Android Code Snippet [B4X] [XUI] Light Effect

Have you ever thought of making a lighting effect on an image?
If you do not, I thought about it ... this is a small code with a simple trick that allows you to get it with B4X

Sub ImageView1_Click
    Light(Sender)
End Sub

Sub ImageView2_Click
    Light(Sender)
End Sub

Sub Light(ImageView As B4XView)
    Dim xui As XUI
    Dim PanelBase As B4XView = xui.CreatePanel("")
    Dim PanelEffect As B4XView = xui.CreatePanel("")
    Dim Dv as int = 3  ' effect width = mBase.Width/Dv

    ImageView.Parent.AddView(PanelBase,ImageView.Left,ImageView.Top,ImageView.Width,ImageView.Height)
    PanelBase.BringToFront
    PanelBase.AddView(PanelEffect,-200DIP,-150dip,PanelBase.Width/DV,PanelBase.Height+300dip)
 
    Dim Can As B4XCanvas
    Dim MaxW As Int = PanelEffect.Width-1
 
    Can.Initialize(PanelEffect)
 
    For x=0 To MaxW
        Dim C As Int = 255*(1-Sin(cPI*(((x+MaxW/2) Mod MaxW)/MaxW)))
        Can.DrawLine(x,0,x,PanelEffect.Height,xui.Color_ARGB(C,255,255,255),1dip)
    Next
    PanelEffect.Rotation=45
 
    PanelEffect.SetLayoutAnimated(400,PanelBase.Width*1.8,0,PanelEffect.Width,PanelEffect.Height)
 
    Can.Invalidate
    Sleep(400)
    Can.Release
    PanelBase.RemoveViewFromParent
End Sub

 

[LucaMs]

Very good.

Have you ever thought of making a lighting effect on an image?

Often, on a text (image with a text can even work well).

I will try (to change direction, angle and speed)