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Informatix

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• Oct 26, 2013

• #2

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

 

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latch

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• Oct 26, 2013

• #3

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

 

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latch

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• Oct 27, 2013

• #4

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:

B4X:

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

 

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Informatix

Expert

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Longtime User

• Oct 27, 2013

• #5

Use IU.MakeMutable to get rid of the error.

 

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latch

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• Oct 27, 2013

• #6

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!

 

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latch

Active Member

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Longtime User

• Oct 27, 2013

• #7

I found it- it's a roundabout way:

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

B4X:

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

 

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Informatix

Expert

Licensed User

Longtime User

• Oct 28, 2013

• #8

latch said:

I found it- it's a roundabout way:

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

B4X:

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

Click to expand...

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

 

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