25 lines
546 B
Kotlin
25 lines
546 B
Kotlin
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package centre.sciprog.maps.compose
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import androidx.compose.ui.graphics.ImageBitmap
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import kotlin.math.floor
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data class TileId(
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val zoom: Int,
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val i: Int,
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val j: Int,
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)
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data class MapTile(
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val id: TileId,
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val image: ImageBitmap,
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)
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interface MapTileProvider {
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suspend fun loadTile(id: TileId): MapTile
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fun toIndex(d: Double): Int = floor(d / DEFAULT_TILE_SIZE).toInt()
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fun toCoordinate(i: Int): Double = (i * DEFAULT_TILE_SIZE).toDouble()
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companion object{
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const val DEFAULT_TILE_SIZE = 256
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}
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}
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