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replaced the new math functions with rotate and transform

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This commit is contained in:
Alex Verschoot
2025-03-13 22:37:53 +01:00
parent 0123885711
commit 3a62198183
2 changed files with 3 additions and 27 deletions
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4
utils/dimension.scad
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@@ -59,9 +59,9 @@ module dimension(startpoint, endpoint, text = "", thickness = 0.1) {
// Draw the text/distance // Draw the text/distance
dir = (length > 0) ? (direction / length) * thickness * 4 : [1, 0, 0]; dir = (length > 0) ? (direction / length) * thickness * 4 : [1, 0, 0];
up_dir = rotate_vector_3d([0,1,0], [0,0,1] ,azimuth); up_dir = transform([0,1,0], rotate(azimuth));
translate(midpoint + up_dir*0.66) translate(midpoint + up_dir*thickness)
rotate([0, elevation, azimuth]) rotate([0, elevation, azimuth])
linear_extrude(thickness) linear_extrude(thickness)
text(text == "" ? str(length) : text, size = thickness * 5, valign = "bottom", halign = "center"); text(text == "" ? str(length) : text, size = thickness * 5, valign = "bottom", halign = "center");

26
utils/maths.scad
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@@ -190,28 +190,4 @@ function cubic_real_roots(a, b, c, d) = //! Returns real roots of cubic equation
function path_length(path, i = 0, length = 0) = //! Calculated the length along a path function path_length(path, i = 0, length = 0) = //! Calculated the length along a path
i >= len(path) - 1 ? length i >= len(path) - 1 ? length
: path_length(path, i + 1, length + norm(path[i + 1] - path[i])); : path_length(path, i + 1, length + norm(path[i + 1] - path[i]));
function rotate_vector_2d(v, angle) = [
v[0] * cos(angle) - v[1] * sin(angle),
v[0] * sin(angle) + v[1] * cos(angle)
];
function rotation_matrix(axis, angle) = let(
u = axis / norm(axis), // Normalize axis
ux = u[0], uy = u[1], uz = u[2],
cosA = cos(angle), sinA = sin(angle),
one_minus_cosA = 1 - cosA
) [
[cosA + ux*ux*one_minus_cosA, ux*uy*one_minus_cosA - uz*sinA, ux*uz*one_minus_cosA + uy*sinA],
[uy*ux*one_minus_cosA + uz*sinA, cosA + uy*uy*one_minus_cosA, uy*uz*one_minus_cosA - ux*sinA],
[uz*ux*one_minus_cosA - uy*sinA, uz*uy*one_minus_cosA + ux*sinA, cosA + uz*uz*one_minus_cosA]
];
function rotate_vector_3d(v, axis, angle) = let(
mat = rotation_matrix(axis, angle)
) [
mat[0][0]*v[0] + mat[0][1]*v[1] + mat[0][2]*v[2],
mat[1][0]*v[0] + mat[1][1]*v[1] + mat[1][2]*v[2],
mat[2][0]*v[0] + mat[2][1]*v[1] + mat[2][2]*v[2]
];