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37 lines
1.2 KiB
Markdown
37 lines
1.2 KiB
Markdown
# bezier_surface
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Given a set of control points, the `bezier_surface` function returns points of the Bézier surface. Combined with the `function_grapher` module defined in my library, you can create a Bézier surface.
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It depends on the `bezier_curve` function so remember to include bezier_curve.scad.
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## Parameters
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- `t_step` : The distance between two points of the Bézier path.
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- `points` : A set of control points. See examples below.
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## Examples
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If you have 16 control points and combine with the `function_grapher` module:
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include <bezier_curve.scad>;
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include <bezier_surface.scad>;
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include <function_grapher.scad>;
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t_step = 0.05;
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thickness = 0.5;
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ctrl_pts = [
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[[0, 0, 20], [60, 0, -35], [90, 0, 60], [200, 0, 5]],
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[[0, 50, 30], [100, 60, -25], [120, 50, 120], [200, 50, 5]],
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[[0, 100, 0], [60, 120, 35], [90, 100, 60], [200, 100, 45]],
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[[0, 150, 0], [60, 150, -35], [90, 180, 60], [200, 150, 45]]
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];
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g = bezier_surface(t_step, ctrl_pts);
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function_grapher(g, thickness);
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The following figure shows controll points and bazier curves around the surface.
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