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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
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
@@ -10,7 +10,7 @@ Returns shape points and triangle indexes of a pentagram. They can be used with
include <shape_pentagram.scad>;
polygon(shape_pentagram(5)[0]);
polygon(shape_pentagram(5));
![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 <golden_spiral_extrude.scad>;
shape_pts_tris = shape_pentagram(2);
shape_pts = shape_pentagram(2);
golden_spiral_extrude(
shape_pts_tris[0],
shape_pts,
from = 5,
to = 10,
point_distance = 1,
scale = 10,
triangles = shape_pts_tris[1]
scale = 10
);
![shape_pentagram](images/lib-shape_pentagram-2.JPG)

28
src/shape_pentagram.scad
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@@ -1,7 +1,7 @@
/**
* 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.
* The shape points can be also used with the built-in polygon module.
*
@@ -14,23 +14,9 @@
function shape_pentagram(r) =
[
// shape points
[
[0, 1], [-0.224514, 0.309017],
[-0.951057, 0.309017], [-0.363271, -0.118034],
[-0.587785, -0.809017], [0, -0.381966],
[0.587785, -0.809017], [0.363271, -0.118034],
[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]
]
];
[0, 1], [-0.224514, 0.309017],
[-0.951057, 0.309017], [-0.363271, -0.118034],
[-0.587785, -0.809017], [0, -0.381966],
[0.587785, -0.809017], [0.363271, -0.118034],
[0.951057, 0.309017], [0.224514, 0.309017]
] * r;