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39 lines
887 B
OpenSCAD
39 lines
887 B
OpenSCAD
use <noise/nz_cell.scad>;
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use <golden_spiral.scad>;
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use <surface/sf_thicken.scad>;
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use <ptf/ptf_rotate.scad>;
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size = [150, 150];
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thickness = 5;
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height_factor = 0.7;
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pixel_step = 0.75;
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spirals = 1;
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spiral_from = 5;
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spiral_to = 10;
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spiral_pt_dist = 10;
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half_size = size / 2;
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half_pixel_step = pixel_step / 2;
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pts_angles = golden_spiral(
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from = spiral_from,
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to = spiral_pt_dist,
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point_distance = spiral_pt_dist
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);
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a_step = 360 / spirals;
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cells = [
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for(i = [0:spirals - 1])
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for(pt_angle = pts_angles)
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ptf_rotate(pt_angle[0], i * a_step)
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];
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noised = [
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for(y = [-half_size[1]:pixel_step:half_size[1]])
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[
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for(x = [-half_size[0]:pixel_step:half_size[0]])
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let(n = nz_cell(cells, [x, y] * height_factor) )
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[x, y, n < half_pixel_step ? half_pixel_step : n]
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]
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];
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sf_thicken(noised, thickness); |