Bytes are signed in Java, so 137 is not what you want. Also, Color.rgb() take ints, not bytes. So (byte) 137 cast as an int results in rg == -119.
On Fri, May 22, 2009 at 1:09 PM, Gavin Aiken <[email protected]> wrote: > Hey all, > > Before I submit this I just wanted to check it's not a java nuiance. > > The Color class can be used to extract rgb values from a pixel (32 bit int). > > I implemented a lookup table filter and used a byte to store each individual > r g & b value to save a bit of space. > > Long story short; > > public void testColor(){ > > int nr = (byte)0; // Simulation of lookup in array of byte values > representing individual bands > int ng = (byte)0; > int nb = (byte)0; > int nc = Color.rgb(nr, ng, nb); > > assertEquals(nr,Color.red(nc)); > assertEquals(ng,Color.green(nc)); > assertEquals(ng,Color.blue(nc)); > > nr = (byte)0; > ng = (byte)137; > nb = (byte)0; > nc = Color.rgb(nr, ng, nb); > > assertEquals(nr,Color.red(nc)); // FAIL HERE > assertEquals(ng,Color.green(nc)); > assertEquals(nb,Color.blue(nc)); > } > > Failure in testColor: > junit.framework.AssertionFailedError: expected:<0> but was:<255> > at uk.ac.ic.doc.gea05.miffed.os.ColorTest.testColor(ColorTest.java:44) > > > Any ideas? > > 137 is the magic number causing the error in my case, there may be more. > > > Cheers! > > Gav > > > > > > > -- Romain Guy Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
