commonMain.jetbrains.datalore.base.spatial.projections.AzimuthalEquidistantProjection.kt Maven / Gradle / Ivy

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/*
 * Copyright (c) 2022. JetBrains s.r.o.
 * Use of this source code is governed by the MIT license that can be found in the LICENSE file.
 */

package jetbrains.datalore.base.spatial.projections

import kotlin.math.acos
import kotlin.math.sin

internal class AzimuthalEquidistantProjection : AzimuthalBaseProjection() {
    override fun scale(cxcy: Double): Double = acos(cxcy).let { if (it == 0.0) 0.0 else it / sin(it) }
    override fun angle(z: Double): Double = z
}