shape_trapezium


Returns shape points of an isosceles trapezoid. They can be used with xxx_extrude modules of dotSCAD. The shape points can be also used with the built-in polygon module.

Parameters

  • length : The base length of an isosceles trapezium. It also accepts a vector [a, b]. a is the bottom base and b is the top base.
  • h : The height of the isosceles trapezium.
  • corner_r : The circle radius which fits the edges of the bottom and the top.
  • $fa, $fs, $fn : Used to control the corner fragments. Check the circle module for more details.

Examples

include <shape_trapezium.scad>;

polygon(
    shape_trapezium([40, 20], 
    h = 20,
    corner_r = 2)
);

shape_trapezium

include <shape_trapezium.scad>;
include <rotate_p.scad>;
include <polysections.scad>;
include <path_extrude.scad>;
include <bezier_curve.scad>;

t_step = 0.05;
width = 2;

shape_pts = shape_trapezium(
    [40, 20], 
    h = 20, 
    corner_r = 2
);

p0 = [0, 0, 0];
p1 = [40, 60, 35];
p2 = [-50, 70, 45];
p3 = [20, 150, 55];
p4 = [80, 50, 60];

path_pts = bezier_curve(t_step, 
    [p0, p1, p2, p3, p4]
);

path_extrude(shape_pts, path_pts);   

shape_trapezium