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Draw a pixel: Difference between revisions
→{{header|Go}}
(Added X86 Assembly example, showing how to do it in 32 bytes of executable code.) |
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Line 744:
The color of the pixel at (100, 100) is red.
</pre>
::<lang go>package main
import (
"image"
"image/color"
"image/draw"
"image/png"
"os"
)
func main() {
// Create an 320 x 240 image
img := image.NewRGBA(image.Rect(0, 0, 320, 240))
// fill img in white
draw.Draw(img, img.Bounds(), &image.Uniform{color.RGBA{0, 0, 0, 0}}, image.ZP, draw.Src)
// Draw a red dot at (100, 100)
img.Set(100, 100, color.RGBA{255, 0, 0, 255})
// Save to new.png
w, _ := os.OpenFile("new.png", os.O_WRONLY|os.O_CREATE, 0600)
defer w.Close()
png.Encode(w, img)
}
</lang>
=={{header|IS-BASIC}}==
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