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Fix .binvox files being saved with the inverse scale #4710

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Fix .binvox files being saved with the inverse scale #4710

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According to the binvox specification the scale stored in binvox should be what the normalized voxel coordinates (in the interval [0, 1]) should be scaled by.

binvox now includes two extra lines in the header (which may be omitted, viewvox and thinvox don't need them):
translate <t_x> <t_y> <t_z>
scale <scale factor>
First scale (x_n, y_n, z_n) by the scale factor, then translate them by (t_x, t_y, t_z)

This is also how the scale is interpreted in this Python binvox implementation.

How Has This Been Tested?

Tested by using other implementations to read the resulting .binvox files.

@sotpapathe
Fix .binvox files being saved with the inverse scale
b87773a 
According to the specification the scale stored in binvox should be what
the normalized voxel coordinates (in the interval [0, 1]) should be
scaled by.

https://www.patrickmin.com/binvox/binvox.html
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