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Arc direction as computed property

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This commit is contained in:
Erik Schouten 2022-07-17 15:48:08 +02:00
parent 86fce7ec68
commit 429eefa3f7
1 changed files with 19 additions and 16 deletions
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9
kmath-trajectory/src/commonMain/kotlin/space/kscience/kmath/trajectory/segments/Arc.kt
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@ -35,13 +35,16 @@ public data class Arc(
LEFT, RIGHT LEFT, RIGHT
} }
override val length: Double get() { override val length: Double
val angle: Double = theta(if (direction == Direction.LEFT) start.theta - end.theta else end.theta - start.theta) get() {
val angle: Double =
theta(if (direction == Direction.LEFT) start.theta - end.theta else end.theta - start.theta)
val proportion = angle / (2 * PI) val proportion = angle / (2 * PI)
return circle.circumference * proportion return circle.circumference * proportion
} }
internal val direction: Direction = if (start.y < circle.center.y) { internal val direction: Direction
get() = if (start.y < circle.center.y) {
if (start.theta > PI) Direction.RIGHT else Direction.LEFT if (start.theta > PI) Direction.RIGHT else Direction.LEFT
} else if (start.y > circle.center.y) { } else if (start.y > circle.center.y) {
if (start.theta < PI) Direction.RIGHT else Direction.LEFT if (start.theta < PI) Direction.RIGHT else Direction.LEFT