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Added shadows to elevated markers.

This commit is contained in:
Marat Fayzullin 2023-08-29 21:15:33 -04:00
parent b8ee08000f
commit 89d4a92910
1 changed files with 12 additions and 0 deletions
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12
htdocs/lib/MapMarkers.js
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@ -440,6 +440,18 @@ AprsMarker.prototype.draw = function() {
div.style['background-position-y'] = -Math.floor(this.symbol.index / 16) * 24 + 'px';
}
// If entity is flying at a significant altitude...
if (this.altitude >= 500) {
// r = elevation, a = rotation, <x,y> = shadow offset
var r = Math.round(this.altitude / 1000);
var a = - Math.PI * (this.course? this.course : 0) / 180;
var x = r * Math.cos(a);
var y = r * Math.sin(a);
div.style.filter = 'drop-shadow(' + x + 'px ' + y + 'px 0px black)';
} else {
div.style.filter = 'none';
}
if (!this.course) {
div.style.transform = null;
} else if (this.symbol && !AprsMarker.FACING_EAST.includes(this.symbol.symbol)) {