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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-074.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/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-038.js ./demo/filters-039.js ./demo/filters-040.js ./demo/filters-041.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 013

    Path-defined entitys: Oval, Rectangle, Line, Quadratic, Bezier, Tetragon, Polygon, Star, Spiral, Cog

  • §

    Run code

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

    Scene setup

    Get a handle to the Canvas wrapper

    const canvas = scrawl.findCanvas('mycanvas');
  • §

    Namespacing boilerplate

    const namespace = canvas.name;
    const name = (n) => `${namespace}-${n}`;
  • §
    makeOval factory function
    scrawl.makeOval({
        name: name('circle'),
        fillStyle: 'lightGreen',
        method: 'fillAndDraw',
        startX: 20,
        startY: 20,
        radius: 40,
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('ellipse'),
        startX: 120,
        radiusY: 60,
    
    }).clone({
        name: name('egg'),
        startX: 220,
        radiusX: '7%',
        radiusY: '3%',
        intersectY: 0.6,
    
    }).clone({
        name: name('shield'),
        startX: 335,
        radiusY: '2.7%',
        intersectY: -0.2,
    
    }).clone({
        name: name('splodge'),
        startX: 460,
        radius: 50,
        offshootA: 1.2,
        offshootB: -0.5,
        intersectY: 0.32,
    });
  • §
    makeRectangle factory function
    scrawl.makeRectangle({
        name: name('ovalRectangle'),
        startX: 20,
        startY: 200,
        rectangleWidth: 120,
        rectangleHeight: 80,
        radius: '50%',
        fillStyle: 'lightblue',
        method: 'fillAndDraw',
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('tab'),
        startX: 165,
        rectangleHeight: 40,
        radiusT: 20,
        radiusB: 0,
    
    }).clone({
        name: name('blockRectangle'),
        startX: 310,
        rectangleHeight: 60,
        radius: 0,
    
    }).clone({
        name: name('notRectangle'),
        startX: 460,
        radiusX: '15%',
        radiusY: '25%',
        offshootA: -0.2,
        offshootB: 0.2,
    });
  • §
    makeLine factory function
    scrawl.makeLine({
        name: name('firstLine'),
        startX: 20,
        startY: 320,
        endX: 580,
        endY: 295,
        lineWidth: 3,
        lineCap: 'round',
        strokeStyle: 'darkgoldenrod',
        method: 'draw',
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('secondLine'),
        startY: '16.5%',
        endY: '13.7%',
    
    }).clone({
        name: name('thirdLine'),
        startX: '20%',
        startY: '14%',
        endX: '85%',
        endY: '14%',
    });
  • §
    makeQuadratic factory function
    scrawl.makeQuadratic({
        name: name('firstQuad'),
        startX: '5%',
        startY: '20%',
        controlX: '50%',
        controlY: '15%',
        endX: '95%',
        endY: '20%',
        lineWidth: 3,
        lineCap: 'round',
        strokeStyle: 'darkseagreen',
        method: 'draw',
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('secondQuad'),
        startX: '12%',
        endX: '88%',
        startY: '21.5%',
        endY: '21.5%',
    
    }).clone({
        name: name('thirdQuad'),
        startX: '19%',
        endX: '81%',
        startY: '23%',
        endY: '23%',
    });
  • §
    makeBezier factory function
    scrawl.makeBezier({
        name: name('firstBezier'),
        startX: '5%',
        startY: '27%',
        startControlX: '40%',
        startControlY: '22%',
        endControlX: '60%',
        endControlY: '32%',
        endX: '95%',
        endY: '27%',
        lineWidth: 3,
        lineCap: 'round',
        strokeStyle: 'linen',
        method: 'draw',
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('secondBezier'),
        startX: '7%',
        startControlY: '18%',
        endControlY: '36%',
        endX: '93%',
    
    }).clone({
        name: name('thirdBezier'),
        startX: '9%',
        startControlY: '14%',
        endControlY: '40%',
        endX: '91%',
    });
  • §
    makeTetragon factory function
    scrawl.makeTetragon({
        name: name('square'),
        fillStyle: 'lightGreen',
        method: 'fillAndDraw',
        startX: 20,
        startY: 750,
        radius: 40,
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('diamond'),
        startX: 120,
        radiusY: 60,
    
    }).clone({
        name: name('triangle'),
        startX: 220,
        radiusX: '7%',
        radiusY: '3%',
        intersectY: 1,
    
    }).clone({
        name: name('arrow'),
        startX: 330,
        radiusY: '2.6%',
        intersectY: 1.2,
    
    }).clone({
        name: name('skewarrow'),
        startX: 470,
        radius: 50,
        intersectX: 0.32,
    });
  • §
    makePolygon factory function
    scrawl.makePolygon({
        name: name('equiTriangle'),
        startX: 20,
        startY: 935,
        sideLength: 60,
        sides: 3,
        fillStyle: 'lightblue',
        method: 'fillAndDraw',
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('pentagon'),
        startX: 120,
        sides: 5,
    
