c8f7dd52c6
- Adjust some demo window sizes. - Replace Random.double by Double.uniform - Tweak some demos so screenshots look more interesting
45 lines
1.6 KiB
Kotlin
45 lines
1.6 KiB
Kotlin
import org.openrndr.application
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import org.openrndr.color.ColorRGBa
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import org.openrndr.extra.noise.poissonDiskSampling
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import org.openrndr.extra.triangulation.delaunayTriangulation
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import org.openrndr.math.Vector2
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import org.openrndr.shape.Circle
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import org.openrndr.shape.Rectangle
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/**
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* This program generates a Voronoi diagram within a defined circular area and visualizes it.
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*
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* The program performs the following:
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* - Defines a circular area and a rectangular bounding frame within the canvas.
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* - Uses Poisson Disk Sampling to generate points within the circular area.
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* - Computes the Delaunay triangulation for the generated points, including equidistant points on the circle boundary.
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* - Derives the Voronoi diagram using the Delaunay triangulation and the bounding frame.
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* - Extracts the cell polygons of the Voronoi diagram.
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* - Renders the Voronoi cell polygons on the canvas, with a pink stroke on a black background.
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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 circle = Circle(Vector2(400.0), 250.0)
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val frame = drawer.bounds.offsetEdges(-50.0)
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val points = poissonDiskSampling(drawer.bounds, 30.0)
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.filter { circle.contains(it) }
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val delaunay = (points + circle.contour.equidistantPositions(40)).delaunayTriangulation()
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val voronoi = delaunay.voronoiDiagram(frame)
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val cells = voronoi.cellPolygons()
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extend {
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drawer.clear(ColorRGBa.BLACK)
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drawer.fill = null
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drawer.stroke = ColorRGBa.PINK
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drawer.contours(cells)
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}
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}
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}
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