Writing 32 color information to ByteSeq

[Helper]

On 17/06/2013 at 03:08, xxxxxxxx wrote:

I'm trying to partly copy 32 bit images.
Copying a part of an image to another images is working.
However, when I tried to set my own 32 bit pixel color information it goes wrong.

I do not know how to initialize the byteseq with 32 bit color information.
I tried this, but it comes out all black. No color information.

What I do:
- create a byteseq for 1 pixel. 32 bits x 3 colors = 96 bits = 12 bytes
- fill the byteseq with R=0xFFFFFFFF, G=0, B=0xFF
- write the pixel to the image, but no colors. Everything is black

    b12 = storage.ByteSeq(None, 12)                     	# size = 12 bytes = 1 pixel
    b12[0:4]  = chr(255)*4                              		# 0xFFFFFFFF
    b12[4:8]  = chr(0)*4                                		# 0x00000000
    b12[8:12] = chr(0) + chr(0) + chr(0) + chr(255)     # 0x000000FF
  
    #copy to image 
    for row in range(100,400) :
        for x in range (200,800) :
            #offset = b12.GetOffset(0)                  #offset in byteseq
            pixels2copy = 1
            copy.SetPixelCnt(x, row, pixels2copy, b12, inc, c4d.COLORMODE_RGBf, c4d.PIXELCNT_0) # Set pixels in bitmap copy
    
  
    bitmaps.ShowBitmap(copy) # Show copied image

[Helper]

On 17/06/2013 at 07:20, xxxxxxxx wrote:

This seems to work.
One thing that puzzles me, is the format of the value I can give.
0xffffffff, 0.9999, 1.0, it is all ok.

    b12 = storage.ByteSeq(None, 12)
    b12[0:4]  = struct.pack("f", 0xffffffff)            # R
    b12[4:8]  = struct.pack("f", 0.9999)                # G
    b12[8:12] = struct.pack("f", 1.0)                   # B