82 lines
2.7 KiB
JavaScript
82 lines
2.7 KiB
JavaScript
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// modules/panels/heatmap.js — Commit heatmap floor overlay
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import * as THREE from 'three';
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import { state } from '../core/state.js';
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import { HEATMAP_ZONES } from '../data/gitea.js';
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import { GLASS_RADIUS } from '../terrain/island.js';
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const HEATMAP_SIZE = 512;
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const HEATMAP_ZONE_SPAN_RAD = Math.PI / 2;
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const heatmapCanvas = document.createElement('canvas');
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heatmapCanvas.width = HEATMAP_SIZE;
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heatmapCanvas.height = HEATMAP_SIZE;
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const heatmapTexture = new THREE.CanvasTexture(heatmapCanvas);
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const heatmapMat = new THREE.MeshBasicMaterial({
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map: heatmapTexture, transparent: true, opacity: 0.9,
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depthWrite: false, blending: THREE.AdditiveBlending, side: THREE.DoubleSide,
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});
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let heatmapMesh;
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export function drawHeatmap() {
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const ctx = heatmapCanvas.getContext('2d');
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const cx = HEATMAP_SIZE / 2;
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const cy = HEATMAP_SIZE / 2;
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const r = cx * 0.96;
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ctx.clearRect(0, 0, HEATMAP_SIZE, HEATMAP_SIZE);
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ctx.save();
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ctx.beginPath();
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ctx.arc(cx, cy, r, 0, Math.PI * 2);
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ctx.clip();
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for (const zone of HEATMAP_ZONES) {
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const intensity = state.zoneIntensity[zone.name] || 0;
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if (intensity < 0.01) continue;
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const [rr, gg, bb] = zone.color;
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const baseRad = zone.angleDeg * (Math.PI / 180);
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const startRad = baseRad - HEATMAP_ZONE_SPAN_RAD / 2;
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const endRad = baseRad + HEATMAP_ZONE_SPAN_RAD / 2;
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const gx = cx + Math.cos(baseRad) * r * 0.55;
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const gy = cy + Math.sin(baseRad) * r * 0.55;
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const grad = ctx.createRadialGradient(gx, gy, 0, gx, gy, r * 0.75);
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grad.addColorStop(0, `rgba(${rr},${gg},${bb},${0.65 * intensity})`);
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grad.addColorStop(0.45, `rgba(${rr},${gg},${bb},${0.25 * intensity})`);
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grad.addColorStop(1, `rgba(${rr},${gg},${bb},0)`);
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ctx.beginPath();
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ctx.moveTo(cx, cy);
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ctx.arc(cx, cy, r, startRad, endRad);
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ctx.closePath();
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ctx.fillStyle = grad;
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ctx.fill();
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if (intensity > 0.05) {
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const labelX = cx + Math.cos(baseRad) * r * 0.62;
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const labelY = cy + Math.sin(baseRad) * r * 0.62;
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ctx.font = `bold ${Math.round(13 * intensity + 7)}px "Courier New", monospace`;
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ctx.fillStyle = `rgba(${rr},${gg},${bb},${Math.min(intensity * 1.2, 0.9)})`;
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ctx.textAlign = 'center';
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ctx.textBaseline = 'middle';
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ctx.fillText(zone.name, labelX, labelY);
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}
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}
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ctx.restore();
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heatmapTexture.needsUpdate = true;
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}
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export function init(scene) {
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heatmapMesh = new THREE.Mesh(
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new THREE.CircleGeometry(GLASS_RADIUS, 64),
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heatmapMat
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);
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heatmapMesh.rotation.x = -Math.PI / 2;
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heatmapMesh.position.y = 0.005;
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heatmapMesh.userData.zoomLabel = 'Activity Heatmap';
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scene.add(heatmapMesh);
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}
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export function update(elapsed) {
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heatmapMat.opacity = 0.75 + Math.sin(elapsed * 0.6) * 0.2;
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}
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