PureBasic Forums - English

Posted: **Sat Nov 24, 2007 10:49 pm**

Hey guys,

Since I don't have enough experience (yet) with PB maybe somebody can help me:

Is it possible to draw a line with 1 sprite ?

Let me explain, with an example:
I have a square sprite (128x128).
I clip it in 128 sprites of each: 1px height & 128px width

Now I would like to draw a line with each sprite from X1,Y1 to X2,Y2

Is that possible or has somebody tried this ?

All help is welcome.

Regards,
DeXtr0

Posted: **Sun Nov 25, 2007 9:21 am**

Hello,

I made a little example for you.
Maybe its not the best solution. But it shows the principle.

Code: Select all

; English forum: 
; Author: Hroudtwolf
; Date: 25. November 2007
; OS: Windows, Linux, Mac
; Demo: Yes

Macro DoOrDie (_DO_ , _DIEWITH_)
   If Not (_DO_)
      MessageRequester ("Error"  , _DIEWITH_)
      End
   EndIf
EndMacro

Declare DrawSpriteLine (lX1.l , lY1.l , lX2.l , lY2.l)

Define.l     lEvent
Define.l     lWndID
Define.POINT CornerX

DoOrDie (InitSprite () , "Couldn't initiate DirecX.")

lWndID = OpenWindow (#PB_Any , #PB_Ignore , #PB_Ignore , 800 , 600 , "Line with sprites example" , $CA0001)
DoOrDie (lWndID , "Not enough RAM available.")

DoOrDie (OpenWindowedScreen (WindowID (lWndID) , 0 , 0 , 800 , 600 , #False , 0 , 0) , "DirectX fullscreen not possible.")

Repeat
   Repeat
      lEvent = WindowEvent ()
      Select lEvent
         Case #PB_Event_CloseWindow
         End
      EndSelect
   Until lEvent = #Null
   
   ClearScreen ($590201)
   
   
   DrawSpriteLine (100, 100 , 500 , 500)
   DrawSpriteLine (600, 100 , 100 , 500)
   
   FlipBuffers ()
   Delay (1)
ForEver

Procedure DrawSpriteLine (lX1.l , lY1.l , lX2.l , lY2.l)
   Protected lLineX                  .l = lX1
   Protected lLineY                  .l = lY1
   Protected lOpX                    .l = 0
   Protected lOpY                    .l = 0
   Static    lDrawSpriteLine_SpriteID.l
   
   If Not lDrawSpriteLine_SpriteID
      lDrawSpriteLine_SpriteID = CreateSprite (#PB_Any , 2 , 2)
      If StartDrawing (SpriteOutput (lDrawSpriteLine_SpriteID))
         Box (0 , 0 , 2 , 2 , $FFFFFF)
         StopDrawing ()
      EndIf
   EndIf
   
   If lLineX > lX2 : lOpX = -1 : ElseIf lLineX < lX2 : lOpX = 1 : EndIf
   If lLineY > lY2 : lOpY = -1 : ElseIf lLineY < lY2 : lOpY = 1 : EndIf

   While lLineX <> lX2 And lLineY <> lY2
      DisplaySprite (lDrawSpriteLine_SpriteID  , lLineX , lLineY)
      If Not (lLineX = lX2) : lLineX + lOpX : EndIf
      If Not (lLineY = lY2) : lLineY + lOpY : EndIf
   Wend
   
   ProcedureReturn #Null
EndProcedure

Best regards

Wolf

Posted: **Sun Nov 25, 2007 3:52 pm**

Whohooo cool Wolf,

Thanks you very much !
I'll check it out !

Regards,
DeX

PureBasic Forums - English

How to draw a line with a sprite

How to draw a line with a sprite