diff --git a/public/css/style.css b/public/css/style.css
index df05536..690b5a1 100644
--- a/public/css/style.css
+++ b/public/css/style.css
@@ -4980,7 +4980,7 @@ body.sternenhimmel-page #tooltip {
transition: opacity 0.12s;
z-index: 20;
line-height: 1.65;
- max-width: 215px;
+ max-width: 240px;
}
body.sternenhimmel-page #tooltip.visible { opacity: 1; }
body.sternenhimmel-page #tooltip .tt-name {
@@ -5001,6 +5001,19 @@ body.sternenhimmel-page #tooltip .tt-messier-sc { color: #c4b5fd; }
body.sternenhimmel-page #tooltip .tt-messier-pn { color: #67e8f9; }
body.sternenhimmel-page #tooltip .tt-messier-gx { color: #fcd34d; }
body.sternenhimmel-page #tooltip .tt-messier-as { color: #d1d5db; }
+body.sternenhimmel-page #tooltip .tt-media {
+ margin: 6px 0 8px;
+ border: 1px solid rgba(74, 158, 255, 0.18);
+ background: rgba(6, 14, 24, 0.88);
+ overflow: hidden;
+ }
+body.sternenhimmel-page #tooltip .tt-image {
+ display: block;
+ width: 100%;
+ aspect-ratio: 1.4 / 1;
+ object-fit: cover;
+ background: rgba(2, 6, 12, 0.95);
+ }
body.sternenhimmel-page .star-popup-fallback {
position: fixed;
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diff --git a/public/sternenhimmel.php b/public/sternenhimmel.php
index 3e07729..4b49e1a 100644
--- a/public/sternenhimmel.php
+++ b/public/sternenhimmel.php
@@ -1140,17 +1140,175 @@ function drawAltazGrid() {
// ═══════════════════════════════════════════════════════════════════════════════
// FARBE AUS B-V
// ═══════════════════════════════════════════════════════════════════════════════
-function bvToColor(bv) {
- if (isNaN(bv) || bv === undefined) return '#ffffff';
- if (bv < -0.30) return '#9bb0ff';
- if (bv < -0.10) return '#aabfff';
- if (bv < 0.00) return '#cad7ff';
- if (bv < 0.20) return '#f8f7ff';
- if (bv < 0.40) return '#fff4e8';
- if (bv < 0.60) return '#ffddb4';
- if (bv < 0.80) return '#ffcc6f';
- if (bv < 1.20) return '#ffaa44';
- return '#ff6622';
+function clamp01(v) {
+ return Math.max(0, Math.min(1, v));
+}
+
+function toHexByte(v) {
+ return Math.round(Math.max(0, Math.min(255, v))).toString(16).padStart(2, '0');
+}
+
+function rgbToHex(r, g, b) {
+ return '#' + toHexByte(r) + toHexByte(g) + toHexByte(b);
+}
+
+function hexToRgb(hex) {
+ const value = String(hex || '').trim().replace('#', '');
+ if (!/^[0-9a-f]{6}$/i.test(value)) return { r: 255, g: 255, b: 255 };
+ return {
+ r: parseInt(value.slice(0, 2), 16),
+ g: parseInt(value.slice(2, 4), 16),
+ b: parseInt(value.slice(4, 6), 16),
+ };
+}
+
+function colorWithAlpha(hex, alpha) {
+ const rgb = hexToRgb(hex);
+ return `rgba(${rgb.r}, ${rgb.g}, ${rgb.b}, ${clamp01(alpha)})`;
+}
+
+function temperatureToColor(tempK) {
+ const temp = Math.max(1000, Math.min(40000, tempK)) / 100;
+ let r, g, b;
+
+ if (temp <= 66) {
+ r = 255;
+ g = 99.4708025861 * Math.log(temp) - 161.1195681661;
+ b = temp <= 19 ? 0 : 138.5177312231 * Math.log(temp - 10) - 305.0447927307;
+ } else {
+ r = 329.698727446 * Math.pow(temp - 60, -0.1332047592);
+ g = 288.1221695283 * Math.pow(temp - 60, -0.0755148492);
+ b = 255;
+ }
+
+ // Leicht entsättigen, damit die Darstellung natürlicher und weniger "neonhaft" wirkt.
