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Julia

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rnentjes
2016-05-22 13:36:42 +02:00
parent e43b1ca806
commit 91947da6e2
2 changed files with 34 additions and 25 deletions
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45
src/Julia.kt
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@@ -40,22 +40,25 @@ private val fragmentShader = """
gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0);
for (int iteration = 0; iteration < 1000; iteration++) {
if (xx*xx + yy*yy > 4.0) {
float mu = u_iteratorOffset + float(iteration) + 1.0 - log(log(xx*xx + yy*yy)) / log(2.0);
if (xx*xx + yy*yy < 4.0) {
for (int iteration = 0; iteration < 1000; iteration++) {
if (xx*xx + yy*yy > 4.0) {
float mu = u_iteratorOffset + float(iteration) + 1.0 - log(log(xx*xx + yy*yy)) / log(2.0);
//mu = sqrt(mu);
float it = mod(mu * 7.0, 768.0);
float it = mod(mu * 23.0, 768.0);
float red = min(it, 255.0) / 255.0;
float green = max(0.0, min(it, 511.0) - 256.0) / 255.0;
float blue = max(0.0, min(it, 767.0) - 512.0) / 255.0;
float red = min(it, 255.0) / 255.0;
float green = max(0.0, min(it, 511.0) - 256.0) / 255.0;
float blue = max(0.0, min(it, 767.0) - 512.0) / 255.0;
gl_FragColor = vec4( red, green, blue, 1.0);
break;
gl_FragColor = vec4( blue, green, red, 1.0);
break;
}
xt = xx*xx - yy*yy + u_julia.x;
yy = 2.0*xx*yy + u_julia.y;
xx = xt;
}
xt = xx*xx - yy*yy + u_julia.x;
yy = 2.0*xx*yy + u_julia.y;
xx = xt;
}
}
"""
@@ -78,7 +81,7 @@ class Julia(val html: HTMLElements) {
val data: JuliaData = JuliaData()
val attribBuffer: WebGLBuffer
val vertices: Float32Array
val start = Date().getTime() - 20000
val start = Date().getTime()
init {
val array: Array<Float> = arrayOf(
@@ -116,13 +119,19 @@ class Julia(val html: HTMLElements) {
webgl.clearColor(1f, 1f, 1f, 1f)
webgl.clear(WebGLRenderingContext.COLOR_BUFFER_BIT)
var time = (start - (Date().getTime())) / 1000.0
var time = (start - (Date().getTime())) / 500.0
data.juliaX = -0.391f + (Math.sin(time / 31) / 10f).toFloat()
data.juliaY = -0.587f + (Math.cos(time / 23.07) / 10f).toFloat()
// data.juliaX = -0.391f + (Math.sin(time / 31) / 10f).toFloat()
// data.juliaY = -0.587f + (Math.cos(time / 23.07) / 10f).toFloat()
data.scaleX = 1.3f - Math.sin(time / 10.0).toFloat() * 0.9f
data.scaleY = 1.3f - Math.sin(time / 10.0).toFloat() * 0.9f
// data.juliaX = -0.79f + (Math.sin(time / 31) / 100f).toFloat()
// data.juliaY = 0.15f + (Math.cos(time / 23.07) / 100f).toFloat()
data.juliaX = 0.28f + (Math.sin(time / 31) / 100f).toFloat()
data.juliaY = 0.008f + (Math.cos(time / 23.07) / 100f).toFloat()
data.scaleX = 1.3f - Math.sin(time / 10.0).toFloat() * 0.5f
data.scaleY = 1.3f - Math.sin(time / 10.0).toFloat() * 0.5f
data.iteratorOffset = 0f //time.toFloat() * 10f