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use scad

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This commit is contained in:
Justin Lin
2020-01-26 20:31:20 +08:00
parent a49b27ecb1
commit be08328c32
2 changed files with 23 additions and 20 deletions
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21
src/pixel/_impl/_px_from_impl.scad Normal file
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@@ -0,0 +1,21 @@
function _px_from_row(r_count, row_bits, width, height, center, invert) =
let(
half_w = width / 2,
half_h = height / 2,
offset_x = center ? 0 : half_w,
offset_y = center ? -half_h : 0,
bit = invert ? 0 : 1
)
[for(i = 0; i < width; i = i + 1) if(row_bits[i] == bit) [i - half_w + offset_x, r_count + offset_y]];
function _px_from_impl(binaries, center, invert) =
let(
width = len(binaries[0]),
height = len(binaries),
offset_i = height / 2
)
[
for(i = height - 1; i > -1; i = i - 1)
let(row = _px_from_row(height - i - 1, binaries[i], width, height, center, invert))
if(row != []) each row
];

22
src/pixel/px_from.scad
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@@ -8,24 +8,6 @@
* *
**/ **/
function _px_from_row(r_count, row_bits, width, height, center, invert) = use <pixel/_impl/_px_from_impl.scad>;
let(
half_w = width / 2,
half_h = height / 2,
offset_x = center ? 0 : half_w,
offset_y = center ? -half_h : 0,
bit = invert ? 0 : 1
)
[for(i = 0; i < width; i = i + 1) if(row_bits[i] == bit) [i - half_w + offset_x, r_count + offset_y]];
function px_from(binaries, center = false, invert = false) = function px_from(binaries, center = false, invert = false) = _px_from_impl(binaries, center, invert);
let(
width = len(binaries[0]),
height = len(binaries),
offset_i = height / 2
)
[
for(i = height - 1; i > -1; i = i - 1)
let(row = _px_from_row(height - i - 1, binaries[i], width, height, center, invert))
if(row != []) each row
];