Backwards RGB conversion

Hey all, Rioku here again. But of a question for some conversion stuff that goes on.

http://www.giawa.com/magicavoxel-c-importer/

I'm using this script as a base for my voxel engine I'm building, and had a bit of a question. I'd like to know a way to convert the values in voxColors back into RGB values.

I assume there's a way to reverse this line: "colors = (ushort)(((r & 0x1f) << 10) | ((g & 0x1f) << 5) | (b & 0x1f));"(This line is used to convert the custom RGB value in custom palettes into ushorts) , but I've never done something like this before. So if anyone could show me how, it would be greatly appreciated.

I don't actually know how or why you would use ushorts instead of Colors for actual colors, either. Any info on that would be nice.

 

Here's an post from stackoverflow that you might find useful. Hope it helps

http://stackoverflow.com/questions/9130514/c-convert-ushort-to-float

An RGB color is just 3 float values between 0 and 1. So just convert the ushort to float and use those floats to construct a color. I could be wrong, maybe there is a better way

 

I honestly have no idea what I'm doing XD

Code (CSharp):

1. ushort[] buffer = VoxelReader.voxColors;
2.             byte[] bytes = new byte[4];
3.             bytes[0] = (byte)(buffer[1] & 0xFF);
4.             bytes[1] = (byte)(buffer[1] >> 8);
5.             bytes[2] = (byte)(buffer[0] & 0xFF);
6.             bytes[3] = (byte)(buffer[0] >> 8);
7.  
8.             Debug.Log( BitConverter.ToSingle(bytes,0) );
9.  

This comes up with NaN. VoxelReader.voxColors is the same ushort array as in that script. Doesn't seem to want to work. Unless I'm doing it wrong?

EDIT: Just a note, the RGB isn't save as 3 floats from 0 to 1. It's saving them as bytes from 0 to 255

 

I have no idea why you're using ushort to store color data. I didn't look at the link. I probably should because there is more going on than what I'm seeing.

 

Yeah. I don't know why that's what he decided to do either.