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tweaks for offscreen GPS

master
Gordon Williams 2025-06-03 17:00:07 +01:00
parent 316f59c5fe
commit c01e40d960
1 changed files with 5 additions and 5 deletions
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10
apps/openstmap/app.js
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@ -118,7 +118,7 @@ function drawLocation() {
} }
var p = m.latLonToXY(fix.lat, fix.lon); var p = m.latLonToXY(fix.lat, fix.lon);
ovLoc.setBgColor(1).clear().setBgColor(0); ovLoc.setBgColor(1/*transparent*/).clear().setBgColor(0);
locOnscreen = isInside(R, p, ovSize, ovSize); locOnscreen = isInside(R, p, ovSize, ovSize);
if (locOnscreen) { // if we're onscreen, draw the course if (locOnscreen) { // if we're onscreen, draw the course
const angle = settings.dirSrc === 1 ? fix.course : Bangle.getCompass().heading; const angle = settings.dirSrc === 1 ? fix.course : Bangle.getCompass().heading;
@ -130,13 +130,13 @@ function drawLocation() {
} else { // if off-screen, draw a blue circle on the edge } else { // if off-screen, draw a blue circle on the edge
var mx = R.w/2, my = R.h/2; var mx = R.w/2, my = R.h/2;
var dy = p.y - (R.y+my), dx = p.x - mx; var dy = p.y - (R.y+my), dx = p.x - mx;
ovLoc.fillCircle(ovSize/2,ovSize/2,15); ovLoc.fillCircle(ovSize/2,ovSize/2,13);
if (Math.abs(dx)>Math.abs(dy)) { if (Math.abs(dx)>Math.abs(dy)) {
dy = mx * dy / Math.abs(dx); dy = my * dy / Math.abs(dx);
dx = mx * Math.sign(dx); dx = mx * Math.sign(dx);
} else { } else {
if (dy<0) ovLoc.clearRect(0,0,ovSize, (ovSize/2)-1); // so we don't overlap widgets! if (dy<0) ovLoc.setBgColor(1/*transparent*/).clearRect(0,0,ovSize, (ovSize/2)-1); // so we don't overlap widgets!
dx = my * dx / Math.abs(dy); dx = mx * dx / Math.abs(dy);
dy = my * Math.sign(dy); dy = my * Math.sign(dy);
} }
p.x = mx+dx; p.x = mx+dx;