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Merge branch 'martinbudden-render_if'

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Chris Palmer 2020-12-20 21:30:39 +00:00
commit 76ea28e88e
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1
readme.md
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@ -6098,6 +6098,7 @@ Global constants, functions and modules. This file is used directly or indirectl
| ```ellipse(xr, yr)``` | Draw an ellipse | | ```ellipse(xr, yr)``` | Draw an ellipse |
| ```extrude_if(h, center = true)``` | Extrudes 2D object to 3D when ```h``` is nonzero, otherwise leaves it 2D | | ```extrude_if(h, center = true)``` | Extrudes 2D object to 3D when ```h``` is nonzero, otherwise leaves it 2D |
| ```hflip(flip=true)``` | Invert children by doing a 180° flip around the Y axis | | ```hflip(flip=true)``` | Invert children by doing a 180° flip around the Y axis |
| ```render_if(render = true, convexity = 2)``` | Renders an object if ```render``` is true, otherwise leaves it unrendered |
| ```right_triangle(width, height, h, center = true)``` | A right angled triangle with the 90° corner at the origin. 3D when ```h``` is nonzero, otherwise 2D | | ```right_triangle(width, height, h, center = true)``` | A right angled triangle with the 90° corner at the origin. 3D when ```h``` is nonzero, otherwise 2D |
| ```semi_circle(r, d = undef)``` | A semi circle in the positive Y domain | | ```semi_circle(r, d = undef)``` | A semi circle in the positive Y domain |
| ```translate_z(z)``` | Shortcut for Z only translations | | ```translate_z(z)``` | Shortcut for Z only translations |

7
utils/core/global.scad
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@ -52,6 +52,13 @@ function slice(list, start = 0, end = undef) = let( //! Slice a list or string w
) is_string(list) ? slice_str(list, start, end) : [for(i = [start : 1 : end - 1]) list[i]]; ) is_string(list) ? slice_str(list, start, end) : [for(i = [start : 1 : end - 1]) list[i]];
module render_if(render = true, convexity = 2) //! Renders an object if ```render``` is true, otherwise leaves it unrendered
if (render)
render(convexity = convexity)
children();
else
children();
module extrude_if(h, center = true) //! Extrudes 2D object to 3D when ```h``` is nonzero, otherwise leaves it 2D module extrude_if(h, center = true) //! Extrudes 2D object to 3D when ```h``` is nonzero, otherwise leaves it 2D
if(h) if(h)
linear_extrude(h, center = center, convexity = 2) // 3D linear_extrude(h, center = center, convexity = 2) // 3D