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allow different size

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Justin Lin
2019-08-23 08:40:18 +08:00
parent 9ec796696c
commit 38717abd1a
1 changed files with 17 additions and 14 deletions
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31
src/pixel/bitmap.scad
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@@ -1,25 +1,28 @@
function _bitmap_row(r_count, row_bits, dimension, range, center, invert) =
function _bitmap_row(r_count, row_bits, width, height, center, invert) =
let(
half_d = dimension / 2,
offset_p = center ? 0 : half_d,
half_w = width / 2,
half_h = height / 2,
offset_x = center ? 0 : half_w,
offset_y = center ? 0 : half_h,
bit = invert ? 0 : 1
)
[for(i = range) if(row_bits[i] == bit) [i - half_d + offset_p, r_count + offset_p]];
[for(i = 0; i < width; i = i + 1) if(row_bits[i] == bit) [i - half_w + offset_x, r_count + offset_y]];
function bitmap(raw_data, center = false, invert = false) =
function bitmap(raw_data, size, center = false, invert = false) =
let(
dimension = sqrt(len(raw_data)),
to = dimension - 1,
range = [0:to],
squar = sqrt(len(raw_data)),
siz = is_undef(size) ? [squar, squar] : size,
width = siz[0],
height = siz[1],
rows = [
for(row = to; row > -1; row = row - 1)
[for(column = range)
raw_data[row * dimension + column]]
for(row = height - 1; row > -1; row = row - 1)
[for(column = 0; column < width; column = column + 1)
raw_data[row * width + column]]
],
offset_i = dimension / 2
offset_i = height / 2
)
[
for(i = range)
let(row = _bitmap_row(i - offset_i, rows[i], dimension, range, center, invert))
for(i = 0; i < width; i = i + 1)
let(row = _bitmap_row(i - offset_i, rows[i], width, height, center, invert))
if(row != []) each row
];