Electromagnetic operational

Presence Field

show collaborators as live influence, not static avatars

Running the actual pattern live via applyPattern() — switch the substrate, stack overlays, watch the signals, or reverse the dynamics. Not a mock.

"Presence Field" — show collaborators as live influence, not static avatars. It has a charge layer (attract/repel charged matter), a propagate layer (travelling waves through the medium), a fieldflow layer (solar prominences, aurora, plasma streams, guided matter), a memory layer (a decaying trail / hysteresis), and a link layer (ropes / cloth between neighbours). Matter follows the field geometry because of fieldflow, not the field-owning force itself. The active render stack is field-lines, links, heatmap, particles.

Each focused collaborator is a charge emitting signal; propagate carries it, fieldflow draws presence toward shared objects, and recent edits cool into memory. Electric pushes, magnetic bends, fieldflow carries.

Runtime tokens: charge attract/repel charged matterpropagate travelling waves through the mediumfieldflow solar prominences, aurora, plasma streams, guided mattermemory a decaying trail / hysteresislink ropes / cloth between neighbours
Concepts: presence
Metrics: presence a semantic lane — drive it with data-field-<metric> (or a domain model); without that its --field-<metric> stays inertrecency computed every frame by the platform (proximity · engagement · relationships · age)signal a semantic lane — drive it with data-field-<metric> (or a domain model); without that its --field-<metric> stays inertattention computed every frame by the platform (proximity · engagement · relationships · age) presence, signal are host-supplied lanes — drive them with data-field-<metric> (or a domain model); without that, their --field-* stays inert.
Diagnostics: topology causality heatmap
Render: field-lines · links · heatmap · particles
Reduced motion: a collaborator rail with recent-edit marks and static presence badges
Without motion: each collaborator is a labelled badge with a recency timestamp and the object they are near

Copy this pattern

<field-root></field-root>
  <div data-body="charge" data-strength="0.9" data-range="360" data-spin="1" data-feedback></div>
  <div data-body="propagate" data-strength="0.6" data-range="320"></div>
  <div data-body="fieldflow" data-strength="0.7" data-range="0"></div>
  <div data-body="memory" data-strength="0.5" data-range="260"></div>
  <div data-body="link" data-strength="0.6" data-range="300"></div>

<script type="module">
  import '@fundamental-engine/elements';
</script>

<field-root></field-root>
  <div data-body="charge" data-strength="0.9" data-range="360" data-spin="1" data-feedback></div>
  <div data-body="propagate" data-strength="0.6" data-range="320"></div>
  <div data-body="fieldflow" data-strength="0.7" data-range="0"></div>
  <div data-body="memory" data-strength="0.5" data-range="260"></div>
  <div data-body="link" data-strength="0.6" data-range="300"></div>

import { FieldField } from '@fundamental-engine/react';

export default function PresenceField() {
  return (
    <FieldField>
      <div data-body="charge" data-strength="0.9" data-range="360" data-spin="1" data-feedback />
      <div data-body="propagate" data-strength="0.6" data-range="320" />
      <div data-body="fieldflow" data-strength="0.7" data-range="0" />
      <div data-body="memory" data-strength="0.5" data-range="260" />
      <div data-body="link" data-strength="0.6" data-range="300" />
    </FieldField>
  );
}

{
  "id": "presence-field",
  "name": "Presence Field",
  "intent": "show collaborators as live influence, not static avatars",
  "naturalField": "electromagnetic",
  "primitives": [
    "charge",
    "propagate",
    "fieldflow",
    "memory",
    "link"
  ],
  "bodies": [
    {
      "body": "charge",
      "strength": 0.9,
      "range": 360,
      "spin": 1,
      "feedback": true
    },
    {
      "body": "propagate",
      "strength": 0.6,
      "range": 320
    },
    {
      "body": "fieldflow",
      "strength": 0.7,
      "range": 0
    },
    {
      "body": "memory",
      "strength": 0.5,
      "range": 260
    },
    {
      "body": "link",
      "strength": 0.6,
      "range": 300
    }
  ],
  "relationships": [
    {
      "from": "collaborator",
      "to": "object",
      "type": "present-at",
      "strength": 0.7
    }
  ],
  "render": [
    "field-lines",
    "links",
    "heatmap",
    "particles"
  ],
  "metrics": [
    "presence",
    "recency",
    "signal",
    "attention"
  ],
  "diagnostics": [
    "topology",
    "causality",
    "heatmap"
  ],
  "accessibility": {
    "reducedMotion": "a collaborator rail with recent-edit marks and static presence badges",
    "meaningWithoutMotion": "each collaborator is a labelled badge with a recency timestamp and the object they are near"
  },
  "notes": "Each focused collaborator is a charge emitting signal; propagate carries it, fieldflow draws presence toward shared objects, and recent edits cool into memory. Electric pushes, magnetic bends, fieldflow carries.",
  "tier": "operational",
  "status": "shipped",
  "concepts": [
    "presence"
  ]
}

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See also