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Code Issues Releases Wiki Activity

removed triangle indexes

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Justin Lin
2017-05-10 16:56:13 +08:00
parent 6f092f4dee
commit 8b8abd1021
2 changed files with 12 additions and 27 deletions
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11
docs/lib-shape_pentagram.md
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@@ -1,6 +1,6 @@
# shape_pentagram # shape_pentagram
Returns shape points and triangle indexes of a pentagram. 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 pentagram. They can be used with xxx_extrude modules of dotSCAD. The shape points can be also used with the built-in polygon module.
## Parameters ## Parameters
@@ -10,7 +10,7 @@ Returns shape points and triangle indexes of a pentagram. They can be used with
include <shape_pentagram.scad>; include <shape_pentagram.scad>;
polygon(shape_pentagram(5)[0]); polygon(shape_pentagram(5));
![shape_pentagram](images/lib-shape_pentagram-1.JPG) ![shape_pentagram](images/lib-shape_pentagram-1.JPG)
@@ -22,15 +22,14 @@ Returns shape points and triangle indexes of a pentagram. They can be used with
include <polysections.scad>; include <polysections.scad>;
include <golden_spiral_extrude.scad>; include <golden_spiral_extrude.scad>;
shape_pts_tris = shape_pentagram(2); shape_pts = shape_pentagram(2);
golden_spiral_extrude( golden_spiral_extrude(
shape_pts_tris[0], shape_pts,
from = 5, from = 5,
to = 10, to = 10,
point_distance = 1, point_distance = 1,
scale = 10, scale = 10
triangles = shape_pts_tris[1]
); );
![shape_pentagram](images/lib-shape_pentagram-2.JPG) ![shape_pentagram](images/lib-shape_pentagram-2.JPG)

28
src/shape_pentagram.scad
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@@ -1,7 +1,7 @@
/** /**
* shape_pentagram.scad * shape_pentagram.scad
* *
* Returns shape points and triangle indexes of a pentagram. * Returns shape points of a pentagram.
* They can be used with xxx_extrude modules of dotSCAD. * They can be used with xxx_extrude modules of dotSCAD.
* The shape points can be also used with the built-in polygon module. * The shape points can be also used with the built-in polygon module.
* *
@@ -14,23 +14,9 @@
function shape_pentagram(r) = function shape_pentagram(r) =
[ [
// shape points [0, 1], [-0.224514, 0.309017],
[ [-0.951057, 0.309017], [-0.363271, -0.118034],
[0, 1], [-0.224514, 0.309017], [-0.587785, -0.809017], [0, -0.381966],
[-0.951057, 0.309017], [-0.363271, -0.118034], [0.587785, -0.809017], [0.363271, -0.118034],
[-0.587785, -0.809017], [0, -0.381966], [0.951057, 0.309017], [0.224514, 0.309017]
[0.587785, -0.809017], [0.363271, -0.118034], ] * r;
[0.951057, 0.309017], [0.224514, 0.309017]
] * r,
// triangles
[
[0, 1, 9],
[2, 3, 1],
[4, 5, 3],
[6, 7, 5],
[8, 9, 7],
[1, 3, 5],
[1, 5, 7],
[1, 7, 9]
]
];