35 lines
1.2 KiB
Kotlin
35 lines
1.2 KiB
Kotlin
package ordering
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import org.openrndr.application
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import org.openrndr.color.ColorRGBa
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import org.openrndr.extra.noise.uniform
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import org.openrndr.extra.shapes.ordering.hilbertOrder
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import kotlin.random.Random
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/**
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* Demonstrates the use of the `hilbertOrder` method to sort 2D points in a list of random points.
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*
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* When drawing the sorted points as a line strip, this line crosses itself fewer times than if the
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* points were drawn in a random order (sometimes zero crossings, depending on the number and layout of the points).
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*
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* The Hilbert curve (also known as the Hilbert space-filling curve) is a continuous fractal
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* space-filling curve first described by the German mathematician David Hilbert in 1891
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* https://en.wikipedia.org/wiki/Hilbert_curve
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*
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*/
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fun main() = application {
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configure {
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width = 720
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height = 720
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}
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program {
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val points = drawer.bounds.offsetEdges(-20.0).uniform(40, Random(0))
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val sortedPoints = points.hilbertOrder(bits = 16, scale = 1.0)
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extend {
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drawer.clear(ColorRGBa.PINK)
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drawer.stroke = ColorRGBa.RED
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drawer.lineStrip(sortedPoints)
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}
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}
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}
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