Skip to content

fix: smooth track map marker movement #688

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
tariknz merged 4 commits into from
Aug 9, 2026
Merged

fix: smooth track map marker movement #688

Show file tree
Hide file tree
Changes from 3 commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
58cc663
fix: smooth track map marker movement
tariknz Aug 9, 2026
cb4fb9b
fix: address track map review feedback
tariknz Aug 9, 2026
2f36e01
fix: address track map follow-up review
tariknz Aug 9, 2026
97bb11e
fix: cache track map text metrics
tariknz Aug 9, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 12 additions & 0 deletions src/app/bridge/rendererExposeBridge.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -17,10 +17,12 @@ import type {
ChromiumFlagsBridge,
ChromiumFlagsType,
TelemetryInspectorBridge,
RendererPerfBridge,
} from '@irdashies/types';
import {
isRendererPerfMetricsEnabled,
recordTelemetryCallback,
recordRendererMeasure,
} from '../rendererPerfMetrics';
import {
RENDERER_DATA_SUBSCRIPTION_BRIDGE,
Expand All @@ -29,6 +31,16 @@ import {
import { createSubscriptionBridgeClient, defineBridge } from './defineBridge';

export function exposeBridge() {
if (isRendererPerfMetricsEnabled()) {
defineBridge<RendererPerfBridge>('rendererPerfBridge', {
recordMeasure: (name, durationMs) => {
if (!isRendererPerfMetricsEnabled()) return;
if (name !== 'trackMapAnimationFrame') return;
if (!Number.isFinite(durationMs) || durationMs < 0) return;
recordRendererMeasure(name, durationMs);
},
});
}
const rendererDataSubscriptions =
createSubscriptionBridgeClient<RendererDataStream>(
RENDERER_DATA_SUBSCRIPTION_BRIDGE
Expand Down
20 changes: 19 additions & 1 deletion src/app/rendererPerfMetrics.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,12 +1,16 @@
import { ipcRenderer } from 'electron';
import type { RendererPerfSample } from '@irdashies/types';
import type {
RendererPerfMeasureName,
RendererPerfSample,
} from '@irdashies/types';
import { FixedSampleBuffer } from '../shared/performanceSamples';
import { readRendererPerfArguments } from './perfRendererArguments';

export const PERF_RENDERER_LOG_PREFIX = '[PerfRenderer:JSON] ';

let telemetryCallbackTimes: FixedSampleBuffer | undefined;
let channelCallbackTimes: FixedSampleBuffer | undefined;
let trackMapAnimationFrameTimes: FixedSampleBuffer | undefined;

export function isRendererPerfMetricsEnabled(): boolean {
return telemetryCallbackTimes !== undefined;
Expand All @@ -20,6 +24,15 @@ export function recordChannelCallback(durationMs: number): void {
channelCallbackTimes?.add(durationMs);
}

export function recordRendererMeasure(
name: RendererPerfMeasureName,
durationMs: number
): void {
if (name === 'trackMapAnimationFrame') {
trackMapAnimationFrameTimes?.add(durationMs);
}
}

export function startRendererPerfMetrics(): void {
const config = readRendererPerfArguments();
if (!config.enabled) return;
Expand All @@ -34,6 +47,8 @@ export function startRendererPerfMetrics(): void {
telemetryCallbackTimes = callbackTimes;
const channelTimes = new FixedSampleBuffer(4096);
channelCallbackTimes = channelTimes;
const trackMapFrameTimes = new FixedSampleBuffer(4096);
trackMapAnimationFrameTimes = trackMapFrameTimes;
let intervalStart = performance.now();
let previousFrameTime = 0;
let framesOver25Ms = 0;
Expand All @@ -60,6 +75,7 @@ export function startRendererPerfMetrics(): void {
previousFrameTime = 0;
callbackTimes.reset();
channelTimes.reset();
trackMapFrameTimes.reset();
framesOver25Ms = 0;
framesOver50Ms = 0;
return;
Expand All @@ -77,6 +93,7 @@ export function startRendererPerfMetrics(): void {
frameTimeMs: stats,
telemetryCallbackMs: callbackTimes.summarize(),
channelCallbackMs: channelTimes.summarize(),
trackMapAnimationFrameMs: trackMapFrameTimes.summarize(),

@chatgpt-codex-connector chatgpt-codex-connector Bot Aug 9, 2026

Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

P2 Badge Surface the track-map metric in performance reports

Although the RAF is now wrapped and this field is emitted into the raw renderer sample, tools/perf/analyze.ts never consumes trackMapAnimationFrameMs: its renderer summary and generated table still only report frame time and telemetry callbacks. Consequently normal perf:analyze output cannot display or compare the newly instrumented hot path, so the R13.1 observability requirement remains incomplete. This unchanged analyzer path is fresh evidence beyond the earlier instrumentation comment; add the metric to the analyzer summary/report and its tests.

