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Code Releases Wiki Activity

flip and scale GPX canvas

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This commit is contained in:
vanous 2021-02-13 18:10:30 +01:00
parent c20ec171aa
commit 99830f5a84
1 changed files with 12 additions and 1 deletions
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13
app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/ActivitySummariesGpsFragment.java
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@ -95,6 +95,7 @@ public class ActivitySummariesGpsFragment extends AbstractGBFragment {
}
}).start();
}
private void drawTrack(Canvas canvas, List<GPSCoordinate> trackPoints) {
double maxLat = (Collections.max(trackPoints, new GPSCoordinate.compareLatitude())).getLatitude();
double minLat = (Collections.min(trackPoints, new GPSCoordinate.compareLatitude())).getLatitude();
@ -102,6 +103,15 @@ public class ActivitySummariesGpsFragment extends AbstractGBFragment {
double minLon = (Collections.min(trackPoints, new GPSCoordinate.compareLongitude())).getLongitude();
double maxAlt = (Collections.max(trackPoints, new GPSCoordinate.compareElevation())).getAltitude();
double minAlt = (Collections.min(trackPoints, new GPSCoordinate.compareElevation())).getAltitude();
float scale_factor_w = (float) ((maxLat - minLat) / (maxLon - minLon));
float scale_factor_h = (float) ((maxLon - minLon) / (maxLat - minLat));
if (scale_factor_h > scale_factor_w) { //scaling to draw proportionally
scale_factor_h = 1;
} else {
scale_factor_w = 1;
}
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setStrokeWidth(1);
@ -112,7 +122,7 @@ public class ActivitySummariesGpsFragment extends AbstractGBFragment {
float lon = (float) ((p.getLongitude() - minLon) / (maxLon - minLon));
float alt = (float) ((p.getAltitude() - minAlt) / (maxAlt - minAlt));
paint.setStrokeWidth(1 + alt); //make thicker with higher altitude, we could do more here
canvas.drawPoint(CANVAS_SIZE * lat, CANVAS_SIZE * lon, paint);
canvas.drawPoint(CANVAS_SIZE * lat * scale_factor_w, CANVAS_SIZE * lon * scale_factor_h, paint);
}
}
@ -130,6 +140,7 @@ public class ActivitySummariesGpsFragment extends AbstractGBFragment {
canvas.drawRect(0,0,360,360,paint);
*/
imageView.setImageBitmap(bitmap);
imageView.setScaleY(-1f); //flip the canvas
return canvas;
}