cyb at lepi.org
Tue Jul 6 00:49:40 CEST 2004
> * Iterators
> Iterators offer random and linear read/write access to channels, pixels
> and 2 dimensional arrays of pixels.
> Iterators return pixel data as a vector/array (whatever, but preferably
> not a pointer to a amorphous chunk of bytes*) of bytes which can be
> interpreted by the colour strategy as a colour.
> Iterators can skip pixels according to selection status, with a degree of
I have already made a change (not commited yet), that will help : I have add
an "=" operator that will make the convert to QUANTUM* operator deprecated.
> Iterators and single pixel values are passed to the colour strategies for
> colour model specific handling.
I was planning to work on that specific part during this week. And I was
planning to implement a second type of iterrator that will return a class
representing a pixel.
> Colour strategies can render their pixels to display RGB format (i.e. a
or better a QPixmap.
When writting the grayscale strategy, I noticed that there was a lot of
unnecessary call to the render function of the strategies, I wonder if it
wouldn't be faster to have a tile manager of pixmap. This way, we only have
to compute the transformation if the tile has been changed.
--- Cyrille Berger ---
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