Android Question BCPath.arcTo implementation

[Sorin Pohontu]

Hello,

Any chance to have an implementation on BCPath.arcTo ?
Erel said something about this in this thread [B4X] Drawing with BitmapCreator, but didn't see implemented until now.

Thanks.

 

[Erel]

It was not implemented yet. Which figure do you want to draw?

 

[Sorin Pohontu]

Hi Erel,

Attached you can find 2 images: the BCPath I want to draw vs the BCPath I did it so far.
This was constructed only with LineTo.

Let me know if you need more info.

Thanks.

 

[Erel]

You can draw the path and then draw two arcs with BC.DrawArc.

 

[Sorin Pohontu]

Hi Erel,

Here is my current code:

Dim bc As BitmapCreator
Dim layerPath As BCPath
Dim layerImg As B4XBitmap = xui.LoadBitmapResize(File.DirAssets, "layer_0.png", 100%x, 100%y, True)
Dim layerBrush As BCBrush = bc.CreateBrushFromBitmap(layerImg)

bc.Initialize(100%x, 100%y)
layerPath.Initialize(0, 0).LineTo(0, 16%y).LineTo(20%x, 22%y).LineTo(80%x, 22%y).LineTo(100%x, 16%y).LineTo(100%x, 0).LineTo(0, 0)
bc.DrawPath2(layerPath, layerBrush, True, 0)

Activity.SetBackgroundImage(bc.Bitmap)

Can you give me a hint how to use BC.DrawArc in this context ?

 

[Erel]

Can you upload the brush bitmap?

 

[Sorin Pohontu]

Hello,

I have attached, but it's just a background layer, you can use any image (PNG, JPG) ...

 

[Erel]

Sub Activity_Create(FirstTime As Boolean)
    Dim bc As BitmapCreator
    Dim layerPath As BCPath
    Dim layerImg As B4XBitmap = xui.LoadBitmapResize(File.DirAssets, "layer_0.png", 100%x, 100%y, False) 'don't keep aspect ratio or there will be holes in the brush
    bc.Initialize(100%x, 100%y)
    Dim layerBrush As BCBrush = bc.CreateBrushFromBitmap(layerImg)
    layerPath.Initialize(0, 0).LineTo(0, 16%y).LineTo(20%x, 22%y).LineTo(80%x, 22%y).LineTo(100%x, 16%y).LineTo(100%x, 0).LineTo(0, 0)
    bc.DrawPath2(layerPath, layerBrush, True, 0)
    bc.DrawArc(35%x, 22%y, 10%x, xui.Color_Transparent, True, 0, 180, 180)
    bc.DrawArc(65%x, 22%y, 10%x, xui.Color_Transparent, True, 0, 180, 180)
    Activity.SetBackgroundImage(bc.Bitmap)
End Sub

 

[Sorin Pohontu]

Thanks Erel.

It seems that I do have one more issue: there are 3 layers created with BCPath, the one with arcs is on top. Creating the arcs as in your code will make all brushes transparent.

Do you have a hint for that ?

Thanks again.

 

[Erel]

Use two ImageViews for that, one above the other.

 

[Sorin Pohontu]

Hi Erele,

I'm sure I can find a solution, but I'm sure that adding BCPath.arcTo will help developers


Thanks once again Erel.