c8f7dd52c6
- Adjust some demo window sizes. - Replace Random.double by Double.uniform - Tweak some demos so screenshots look more interesting
65 lines
1.7 KiB
Kotlin
65 lines
1.7 KiB
Kotlin
import org.openrndr.*
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import org.openrndr.color.ColorRGBa
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import org.openrndr.extra.viewbox.ViewBox
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import org.openrndr.extra.viewbox.viewBox
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import org.openrndr.math.Vector2
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import kotlin.math.cos
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/**
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* Demonstrates how to use two proxy programs and
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* toggle between them by clicking the mouse.
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*
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* programA draws a circle and can be moved by pressing the
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* arrow keys.
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*
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* programB draws a ring located at the current mouse
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* position.
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*
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* Note that programA keeps listening to the key events
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* even if programB is currently displayed.
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*/
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fun Program.programA() {
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var pos = drawer.bounds.center
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extend {
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drawer.fill = ColorRGBa.PINK
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drawer.circle(pos, cos(seconds) * 50.0 + 50.0)
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}
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keyboard.keyDown.listen {
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when (it.key) {
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KEY_ARROW_UP -> pos -= Vector2.UNIT_Y * 20.0
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KEY_ARROW_DOWN -> pos += Vector2.UNIT_Y * 20.0
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KEY_ARROW_LEFT -> pos -= Vector2.UNIT_X * 20.0
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KEY_ARROW_RIGHT -> pos += Vector2.UNIT_X * 20.0
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}
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}
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}
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fun Program.programB() {
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extend {
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drawer.fill = ColorRGBa.TRANSPARENT
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drawer.stroke = ColorRGBa.CYAN
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drawer.strokeWeight = 50.0
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drawer.circle(mouse.position, 200.0)
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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 = 360
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}
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program {
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val proxyBoxes = mutableListOf<ViewBox>()
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proxyBoxes.add(viewBox(drawer.bounds).apply { programA() })
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proxyBoxes.add(viewBox(drawer.bounds).apply { programB() })
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var currentBox = 1
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extend {
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proxyBoxes[currentBox].draw()
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}
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mouse.buttonDown.listen {
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currentBox = (currentBox + 1) % proxyBoxes.size
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}
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}
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}
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