PureBasic Forums - English

Posted: **Sun Mar 10, 2024 5:41 pm**

I fail to understand why this isnt working:

I make a CreateImage() in procedure: MaakPolygonTexturesInAlleKleuren(), in StartVectorDrawing() i try to use that image in VectorSourceImage()
but nothing is there. if i load a image (see comments in code) then it works perfectly.

What do i miss here?

code:

Code: Select all

Enumeration
  #Mainwindow
  #canvas
  #image1
  
  #IMAGE_Polygon_Fill_SchuineStreep_Groen
  
EndEnumeration  



Procedure MaakPolygonTexturesInAlleKleuren()
  
  If CreateImage(#IMAGE_Polygon_Fill_SchuineStreep_Groen, 30, 30, 32, #PB_Image_Transparent) And StartDrawing(ImageOutput(#IMAGE_Polygon_Fill_SchuineStreep_Groen))
    
    Box(0, 0, 20, 20, RGBA(100,100,100,255))
    
    StopDrawing()
  EndIf
  
EndProcedure





If OpenWindow(#Mainwindow, 0, 0, 400, 200, "VectorDrawing", #PB_Window_SystemMenu | #PB_Window_ScreenCentered)
  
  LoadImage(#image1, #PB_Compiler_Home + "examples/Sources/Data/PureBasicLogo.bmp")
  
  MaakPolygonTexturesInAlleKleuren()
  
  CanvasGadget(#canvas, 0, 0, 400, 200)
  
  
  
  If StartVectorDrawing(CanvasVectorOutput(#canvas))

    x = 10
    y = 10
    
    MovePathCursor(x, y) ; start
    AddPathLine(x + 150, y, #PB_Path_Default)
    AddPathLine(x + 150, y + 100, #PB_Path_Default)
    AddPathLine(x + 100, y + 100, #PB_Path_Default)
    AddPathLine(x + 100, y + 150, #PB_Path_Default)
    AddPathLine(x, y + 150, #PB_Path_Default)
    AddPathLine(x, y, #PB_Path_Default)

    
    VectorSourceColor(RGBA(255, 0, 0, 255))
    StrokePath(5, #PB_Path_RoundEnd | #PB_Path_Preserve)
    
    ; doesnt work
    VectorSourceImage(ImageID(#IMAGE_Polygon_Fill_SchuineStreep_Groen), 255, 30, 30, #PB_VectorImage_Repeat)
    
    ; works
    ;VectorSourceImage(ImageID(#image1), 255, ImageWidth(#image1), ImageHeight(#image1), #PB_VectorImage_Repeat)
    
    
    FillPath()
    StrokePath(2)
    
    StopVectorDrawing()
  EndIf
  
  
  
  Repeat
    Event = WaitWindowEvent()
  Until Event = #PB_Event_CloseWindow
EndIf

Posted: **Sun Mar 10, 2024 5:52 pm**

The default drawing mode doesn't operate on the alpha channel (see the documentaion).

Add the following to your MakePolygonTextures...() function, just before drawing the box:

Code: Select all

DrawingMode(#PB_2DDrawing_AllChannels)

Posted: **Sun Mar 10, 2024 5:58 pm**

It finally works, Thank you!

PureBasic Forums - English

CreateImage() for using in VectorSourceImage() doesnt work

CreateImage() for using in VectorSourceImage() doesnt work

Re: CreateImage() for using in VectorSourceImage() doesnt work

Re: CreateImage() for using in VectorSourceImage() doesnt work