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Move affine3d_frame_map to transforms.scad and rename to frame_map.

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Add module version.  Change all calls.
This commit is contained in:
Adrian Mariano
2021-09-06 18:07:03 -04:00
parent 4fee72f517
commit 0aad39c7e5
7 changed files with 102 additions and 72 deletions
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8
skin.scad
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@@ -1355,7 +1355,7 @@ function path_sweep(shape, path, method="incremental", normal, closed=false, twi
let(rotations =
[for( i = 0,
ynormal = normal - (normal * tangents[0])*tangents[0],
rotation = affine3d_frame_map(y=ynormal, z=tangents[0])
rotation = frame_map(y=ynormal, z=tangents[0])
;
i < len(tangents) + (closed?1:0) ;
rotation = i<len(tangents)-1+(closed?1:0)? rot(from=tangents[i],to=tangents[(i+1)%L])*rotation : undef,
@@ -1374,7 +1374,7 @@ function path_sweep(shape, path, method="incremental", normal, closed=false, twi
last_tangent = last(tangents),
lastynormal = last_normal - (last_normal * last_tangent) * last_tangent
)
affine3d_frame_map(y=lastynormal, z=last_tangent),
frame_map(y=lastynormal, z=last_tangent),
mismatch = transpose(last(rotations)) * reference_rot,
correction_twist = atan2(mismatch[1][0], mismatch[0][0]),
// Spread out this extra twist over the whole sweep so that it doesn't occur
@@ -1387,7 +1387,7 @@ function path_sweep(shape, path, method="incremental", normal, closed=false, twi
[for(i=[0:L-(closed?0:1)]) let(
ynormal = relaxed ? normals[i%L] : normals[i%L] - (normals[i%L] * tangents[i%L])*tangents[i%L],
znormal = relaxed ? tangents[i%L] - (normals[i%L] * tangents[i%L])*normals[i%L] : tangents[i%L],
rotation = affine3d_frame_map(y=ynormal, z=znormal)
rotation = frame_map(y=ynormal, z=znormal)
)
assert(approx(ynormal*znormal,0),str("Supplied normal is parallel to the path tangent at point ",i))
translate(path[i%L])*rotation*zrot(-twist*pathfrac[i]),
@@ -1400,7 +1400,7 @@ function path_sweep(shape, path, method="incremental", normal, closed=false, twi
dummy = min(testnormals) < .5 ? echo("WARNING: ***** Abrupt change in normal direction. Consider a different method *****") :0
)
[for(i=[0:L-(closed?0:1)]) let(
rotation = affine3d_frame_map(x=pathnormal[i%L], z=tangents[i%L])
rotation = frame_map(x=pathnormal[i%L], z=tangents[i%L])
)
translate(path[i%L])*rotation*zrot(-twist*pathfrac[i])
] :