+ const mix = 0.18;
+ r = r * (1 - mix) + 255 * mix;
+ g = g * (1 - mix) + 245 * mix;
+ b = b * (1 - mix) + 235 * mix;
+
+ return rgbToHex(r, g, b);
+}
+
+function bvToTemperature(bv) {
+ const x = Math.max(-0.4, Math.min(2.0, Number(bv)));
+ return 4600 * (
+ 1 / (0.92 * x + 1.7) +
+ 1 / (0.92 * x + 0.62)
+ );
+}
+
+function spectralClassToColor(spect) {
+ const code = String(spect || '').trim().toUpperCase();
+ if (!code) return '#ffffff';
+ const type = code[0];
+
+ if (type === 'O') return temperatureToColor(32000);
+ if (type === 'B') return temperatureToColor(18000);
+ if (type === 'A') return temperatureToColor(9000);
+ if (type === 'F') return temperatureToColor(7200);
+ if (type === 'G') return temperatureToColor(5800);
+ if (type === 'K') return temperatureToColor(4500);
+ if (type === 'M') return temperatureToColor(3200);
+ return '#ffffff';
+}
+
+function bvToColor(bv, spect) {
+ if (Number.isFinite(Number(bv))) {
+ return temperatureToColor(bvToTemperature(bv));
+ }
+ return spectralClassToColor(spect);
+}
+
+const STAR_SPRITE_CACHE = new Map();
+
+function getStarSprite(radius, color, magnitude) {
+ const quantRadius = Math.max(0.28, Math.round(radius * 8) / 8);
+ const brightFactor = clamp01((2.2 - magnitude) / 4.5);
+ const brightBucket = Math.round(brightFactor * 4);
+ const spikeMode = magnitude < 0.5 ? 2 : (magnitude < 1.4 ? 1 : 0);
+ const key = [quantRadius.toFixed(2), color, brightBucket, spikeMode].join('|');
+ if (STAR_SPRITE_CACHE.has(key)) return STAR_SPRITE_CACHE.get(key);
+
+ const outerHaloRadius = Math.max(quantRadius * 3.4, 1.15);
+ const innerHaloRadius = Math.max(quantRadius * 1.65, 0.72);
+ const coreRadius = Math.max(quantRadius * 0.34, 0.18);
+ const spikeLength = spikeMode ? Math.max(quantRadius * (7 + brightFactor * 8), 4.5) : 0;
+ const pad = Math.ceil(Math.max(outerHaloRadius, spikeLength) + 3);
+ const size = pad * 2;
+
+ const spriteCanvas = document.createElement('canvas');
+ spriteCanvas.width = size;
+ spriteCanvas.height = size;
+ const sctx = spriteCanvas.getContext('2d');
+ const cxSprite = pad;
+ const cySprite = pad;
+
+ const outerHalo = sctx.createRadialGradient(cxSprite, cySprite, 0, cxSprite, cySprite, outerHaloRadius);
+ outerHalo.addColorStop(0.00, colorWithAlpha(color, 0.05 + brightFactor * 0.05));
+ outerHalo.addColorStop(0.20, colorWithAlpha(color, 0.02 + brightFactor * 0.03));
+ outerHalo.addColorStop(0.55, colorWithAlpha(color, 0.006 + brightFactor * 0.012));
+ outerHalo.addColorStop(1.00, 'transparent');
+ sctx.fillStyle = outerHalo;
+ sctx.beginPath();
+ sctx.arc(cxSprite, cySprite, outerHaloRadius, 0, Math.PI * 2);
+ sctx.fill();
+
+ const innerHalo = sctx.createRadialGradient(cxSprite, cySprite, 0, cxSprite, cySprite, innerHaloRadius);
+ innerHalo.addColorStop(0.00, colorWithAlpha(color, 0.20));
+ innerHalo.addColorStop(0.35, colorWithAlpha(color, 0.05 + brightFactor * 0.04));
+ innerHalo.addColorStop(1.00, 'transparent');
+ sctx.fillStyle = innerHalo;
+ sctx.beginPath();
+ sctx.arc(cxSprite, cySprite, innerHaloRadius, 0, Math.PI * 2);
+ sctx.fill();
+
+ if (spikeMode) {
+ const spikeAlpha = 0.02 + brightFactor * 0.07;
+ sctx.strokeStyle = colorWithAlpha(color, spikeAlpha);
+ sctx.lineWidth = 0.55 + brightFactor * 0.35;
+ sctx.lineCap = 'round';
+ sctx.beginPath();
+ sctx.moveTo(cxSprite - spikeLength, cySprite);
