46 lines
1.2 KiB
Text
46 lines
1.2 KiB
Text
import "graphics" for Canvas, ImageData, Color
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import "dome" for Window, Process
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import "io" for FileSystem
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class Bitmap {
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construct new(name, width, height) {
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Window.title = name
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Window.resize(width, height)
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Canvas.resize(width, height)
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_bmp = ImageData.create(name, width, height)
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// create bitmap
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for (y in 0...height) {
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for (x in 0...width) {
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var c = Color.rgb(x % 256, y % 256, (x * y) % 256)
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pset(x, y, c)
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}
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}
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_w = width
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_h = height
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}
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init() {
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// write bitmap to a PPM file
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var ppm = "P6\n%(_w) %(_h)\n255\n"
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for (y in 0..._h) {
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for (x in 0..._w) {
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var c = pget(x, y)
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ppm = ppm + String.fromByte(c.r)
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ppm = ppm + String.fromByte(c.g)
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ppm = ppm + String.fromByte(c.b)
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}
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}
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FileSystem.save("output.ppm", ppm)
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Process.exit(0)
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}
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pset(x, y, col) { _bmp.pset(x, y, col) }
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pget(x, y) { _bmp.pget(x, y) }
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update() {}
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draw(alpha) {}
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}
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var Game = Bitmap.new("Bitmap - write to PPM file", 320, 320)
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