From 7789f8202f60f69ce015b1bc34eb0c076d7545b5 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Sun, 24 May 2020 18:38:08 +0200
Subject: animate train position in map

---
 public/static/js/map-refresh.js | 81 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 public/static/js/map-refresh.js

(limited to 'public/static/js/map-refresh.js')

diff --git a/public/static/js/map-refresh.js b/public/static/js/map-refresh.js
new file mode 100644
index 0000000..b1729c3
--- /dev/null
+++ b/public/static/js/map-refresh.js
@@ -0,0 +1,81 @@
+var j_reqid;
+//var j_stops = [];
+var j_positions = [];
+var j_frame = [];
+var j_frame_i = [];
+
+function dbf_map_parse() {
+	$('#jdata').each(function() {
+		j_reqid = $(this).data('req');
+		/*var route_data = $(this).data('route');
+		if (route_data) {
+			route_data = route_data.split('|');
+			j_stops = [];
+			for (var stop_id in route_data) {
+				var stopdata = route_data[stop_id].split(';');
+				for (var i = 1; i < 5; i++) {
+					stopdata[i] = parseInt(stopdata[i]);
+				}
+				j_stops.push(stopdata);
+			}
+		}*/
+		var positions = $(this).data('poly');
+		if (positions) {
+			positions = positions.split('|');
+			j_positions = [];
+			for (var pos_id in positions) {
+				var posdata = positions[pos_id].split(';');
+				posdata[0] = parseFloat(posdata[0]);
+				posdata[1] = parseFloat(posdata[1]);
+				j_positions.push(posdata);
+			}
+		}
+	});
+}
+
+function dbf_anim_coarse() {
+	if (j_positions.length) {
+		var pos1 = marker.getLatLng();
+		var pos1lat = pos1.lat;
+		var pos1lon = pos1.lng;
+		var pos2 = j_positions.shift();
+		var pos2lat = pos2[0];
+		var pos2lon = pos2[1];
+
+		j_frame_i = 200;
+		j_frame = [];
+
+		// approx 30 Hz -> 60 frames per 2 seconds
+		for (var i = 1; i <= 60; i++) {
+			var ratio = i / 60;
+			j_frame.push([pos1lat + ((pos2lat - pos1lat) * ratio), pos1lon + ((pos2lon - pos1lon) * ratio)]);
+		}
+
+		j_frame_i = 0;
+	}
+}
+
+function dbf_anim_fine() {
+	if (j_frame[j_frame_i]) {
+		marker.setLatLng(j_frame[j_frame_i++]);
+	}
+}
+
+function dbf_map_reload() {
+	$.get('/_ajax_mapinfo/' + j_reqid, function(data) {
+		$('#infobox').html(data);
+		dbf_map_parse();
+		setTimeout(dbf_map_reload, 61000);
+	}).fail(function() {
+		setTimeout(dbf_map_reload, 5000);
+	});
+}
+
+$(document).ready(function() {
+	if ($('#infobox').length) {
+		dbf_map_parse();
+		setInterval(dbf_anim_coarse, 2000);
+		setInterval(dbf_anim_fine, 33);
+		setTimeout(dbf_map_reload, 61000);
+	}
+});
-- 
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