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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-016.js ./demo/canvas-017.js ./demo/canvas-018.js ./demo/canvas-019.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/canvas-065.js ./demo/canvas-066.js ./demo/canvas-067.js ./demo/canvas-068.js ./demo/canvas-069.js ./demo/canvas-070.js ./demo/canvas-071.js ./demo/canvas-072.js ./demo/canvas-073.js ./demo/canvas-201.js ./demo/canvas-202.js ./demo/canvas-203.js ./demo/canvas-204.js ./demo/canvas-205.js ./demo/canvas-206.js ./demo/canvas-207.js ./demo/canvas-208.js ./demo/canvas-209.js ./demo/canvas-210.js ./demo/canvas-211.js ./demo/canvas-212.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/dom-017.js ./demo/dom-018.js ./demo/dom-019.js ./demo/dom-020.js ./demo/dom-021.js ./demo/filters-001.js ./demo/filters-002.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-028.js ./demo/filters-029.js ./demo/filters-030.js ./demo/filters-031.js ./demo/filters-032.js ./demo/filters-033.js ./demo/filters-034.js ./demo/filters-035.js ./demo/filters-036.js ./demo/filters-037.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/modules-006.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/particles-017.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-001.js ./demo/temp-shape-scale-investigation.js ./demo/tensorflow-001.js ./demo/tensorflow-002.js ./demo/utilities.js
  • §

    Demo Canvas 062

    Tetragon and Oval entity attributes and functionality

  • §

    Run code

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

    Scene setup

    const ovalCanvas = scrawl.findCanvas('oval-canvas');
    const ovalNamespace = ovalCanvas.name;
    const oName = (n) => `${ovalNamespace}-${n}`;
    
    ovalCanvas.setAsCurrentCanvas();
    
    const myOval = scrawl.makeOval({
        name: oName('my-oval'),
        start: ['center', 'center'],
        handle: ['center', 'center'],
    
        radius: 150,
    
        fillStyle: 'khaki',
        strokeStyle: 'teal',
        lineWidth: 4,
        lineJoin: 'round',
        method: 'fillThenDraw',
    });
    
    scrawl.makeWheel({
        name: oName('pin'),
        radius: 5,
        fillStyle: 'red',
        pivot: oName('my-oval'),
        lockTo: 'pivot',
        handle: ['center', 'center'],
    });
    
    const tetraCanvas = scrawl.findCanvas('tetragon-canvas');
    const tetraNamespace = tetraCanvas.name;
    const tName = (n) => `${tetraNamespace}-${n}`;
    
    tetraCanvas.setAsCurrentCanvas();
    
    scrawl.makeTetragon({
        name: tName('my-tetra'),
        start: ['center', 'center'],
        handle: ['center', 'center'],
    
        radius: 150,
    
        fillStyle: 'skyblue',
        strokeStyle: 'maroon',
        lineWidth: 4,
        lineJoin: 'round',
        method: 'fillThenDraw',
    });
    
    scrawl.makeWheel({
        name: tName('pin'),
        radius: 5,
        fillStyle: 'red',
        pivot: tName('my-tetra'),
        lockTo: 'pivot',
        handle: ['center', 'center'],
    });
    
    const shared = scrawl.makeGroup({
    
        name: 'shared',
    
    }).addArtefacts(myOval, tName('my-tetra'));
  • §

    Scene animation

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

    const report = reportSpeed('#reportmessage', function () {
    
        const {
            roll,
            scale,
            radiusX,
            radiusY,
            intersectX,
            intersectY,
            offshootA,
            offshootB,
            start,
            handle,
            offset,
        } = myOval;
    
        const {
            lineWidth,
            shadowOffsetX,
            shadowOffsetY,
            shadowBlur
    /** @ts-expect-error */
        } = myOval.state;
    
        return `    Radius - radiusX: ${radiusX}, radiusY: ${radiusY}, 
        Intersect - intersectX: ${intersectX}, intersectY: ${intersectY}, 
        Offshoot - offshootA: ${offshootA}, offshootB: ${offshootB}, 
        Start - [${start}]; Handle - [${handle}]; Offset - [${offset}]
        Roll: ${roll}; Scale: ${scale}; lineWidth: ${lineWidth}
        Shadow - offsetX: ${shadowOffsetX}; offsetY: ${shadowOffsetY}; blur: ${shadowBlur}; `;
    });
  • §

