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68 lines
1.7 KiB
Markdown
68 lines
1.7 KiB
Markdown
# sf_thicken
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It thickens a surface, described by a m * n list of `[x, y, z]`s.
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## Parameters
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- `points` : A m * n list of `[x, y, z]`s. See examples below.
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- `thickness` : The depth of the thickening.
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- `direction` : The direction of thickening. It accepts `"BOTH"` (default), `"FORWARD"` or `"BACKWARD"`. Thickening is applied in both directions from the surface, the direction of the surface normals or the opposite direction to the surface normals. It also accept a direction vector `[x, y, z]`. Thickening is only applied in the direction you give.
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## Examples
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use <surface/sf_thicken.scad>
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points = [
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[[0, 0, 1], [1, 0, 2.5], [2, 0, 2], [3, 0, 2.5]],
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[[0, 1, 1], [1, 1, 2], [2, 1, 1], [3, 1, 2]],
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[[0, 2, 1], [1, 2, 2.3], [2, 2, 2], [3, 2, 2.2]],
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[[0, 3, 1], [1, 3, 2], [2, 3, 1], [3, 3, 2]]
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];
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thickness = 0.25;
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sf_thicken(points, thickness);
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use <surface/sf_thicken.scad>
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function f(x, y) =
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let(leng = norm([x, y]))
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30 * (cos(leng) + cos(3 * leng));
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thickness = 3;
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min_value = -200;
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max_value = 200;
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resolution = 10;
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surface1 = [
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for(y = [min_value:resolution:max_value])
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[
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for(x = [min_value:resolution:max_value])
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[x, y, f(x, y) + 100]
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]
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];
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sf_thicken(surface1, thickness);
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use <surface/sf_thicken.scad>
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function f(x, y) = x + y;
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thickness = 20;
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min_value = -50;
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max_value = 50;
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resolution = 5;
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surface1 = [
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for(y = [min_value:resolution:max_value])
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[
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for(x = [min_value:resolution:max_value])
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[x, y, f(x, y) + 100]
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]
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];
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sf_thicken(surface1, thickness, direction = [1, 1, -1]);
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