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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

- §

  # Demo Filters 101

  Using assets in the filter stream; filter compositing

- §

  Run code

      import * as scrawl from '../source/scrawl.js';

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

- §

  #### Scene setup

      const canvas = scrawl.library.canvas.mycanvas;

      canvas.setBase({
          compileOrder: 1,
      });

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  Create the assets

      scrawl.importDomImage('.flowers');

      canvas.buildCell({

          name: 'star-cell',
          dimensions: [400, 400],
          shown: false,
      });

      scrawl.makeStar({

          name: 'my-star',
          group: 'star-cell',

          radius1: 200,
          radius2: 100,

          roll: 60,

          points: 4,

          start: ['center', 'center'],
          handle: ['center', 'center'],

          fillStyle: 'blue',
          strokeStyle: 'red',
          lineWidth: 10,
          method: 'fillThenDraw',
      });

      canvas.buildCell({

          name: 'wheel-cell',
          dimensions: [400, 400],
          shown: false,
      });

      scrawl.makeWheel({

          name: 'my-wheel',
          group: 'wheel-cell',

          radius: 150,

          startAngle: 30,
          endAngle: -30,
          includeCenter: true,

          start: ['center', 'center'],
          handle: ['center', 'center'],

          fillStyle: 'green',
          strokeStyle: 'yellow',
          lineWidth: 10,
          method: 'fillThenDraw',

          delta: {
              roll: -0.3,
          },
      });

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  Create the filters

      scrawl.makeFilter({

          name: 'star-filter',
          method: 'image',

          asset: 'star-cell',

          width: 400,
          height: 400,

          copyWidth: 400,
          copyHeight: 400,

          lineOut: 'star',

      }).clone({

          name: 'wheel-filter',
          asset: 'wheel-cell',
          lineOut: 'wheel',
      });

      const imageFilter = scrawl.makeFilter({

          name: 'flower-filter',
          method: 'image',

          asset: 'iris',

          width: '80%',
          height: '80%',
          copyWidth: '100%',
          copyHeight: '100%',

          lineOut: 'flower',
      });

      const composeFilter = scrawl.makeFilter({

          name: 'block-filter',
          method: 'compose',

          lineIn: 'star',
          lineMix: 'source',

          offsetX: 30,
          offsetY: 30,

          compose: 'source-over',
      });

- §

  Display the filter in a Block entity

      scrawl.makeGradient({
          name: 'linear',
          endX: '100%',
          colors: [
              [0, 'blue'],
              [495, 'red'],
              [500, 'yellow'],
              [505, 'red'],
              [999, 'green']
          ],
      });

      scrawl.makeBlock({

          name: 'display-block',
          start: ['center', 'center'],
          handle: ['center', 'center'],
          dimensions: ['90%', '90%'],
          roll: -20,

          lineWidth: 10,
          fillStyle: 'linear',
          lockFillStyleToEntity: true,
          strokeStyle: 'coral',
          method: 'fillThenDraw',

- §

  Load in the three image filters, then the compose filter to combine two of them

  - the results display in a Block entity!

          filters: ['star-filter', 'wheel-filter', 'flower-filter', 'block-filter'],
      });

- §

  #### Scene animation

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

      const report = reportSpeed('#reportmessage', function () {

- §

  @ts-expect-error

          return `    Offset - x: ${ox.value}, y: ${oy.value}\n    Opacity: ${opacity.value}`;
      });

- §

  Create the Display cycle animation

      scrawl.makeRender({

          name: "demo-animation",
          target: canvas,
          afterShow: report,
      });

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  #### User interaction

  Setup form observer functionality

      scrawl.makeUpdater({

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

          target: composeFilter,

          useNativeListener: true,
          preventDefault: true,

          updates: {

              source: ['lineIn', 'raw'],
              destination: ['lineMix', 'raw'],
              composite: ['compose', 'raw'],
              opacity: ['opacity', 'float'],
              'offset-x': ['offsetX', 'round'],
              'offset-y': ['offsetY', 'round'],
          },
      });

- §

  Setup form

      const ox = document.querySelector('#offset-x'),
          oy = document.querySelector('#offset-y'),
          opacity = document.querySelector('#opacity');

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  @ts-expect-error

      opacity.value = 1;

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  @ts-expect-error

      ox.value = 30;

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  @ts-expect-error

      oy.value = 30;

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  @ts-expect-error

      document.querySelector('#source').options.selectedIndex = 2;

- §

  @ts-expect-error

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

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  @ts-expect-error

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

- §

  #### Drag-and-Drop image loading functionality

      addImageDragAndDrop(canvas, '#my-image-store', imageFilter);

- §

  #### Development and testing

      console.log(scrawl.library);