92 lines
3.9 KiB
Kotlin
92 lines
3.9 KiB
Kotlin
import org.openrndr.application
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import org.openrndr.color.ColorRGBa
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import org.openrndr.draw.isolated
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import org.openrndr.extensions.SingleScreenshot
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import org.openrndr.extra.shadestyles.*
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import org.openrndr.math.Polar
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import org.openrndr.shape.Rectangle
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/**
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* Example of 5 gradient styles.
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* NPointLinear and NPoingGradient have separate demos.
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*/
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fun main() {
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application {
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configure {
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width = 1000
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height = 500
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}
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program {
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if (System.getProperty("takeScreenshot") == "true") {
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extend(SingleScreenshot()) {
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this.outputFile = System.getProperty("screenshotPath")
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}
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}
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// Create gradients with initial colors
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val gradients = listOf(
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RadialGradient(ColorRGBa.PINK, ColorRGBa.WHITE),
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AngularGradient(ColorRGBa.PINK, ColorRGBa.WHITE),
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NPointGradient(Array(4) {
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ColorRGBa.PINK.shade(it / 3.0)
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}),
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LinearGradient(ColorRGBa.PINK, ColorRGBa.WHITE),
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HalfAngularGradient(ColorRGBa.PINK, ColorRGBa.WHITE)
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)
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extend {
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gradients.forEachIndexed { gradientId, gradient ->
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for (column in 0 until 10) {
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val color1 = ColorRGBa.PINK.toHSVa().shiftHue(column * 12.0)
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.shade(0.5).toRGBa()
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val w = width.toDouble() / 10.0
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val h = height.toDouble() / gradients.size
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val rect = Rectangle(column * w, gradientId * h, w, h)
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val offset = Polar((seconds + column) * 15.0, 0.3).cartesian
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drawer.isolated {
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when (gradient) {
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is RadialGradient -> {
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gradient.color1 = color1
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gradient.exponent = column / 3.0 + 0.3
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gradient.length = 0.6
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gradient.offset = offset
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}
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is AngularGradient -> {
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gradient.color1 = color1
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gradient.exponent = column / 3.0 + 0.3
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gradient.rotation = (seconds - column) * 10.0
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gradient.offset = offset
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}
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is LinearGradient -> {
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gradient.color1 = color1
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gradient.exponent = column / 3.0 + 0.3
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gradient.rotation = seconds * 10.0
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}
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is HalfAngularGradient -> {
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gradient.color1 = color1
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gradient.exponent = column / 3.0 + 0.3
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gradient.rotation = (column - seconds) * 10.0
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gradient.offset = offset
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}
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is NPointGradient -> {
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// Animate points.
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// We could also animate colors.
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gradient.points = Array(gradient.colors.size) {
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rect.center + Polar(it * 90.0 +
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column * 36 - seconds * 10,
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40.0).cartesian
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}
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}
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}
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shadeStyle = gradient
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rectangle(rect)
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}
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}
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}
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}
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}
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}
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} |