    }).clone({
        name: name('hexagon'),
        startX: 260,
        sides: 6,
    
    }).clone({
        name: name('11sides'),
        startX: 420,
        sideLength: 30,
        sides: 11,
    });
  • §
    makeStar factory function
    scrawl.makeStar({
        name: name('5star'),
        startX: 20,
        startY: 1080,
        radius1: 80,
        radius2: 50,
        points: 5,
        fillStyle: 'linen',
        method: 'fillAndDraw',
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('6star'),
        startX: 220,
        points: 6,
    
    }).clone({
        name: name('twistedstar'),
        startX: 420,
        radius2: 20,
        twist: 115,
    });
  • §
    makeSpiral factory function
    scrawl.makeSpiral({
        name: name('spiral1'),
        strokeStyle: 'darkgreen',
        method: 'draw',
        startX: 50,
        startY: 1310,
        loops: 5,
        loopIncrement: 0.1,
        drawFromLoop: 0,
        scale: 70,
        scaleOutline: false,
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('spiral2'),
        startX: 350,
        drawFromLoop: 3,
    
    }).clone({
        name: name('spiral3'),
        startY: 1550,
        loopIncrement: 0.3,
        drawFromLoop: 0,
    
    }).clone({
        name: name('spiral4'),
        startX: 50,
        loopIncrement: 0.3,
        drawFromLoop: 3,
    });
  • §
    makeCog factory function
    scrawl.makeCog({
        name: name('tooth-cog'),
        startX: 20,
        startY: 1790,
        outerRadius: 80,
        innerRadius: 65,
        outerControlsDistance: 4,
        innerControlsDistance: 2,
        points: 20,
        fillStyle: 'orchid',
        lineWidth: 2,
        method: 'fillAndDraw',
        curve: 'line',
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('blade-tooth-cog'),
        outerControlsOffset: 5,
        startX: 220,
    
    }).clone({
        name: name('twist-tooth-cog'),
        startX: 420,
        outerControlsOffset: 0,
        twist: 15,
    });
    
    scrawl.makeCog({
        name: name('hill-cog'),
        startX: 20,
        startY: 1980,
        outerRadius: 80,
        innerRadius: 65,
        outerControlsDistance: 4,
        innerControlsDistance: 2,
        points: 20,
        fillStyle: 'slategrey',
        lineWidth: 2,
        method: 'fillAndDraw',
        curve: 'quadratic',
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('blade-hill-cog'),
        outerControlsOffset: 5,
        startX: 220,
    
    }).clone({
        name: name('twist-hill-cog'),
        startX: 420,
        outerControlsOffset: 0,
        twist: 15,
    });
    
    scrawl.makeCog({
        name: name('smooth-cog'),
        startX: 20,
        startY: 2170,
        outerRadius: 80,
        innerRadius: 60,
        outerControlsDistance: 10,
        innerControlsDistance: 6,
        points: 12,
        fillStyle: 'coral',
        lineWidth: 2,
        method: 'fillAndDraw',
    
        showBoundingBox: true,
        useAsPath: true,
    
    }).clone({
        name: name('blade-smooth-cog'),
        outerControlsOffset: 15,
        startX: 220,
    
    }).clone({
        name: name('twist-smooth-cog'),
        startX: 420,
        outerControlsOffset: 0,
        twist: 15,
    });
  • §

    Development and testing

    Create entitys to use the above Shape entitys as paths along which they can be animated

    scrawl.makePicture({
    
        name: name('tab-bear'),
        imageSource: 'img/bunny.png',
    
        width: 26,
        height: 37,
    
        copyWidth: 26,
        copyHeight: 37,
    
        handleX: 'center',
        handleY: 'center',
    
        path: name('tab'),
        pathPosition: 0,
        lockTo: 'path',
        addPathRotation: true,
    
        delta: {
            pathPosition: 0.0015,
        },
    
    }).clone({
        name: name('blockRectangle-bear'),
        path: name('blockRectangle'),
        pathPosition: 0.05,
    
    }).clone({
        name: name('circle-bear'),
        path: name('circle'),
        pathPosition: 0.1,
    
    }).clone({
        name: name('egg-bear'),
        path: name('egg'),
        pathPosition: 0.15,
    
    }).clone({
        name: name('ellipse-bear'),
        path: name('ellipse'),
        pathPosition: 0.2,
    
    }).clone({
        name: name('firstBezier-bear'),
        path: name('firstBezier'),
        pathPosition: 0.25,
    
    }).clone({
        name: name('firstLine-bear'),
        path: name('firstLine'),
        pathPosition: 0.3,
    
