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Getting close :)

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PWRxPSYCHO 2022-10-05 22:56:27 -04:00
parent 38b6fe04ef
commit 6bb2a59977
4 changed files with 158 additions and 281 deletions
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42
app/src/main/java/com/geeksville/mesh/model/map/CirclePlottingOverlay.kt
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package com.geeksville.mesh.model.map
import android.util.Log
import android.view.MotionEvent
import org.osmdroid.api.IMapView
import org.osmdroid.config.Configuration
import org.osmdroid.util.GeoPoint
import org.osmdroid.views.MapView
import org.osmdroid.views.overlay.Overlay
import org.osmdroid.views.overlay.Polygon
class CirclePlottingOverlay(var distanceKm: Int) : Overlay() {
override fun onLongPress(e: MotionEvent, mapView: MapView): Boolean {
if (Configuration.getInstance().isDebugMapView) {
Log.d(IMapView.LOGTAG, "CirclePlottingOverlay onLongPress")
}
val pt = mapView.projection.fromPixels(e.x.toInt(), e.y.toInt(), null) as GeoPoint
/*
* <b>Note</b></b: when plotting a point off the map, the conversion from
* screen coordinates to map coordinates will return values that are invalid from a latitude,longitude
* perspective. Sometimes this is a wanted behavior and sometimes it isn't. We are leaving it up to you,
* the developer using osmdroid to decide on what is right for your application. See
* <a href="https://github.com/osmdroid/osmdroid/pull/722">https://github.com/osmdroid/osmdroid/pull/722</a>
* for more information and the discussion associated with this.
*/
//just in case the point is off the map, let's fix the coordinates
if (pt.longitude < -180) pt.longitude = pt.longitude + 360
if (pt.longitude > 180) pt.longitude = pt.longitude - 360
//latitude is a bit harder. see https://en.wikipedia.org/wiki/Mercator_projection
if (pt.latitude > 85.05112877980659) pt.latitude = 85.05112877980659
if (pt.latitude < -85.05112877980659) pt.latitude = -85.05112877980659
val circle: List<GeoPoint> = Polygon.pointsAsCircle(pt, distanceKm.toDouble())
val p = Polygon(mapView)
p.points = circle
p.title = "A circle"
mapView.overlayManager.add(p)
mapView.invalidate()
return true
}
}