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BangleApps
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Code Pull Requests Activity

Use correct coords (local object 'm') and fix sign error in scrolling

master
marko 2022-02-17 18:34:53 -05:00
parent 2b81b07b2b
commit caf8bc3e47
1 changed files with 5 additions and 4 deletions
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9
apps/openseachart/openseachart.js
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@ -33,8 +33,8 @@ exports.draw = function() {
var s = require("Storage");
var cx = g.getWidth()/2;
var cy = g.getHeight()/2;
var ix = (map.lon-map.center.lon)/map.dlonpx + (map.imgx/2) - cx;
var iy = (map.center.lat-map.lat)/map.dlatpx + (map.imgy/2) - cy;
var ix = (m.lon-map.center.lon)/map.dlonpx + (map.imgx/2) - cx;
var iy = (map.center.lat-m.lat)/map.dlatpx + (map.imgy/2) - cy;
//console.log(ix,iy);
var tx = 0|(ix/map.tilesize);
var ty = 0|(iy/map.tilesize);
@ -61,6 +61,7 @@ exports.latLonToXY = function(lat, lon) {
/// Given an amount to scroll in pixels on the screen, adjust the lat/lon of the map to match
exports.scroll = function(x,y) {
this.lon += x * this.map.dlonpx;
this.lat -= y * this.map.dlatpx;
this.lon -= x * this.map.dlonpx;
this.lat += y * this.map.dlatpx;
// console.log(this.lon, this.lat);
};