    }).clone({
        name: name('firstQuad-bear'),
        path: name('firstQuad'),
        pathPosition: 0.35,
    
    }).clone({
        name: name('notRectangle-bear'),
        path: name('notRectangle'),
        pathPosition: 0.4,
    
    }).clone({
        name: name('ovalRectangle-bear'),
        path: name('ovalRectangle'),
        pathPosition: 0.45,
    
    }).clone({
        name: name('secondBezier-bear'),
        path: name('secondBezier'),
        pathPosition: 0.5,
    
    }).clone({
        name: name('secondLine-bear'),
        path: name('secondLine'),
        pathPosition: 0.55,
    
    }).clone({
        name: name('secondQuad-bear'),
        path: name('secondQuad'),
        pathPosition: 0.6,
    
    }).clone({
        name: name('shield-bear'),
        path: name('shield'),
        pathPosition: 0.65,
    
    }).clone({
        name: name('splodge-bear'),
        path: name('splodge'),
        pathPosition: 0.7,
    
    }).clone({
        name: name('thirdBezier-bear'),
        path: name('thirdBezier'),
        pathPosition: 0.75,
    
    }).clone({
        name: name('thirdQuad-bear'),
        path: name('thirdQuad'),
        pathPosition: 0.8,
    
    }).clone({
        name: name('thirdLine-bear'),
        path: name('thirdLine'),
        pathPosition: 0.85,
    
    }).clone({
        name: name('square-bear'),
        path: name('square'),
        pathPosition: 0,
    
    }).clone({
        name: name('diamond-bear'),
        path: name('diamond'),
        pathPosition: 0.05,
    
    }).clone({
        name: name('triangle-bear'),
        path: name('triangle'),
        pathPosition: 0.1,
    
    }).clone({
        name: name('arrow-bear'),
        path: name('arrow'),
        pathPosition: 0.15,
    
    }).clone({
        name: name('skewarrow-bear'),
        path: name('skewarrow'),
        pathPosition: 0.2,
    
    }).clone({
        name: name('equiTriangle-bear'),
        path: name('equiTriangle'),
        pathPosition: 0.25,
    
    }).clone({
        name: name('pentagon-bear'),
        path: name('pentagon'),
        pathPosition: 0.3,
    
    }).clone({
        name: name('hexagon-bear'),
        path: name('hexagon'),
        pathPosition: 0.35,
    
    }).clone({
        name: name('11sides-bear'),
        path: name('11sides'),
        pathPosition: 0.4,
    
    }).clone({
        name: name('5star-bear'),
        path: name('5star'),
        pathPosition: 0.45,
    
    }).clone({
        name: name('6star-bear'),
        path: name('6star'),
        pathPosition: 0.5,
    
    }).clone({
        name: name('twistedstar-bear'),
        path: name('twistedstar'),
        pathPosition: 0.55,
    
    }).clone({
        name: name('spiral1-bear'),
        path: name('spiral1'),
        pathPosition: 0,
    
    }).clone({
        name: name('spiral2-bear'),
        path: name('spiral2'),
        pathPosition: 0.25,
    
    }).clone({
        name: name('spiral3-bear'),
        path: name('spiral3'),
        pathPosition: 0.5,
    
    }).clone({
        name: name('spiral4-bear'),
        path: name('spiral4'),
        pathPosition: 0.75,
    
    }).clone({
        name: name('tooth-cog-bear'),
        path: name('tooth-cog'),
        pathPosition: 0,
    
    }).clone({
        name: name('blade-tooth-cog-bear'),
        path: name('blade-tooth-cog'),
        pathPosition: 0.3,
    
    }).clone({
        name: name('twist-tooth-cog-bear'),
        path: name('twist-tooth-cog'),
        pathPosition: 0.6,
    
    }).clone({
        name: name('hill-cog-bear'),
        path: name('hill-cog'),
        pathPosition: 0.1,
    
    }).clone({
        name: name('blade-hill-cog-bear'),
        path: name('blade-hill-cog'),
        pathPosition: 0.4,
    
    }).clone({
        name: name('twist-hill-cog-bear'),
        path: name('twist-hill-cog'),
        pathPosition: 0.7,
    
    }).clone({
        name: name('smooth-cog-bear'),
        path: name('smooth-cog'),
        pathPosition: 0.2,
    
    }).clone({
        name: name('blade-smooth-cog-bear'),
        path: name('blade-smooth-cog'),
        pathPosition: 0.5,
    
    }).clone({
        name: name('twist-smooth-cog-bear'),
        path: name('twist-smooth-cog'),
        pathPosition: 0.8,
    });
  • §

    Scene animation

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

    const report = reportSpeed('#reportmessage');
  • §

    Create the Display cycle animation

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

    Development and testing

    console.log(scrawl.library);