AGENTS.md reference: AGENTS.md:L12-L18

Useful? React with 👍 / 👎.

telemetryWakeups: callbackTimes.summarize().count,
channelWakeups: channelTimes.summarize().count,
framesOver25Ms,
Expand All @@ -93,6 +110,7 @@ export function startRendererPerfMetrics(): void {
frameTimes.reset();
callbackTimes.reset();
channelTimes.reset();
trackMapFrameTimes.reset();
framesOver25Ms = 0;
framesOver50Ms = 0;
}, reportIntervalMs);
Expand Down
174 changes: 89 additions & 85 deletions src/frontend/components/TrackMap/FlatTrackMapCanvas.tsx
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,7 +1,8 @@
import { useEffect, useLayoutEffect, useMemo, useRef, useState } from 'react';
import { useEffect, useMemo, useRef, useState } from 'react';
import { TrackDriver, TrackDrawing } from './TrackCanvas';
import { getColor, getTailwindStyle } from '@irdashies/utils/colors';
import { useCarIdxOffTrack } from '@irdashies/context';
import { progressToFlatX, useProgressAnimation } from './useProgressAnimation';

export interface FlatTrackMapCanvasProps {
trackDrawing: TrackDrawing;
Expand Down Expand Up @@ -74,6 +75,17 @@ export const FlatTrackMapCanvas = ({
return colors;
}, [drivers, isMultiClass, highlightColor]);

const orderedDrivers = useMemo(
() =>
drivers
.map((entry, interpolationIndex) => ({
...entry,
interpolationIndex,
}))
.sort((a, b) => Number(a.isPlayer) - Number(b.isPlayer)),
[drivers]
);

useEffect(() => {
const canvas = canvasRef.current;
if (!canvas) return;
Expand Down Expand Up @@ -121,7 +133,7 @@ export const FlatTrackMapCanvas = ({
};
}, []);

useLayoutEffect(() => {
useProgressAnimation(drivers, (progressValues, count) => {
const canvas = canvasRef.current;
const ctx = canvas?.getContext('2d');
if (!canvas || !ctx || canvasSize.width === 0) return;
Expand Down Expand Up @@ -193,93 +205,85 @@ export const FlatTrackMapCanvas = ({

// Draw drivers
// Apply scale factor to match curved track map proportions
[...drivers]
.sort((a, b) => Number(a.isPlayer) - Number(b.isPlayer))
.forEach(({ driver, progress, isPlayer, classPosition }) => {
let color = driverColors[driver.CarIdx];
if (!color) return;

const x = HORIZONTAL_PADDING + progress * usableWidth;
const radius =
(isPlayer ? playerCircleSize : driverCircleSize) * circleScale;
const fontSize = radius * (trackmapFontSize / 100);
const originalColor = color.fill;
const livePosition =
driverLivePositions[driver.CarIdx] ?? classPosition;

// highlight leader?
if (!isPlayer && invertLeaderColor && livePosition === 1) {
color = { fill: 'white', text: originalColor };
}
for (const orderedDriver of orderedDrivers) {
const { driver, isPlayer, classPosition, interpolationIndex } =
orderedDriver;
if (interpolationIndex >= count) continue;
const color = driverColors[driver.CarIdx];
if (!color) continue;

