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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 Canvas 039

  Detecting mouse/pointer cursor movements across a non-base Cell

- §

  Run code

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

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

- §

  #### Scene setup

      const canvas = scrawl.library.canvas.mycanvas;

- §

  Create a second cell for the canvas

  - This cell will act as a moveable layer (start, handle, offset, roll, flipUpend, flipReverse)
  - We will also add entitys to the new Cell, and create a drag zone on it so those entitys can be dragged and dropped across the Cell.

      const mycell = canvas.buildCell({

          name: 'test-cell',

          width: 600,
          height: 400,

          startX: 300,
          startY: 200,

          handleX: 300,
          handleY: 200,

          offsetX: 0,
          offsetY: 0,

          roll: 0,
          scale: 1,

          flipUpend: false,
          flipReverse: false,

          backgroundColor: 'lightblue',
      });

- §

  Make an object to hold functions we’ll use for UI

      const setCursorTo = {

          auto: () => {
              canvas.set({
                  css: {
                      cursor: 'auto',
                  },
              });
          },
          pointer: () => {
              canvas.set({
                  css: {
                      cursor: 'pointer',
                  },
              });
          },
          grabbing: () => {
              canvas.set({
                  css: {
                      cursor: 'grabbing',
                  },
              });
          },
      };

- §

  Create the drag group

      scrawl.makeGroup({

          name: 'drag-group',
          host: mycell,
          checkForEntityHover: true,
          onEntityHover: setCursorTo.pointer,
          onEntityNoHover: setCursorTo.auto,
      })

- §

  Create draggable entitys

      scrawl.makeWheel({

          name: 'wheel-1',
          group: 'drag-group',

          radius: 40,

          start: [250, 150],
          handle: ['center', 'center'],

          fillStyle: 'red',

      }).clone({

          name: 'wheel-2',
          start: [250, 250],
          fillStyle: 'blue',

      }).clone({

          name: 'wheel-3',
          start: [350, 250],
          fillStyle: 'green',

      }).clone({

          name: 'wheel-4',
          start: [350, 150],
          fillStyle: 'yellow',
      });

      scrawl.makeBlock({

          name: 'block-1',
          group: 'test-cell',

          start: ['5%', '5%'],
          dimensions: ['90%', '90%'],

          lineWidth: 5,
          method: 'draw',
      })

      scrawl.makeWheel({

          name: 'mouse-wheel',
          group: 'test-cell',

          radius: 6,
          handle: ['center', 'center'],

          lockTo: 'mouse',
      });

- §

  #### Scene animation

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

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

          const [startX, startY] = mycell.start;
          const [handleX, handleY] = mycell.handle;
          const [offsetX, offsetY] = mycell.offset;
          const [width, height] = mycell.dimensions;

          const {roll, scale} = mycell;

          return `    Start - x: ${startX}, y: ${startY}
          Handle - x: ${handleX}, y: ${handleY}
          Offset - x: ${offsetX}, y: ${offsetY}
          Dimensions - width: ${width}, height: ${height}
          Roll: ${roll}; Scale: ${scale}`;
      });

- §

  Create the Display cycle animation

      scrawl.makeRender({

          name: "demo-animation",
          target: canvas,

- §

  Non-base Cells do not routinely update their local here object, has to be triggered manually

          commence: () => mycell.updateHere(),
          afterCompile: () => canvas.checkHover(),
          afterShow: report,
      });

- §

  #### User interaction

  Create the drag-and-drop zone

      scrawl.makeDragZone({

          zone: canvas,
          collisionGroup: 'drag-group',
          coordinateSource: mycell,
          endOn: ['up', 'leave'],
          preventTouchDefaultWhenDragging: true,
          updateOnStart: setCursorTo.grabbing,
          updateOnEnd: setCursorTo.pointer,
      });

- §

  For this demo we will suppress touchmove functionality over the canvas

      scrawl.addNativeListener('touchmove', (e) => {

          e.preventDefault();
          e.returnValue = false;

      }, canvas.domElement);

- §

  Setup form observer functionality

      scrawl.makeUpdater({

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

          target: mycell,

          useNativeListener: true,
          preventDefault: true,

          updates: {

              width: ['width', 'round'],
              height: ['height', 'round'],

              start_x: ['startX', 'round'],
              start_y: ['startY', 'round'],

              handle_x: ['handleX', 'round'],
              handle_y: ['handleY', 'round'],

              offset_x: ['offsetX', 'round'],
              offset_y: ['offsetY', 'round'],

              roll: ['roll', 'float'],
              scale: ['scale', 'float'],

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

- §

  Setup form @ts-expect-error

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

- §

  @ts-expect-error

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

- §

  @ts-expect-error

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

- §

  @ts-expect-error

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

- §

  @ts-expect-error

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

- §

  @ts-expect-error

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

- §

  @ts-expect-error

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

- §

  @ts-expect-error

      document.querySelector('#scale').value = 1;

- §

  @ts-expect-error

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

- §

  @ts-expect-error

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

- §

  @ts-expect-error

      document.querySelector('#width').value = 600;

- §

  @ts-expect-error

      document.querySelector('#height').value = 400;

- §

  #### Development and testing

      console.log(scrawl.library);