    Create the Display cycle animation

    scrawl.makeRender({
    
        name: oName('animation'),
        target: ovalCanvas,
        afterShow: report,
    });
    
    scrawl.makeRender({
    
        name: tName('animation'),
        target: tetraCanvas,
    });
  • §

    User interaction

    Setup form observer functionality

    scrawl.makeUpdater({
    
        event: ['input', 'change'],
        origin: '.controlItem',
    
        target: shared,
    
        useNativeListener: true,
        preventDefault: true,
    
        updates: {
            radiusX_absolute: ['radiusX', 'round'],
            radiusX_relative: ['radiusX', '%'],
            radiusY_absolute: ['radiusY', 'round'],
            radiusY_relative: ['radiusY', '%'],
            intersectX: ['intersectX', 'float'],
            intersectY: ['intersectY', 'float'],
            offshootA: ['offshootA', 'float'],
            offshootB: ['offshootB', 'float'],
    
            handle_xAbsolute: ['handleX', 'round'],
            handle_xPercent: ['handleX', '%'],
            handle_xString: ['handleX', 'raw'],
            handle_yAbsolute: ['handleY', 'round'],
            handle_yPercent: ['handleY', '%'],
            handle_yString: ['handleY', 'raw'],
            lineJoin: ['lineJoin', 'raw'],
            lineWidth: ['lineWidth', 'round'],
            method: ['method', 'raw'],
            offset_xAbsolute: ['offsetX', 'round'],
            offset_xPercent: ['offsetX', '%'],
            offset_yAbsolute: ['offsetY', 'round'],
            offset_yPercent: ['offsetY', '%'],
            reverse: ['flipReverse', 'boolean'],
            roll: ['roll', 'float'],
            scale: ['scale', 'float'],
            scaleOutline: ['scaleOutline', 'boolean'],
            scaleShadow: ['scaleShadow', 'boolean'],
            shadowBlur: ['shadowBlur', 'round'],
            shadowOffsetX: ['shadowOffsetX', 'round'],
            shadowOffsetY: ['shadowOffsetY', 'round'],
            showBoundingBox: ['showBoundingBox', 'boolean'],
            start_xAbsolute: ['startX', 'round'],
            start_xPercent: ['startX', '%'],
            start_xString: ['startX', 'raw'],
            start_yAbsolute: ['startY', 'round'],
            start_yPercent: ['startY', '%'],
            start_yString: ['startY', 'raw'],
            upend: ['flipUpend', 'boolean'],
            winding: ['winding', 'raw'],
        },
    });
  • §

    Setup form

    scrawl.initializeDomInputs([
        ['input', 'radiusX_absolute', '150'],
        ['input', 'radiusX_relative', '37.5'],
        ['input', 'radiusY_absolute', '150'],
        ['input', 'radiusY_relative', '37.5'],
        ['input', 'intersectX', '0.5'],
        ['input', 'intersectY', '0.5'],
        ['input', 'offshootA', '0.55'],
        ['input', 'offshootB', '0'],
    
        ['input', 'handle_xAbsolute', '150'],
        ['input', 'handle_xPercent', '50'],
        ['input', 'handle_yAbsolute', '100'],
        ['input', 'handle_yPercent', '50'],
        ['input', 'lineWidth', '2'],
        ['input', 'offset_xAbsolute', '0'],
        ['input', 'offset_xPercent', '0'],
        ['input', 'offset_yAbsolute', '0'],
        ['input', 'offset_yPercent', '0'],
        ['input', 'roll', '0'],
        ['input', 'scale', '1'],
        ['input', 'shadowBlur', '0'],
        ['input', 'shadowOffsetX', '0'],
        ['input', 'shadowOffsetY', '0'],
        ['input', 'start_xAbsolute', '300'],
        ['input', 'start_xPercent', '50'],
        ['input', 'start_yAbsolute', '200'],
        ['input', 'start_yPercent', '50'],
        ['select', 'handle_xString', 1],
        ['select', 'handle_yString', 1],
        ['select', 'lineJoin', 1],
        ['select', 'method', 4],
        ['select', 'reverse', 0],
        ['select', 'scaleOutline', 1],
        ['select', 'scaleShadow', 0],
        ['select', 'showBoundingBox', 0],
        ['select', 'start_xString', 1],
        ['select', 'start_yString', 1],
        ['select', 'upend', 0],
        ['select', 'winding', 0],
    ]);
  • §

    Development and testing

    console.log(scrawl.library);