Ah...I see. Thanks, I will soon again tinker with color values.
On Feb 10, 3:45 pm, Mike Reed <[email protected]> wrote:
> If you want to set a component (e.g. RED) to zero, use these
>
> mul: 0xFF00FFFF
> add: 0
>
> If you want to force a component to be full-on (e.g. BLUE), use these
>
> mul: 0xFFFFFFFF
> add: 0x000000FF
>
> If you want to slightly darken RED and GREEN, use
>
> mul: 0xFFCCCCFF
> add: 0
>
> On Tue, Feb 10, 2009 at 3:41 PM, myIP <[email protected]> wrote:
>
> > Mike, thanks for the reply. Perhaps I don't fully understand how a
> > value is assigned to a color. Forgive me, I should have said "I am
> > perplexed" rather then "I was mislead".
>
> > Anyways, I am still perplexed. Can you give an example on how to
> > manipulate a red or green component? Do I need to use
> > android.graphics.Color.rgb() or Color.red(), etc., with
> > LightingColorFilter? I can't seem to get any color other then blue,
> > if I don't use a neg value.
>
> > On Feb 10, 7:47 am, Mike Reed <[email protected]> wrote:
> >> The int values are colors (see android.graphics.Color), and each of
> >> its 4 bytes (one for each alpha, red, green, blue components) range
> >> from 0..255, thus you can multiply/add each component with different
> >> coefficients.
>
> >> On Mon, Feb 9, 2009 at 5:52 PM, myIP <[email protected]> wrote:
>
> >> > It looks like the int values can range from -255 to 255. I was
> >> > mislead, the docs has a range of values of 0 to 255.
>
> >> > On Feb 9, 5:06 pm, myIP <[email protected]> wrote:
> >> >> How would I be able to adjust a channel (R,G or B) using
> >> >> ImageView.setColorFilter by passing an instance of LightingColorFilter
> >> >> in its construct?
>
> >> >> For an example, when I create an instance of LightingColorFilter, I
> >> >> adjust the two params that are int values between 0-255. With this
> >> >> instance, I then pass it into setColorFilter. The image always ends
> >> >> up anywhere from being black to blue. How can I adjust the Red or
> >> >> Green channel?
>
> >> >> LightingColorFilter lcf = new LightingColorFilter( mul, add);
> >> >> imageView.setColorFilter(lcf);
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