+ sctx.lineTo(cxSprite + spikeLength, cySprite);
+ sctx.moveTo(cxSprite, cySprite - spikeLength);
+ sctx.lineTo(cxSprite, cySprite + spikeLength);
+ if (spikeMode === 2) {
+ const diag = spikeLength * 0.72;
+ sctx.moveTo(cxSprite - diag, cySprite - diag);
+ sctx.lineTo(cxSprite + diag, cySprite + diag);
+ sctx.moveTo(cxSprite - diag, cySprite + diag);
+ sctx.lineTo(cxSprite + diag, cySprite - diag);
+ }
+ sctx.stroke();
+ }
+
+ sctx.fillStyle = colorWithAlpha(color, 0.96);
+ sctx.beginPath();
+ sctx.arc(cxSprite, cySprite, quantRadius, 0, Math.PI * 2);
+ sctx.fill();
+
+ sctx.fillStyle = colorWithAlpha('#ffffff', 0.56 + brightFactor * 0.16);
+ sctx.beginPath();
+ sctx.arc(cxSprite, cySprite, coreRadius, 0, Math.PI * 2);
+ sctx.fill();
+
+ const sprite = { canvas: spriteCanvas, pad };
+ STAR_SPRITE_CACHE.set(key, sprite);
+ return sprite;
+}
+
+function drawStarSprite(x, y, radius, color, magnitude) {
+ if (magnitude > 3.4) {
+ ctx.fillStyle = colorWithAlpha(color, 0.92);
+ ctx.beginPath();
+ ctx.arc(x, y, Math.max(radius * 0.72, 0.32), 0, Math.PI * 2);
+ ctx.fill();
+ return;
+ }
+
+ const sprite = getStarSprite(radius, color, magnitude);
+ ctx.drawImage(sprite.canvas, x - sprite.pad, y - sprite.pad);
}
// ═══════════════════════════════════════════════════════════════════════════════
@@ -1390,19 +1548,9 @@ function render() {
const t = (magLimit - s.mag) / (magLimit + 1.5);
const radius = Math.max(0.4, t * 3.6);
- const color = bvToColor(s.ci);
+ const color = bvToColor(s.ci, s.spect);
- if (s.mag < CFG.stars.glowBelowMag) {
- const glow = createSafeRadialGradient(pt.x, pt.y, 0, pt.x, pt.y, radius * 6);
- if (glow) {
- glow.addColorStop(0, color + 'bb'); glow.addColorStop(0.3, color + '33');
- glow.addColorStop(1, 'transparent');
- ctx.fillStyle = glow;
- ctx.beginPath(); ctx.arc(pt.x, pt.y, radius * 6, 0, Math.PI * 2); ctx.fill();
- }
- }
- ctx.fillStyle = color;
- ctx.beginPath(); ctx.arc(pt.x, pt.y, radius, 0, Math.PI * 2); ctx.fill();
+ drawStarSprite(pt.x, pt.y, radius, color, s.mag);
if (labelStars && s.proper && s.mag < CFG.stars.labelBelowMag) {
ctx.fillStyle = CFG.stars.colorLabel;
@@ -1928,6 +2076,17 @@ document.getElementById('fileInput').addEventListener('change', function(e) {
// TOOLTIP
// ═══════════════════════════════════════════════════════════════════════════════
let _mouseDownPos = null;
+
+function enhanceMessierTooltip(tip, obj) {
+ const image = tip.querySelector('.tt-image');
+ if (!image) return;
+ image.addEventListener('error', function handleError() {
+ const media = tip.querySelector('.tt-media');
+ if (media) media.remove();
+ }, { once: true });
+ image.src = 'images/messier/m' + obj.m + '.png';
+}
+
canvas.addEventListener('mousedown', function(e) {
_mouseDownPos = { x: e.clientX, y: e.clientY };
}, true);
@@ -1998,12 +2157,14 @@ canvas.addEventListener('click', function(e) {
tip.innerHTML =
'M' + obj.m +
(obj.name ? ' – ' + obj.name : '') + '' +
+ '' +
'Typ: ' + (typeNames[obj.type] || obj.type) + '
' +
'Mag: ' + obj.mag.toFixed(1) + '
' +
'Größe: '+ obj.size + '′
' +
'Alt: ' + obj._alt.toFixed(1) + '°
' +
'Az: ' + obj._az.toFixed(1) + '°
' +
'RA: ' + obj.ra.toFixed(4) + ' h Dec: ' + obj.dec.toFixed(3) + '°';
+ enhanceMessierTooltip(tip, obj);
tip.className = 'visible'; positionTooltip(e); return;
}
}