algorithmic modeling for Rhino
Let's say that you want to put as accurately as possible a floating point data encoded into a BMP, PNG, or another not compressed or lossless format, and you are trying to do it with the tools provided by System.Drawing (I know, there is a module called PIL that works in Python but I couldn't get it properly working so I just jumped to System namespace...).
The first problem that I found is that there is no a direct way to store colours into saved images in other format different than 8 bits per channel...
PixelFormat48bppRGB, PixelFormat64bppARGB, and PixelFormat64bppPARGB use 16 bits per color component (channel). GDI+ version 1.0 and 1.1 can read 16-bits-per-channel images, but such images are converted to an 8-bits-per-channel format for processing, displaying, and saving. Each 16-bit color channel can hold a value in the range 0 through 2^13.
From -> here.
...so the accuracy of the information stored is very very low (as much as 256 possible values per channel, ≈ 16M of different values per pixel) if I need to store the data in the hard-drive (thing that I would anxiously like to do for further processing).
...the thing is that I know that using:
imageTest = System.Drawing.Bitmap(mX,mY,System.Drawing.Imaging.PixelFormat.Format48bppRgb)
...I can create a 16bits per channel image, but how could I specify the 16bit color if System.Drawing.Color limit the range to 8bits values?
Thanks in advance ;)
Pffff...I found THIS and it looks that I have just entered an "interesting" maze :S
Any additional advice is welcome ;) I'll start tomorrow implementing that if I don't find any better way to write 16bit channels into an image file.
Thanks in advance.
By searching, just like you, I found this one library that is wrapped for .Net. You could have a look at that, too.
for Robert McNeel & Associates
I'm not sure if this helps, but I'm using the writeable bitmap in C#:
You can specify the pixel format, which at most would give you 4 x 16 = 64 bits.
If that's not enough, then I'd think image is not the right file format anyway - you could just use a *.csv or similar.