54 lines
1.6 KiB
Kotlin
54 lines
1.6 KiB
Kotlin
package glsl
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import org.openrndr.application
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import org.openrndr.color.rgb
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import org.openrndr.draw.colorBuffer
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import org.openrndr.extra.noise.filters.SimplexNoise3D
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import org.openrndr.extra.noise.uniform
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import org.openrndr.math.Vector3
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import org.openrndr.math.Vector4
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import kotlin.math.sin
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/**
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* A sine oscillator with randomized parameters
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*/
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class SinOsc {
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private val freq = Double.uniform(0.1, 2.0)
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private val phase = Double.uniform(0.0, 6.28)
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private val add = Double.uniform(0.0, 1.0)
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private val mul = Double.uniform(0.0, 1.0 - add)
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operator fun invoke() = sin(System.currentTimeMillis() * 0.0001 * freq + phase) * mul + add
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}
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/**
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* Render an animated Simplex3D texture using shaders.
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*
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* The uniforms in the shader are controlled by
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* randomized sine oscillators.
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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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val noise = SimplexNoise3D()
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val img = colorBuffer(width, height)
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val wav = List(21) { SinOsc() }
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extend {
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noise.seed = Vector3(wav[0](), wav[1](), wav[2]()) // = position
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noise.scale = Vector3(wav[3](), wav[4](), wav[5]())
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noise.lacunarity = Vector3(wav[6](), wav[7](), wav[8]())
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noise.gain = Vector4(wav[9](), wav[10](), wav[11](), wav[12]())
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noise.decay = Vector4(wav[13](), wav[14](), wav[15](), wav[16]())
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noise.octaves = 4
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noise.bias = Vector4(wav[17](), wav[18](), wav[19](), wav[20]())
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noise.apply(emptyArray(), img)
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drawer.clear(rgb(0.20, 0.18, 0.16))
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drawer.image(img)
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}
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}
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}
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