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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 Particles 010

  Net entity: using a shape path as a net template

- §

  Run code

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

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

- §

  #### Scene setup

      const canvas = scrawl.library.artefact.mycanvas;

- §

  For this Demo, we are creating some Shape entitys and using them as a template for generating Net entity Particles.

      scrawl.makeShape({

          name: 'my-first-template-arrow',

          pathDefinition: 'M266.2,703.1 h-178 L375.1,990 l287-286.9 H481.9 C507.4,365,683.4,91.9,911.8,25.5 877,15.4,840.9,10,803.9,10 525.1,10,295.5,313.4,266.2,703.1 z',

          start: ['25%', '25%'],
          handle: ['center', 'center'],

          scale: 0.3,
          roll: -90,
          flipUpend: true,

          useAsPath: true,

          fillStyle: 'gray',

      }).clone({

          name: 'my-second-template-arrow',
          start: ['50%', '50%'],

      }).clone({

          name: 'my-third-template-arrow',
          start: ['75%', '75%'],
      });

- §

  #### Particle physics animation scene

- §

  Create a World object which we can then assign to the Net entity

      const myWorld = scrawl.makeWorld({

          name: 'demo-world',
          tickMultiplier: 2,

      });

- §

  Create a Net entity

      scrawl.makeNet({

          name: 'weak-arrow',
          world: myWorld,

- §

  The Net entity comes with four pre-defined `generate` functions - we will be testing ‘weak-shape’ and ‘strong-shape’ in this demo.

  - We can define our own generate function if the pre-defined functions do not meet our needs.

          generate: 'weak-shape',
          shapeTemplate: 'my-first-template-arrow',
          precision: 40,
          joinTemplateEnds: true,

          postGenerate: function () {

              const regex = RegExp('-0$');

- §

  @ts-expect-error

              this.particleStore.forEach(p => {

                  if (regex.test(p.name)) {

                      p.set({
                          fill: 'red',
                          stroke: 'black',
                          forces: [],
                      });

- §

  @ts-expect-error

                      this.springs.forEach(s => {

                          if (s && s.particleFrom && s.particleFrom.name === p.name) {

                              s.particleFromIsStatic = true;
                          }
                          if (s && s.particleTo && s.particleTo.name === p.name) {

                              s.particleToIsStatic = true;
                          }
                      })
                  }
              });
          },

          showSprings: true,
          showSpringsColor: 'azure',

          springConstant: 100,
          damperConstant: 1,

          engine: 'runge-kutta',

          artefact: scrawl.makeWheel({

              name: 'particle-wheel-1',
              radius: 7,

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

              method: 'fillThenDraw',
              fillStyle: 'yellow',
              strokeStyle: 'gold',

              visibility: false,

              noUserInteraction: true,
              noPositionDependencies: true,
              noFilters: true,
              noDeltaUpdates: true,
          }),

          stampAction: function (artefact, particle, host) {

                  const [ , , ...start] = particle.history[0];

                  artefact.simpleStamp(host, {
                      start,
                      fillStyle: particle.fill,
                      strokeStyle: particle.stroke,
                  });
          },
          particlesAreDraggable: true,

- §

  Clone the Net entity

      }).clone({

          name: 'strong-arrow',
          generate: 'strong-shape',
          shapeTemplate: 'my-second-template-arrow',

          artefact: scrawl.library.artefact['particle-wheel-1'].clone({
              name: 'particle-wheel-2',
          }),

- §

  Clone again

      }).clone({

          name: 'hub-spoke-arrow',
          generate: 'hub-spoke',
          shapeTemplate: 'my-third-template-arrow',

          artefact: scrawl.library.artefact['particle-wheel-1'].clone({
              name: 'particle-wheel-3',
          }),
      });

- §

  #### 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: 'demo-animation',
          target: canvas,
          afterShow: report,
      });

- §

  #### User interaction

  Make the Net entity’s Particles draggable

  - KNOWN BUG - the particles are not draggable on first user mousedown, but are draggable afterwards

      scrawl.makeGroup({

          name: 'my-draggable-group',

      }).addArtefacts('weak-arrow', 'strong-arrow', 'hub-spoke-arrow');

      scrawl.makeDragZone({

          zone: canvas,
          collisionGroup: 'my-draggable-group',
          endOn: ['up', 'leave'],
          preventTouchDefaultWhenDragging: true,
      });

- §

  #### Development and testing

      console.log(scrawl.library);