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Plasma effect: Difference between revisions
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(demo/plasma)</lang>
=={{header|Gosu}}==
<lang gosu>
uses javax.swing.*
uses java.awt.*
uses java.awt.image.*
uses java.awt.event.ActionEvent
uses java.awt.image.BufferedImage#*
uses java.lang.Math#*
var size = 400
EventQueue.invokeLater(\ -> showPlasma())
function showPlasma() {
var frame = new JFrame("Plasma") {:Resizable = false, :DefaultCloseOperation = JFrame.EXIT_ON_CLOSE}
frame.add(new Plasma(), BorderLayout.CENTER)
frame.pack()
frame.setLocationRelativeTo(null)
frame.Visible = true
}
class Plasma extends JPanel {
var hueShift: float
property get plasma: float[][] = createPlasma(size, size)
property get img: BufferedImage = new BufferedImage(size, size, TYPE_INT_RGB)
construct() {
PreferredSize = new Dimension(size, size)
new Timer(50, \ e -> {hueShift+=0.02 repaint()}).start()
}
private function createPlasma(w: int, h: int): float[][] {
var buffer = new float[h][w]
for(y in 0..|h)
for(x in 0..|w) {
var value = (sin(x / 16) + sin(y / 8) + sin((x + y) / 16) + sin(sqrt(x * x + y * y) / 8) + 4) / 8
buffer[y][x] = value as float
}
return buffer
}
override function paintComponent(g: Graphics) {
for(y in 0..|plasma.length)
for(x in 0..|plasma[0].length)
img.setRGB(x, y, Color.HSBtoRGB(hueShift + plasma[y][x], 1, 1))
g.drawImage(img, 0, 0, null)
}
}
</lang>
<lang python>
=={{header|J}}==
[[File:J-viewmat-plasma.png|200px|thumb|right]]
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