Raster bars: Difference between revisions
Added Wren
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(Small) Moving gif of swaying bars: [https://github.com/thundergnat/rc/blob/master/img/Raster-bars-swaying-Raku.gif (offsite .gif image)]
=={{header|Wren}}==
{{trans|Go}}
{{libheader|DOME}}
Unlike the Go example, repeats indefinitely until the window is closed.
As DOME has no facility to create an animated .gif file, the moving image is displayed but not saved.
<lang ecmascript>import "dome" for Window
import "graphics" for Canvas, Color
var c0 = Color.rgb(166, 124, 0, 255)
var c1 = Color.rgb(191, 155, 48, 255)
var c2 = Color.rgb(255, 191, 0, 255)
var c3 = Color.rgb(255, 207, 64, 255)
var c4 = Color.rgb(255, 220, 115, 255)
var Palette = [c0, c1, c2, c3, c4]
class RasterBars {
construct new(width, height) {
Window.resize(width, height)
Canvas.resize(width, height)
Window.title = "Raster bars"
_width = width
_height = height
}
init() {
_f = 0
_nframes = 320
_draw = false
_c = false
}
hline(x1, y, x2, ci) {
while (x1 <= x2) {
Canvas.pset(x1, y, Palette[ci])
x1 = x1 + 1
}
}
vline(x, y1, y2, ci) {
while (y1 <= y2) {
Canvas.pset(x, y1, Palette[ci])
y1 = y1 + 1
}
}
drawHBar(x1, y1, x2, y2, ci) {
while (y1 <= y2) {
hline(x1, y1, x2, ci)
y1 = y1 + 1
}
}
drawVBar(x1, y1, x2, y2, ci) {
while (x1 <= x2) {
vline(x1, y1, y2, ci)
x1 = x1 + 1
}
}
update() {
_f = _f + 1
if (_f % 8 == 0) {
_draw = true
_c = !_c
} else {
_draw = false
}
if (_f == _nframes) _f = 0
}
draw(alpha) {
if (!_draw) return
var c = _c ? 0 : 1
if (_f < _nframes / 2) {
var y = 0
while (y < _height) {
drawHBar(0, y, _width, y+19, c)
c = (c < 4) ? c + 1 : 0
y = y + 20
}
} else {
var x = 0
while (x < _width) {
drawVBar(x, 0, x+19, _height, c)
c = (c < 4) ? c + 1 : 0
x = x + 20
}
}
}
}
var Game = RasterBars.new(500, 500)</lang>
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