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17 lines
745 B
Markdown
17 lines
745 B
Markdown
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# Béziers for Beginners
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Bézier curves are parametric curves defined by a set of control points. These points’ positions in relation to one another define the shape of the curve. In OpenSCAD these points are contained in a list. The simplest cubic Bézier curve has 4 control points. The first and last control points are the endpoints of the curve, but the other two control points do not lie on the curve itself.
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To work with Béziers in OpenSCAD we need to load the Bézier extension BOSL2/beziers.scad in addition to BOSL2/std.scad.
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To visualize a Bézier curve we can use the module debug_bezier().
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```openscad2d
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include<BOSL2/std.scad>
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include<BOSL2/beziers.scad>
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bez = [[20,0], [40,10], [0,40], [20,60]];
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debug_bezier(bez);
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```
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