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Code Issues Releases Wiki Activity

do things when method is EULER_ANGLE

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Justin Lin
2019-05-31 10:19:33 +08:00
parent b9a3d5c496
commit 0cec181a0b
1 changed files with 58 additions and 5 deletions
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63
src/along_with.scad
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@@ -36,8 +36,15 @@ module along_with(points, angles, twist = 0, scale = 1.0, method = "AXIS_ANGLE")
let(s = (scale - 1) / leng_points_minus_one) let(s = (scale - 1) / leng_points_minus_one)
[s, s, s]; [s, s, s];
// get rotation matrice for sections
/*
Sadly, children(n) cannot be used with inner modules
so I have to do things in the first level. Ugly!!
*/
// >>> begin: modules and functions for "AXIS-ANGLE"
// get rotation matrice for sections
identity_matrix = [ identity_matrix = [
[1, 0, 0, 0], [1, 0, 0, 0],
[0, 1, 0, 0], [0, 1, 0, 0],
@@ -113,10 +120,41 @@ module along_with(points, angles, twist = 0, scale = 1.0, method = "AXIS_ANGLE")
} }
} }
/* // <<< end: modules and functions for "AXIS-ANGLE"
Sadly, children(n) cannot be used with inner modules
so I have to do things in the first level. Ugly!!
*/ // >>> begin: modules and functions for "EULER-ANGLE"
function _euler_angle_path_angles(pts, end_i, i = 0) =
i == end_i ?
[] :
concat(
[__angy_angz(pts[i], pts[i + 1])],
_euler_angle_path_angles(pts, end_i, i + 1)
);
function euler_angle_path_angles(children) =
let(
pts = len(points[0]) == 3 ? points : [for(pt = points) __to3d(pt)],
end_i = children == 1 ? leng_points_minus_one : children - 1,
angs = _euler_angle_path_angles(pts, end_i)
)
concat(
[[0, -angs[0][0], angs[0][1]]],
[for(a = angs) [0, -a[0], a[1]]]
);
module euler_angle_align(i, angs) {
translate(points[i])
rotate(angs[i])
rotate(angles_defined ? [0, 0, 0] : [90, 0, -90])
rotate(twist_step_a * i)
scale([1, 1, 1] + scale_step_vt * i)
children(0);
}
// <<< end: modules and functions for "EULER-ANGLE"
if(method == "AXIS_ANGLE") { if(method == "AXIS_ANGLE") {
if(angles_defined) { if(angles_defined) {
if($children == 1) { if($children == 1) {
@@ -154,5 +192,20 @@ module along_with(points, angles, twist = 0, scale = 1.0, method = "AXIS_ANGLE")
} }
} }
} }
else if(method == "EULER_ANGLE") {
if($children == 1) {
angs = angles_defined ? angles : euler_angle_path_angles($children);
for(i = [0:leng_points_minus_one]) {
euler_angle_align(i, angs) children(0);
}
} else {
for(i = [0:min(leng_points, $children) - 1]) {
euler_angle_align(i, angs) children(i);
}
}
}
} }