setpoint

setpoint is a cursor rule for Cursor from Ocean-Industries-Concept-Lab/openbridge-webcomponents. It costs 0 tokens per session (4,341 once invoked), scanned A, original, Apache-2.0.

A set of rules for the shared setpoint system in Openbridge instrument components. A setpoint is a marker showing a target value, and this system draws it across linear, circular, and thruster displays.

In plain words
What is it for?
Use it when changing setpoint state, markers, animations, or rendering in bar, gauge, navigation, compass, heading, and thruster instruments.
Why use it?
Changes to shared setpoint code can affect more than 15 instruments and several rendering paths. The rules identify the shared files and the different cases that must be checked.

Cursor rule for Cursor

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/ocean-industries-concept-lab/openbridge-webcomponents/setpoint
Clone the repo
git clone --depth 1 https://github.com/Ocean-Industries-Concept-Lab/openbridge-webcomponents

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for setpoint

README.md
[![agentmods](https://agentmods.dev/badge/rules/ocean-industries-concept-lab/openbridge-webcomponents/setpoint.svg)](https://agentmods.dev/rules/ocean-industries-concept-lab/openbridge-webcomponents/setpoint)
Your own site
<a href="https://agentmods.dev/rules/ocean-industries-concept-lab/openbridge-webcomponents/setpoint"><img src="https://agentmods.dev/badge/rules/ocean-industries-concept-lab/openbridge-webcomponents/setpoint.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 4,341 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.04341
Opus 5 $0.00000 $0.02171
Sonnet 5 $0.00000 $0.00868
Haiku 4.5 $0.00000 $0.00434

Measured 4d ago against content hash c0adc3ab1174, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

setpoint scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.cursor/rules/setpoint.mdc · 375 lines

How it starts

The opening of the file, as written. The whole thing — 375 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Setpoint System

These instructions apply to the setpoint subsystem — the cross-cutting design layer, state management, and animation logic used by all instrument components that display a setpoint marker.

⚠️ IMPORTANT: Cross-Cutting Concern

The setpoint system spans three rendering paths and 15+ instrument components:

  • Linear: external-scale.tsbar-vertical, bar-horizontal, gauge-vertical, gauge-horizontal, gauge-trend
  • Radial: watch.tscompass, heading, rudder, speed-gauge, gauge-radial, instrument-radial
  • Thruster: thruster.tsazimuth-thruster (also uses radial via watch.ts)

When modifying setpoint logic:

  1. Changes to setpoint.ts affect ALL instruments — verify rendering in all three paths
  2. Changes to setpoint-mixin.ts affect single-setpoint instruments (most of them)
  3. Changes to setpoint-bundle.ts affect multi-setpoint instruments (compass, heading, azimuth-thruster)
  4. Rendering changes must be mirrored across external-scale.ts, watch.ts, and thruster.ts

Architecture Overview

The setpoint system is split into three layers:

┌─────────────────────────────────────────────────────────────────────────────┐
│                         setpoint.ts (Design Layer)                         │
│                                                                             │
│  Pure visual states + drawing functions + animation constants               │
│  • SetpointVisualState: notEqual | equal | equalZero | focus               │
│  • SetpointColorMode: enhanced | regular  (internal rendering enum)        │
│  • setpointOverride: boolean  (public API — skips disabled derivation)      │
│  • drawSetpointMarker(): SVG at origin, caller applies transforms          │
│  • computeAtSetpoint(): Unified deadband comparison                        │
│  • deriveRadialSetpointConfig(): State → visual config for radial          │
│  • Animation: SETPOINT_ANIMATION_DURATION_MS, cssSafeAngle(),              │
│    shortestAngularDistance(), getSetpointAnimationDurationMs()              │
└─────────────────────────────────────────────────────────────────────────────┘
                                     │
                    ┌────────────────┴────────────────┐
                    ▼                                 ▼
┌──────────────────────────────┐   ┌──────────────────────────────────────────┐
│  setpoint-mixin.ts           │   │  setpoint-bundle.ts                      │
│  (Single-setpoint API layer) │   │  (Multi-setpoint API layer)              │
│                              │   │                                          │
│  Lit mixin that adds 10      │   │  Plain class — one per setpoint axis.    │
│  @property() declarations    │   │  Same property set as mixin but without  │
│  + computeAtSetpoint() +     │   │  @property() decorators.                │
│  animation state management  │   │  sync() for bulk update in willUpdate() │
│                              │   │  onAnimationEnd callback for re-render  │
│  Used by:                    │   │                                          │
│  • speed-gauge               │   │  Used by:                               │
│  • rudder                    │   │  • compass (_angleSp)                   │
│  • instrument-radial         │   │  • heading (_headingSp)                 │
│  • gauge-radial              │   │  • azimuth-thruster (_angleSp, _thrustSp)│
│  • bar-vertical (indirect)   │   │                                          │
│  • bar-horizontal (indirect) │   │                                          │
│  • gauge-vertical (indirect) │   │                                          │
│  • gauge-horizontal          │   │                                          │
│  • gauge-trend (indirect)    │   │                                          │
└──────────────────────────────┘   └──────────────────────────────────────────┘
                    │                                 │
                    └────────────────┬────────────────┘
                                    ▼
┌─────────────────────────────────────────────────────────────────────────────┐
│                      Three Rendering Paths                                  │
│                                                                             │
│  ┌─────────────────┐  ┌─────────────────┐  ┌─────────────────────────────┐ │
│  │ external-scale   │  │ watch.ts        │  │ thruster.ts               │ │
│  │ (linear bars)    │  │ (radial ring)   │  │ (thrust bar in azimuth)   │ │
│  │                  │  │                  │  │                           │ │
│  │ renderSingle-    │  │ Internal confirm │  │ renderThrusterSetpoint()  │ │
│  │ Setpoint()       │  │ detection +      │  │ with animate/non-animate │ │
│  │ CSS transform    │  │ cssSafeAngle()   │  │ code paths               │ │
│  │ for animation    │  │ short-path anim  │  │                           │ │
│  └─────────────────┘  └─────────────────┘  └─────────────────────────────┘ │
└─────────────────────────────────────────────────────────────────────────────┘

Read the full file on GitHub · 375 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 375 lines · 0 tokens per session scan A c0adc3ab1174

Subscribe to this mod's changes

setpoint is a cursor rule published in the GitHub repository Ocean-Industries-Concept-Lab/openbridge-webcomponents (91 stars, last pushed today), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 4,341 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.