Rainbowduino API request ;)

End-Of-Life Products & Services Tech support before 2012
#1

Hey guys,

Can I ask for a couple of features on the Rainbowduino API?

Is it possible to have a function which, on the current frame sets a single pixel: I am trying to work with:
void set_current_frame_pixel(byte x, byte y, byte red, byte green, byte blue);

…but that seems to decrease in brightness/color as you increase Y.

and another function which would be useful is:
void get_frame_pixel(byte frame_nr, byte x, byte y, byte &red, byte &green, byte &blue);

… I had a bash at reverse engineering the set code but I ran a little short on getting it working.

Finally, would it be possible to write a quick example on shifting all pixels in a particular direction using a bitwise operation rather than setting/unsetting each pixel in the display.

Cheers,
Miles

#2

Yes , it’s easy to set a dot , just modify 3X4Bit in the buffer where the position you want to set.

and get a dot is also just read back the data from buffer.

to just shit the particular direction is possible but it’s not so easy as below.

#3

Would you mind writing an example of fetching a pixel and setting a pixel?

I don’t mind integrating that into the library :wink:

#4

Hi Miles, look in the rainbow_plasma source (code.google.com/p/rainbowmcompat/) has SetPxClr and GetPixel[RGB] functions.

#5

Cheers dave, will do