Android Question [Solved] FadeIn effect in BitmapCreator Effects

[asales]

I have the FadeOut effect in the BitmapCreator Effects library:
https://www.b4x.com/android/forum/threads/b4x-bitmapcreator-effects.93608/
where the original bitmap is changed to a black background.

How I can do a "FadeIn" effect, where the black background turned to original bitmap, without have a black image to made the transition?

Thanks in advance for any tip.

 

[LucaMs]

Just one way to do it inside the example.

In the class Example, declare a global variable:

' Class Example
Sub Class_Globals
'...
'...
'...
    Private FadedOut As Boolean

and change the routine FadeOut_Animated:

Private Sub FadeOut_Animated (iv As B4XView)
   Dim bc As BitmapCreator
   bc.Initialize(OriginalBmp.Width / OriginalBmp.Scale, OriginalBmp.Height / OriginalBmp.Scale)
   bc.FillRect(xui.Color_Transparent, bc.TargetRect)
   If FadedOut Then
       effects.TransitionAnimated(1500, bc.Bitmap, OriginalBmp, iv)
   Else
       effects.TransitionAnimated(1500, OriginalBmp, bc.Bitmap, iv)
   End If
   FadedOut = Not(FadedOut)
End Sub

 

[Erel]

As Luca wrote the code to make a fade in effect is exactly the same as fade out, you just need to switch the 'FromBmp' and 'ToBmp':

  Dim bc As BitmapCreator
   bc.Initialize(OriginalBmp.Width / OriginalBmp.Scale, OriginalBmp.Height / OriginalBmp.Scale)
   bc.FillRect(xui.Color_Transparent, bc.TargetRect)
   effects.TransitionAnimated(1500, bc.Bitmap, OriginalBmp, iv)

 

[asales]

Thanks both of you!

I made the changes and change this part of the code to start with no bitmap:

AddImageAndLabel2(Null, "FadeIn (Click)", "FadeIn_Animated")