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Added point attachment geometry.

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Revar Desmera
2023-03-07 13:07:21 -08:00
parent 8b6e5aeefb
commit e3d4de3e1d
1 changed files with 13 additions and 1 deletions
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@@ -2080,6 +2080,8 @@ function named_anchor(name, pos, orient=UP, spin=0) = [name, pos, orient, spin];
// Function: attach_geom() // Function: attach_geom()
// //
// Usage: Null/Point Geometry
// geom = attach_geom(...);
// Usage: Square/Trapezoid Geometry // Usage: Square/Trapezoid Geometry
// geom = attach_geom(two_d=true, size=, [size2=], [shift=], ...); // geom = attach_geom(two_d=true, size=, [size2=], [shift=], ...);
// Usage: Circle/Oval Geometry // Usage: Circle/Oval Geometry
@@ -2129,6 +2131,9 @@ function named_anchor(name, pos, orient=UP, spin=0) = [name, pos, orient, spin];
// two_d = If true, the attachable shape is 2D. If false, 3D. Default: false (3D) // two_d = If true, the attachable shape is 2D. If false, 3D. Default: false (3D)
// axis = The vector pointing along the axis of a geometry. Default: UP // axis = The vector pointing along the axis of a geometry. Default: UP
// //
// Example(NORENDER): Null/Point Shape
// geom = attach_geom();
//
// Example(NORENDER): Cubical Shape // Example(NORENDER): Cubical Shape
// geom = attach_geom(size=size); // geom = attach_geom(size=size);
// //
@@ -2281,7 +2286,7 @@ function attach_geom(
) )
) )
) : ) :
assert(false, "Unrecognizable geometry description."); ["point", cp, offset, anchors];
@@ -2315,6 +2320,7 @@ function _attach_geom_2d(geom) =
// Returns the `[X,Y,Z]` bounding size for the given attachment geometry description. // Returns the `[X,Y,Z]` bounding size for the given attachment geometry description.
function _attach_geom_size(geom) = function _attach_geom_size(geom) =
let( type = geom[0] ) let( type = geom[0] )
type == "point"? [0,0,0] :
type == "prismoid"? ( //size, size2, shift, axis type == "prismoid"? ( //size, size2, shift, axis
let( let(
size=geom[1], size2=geom[2], shift=point2d(geom[3]), size=geom[1], size2=geom[2], shift=point2d(geom[3]),
@@ -2555,6 +2561,12 @@ function _find_anchor(anchor, geom) =
pos2 = rot(from=UP, to=axis, p=pos), pos2 = rot(from=UP, to=axis, p=pos),
vec2 = anch==CENTER? UP : rot(from=UP, to=axis, p=vec) vec2 = anch==CENTER? UP : rot(from=UP, to=axis, p=vec)
) [anchor, pos2, vec2, oang] ) [anchor, pos2, vec2, oang]
) : type == "point"? (
let(
anchor = unit(point3d(anchor),CENTER),
pos = point3d(cp) + point3d(offset),
vec = unit(anchor,UP)
) [anchor, pos, vec, oang]
) : type == "spheroid"? ( //r ) : type == "spheroid"? ( //r
let( let(
rr = geom[1], rr = geom[1],