c8f7dd52c6
- Adjust some demo window sizes. - Replace Random.double by Double.uniform - Tweak some demos so screenshots look more interesting
43 lines
1.5 KiB
Kotlin
43 lines
1.5 KiB
Kotlin
import org.openrndr.application
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import org.openrndr.extra.expressions.watchingExpression1
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import org.openrndr.extra.gui.GUI
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import org.openrndr.extra.gui.addTo
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import org.openrndr.extra.parameters.TextParameter
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/**
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* Improved version of DemoExpressionEvaluator01, it uses [watchingExpression1] to automatically convert an expression
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* string into a function with a parameter "t".
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*/
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fun main() = application {
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program {
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val gui = GUI()
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gui.compartmentsCollapsedByDefault = false
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// the constants used in our expressions
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val constants = mutableMapOf("width" to drawer.width.toDouble(), "height" to drawer.height.toDouble())
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val settings = object {
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@TextParameter("x expression", order = 10)
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var xExpression = "cos(t) * 50.0 + width / 2.0"
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@TextParameter("y expression", order = 20)
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var yExpression = "sin(t) * 50.0 + height / 2.0"
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@TextParameter("radius expression", order = 30)
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var radiusExpression = "cos(t) * 50.0 + 50.0"
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}.addTo(gui)
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val xFunction by watchingExpression1(settings::xExpression, "t", constants)
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val yFunction by watchingExpression1(settings::yExpression, "t", constants)
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val radiusFunction by watchingExpression1(settings::radiusExpression, "t", constants)
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extend(gui)
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extend {
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val x = xFunction(seconds)
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val y = yFunction(seconds)
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val radius = radiusFunction(seconds)
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drawer.circle(x, y, radius)
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}
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}
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}
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