I'm getting this error when building the project

$ gradle
--------
FAILURE: Build failed with an exception.

* Where:
Build file '/Users/chris/Development/buffer/kubed/kubed-contour/build.gradle' line: 15

* What went wrong:
A problem occurred evaluating project ':kubed-contour'.
> Could not find method sourcesJar() for arguments [build_b808absl75l1m7uhb220r46ft$_run_closure1$_closure6$_closure7$_closure8@b8b1f9d] on object of type org.gradle.api.publish.maven.internal.publication.DefaultMavenPublication.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

For example: (Double) -> Double could be either interpolator or deinterpolator. There is no way to quickly tell, other than carefully following the code.

Same for: fun deinterpolateClamp(deinterpolate: (Double, Double) -> (Double) -> Double): (Double, Double) -> (Double) -> Double { - doesn't show intent very well.

With the help of some typealiases, we can type less, but more importantly, clearly show the intent. For example:

// The names for aliases themselves can be different.
// Perhaps, you can make them more concise while remaining descriptive.
typealias Interpolator<T> = (Double) -> T
typealias Deinterpolator<T> = (T) -> Double

typealias InterpolatorFactory<T> = (T, T) -> Interpolator<T>
typealias DeinterpolatorFactory<T> = (T, T) -> Deinterpolator<T>

typealias PiecewiseInterpolatorFactory<T> = (List<Double>, List<T>, DeinterpolatorFactory<Double>, InterpolatorFactory<T>) -> Interpolator<T>
typealias PiecewiseDeinterpolatorFactory<T> = (List<T>, List<Double>, DeinterpolatorFactory<T>, InterpolatorFactory<Double>) -> Deinterpolator<T>

Then

fun deinterpolateClamp(deinterpolate: (Double, Double) -> (Double) -> Double): (Double, Double) -> (Double) -> Double {

can become

/**
 * Converts the given deinterpolator factory to a clamping one:
 * t returned by factory produced deinterpolators is guaranteed to be in [0, 1].
 */
protected fun clampDeinterpolatorFactory(deinterpolatorOf: DeinterpolatorFactory<Double>): DeinterpolatorFactory<Double>

Hello, I find the project interesting. I don't have Kotlin experience. I did git pull and tried to open the project in Intelij, it was complaining that JavaFx is missing. I added in kubed-demos build.gradle this: compile "org.openjfx:javafx-base:13:win" // ALL THIS ARE JAVAFX LIBRARIES compile "org.openjfx:javafx-graphics:13:win" compile "org.openjfx:javafx-controls:13:win" compile "org.openjfx:javafx-web:13:win" compile "org.openjfx:javafx-swing:13:win" compile "org.openjfx:javafx-media:13:win" compile 'no.tornado:tornadofx:1.7.15'

But then still the error in the image are shown. What i did wrong ?

fun main(args: Array<String>) {
    val scale = scaleLinear<Double>().domain(-100.0, 100.0).range(0.0, 100.0)
    println(scale(0.0))
    println(scale.invert(50.0)) // is this really supposed to throw?
}

Mercator:reclip is not setting the clipExtent correctly when no clipExtent has been provided.

For example the following produces a clipExtent of [-480.5, -480.5, 961.0, 961.0]:

val projection = mercator {
    scale = (width - 3) / (2 * PI)
    translateX = width / 2
    translateY = height / 2
    precision = 0.1
}

Hi,

I'm looking at this now and I'm quite impressed, nice work there! But one thing that concerned me when profiling the CirclesDemo is how much time is spent null checking and getting the datum:

In this example 38% of all CPU time is spent in these two methods.

Property lookup in a HashMap is bound to be slow:

internal const val DATA_PROPERTY: String = "__data__"

/**
 * The datum associated with this Node, or Selection.UNDEFINED if there is none.
 */
var Node.datum: Any?
    get() = properties[DATA_PROPERTY]
    set(value) { properties[DATA_PROPERTY] = value }

I don't have any good ideas as to how this can be improved yet, just observations.

Currently, the kubed-demos project contains a number of demonstrations but they require that they be compiled and then run individually.

Kubed should provide a demo application that can be downloaded and launched, similar to the ControlsFX sampler application.