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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 Filters 021

  Filter parameters: corrode

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  Run code

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

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

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  #### Scene setup

      const canvas = scrawl.library.canvas.mycanvas;

      scrawl.importDomImage('.flowers');

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  Create the filter

      const myFilter = scrawl.makeFilter({

          name: 'corrode',
          method: 'corrode',
      });

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  … And apply it to the canvas’s base Cell

      canvas.setBase({
          filters: ['corrode'],
      })

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  Create the test entitys

      const piccy = scrawl.makePicture({

          name: 'test-image',

          asset: 'iris',

          start: [380, 100],
          dimensions: [200, 200],
          copyDimensions: ['100%', '100%'],

          lineWidth: 4,
          strokeStyle: 'yellow',

          method: 'fillThenDraw',
      });

      scrawl.makeWheel({

          name: 'test-star-solid',

          radius: 90,

          start: [100, 100],
          handle: ['center', 'center'],

          fillStyle: 'orange',
          strokeStyle: 'purple',
          lineWidth: 10,
          method: 'fill',

      }).clone({

          name: 'test-star-outline',
          startY: 200,
          method: 'draw',

      }).clone({

          name: 'test-star-both',
          startY: 300,
          method: 'fillThenDraw',
      });

      scrawl.makePhrase({

          name: 'greeting-one',

          text: 'Hello',

          font: '130px bold sans-serif',

          lineWidth: 8,
          method: 'draw',

          start: [210, 370],
          width: 400,
          roll: -82,

      }).clone({

          name: 'greeting-two',
          text: 'World!',
          method: 'fill',
          start: [350, 10],
          size: '70px',
          roll: 5,
      });

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  #### Scene animation

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

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

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  @ts-expect-error

          return `    Matrix dimensions - width: ${matrix_width.value} height: ${matrix_height.value}\n    Matrix offset - x: ${matrix_offset_x.value} y: ${matrix_offset_y.value}\n    Opacity - ${opacity.value}`;
      });

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  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: myFilter,

          useNativeListener: true,
          preventDefault: true,

          updates: {

              matrix_width: ['width', 'round'],
              matrix_height: ['height', 'round'],
              matrix_offset_x: ['offsetX', 'round'],
              matrix_offset_y: ['offsetY', 'round'],

              includeRed: ['includeRed', 'boolean'],
              includeGreen: ['includeGreen', 'boolean'],
              includeBlue: ['includeBlue', 'boolean'],
              includeAlpha: ['includeAlpha', 'boolean'],

              opacity: ['opacity', 'float'],

              operation: ['operation', 'raw'],
          },
      });

      scrawl.addNativeListener(['input', 'change'], (e) => {

          const val = (e.target.value === '0') ? false : true;

          canvas.base.set({ memoizeFilterOutput: val });

      }, '#memoizeFilterOutput');

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  Setup form

      const matrix_width = document.querySelector('#matrix_width'),
          matrix_height = document.querySelector('#matrix_height'),
          matrix_offset_x = document.querySelector('#matrix_offset_x'),
          matrix_offset_y = document.querySelector('#matrix_offset_y'),
          opacity = document.querySelector('#opacity');

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  @ts-expect-error

      matrix_width.value = 3;

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  @ts-expect-error

      matrix_height.value = 3;

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  @ts-expect-error

      matrix_offset_x.value = 1;

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  @ts-expect-error

      matrix_offset_y.value = 1;

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  @ts-expect-error

      opacity.value = 1;

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  @ts-expect-error

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

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  @ts-expect-error

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

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  @ts-expect-error

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

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  @ts-expect-error

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

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  @ts-expect-error

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

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  @ts-expect-error

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

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

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

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  #### Development and testing

      console.log(scrawl.library);