Android Question Palette Swap

[latch]

So you can see from my games, I use a buttload of bitmaps:
http://www.b4x.com/android/forum/threads/sup-r-m-troid-wannabe.31185/

I use 90ish bitmaps to animate the dude. One day I will add in the story another exosuit the dude gets and it will be a different color.

Is there a way to alter the palette of a loaded bitmap?

Slightly related, is there way to alter the alpha?

I guess I should add I am using the Accelerated Surface de Informatix

 

[Informatix]

AlterColors from the ImageUtils class is not useful?
You can also give a try to the ABExtDrawing lib.

 

[latch]

I don't know, but I will check them out. Thank you sir!

 

[latch]

It looks like AlterColors will work but I don't know how to implement it. I need to be able to draw the altered bitmap in the accelerated surface. Of course, I'm drawing a lot of rocks and so I would want to alter the colors somewhere else and then draw it ten hundred times. I'm getting the immutable error:

sub begin
    stone.InitializeMutable(128,128)
    stone = LoadBitmap(File.DirAssets, "images/stoneshadow.png")
end sub

sub surfacedraw

ac.DrawBitmapWithMatrixAt(IU.AlterColors(stone,-1,355,1),(c*128-mx)*scale, (l*128-my)*scale, True)

end sub

 

[Informatix]

Use IU.MakeMutable to get rid of the error.

 

[latch]

I had not updated my AC library so it didn't work till I did. I see you got rid of drawrectrotated. What did you replace that with as I was using it extensively and it broke my sparks!

 

[latch]

I found it- it's a roundabout way:

In this example of rotation, only the rectangle is rotated:

AC.SaveState
AC.RotateCanvas(45)
AC.DrawRect(rctRect, Colors.Red, True, 0, True)
AC.RestoreState
AC.DrawOval(rctOval, Colors.Blue, True, 0, True)

 

[Informatix]

I found it- it's a roundabout way:

In this example of rotation, only the rectangle is rotated:

AC.SaveState
AC.RotateCanvas(45)
AC.DrawRect(rctRect, Colors.Red, True, 0, True)
AC.RestoreState
AC.DrawOval(rctOval, Colors.Blue, True, 0, True)

Yes, it's the new way of rotating things. It's more efficient because you can group the objects to rotate.