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46 lines
1.5 KiB
Markdown
46 lines
1.5 KiB
Markdown
# crystal_ball
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Uses spherical coordinate system to create a crystal ball.
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## Parameters
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- `radius` : The radial distance r.
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- `theta` : The azimuthal angle. It defaults to 360. It also accepts a 2 element vector. The first element of the vector is the beginning angle in degrees, and the second element is the ending angle.
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- `phi` : The polar angle. It defaults to 180. It also accepts a 2 element vector. The first element of the vector is the beginning angle in degrees, and the second element is the ending angle.
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- `thickness` : The thickness of the ball. **Since:** 2.1
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- `$fa`, `$fs`, `$fn` : Check [the circle module](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Using_the_2D_Subsystem#circle) or [the sphere module](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Primitive_Solids#sphere) for more details. The final fragments will be a multiple of 4 to fit edges.
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## Examples
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use <crystal_ball.scad>
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crystal_ball(radius = 6);
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translate([12, 0, 0])
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crystal_ball(
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radius = 6,
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theta = 270,
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thickness = 1,
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$fn = 12
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);
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translate([24, 0, 0])
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crystal_ball(
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radius = 6,
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theta = 270,
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phi = 90,
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$fn = 12
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);
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translate([36, 0, 0])
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crystal_ball(
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radius = 6,
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theta = [-30, 270],
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phi = [30, 60],
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thickness = 2
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);
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