.handle;
    
        let {roll, scale, outerRadius, innerRadius, displacement} = myMoon;
    
        return `    Start - x: ${startX}, y: ${startY}
        Handle - x: ${handleX}, y: ${handleY}
        Radius - outer: ${outerRadius}, inner: ${innerRadius}, displacement: ${displacement}
        Roll: ${roll}; Scale: ${scale}`;
    });
  • §

    Create the Display cycle animation

    scrawl.makeRender({
    
        name: 'demo-animation',
        target: canvas,
        afterShow: report,
    });
  • §

    User interaction

    Setup form observer functionality

    scrawl.observeAndUpdate({
    
        event: ['input', 'change'],
        origin: '.controlItem',
    
        target: myMoon,
    
        useNativeListener: true,
        preventDefault: true,
    
        updates: {
    
            start_xPercent: ['startX', '%'],
            start_xAbsolute: ['startX', 'round'],
            start_xString: ['startX', 'raw'],
    
            start_yPercent: ['startY', '%'],
            start_yAbsolute: ['startY', 'round'],
            start_yString: ['startY', 'raw'],
    
            handle_xPercent: ['handleX', '%'],
            handle_xAbsolute: ['handleX', 'round'],
            handle_xString: ['handleX', 'raw'],
    
            handle_yPercent: ['handleY', '%'],
            handle_yAbsolute: ['handleY', 'round'],
            handle_yString: ['handleY', 'raw'],
    
            roll: ['roll', 'float'],
            scale: ['scale', 'float'],
    
            upend: ['flipUpend', 'boolean'],
            reverse: ['flipReverse', 'boolean'],
    
            outerRadius: ['outerRadius', 'round'],
            innerRadius: ['innerRadius', 'round'],
            displacement: ['displacement', 'round'],
            displayIntersect: ['displayIntersect', 'boolean'],
        },
    });
  • §

    Setup form @ts-expect-error

    document.querySelector('#start_xPercent').value = 50;
  • §

    @ts-expect-error

    document.querySelector('#start_yPercent').value = 50;
  • §

    @ts-expect-error

    document.querySelector('#handle_xPercent').value = 50;
  • §

    @ts-expect-error

    document.querySelector('#handle_yPercent').value = 50;
  • §

    @ts-expect-error

    document.querySelector('#start_xAbsolute').value = 300;
  • §

    @ts-expect-error

    document.querySelector('#start_yAbsolute').value = 200;
  • §

    @ts-expect-error

    document.querySelector('#handle_xAbsolute').value = 100;
  • §

    @ts-expect-error

    document.querySelector('#handle_yAbsolute').value = 100;
  • §

    @ts-expect-error

    document.querySelector('#start_xString').options.selectedIndex = 1;
  • §

    @ts-expect-error

    document.querySelector('#start_yString').options.selectedIndex = 1;
  • §

    @ts-expect-error

    document.querySelector('#handle_xString').options.selectedIndex = 1;
  • §

    @ts-expect-error

    document.querySelector('#handle_yString').options.selectedIndex = 1;
  • §

    @ts-expect-error

    document.querySelector('#roll').value = 0;
  • §

    @ts-expect-error

    document.querySelector('#scale').value = 1;
  • §

    @ts-expect-error

    document.querySelector('#upend').options.selectedIndex = 0;
  • §

    @ts-expect-error

    document.querySelector('#reverse').options.selectedIndex = 0;
  • §

    @ts-expect-error

    document.querySelector('#outerRadius').value = 150;
  • §

    @ts-expect-error

    document.querySelector('#innerRadius').value = 100;
  • §

    @ts-expect-error

    document.querySelector('#displacement').value = 40;
  • §

    @ts-expect-error

    document.querySelector('#displayIntersect').options.selectedIndex = 0;
  • §

    Development and testing

    console.log(scrawl.library);