42 lines
1.3 KiB
Kotlin
42 lines
1.3 KiB
Kotlin
import org.openrndr.application
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import org.openrndr.color.ColorRGBa
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import org.openrndr.extra.noise.scatter
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import org.openrndr.math.Vector2
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import org.openrndr.shape.Ellipse
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import kotlin.math.cos
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import kotlin.random.Random
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/**
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* Demonstrates how to create an animated visualization of scattered points.
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*
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* The program creates an animated ellipse with increasing and decreasing height.
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* Then, scatters points inside it with a placementRadius of 20.0.
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*
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* The animation reveals that the scattering positions are somewhat stable between
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* animation frames.
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*
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* The ellipse's contour is revealed and hidden every other second.
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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 = 540
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}
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program {
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extend {
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val shape = Ellipse(Vector2(width / 2.0, height / 2.0), 200.0, 150.0 + cos(seconds) * 125.0).shape
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val points = shape.scatter(20.0, random = Random(0))
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drawer.clear(ColorRGBa.BLACK)
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drawer.stroke = null
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drawer.fill = ColorRGBa.PINK
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drawer.circles(points, 4.0)
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if (seconds.mod(2.0) < 1.0) {
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drawer.stroke = ColorRGBa.PINK
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drawer.fill = null
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drawer.shape(shape)
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}
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}
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}
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}
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