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Fixed function scale() for scalar scaling.

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Revar Desmera 2019-06-11 22:26:09 -07:00
parent 6242ec6dd9
commit f927ac6c10
1 changed files with 7 additions and 4 deletions
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11
transforms.scad
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@ -386,9 +386,10 @@ module zrot(a=0, cp=undef)
// Function&Module: scale()
// Usage: As Module
// scale(SCALAR) ...
// scale([X,Y,Z]) ...
// Usage: Scale Points
// pts = scale(a, pts);
// pts = scale(a, p);
// Usage: Get Scaling Matrix
// mat = scale(a);
// Description:
@ -397,14 +398,16 @@ module zrot(a=0, cp=undef)
// scaling factors in `a`. When called as a function with a list of points in the `p` argument,
// returns the list of points, with each one scaled by the [X,Y,Z] scaling factors in `a`.
// Arguments:
// a = The [X,Y,Z] scaling factors.
// a = The [X,Y,Z] scaling factors, or a scalar value for uniform scaling across all axes. Default: 1
// p = If called as a function, the point or list of points to scale.
// Example(NORENDER):
// pt1 = scale([2,3,4], p=[3,1,4]); // Returns: [6,3,16]
// pt1 = scale(3, p=[3,1,4]); // Returns: [9,3,12]
// pt2 = scale([2,3,4], p=[3,1,4]); // Returns: [6,3,16]
// pt3 = scale([2,3,4], p=[[1,2,3],[4,5,6]]); // Returns: [[2,6,12], [8,15,24]]
// mat2d = scale([2,3]); // Returns: [[2,0,0],[0,3,0],[0,0,1]]
// mat3d = scale([2,3,4]); // Returns: [[2,0,0,0],[0,3,0,0],[0,0,4,0],[0,0,0,1]]
function scale(a=[1,1,1], p=undef) =
function scale(a=1, p=undef) =
let(a = is_num(a)? [a,a,a] : a)
is_undef(p)? (
len(a)==2? affine2d_scale(a) : affine3d_scale(point3d(a))
) : (