48 lines
1.5 KiB
Kotlin
48 lines
1.5 KiB
Kotlin
package adjust
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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.shapes.adjust.adjustContour
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import org.openrndr.shape.Circle
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import kotlin.math.cos
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/**
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* Demonstrates animated modifications to a circular contour using `adjustContour`.
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*
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* The application creates a circular contour and dynamically alters its edges
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* based on the current time in seconds. Each edge of the contour is selected
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* and transformed through a series of operations:
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*
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* - The currently active edge (based on time modulo 4) is replaced with a point at 0.5.
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* - All other edges are reshaped by reducing their length dynamically, with the reduction
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* calculated using a cosine function involving the current time in seconds.
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*
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* The resulting contour is then drawn with a red stroke color.
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*/
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fun main() = application {
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configure {
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width = 800
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height = 800
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}
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program {
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extend {
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var contour =
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Circle(drawer.bounds.center, 300.0).contour
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contour = adjustContour(contour) {
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selectEdges(0, 1, 2, 3)
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edges.forEachIndexed { index, it ->
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if (index == seconds.mod(4.0).toInt()) {
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it.replaceWith(0.5)
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} else {
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val v = cos(seconds) * 0.15 + 0.25
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it.sub(0.5 - v, 0.5 + v)
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}
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}
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}
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drawer.stroke = ColorRGBa.RED
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drawer.contour(contour)
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}
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}
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}
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