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45 lines
1.2 KiB
Markdown
45 lines
1.2 KiB
Markdown
# m_rotation
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Generate a 4x4 transformation matrix which can pass into `multmatrix` to rotate the child element about the axis of the coordinate system or around an arbitrary axis.
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**Since:** 1.1
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## Parameters
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- `a` : If it's `[deg_x, deg_y, deg_z]`, the rotation is applied in the order `x`, `y`, `z`. If it's `[deg_x, deg_y]`, the rotation is applied in the order `x`, `y`. If it's`[deg_x]`, the rotation is only applied to the `x` axis. If it's an number, the rotation is only applied to the `z` axis or an arbitrary axis.
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- `v`: A vector allows you to set an arbitrary axis about which the object will be rotated. When `a` is an array, the `v` argument is ignored.
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## Examples
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use <matrix/m_rotation.scad>;
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point = [20, 0, 0];
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a = [0, -45, 45];
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hull() {
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sphere(1);
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multmatrix(m_rotation(a))
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translate(point)
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sphere(1);
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}
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use <matrix/m_rotation.scad>;
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v = [10, 10, 10];
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hull() {
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sphere(1);
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translate(v)
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sphere(1);
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}
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p = [10, 10, 0];
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for(i = [0:20:340]) {
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multmatrix(m_rotation(a = i, v = v))
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translate(p)
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sphere(1);
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}
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