Node / meshtastic / Meshtastic-Android / files / androidApp / src / fdroid / kotlin / org / meshtastic / app / map / MapUtils.kt

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T8b949e/*

* Copyright (c) 2026 Meshtastic LLC

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program. If not, see <https://www.gnu.org/licenses/>.

*/

Tff7b72package T7ee787org.meshtastic.app.map

Tff7b72import T7ee787android.content.Context

Tff7b72import T7ee787android.util.TypedValue

Tff7b72import T7ee787org.osmdroid.util.BoundingBox

Tff7b72import T7ee787org.osmdroid.util.GeoPoint

Tff7b72import T7ee787kotlin.math.log2

Tff7b72import T7ee787kotlin.math.pow

Tff7b72private Tff7b72const Tff7b72val Te6edf3DEGREES_IN_CIRCLE Tff7b72= T79c0ff3T79c0ff6T79c0ff0.0

Tff7b72private Tff7b72const Tff7b72val Te6edf3METERS_PER_DEGREE_LATITUDE Tff7b72= T79c0ff1T79c0ff1T79c0ff1T79c0ff3T79c0ff2T79c0ff0.0

Tff7b72private Tff7b72const Tff7b72val Te6edf3ZOOM_ADJUSTMENT_FACTOR Tff7b72= T79c0ff0.8

T8b949e/**

* Calculates the zoom level required to fit the entire [BoundingBox] inside the map view.

*

* @return The zoom level as a Double value.

*/

Tff7b72fun Te6edf3BoundingBoxTb4b4b4.Td2a8ffrequiredZoomLevelTb4b4b4(Tb4b4b4)Tb4b4b4: Tffa657Double Tb4b4b4{

Tff7b72val Te6edf3topLeft Tff7b72= Te6edf3GeoPointTb4b4b4(Tff7b72thisTb4b4b4.Te6edf3latNorthTb4b4b4, Tff7b72thisTb4b4b4.Te6edf3lonWestTb4b4b4)

Tff7b72val Te6edf3bottomRight Tff7b72= Te6edf3GeoPointTb4b4b4(Tff7b72thisTb4b4b4.Te6edf3latSouthTb4b4b4, Tff7b72thisTb4b4b4.Te6edf3lonEastTb4b4b4)

Tff7b72val Te6edf3latLonWidth Tff7b72= Te6edf3topLeftTb4b4b4.Te6edf3distanceToAsDoubleTb4b4b4(Te6edf3GeoPointTb4b4b4(Te6edf3topLeftTb4b4b4.Te6edf3latitudeTb4b4b4, Te6edf3bottomRightTb4b4b4.Te6edf3longitudeTb4b4b4)Tb4b4b4)

Tff7b72val Te6edf3latLonHeight Tff7b72= Te6edf3topLeftTb4b4b4.Te6edf3distanceToAsDoubleTb4b4b4(Te6edf3GeoPointTb4b4b4(Te6edf3bottomRightTb4b4b4.Te6edf3latitudeTb4b4b4, Te6edf3topLeftTb4b4b4.Te6edf3longitudeTb4b4b4)Tb4b4b4)

Tff7b72val Te6edf3requiredLatZoom Tff7b72= Te6edf3log2Tb4b4b4(Te6edf3DEGREES_IN_CIRCLE Tff7b72/ Tb4b4b4(Te6edf3latLonHeight Tff7b72/ Te6edf3METERS_PER_DEGREE_LATITUDETb4b4b4)Tb4b4b4)

Tff7b72val Te6edf3requiredLonZoom Tff7b72= Te6edf3log2Tb4b4b4(Te6edf3DEGREES_IN_CIRCLE Tff7b72/ Tb4b4b4(Te6edf3latLonWidth Tff7b72/ Te6edf3METERS_PER_DEGREE_LATITUDETb4b4b4)Tb4b4b4)

Tff7b72return Te6edf3maxOfTb4b4b4(Te6edf3requiredLatZoomTb4b4b4, Te6edf3requiredLonZoomTb4b4b4) Tff7b72* Te6edf3ZOOM_ADJUSTMENT_FACTOR

Tb4b4b4}

T8b949e/**

* Creates a new bounding box with adjusted dimensions based on the provided [zoomFactor].

