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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-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/dom-017.js ./demo/dom-018.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-028.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/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/tensorflow-001.js ./demo/tensorflow-002.js ./demo/utilities.js

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  # Demo Canvas 018

  Phrase entity - text along a path

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  Run code

      import {
          library as L,
          makeOval,
          makePhrase,
          makePicture,
          makeRender,
          makeSpiral,
          makeUpdater,
      } from '../source/scrawl.js';

      import { reportSpeed } from './utilities.js';

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  #### Scene setup

  Get a handle to the Canvas wrapper

      const canvas = L.artefact.mycanvas;

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  Namespacing boilerplate

      const namespace = 'demo';
      const name = (n) => `${namespace}-${n}`;

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  Create Shape entitys for paths

      makeOval({

          name: name('oval-path'),

          strokeStyle: 'black',
          method: 'draw',

          startX: 'center',
          startY: 'center',
          handleX: 'center',
          handleY: 'center',

          radiusX: '40%',
          radiusY: '42%',

          useAsPath: true,
      });

      const spiral = makeSpiral({

          name: name('spiral-path'),

          strokeStyle: 'darkgreen',
          method: 'draw',

          startX: 'center',
          startY: 'center',
          handleX: 'center',
          handleY: 'center',

          loops: 5,
          loopIncrement: 1,
          drawFromLoop: 2,

          scale: 40,
          scaleOutline: false,

          flipUpend: true,
          roll: 30,

          useAsPath: true,
      });

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  Create Phrase entitys

      makePhrase({

          name: name('label'),

          text: 'H&epsilon;lj&ouml;!',
          font: 'bold 40px Garamond, serif',

          width: 120,
          handleX: 'center',
          handleY: '70%',

          method: 'fillAndDraw',

          justify: 'center',
          lineHeight: 1,

          fillStyle: 'green',
          strokeStyle: 'gold',

          shadowOffsetX: 2,
          shadowOffsetY: 2,
          shadowBlur: 2,
          shadowColor: 'black',

          path: name('oval-path'),
          lockTo: 'path',
          addPathRotation: true,

          delta: {
              pathPosition: 0.0008,
          }
      });

      const lorem = makePhrase({

          name: name('myPhrase'),

          text: '&shy;§ITALIC§Lorem§/ITALIC§ ipsum §Red-Text§har varit <i>standard 😀</i> &auml;nda sedan §SMALL-CAPS§1500-talet§/SMALL-CAPS§, när-en-ok&aring;nd-§BOLD§bok§DEFAULTS§sättare-tog att antal 🤖 §BOLD§bok§/BOLD§stäver §OVERLINE§och <HIGHLIGHT>blandade§/OVERLINE§ dem</HIGHLIGHT> för §size-24§Red-Text§att§DEFAULTS§ g&ouml;ra, §Letter-spacing-10§ett 🎻 prov§u§exemplar</UNDERLINE>§/Letter-spacing-10§ §MONO§av en §BOLD§b&oacute;k.',

          font: "16px 'Open Sans', 'Fira Sans', 'Lucida Sans', 'Lucida Sans Unicode', 'Trebuchet MS', 'Liberation Sans', 'Nimbus Sans L', sans-serif",

          justify: 'center',

          fillStyle: '#003399',

          method: 'fill',

          textPath: name('spiral-path'),
          textPathPosition: 0.9,

          handleY: 12,

          delta: {
              textPathPosition: -0.0006,
          }
      });

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  Add additional section classes to the library, via our new Phrase entity

      lorem.addSectionClass('Red-Text', { fill: 'red' })
      .addSectionClass('size-24', { size: '24px' })
      .addSectionClass('Letter-spacing-10', { space: 10 })
      .addSectionClass('/Letter-spacing-10', { space: 0 })
      .addSectionClass('MONO', { family: 'monospace' });

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  Create other entitys

      makePicture({

          name: name('bunny'),
          imageSource: 'img/bunny.png',

          width: 26,
          height: 37,

          copyWidth: 26,
          copyHeight: 37,

          handleX: 'center',
          handleY: 'center',

          path: name('oval-path'),
          pathPosition: .50,
          lockTo: 'path',
          addPathRotation: true,

          delta: {
              pathPosition: 0.0008,
          }
      })

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  #### Scene animation

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

      const report = reportSpeed('#reportmessage');

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  Create the Display cycle animation

      makeRender({

          name: name('animation'),
          target: canvas,
          afterShow: report,
      });

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  #### User interaction

  Observer functionality for the spiral Shape entity

      makeUpdater({

          event: ['input', 'change'],
          origin: '.controlItem',

          target: spiral,

          useNativeListener: true,
          preventDefault: true,

          updates: {

              start_xAbsolute: ['startX', 'round'],
              start_yAbsolute: ['startY', 'round'],
              handle_xAbsolute: ['handleX', 'round'],
              handle_yAbsolute: ['handleY', 'round'],

              roll: ['roll', 'float'],
              scale: ['scale', 'float'],
              upend: ['flipUpend', 'boolean'],
              reverse: ['flipReverse', 'boolean'],
          },
      });

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  Observer functionality for the lorem Phrase entity

      makeUpdater({

          event: ['input', 'change'],
          origin: '.controlItem',

          target: lorem,

          useNativeListener: true,
          preventDefault: true,

          updates: {

              overline: ['overlinePosition', 'float'],
              letterSpacing: ['letterSpacing', 'float'],
              family: ['family', 'raw'],
              size_px: ['size', 'px'],

              direction: ['textPathDirection', 'raw'],
              justify: ['justify', 'raw'],
          },
      });

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  Setup form @ts-expect-error

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

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  @ts-expect-error

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

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  @ts-expect-error

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

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  @ts-expect-error

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

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  @ts-expect-error

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

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  @ts-expect-error

      document.querySelector('#scale').value = 40;

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  @ts-expect-error

      document.querySelector('#upend').options.selectedIndex = 1;

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  @ts-expect-error

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

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  @ts-expect-error

      document.querySelector('#direction').options.selectedIndex = 0;

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  @ts-expect-error

      document.querySelector('#justify').options.selectedIndex = 1;

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  @ts-expect-error

      document.querySelector('#overline').value = 0.1;

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  @ts-expect-error

      document.querySelector('#letterSpacing').value = 0;

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  @ts-expect-error

      document.querySelector('#family').options.selectedIndex = 0;

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  @ts-expect-error

      document.querySelector('#size_px').value = 16;

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  #### Development and testing

      console.log(L);