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Code Issues Releases Wiki Activity

removed triangle indexes

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This commit is contained in:
Justin Lin 2017-05-10 16:59:41 +08:00
parent 062ef1f20c
commit b0a1b93b0f
2 changed files with 14 additions and 21 deletions
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25
docs/lib-shape_superformula.md
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@ -1,6 +1,6 @@
# shape_superformula
Returns shape points and triangle indexes of a [Superformula](https://en.wikipedia.org/wiki/Superformula) shape. They can be used with xxx_extrude modules of dotSCAD. The shape points can be also used with the built-in polygon module.
Returns shape points of a [Superformula](https://en.wikipedia.org/wiki/Superformula) shape. They can be used with xxx_extrude modules of dotSCAD. The shape points can be also used with the built-in polygon module.
## Parameters
@ -13,22 +13,22 @@ Returns shape points and triangle indexes of a [Superformula](https://en.wikiped
phi_step = 0.05;
polygon(shape_superformula(phi_step, 3, 3, 4.5, 10, 10)[0]);
polygon(shape_superformula(phi_step, 3, 3, 4.5, 10, 10));
translate([3, 0])
polygon(shape_superformula(phi_step, 4, 4, 12, 15, 15)[0]);
polygon(shape_superformula(phi_step, 4, 4, 12, 15, 15));
translate([6, 0])
polygon(shape_superformula(phi_step, 7, 7, 10, 6, 6)[0]);
polygon(shape_superformula(phi_step, 7, 7, 10, 6, 6));
translate([9, 0])
polygon(shape_superformula(phi_step, 5, 5, 4, 4, 4)[0]);
polygon(shape_superformula(phi_step, 5, 5, 4, 4, 4));
translate([0, -4])
scale(0.8) polygon(shape_superformula(phi_step, 5, 5, 2, 7, 7)[0]);
scale(0.8) polygon(shape_superformula(phi_step, 5, 5, 2, 7, 7));
translate([3, -4])
scale(0.25) polygon(shape_superformula(phi_step, 5, 5, 2, 13, 13)[0]);
scale(0.25) polygon(shape_superformula(phi_step, 5, 5, 2, 13, 13));
translate([6, -4])
polygon(shape_superformula(phi_step, 4, 4, 1, 1, 1)[0]);
polygon(shape_superformula(phi_step, 4, 4, 1, 1, 1));
translate([9, -4])
scale(0.3) polygon(shape_superformula(phi_step, 4, 4, 1, 7, 8)[0]);
scale(0.3) polygon(shape_superformula(phi_step, 4, 4, 1, 7, 8));
![shape_superformula](images/lib-shape_superformula-1.JPG)
@ -46,15 +46,14 @@ Returns shape points and triangle indexes of a [Superformula](https://en.wikiped
n = 0.5;
n3 = 16;
shape_pts_tris = shape_superformula(phi_step, m, m, n, n, n3);
shape_pts = shape_superformula(phi_step, m, m, n, n, n3);
golden_spiral_extrude(
shape_pts_tris[0],
shape_pts,
from = 5,
to = 10,
point_distance = 2,
scale = 10,
triangles = shape_pts_tris[1]
scale = 10
);
![shape_superformula](images/lib-shape_superformula-2.JPG)

10
src/shape_superformula.scad
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@ -14,7 +14,6 @@
include <__private__/__ra_to_xy.scad>;
include <__private__/__to_degree.scad>;
include <__private__/__triangles_radial.scad>;
function _superformula_r(angle, m1, m2, n1, n2 = 1, n3 = 1, a = 1, b = 1) =
pow(
@ -34,11 +33,6 @@ function shape_superformula(phi_step, m1, m2, n1, n2 = 1, n3 = 1, a = 1, b = 1)
)
__ra_to_xy(r, angle)
],
shape_pts = concat([[0, 0]], pts, [pts[0]]),
triangles = __triangles_radial(shape_pts)
shape_pts = concat([[0, 0]], pts, [pts[0]])
)
[
shape_pts,
triangles
];
) shape_pts;