*

* @return A new [BoundingBox] with added [zoomFactor]. Example:

* ```

* // Setting the zoom level directly using setZoom()

* map.setZoom(14.0)

* val boundingBoxZoom14 = map.boundingBox

*

* // Using zoomIn() results the equivalent BoundingBox with setZoom(15.0)

* val boundingBoxZoom15 = boundingBoxZoom14.zoomIn(1.0)

* ```

*/

Tff7b72fun Te6edf3BoundingBoxTb4b4b4.Td2a8ffzoomInTb4b4b4(Te6edf3zoomFactorTb4b4b4: Tffa657DoubleTb4b4b4)Tb4b4b4: Te6edf3BoundingBox Tb4b4b4{

Tff7b72val Te6edf3center Tff7b72= Te6edf3GeoPointTb4b4b4(Tb4b4b4(Te6edf3latNorth Tff7b72+ Te6edf3latSouthTb4b4b4) Tff7b72/ T79c0ff2Tb4b4b4, Tb4b4b4(Te6edf3lonWest Tff7b72+ Te6edf3lonEastTb4b4b4) Tff7b72/ T79c0ff2Tb4b4b4)

Tff7b72val Te6edf3latDiff Tff7b72= Te6edf3latNorth Tff7b72- Te6edf3latSouth

Tff7b72val Te6edf3lonDiff Tff7b72= Te6edf3lonEast Tff7b72- Te6edf3lonWest

Tff7b72val Te6edf3newLatDiff Tff7b72= Te6edf3latDiff Tff7b72/ Tb4b4b4(T79c0ff2.0Tb4b4b4.Te6edf3powTb4b4b4(Te6edf3zoomFactorTb4b4b4)Tb4b4b4)

Tff7b72val Te6edf3newLonDiff Tff7b72= Te6edf3lonDiff Tff7b72/ Tb4b4b4(T79c0ff2.0Tb4b4b4.Te6edf3powTb4b4b4(Te6edf3zoomFactorTb4b4b4)Tb4b4b4)

Tff7b72return Te6edf3BoundingBoxTb4b4b4(

Te6edf3centerTb4b4b4.Te6edf3latitude Tff7b72+ Te6edf3newLatDiff Tff7b72/ T79c0ff2Tb4b4b4,

Te6edf3centerTb4b4b4.Te6edf3longitude Tff7b72+ Te6edf3newLonDiff Tff7b72/ T79c0ff2Tb4b4b4,

Te6edf3centerTb4b4b4.Te6edf3latitude Tff7b72- Te6edf3newLatDiff Tff7b72/ T79c0ff2Tb4b4b4,

Te6edf3centerTb4b4b4.Te6edf3longitude Tff7b72- Te6edf3newLonDiff Tff7b72/ T79c0ff2Tb4b4b4,

Tb4b4b4)

Tb4b4b4}

T8b949e// Converts SP to pixels.

Tff7b72fun Te6edf3ContextTb4b4b4.Td2a8ffspToPxTb4b4b4(Te6edf3spTb4b4b4: Tffa657FloatTb4b4b4)Tb4b4b4: Tffa657Int Tff7b72=

Te6edf3TypedValueTb4b4b4.Te6edf3applyDimensionTb4b4b4(Te6edf3TypedValueTb4b4b4.Te6edf3COMPLEX_UNIT_SPTb4b4b4, Te6edf3spTb4b4b4, Te6edf3resourcesTb4b4b4.Te6edf3displayMetricsTb4b4b4)Tb4b4b4.Te6edf3toIntTb4b4b4(Tb4b4b4)

T8b949e// Converts DP to pixels.

Tff7b72fun Te6edf3ContextTb4b4b4.Td2a8ffdpToPxTb4b4b4(Te6edf3dpTb4b4b4: Tffa657FloatTb4b4b4)Tb4b4b4: Tffa657Int Tff7b72=

Te6edf3TypedValueTb4b4b4.Te6edf3applyDimensionTb4b4b4(Te6edf3TypedValueTb4b4b4.Te6edf3COMPLEX_UNIT_DIPTb4b4b4, Te6edf3dpTb4b4b4, Te6edf3resourcesTb4b4b4.Te6edf3displayMetricsTb4b4b4)Tb4b4b4.Te6edf3toIntTb4b4b4(Tb4b4b4)