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Revision as of 16:06, 8 October 2020

834 bytes removed ,  3 years ago
m
→‎{{header|Nim}}
(Update to work with version 1.2.x.)
Line 2,751:
=={{header|Nim}}==
<lang nim>
 
import unsigned
 
type
Luminance = uint8
Index = int
 
Pixel = tuple
r, g, b: Luminance
 
Image = object
w, h: Index
pixels: seq[Pixel]
 
Point = tuple
x, y: Index
 
proc px(r, g, b): Pixel =
result.r = r.uint8
result.g = g.uint8
result.b = b.uint8
 
proc img(w, h: int): Image =
result.w = w
result.h = h
result.pixels.newSeq(w * h)
 
const
Black = px( 0, 0, 0)
White = px(255, 255, 255)
 
iterator indices(img: Image): tuple[x, y: int] =
for x in 0 .. < img.w:
for y in 0 .. < img.h:
yield (x,y)
 
proc `[]`(img: Image, x, y: int): Pixel =
img.pixels[y * img.w + x]
 
proc `[]=`(img: var Image, x, y: int, c: Pixel) =
img.pixels[y * img.w + x] = c
 
proc fill(img: var Image, color: Pixel) =
for x,y in img.indices:
img[x,y] = color
 
proc print(img: Image) =
using stdouttype
Luminance* = uint8
Index* = int
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