kscience/maps-kt
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Add explicit API for core

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Alexander Nozik 2022-07-23 10:40:36 +03:00
parent 14b3142f43
commit 09dfdcc84a
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4 changed files with 25 additions and 19 deletions
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7
maps-kt-core/build.gradle.kts
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@ -6,17 +6,18 @@ plugins {
val ktorVersion: String by rootProject.extra val ktorVersion: String by rootProject.extra
kotlin { kotlin {
explicitApi = org.jetbrains.kotlin.gradle.dsl.ExplicitApiMode.Warning
jvm { jvm {
compilations.all { compilations.all {
kotlinOptions.jvmTarget = "11" kotlinOptions.jvmTarget = "11"
} }
} }
js(IR){ js(IR) {
browser() browser()
} }
sourceSets { sourceSets {
commonMain{ commonMain {
dependencies{ dependencies {
api("io.github.microutils:kotlin-logging:2.1.23") api("io.github.microutils:kotlin-logging:2.1.23")
} }
} }

27
maps-kt-core/src/commonMain/kotlin/centre/sciprog/maps/GmcBox.kt
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@ -1,34 +1,39 @@
package centre.sciprog.maps package centre.sciprog.maps
import kotlin.math.* import kotlin.math.abs
import kotlin.math.max
import kotlin.math.min
class GmcBox(val a: GeodeticMapCoordinates, val b: GeodeticMapCoordinates) public class GmcBox(public val a: GeodeticMapCoordinates, public val b: GeodeticMapCoordinates)
fun GmcBox(latitudes: ClosedFloatingPointRange<Double>, longitudes: ClosedFloatingPointRange<Double>) = GmcBox( public fun GmcBox(
latitudes: ClosedFloatingPointRange<Double>,
longitudes: ClosedFloatingPointRange<Double>,
): GmcBox = GmcBox(
GeodeticMapCoordinates.ofRadians(latitudes.start, longitudes.start), GeodeticMapCoordinates.ofRadians(latitudes.start, longitudes.start),
GeodeticMapCoordinates.ofRadians(latitudes.endInclusive, longitudes.endInclusive) GeodeticMapCoordinates.ofRadians(latitudes.endInclusive, longitudes.endInclusive)
) )
val GmcBox.center public val GmcBox.center: GeodeticMapCoordinates
get() = GeodeticMapCoordinates.ofRadians( get() = GeodeticMapCoordinates.ofRadians(
(a.latitude + b.latitude) / 2, (a.latitude + b.latitude) / 2,
(a.longitude + b.longitude) / 2 (a.longitude + b.longitude) / 2
) )
val GmcBox.left get() = min(a.longitude, b.longitude) public val GmcBox.left: Double get() = min(a.longitude, b.longitude)
val GmcBox.right get() = max(a.longitude, b.longitude) public val GmcBox.right: Double get() = max(a.longitude, b.longitude)
val GmcBox.top get() = max(a.latitude, b.latitude) public val GmcBox.top: Double get() = max(a.latitude, b.latitude)
val GmcBox.bottom get() = min(a.latitude, b.latitude) public val GmcBox.bottom: Double get() = min(a.latitude, b.latitude)
//TODO take curvature into account //TODO take curvature into account
val GmcBox.width get() = abs(a.longitude - b.longitude) public val GmcBox.width: Double get() = abs(a.longitude - b.longitude)
val GmcBox.height get() = abs(a.latitude - b.latitude) public val GmcBox.height: Double get() = abs(a.latitude - b.latitude)
/** /**
* Compute a minimal bounding box including all given boxes. Return null if collection is empty * Compute a minimal bounding box including all given boxes. Return null if collection is empty
*/ */
fun Collection<GmcBox>.wrapAll(): GmcBox? { public fun Collection<GmcBox>.wrapAll(): GmcBox? {
if (isEmpty()) return null if (isEmpty()) return null
//TODO optimize computation //TODO optimize computation
val minLat = minOf { it.bottom } val minLat = minOf { it.bottom }

8
maps-kt-core/src/commonMain/kotlin/centre/sciprog/maps/MapViewPoint.kt
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@ -5,14 +5,14 @@ import kotlin.math.pow
/** /**
* Observable position on the map. Includes observation coordinate and [zoom] factor * Observable position on the map. Includes observation coordinate and [zoom] factor
*/ */
data class MapViewPoint( public data class MapViewPoint(
val focus: GeodeticMapCoordinates, val focus: GeodeticMapCoordinates,
val zoom: Double, val zoom: Double,
) { ) {
val scaleFactor by lazy { WebMercatorProjection.scaleFactor(zoom) } val scaleFactor: Double by lazy { WebMercatorProjection.scaleFactor(zoom) }
} }
fun MapViewPoint.move(delta: GeodeticMapCoordinates): MapViewPoint { public fun MapViewPoint.move(delta: GeodeticMapCoordinates): MapViewPoint {
val newCoordinates = GeodeticMapCoordinates.ofRadians( val newCoordinates = GeodeticMapCoordinates.ofRadians(
(focus.latitude + delta.latitude).coerceIn( (focus.latitude + delta.latitude).coerceIn(
-MercatorProjection.MAXIMUM_LATITUDE, -MercatorProjection.MAXIMUM_LATITUDE,
@ -23,7 +23,7 @@ fun MapViewPoint.move(delta: GeodeticMapCoordinates): MapViewPoint {
return MapViewPoint(newCoordinates, zoom) return MapViewPoint(newCoordinates, zoom)
} }
fun MapViewPoint.zoom( public fun MapViewPoint.zoom(
zoomDelta: Double, zoomDelta: Double,
invariant: GeodeticMapCoordinates = focus, invariant: GeodeticMapCoordinates = focus,
): MapViewPoint = if (invariant == focus) { ): MapViewPoint = if (invariant == focus) {

2
maps-kt-core/src/commonMain/kotlin/centre/sciprog/maps/WebMercatorProjection.kt
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@ -14,7 +14,7 @@ public object WebMercatorProjection {
/** /**
* Compute radians to projection coordinates ratio for given [zoom] factor * Compute radians to projection coordinates ratio for given [zoom] factor
*/ */
public fun scaleFactor(zoom: Double) = 256.0 / 2 / PI * 2.0.pow(zoom) public fun scaleFactor(zoom: Double): Double = 256.0 / 2 / PI * 2.0.pow(zoom)
public fun toGeodetic(mercator: WebMercatorCoordinates): GeodeticMapCoordinates { public fun toGeodetic(mercator: WebMercatorCoordinates): GeodeticMapCoordinates {
val scaleFactor = scaleFactor(mercator.zoom.toDouble()) val scaleFactor = scaleFactor(mercator.zoom.toDouble())