// on pit road?
const onPitRoad = !!carIdxIsOnPitRoad?.[driver.CarIdx];
if (onPitRoad) {
color = { fill: '#999999', text: 'white' };
}
const x = progressToFlatX(
progressValues[interpolationIndex],
HORIZONTAL_PADDING,
usableWidth
);
const radius =
(isPlayer ? playerCircleSize : driverCircleSize) * circleScale;
const fontSize = radius * (trackmapFontSize / 100);
const originalColor = color.fill;
let fillColor = color.fill;
let textColor = color.text;
const livePosition = driverLivePositions[driver.CarIdx] ?? classPosition;

ctx.fillStyle = color.fill;
ctx.beginPath();
ctx.arc(x, centerY, radius, 0, 2 * Math.PI);
ctx.fill();

// draw a border?
if (driversOffTrack[driver.CarIdx]) {
ctx.strokeStyle = getColor('yellow', 400);
ctx.lineWidth = 4;
ctx.stroke();
} else if (!isPlayer && invertLeaderColor && livePosition === 1) {
ctx.strokeStyle = originalColor;
ctx.lineWidth = 2;
ctx.stroke();
}
// highlight leader?
if (!isPlayer && invertLeaderColor && livePosition === 1) {
fillColor = 'white';
textColor = originalColor;
}

// on pit road?
const onPitRoad = !!carIdxIsOnPitRoad?.[driver.CarIdx];
if (onPitRoad) {
fillColor = '#999999';
textColor = 'white';
}

if (showCarNumbers) {
ctx.fillStyle = color.text;
ctx.font = `${fontSize}px sans-serif`;
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
let displayText;
if (onPitRoad) {
displayText = 'P';
} else if (displayMode === 'livePosition') {
displayText =
livePosition !== undefined && livePosition > 0
? livePosition.toString()
: '';
} else if (displayMode === 'sessionPosition') {
displayText =
classPosition !== undefined && classPosition > 0
? classPosition.toString()
: '';
} else {
displayText = driver.CarNumber;
}
if (displayText) {
const m = ctx.measureText(displayText);
const visualOffset =
(m.actualBoundingBoxAscent - m.actualBoundingBoxDescent) / 2;
ctx.fillText(displayText, x, centerY + visualOffset);
}
ctx.fillStyle = fillColor;
ctx.beginPath();
ctx.arc(x, centerY, radius, 0, 2 * Math.PI);
ctx.fill();

// draw a border?
if (driversOffTrack[driver.CarIdx]) {
ctx.strokeStyle = getColor('yellow', 400);
ctx.lineWidth = 4;
ctx.stroke();
} else if (!isPlayer && invertLeaderColor && livePosition === 1) {
ctx.strokeStyle = originalColor;
ctx.lineWidth = 2;
ctx.stroke();
}

if (showCarNumbers) {
ctx.fillStyle = textColor;
ctx.font = `${fontSize}px sans-serif`;
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
let displayText;
if (onPitRoad) {
displayText = 'P';
} else if (displayMode === 'livePosition') {
displayText =
livePosition !== undefined && livePosition > 0
? livePosition.toString()
: '';
} else if (displayMode === 'sessionPosition') {
displayText =
classPosition !== undefined && classPosition > 0
? classPosition.toString()
: '';
} else {
displayText = driver.CarNumber;
}
if (displayText) {
const m = ctx.measureText(displayText);
const visualOffset =
(m.actualBoundingBoxAscent - m.actualBoundingBoxDescent) / 2;

@chatgpt-codex-connector chatgpt-codex-connector Bot Aug 9, 2026

Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

P2 Badge Cache text metrics outside the animation paint loop

With the default showCarNumbers setting, moving this drawing callback onto RAF makes measureText allocate a TextMetrics object for every visible driver on every paint (and the curved map does the same in drawDrivers), producing thousands of short-lived objects per second for a full grid. This leaves a substantial per-frame allocation source in the newly introduced hot path despite R13.2; cache the vertical offset by font/display text and refresh it only when snapshot or appearance inputs change.

AGENTS.md reference: AGENTS.md:L12-L18

Useful? React with 👍 / 👎.

ctx.fillText(displayText, x, centerY + visualOffset);
}
});
}, [
canvasSize,
drivers,
driverColors,
invertLeaderColor,
driversOffTrack,
showCarNumbers,
displayMode,
driverCircleSize,
playerCircleSize,
trackmapFontSize,
trackLineWidth,
trackOutlineWidth,
invertTrackColors,
driverLivePositions,
carIdxIsOnPitRoad,
]);
}
}
});

return (
<div className="w-full h-full">
Expand Down
Loading