Je travaille actuellement sur un logiciel de plan (2d -> 3d) en Pb, je met à votre disposition ce petit bout de code pour la gestion d'un dessin en mm avec grille magnétique et zoom
- CTRL + molette pour augmenté ou diminué le zoom
Code : Tout sélectionner
; ********************************************************************************************************
; AUTHOR : MICRODEVWEB
; PROJECT : TUTO DRAW
; DESIGNED WITH : PB 5.70
; ********************************************************************************************************
EnableExplicit
Enumeration
#MAIN_FORM
#CANVAS
EndEnumeration
Structure pos
x.l
y.l
w.l
h.l
EndStructure
; constantes
#BACK_COLOR = $FFAAE8EE
#GRID_COLOR = $8213458B
#CURSOR_COLOR = $F70000FF
#GRID_SIZE = 50 ; mm
#GRID_SENSITIVE = 20.0
#BOX_WIDTH = 1000 ; mm
#BOX_HEIGHT = 100 ; mm
; Variables globales
Global gZoom.f = 0.2 ; facteur de zoom
Global gMX,gMY ; position de la souris
Procedure coordinatesTo_MM(x,y,*x,*y)
PokeL(*x,ConvertCoordinateX(x,y,#PB_Coordinate_Device,#PB_Coordinate_User))
PokeL(*Y,ConvertCoordinateY(x,y,#PB_Coordinate_Device,#PB_Coordinate_User))
EndProcedure
Procedure coordinatesTo_MM_bis(x,y,*x,*y)
StartVectorDrawing(CanvasVectorOutput(#CANVAS,#PB_Unit_Millimeter))
ScaleCoordinates(gZoom,gZoom) ; le facteur de zoom
PokeL(*x,ConvertCoordinateX(x,y,#PB_Coordinate_Device,#PB_Coordinate_User))
PokeL(*Y,ConvertCoordinateY(x,y,#PB_Coordinate_Device,#PB_Coordinate_User))
StopVectorDrawing()
EndProcedure
Procedure drawGrid()
; dessin de la grille
Protected r = #GRID_SIZE,c = #GRID_SIZE
Protected w,h
; on transform la taille du canvas en mm
coordinatesTo_MM(GadgetWidth(#CANVAS),GadgetHeight(#CANVAS),@w,@h)
; on efface
VectorSourceColor(#BACK_COLOR)
FillVectorOutput()
; dessin des colonnes
While c < w
MovePathCursor(c,0)
AddPathLine(c,h)
c + #GRID_SIZE
Wend
; dessin des lignes
While r < h
MovePathCursor(0,r)
AddPathLine(w,r)
r + #GRID_SIZE
Wend
VectorSourceColor(#GRID_COLOR)
StrokePath(0.2) ; Attention en mm
EndProcedure
Procedure drawCursor()
Protected w,h
; on transform la taille du canvas en mm
coordinatesTo_MM(GadgetWidth(#CANVAS),GadgetHeight(#CANVAS),@w,@h)
; horizontal
MovePathCursor(0,gMY)
AddPathLine(w,gMY)
; vertical
MovePathCursor(gMX,0)
AddPathLine(gMx,h)
VectorSourceColor(#CURSOR_COLOR)
StrokePath(0.3) ; Attention en mm
EndProcedure
Procedure manageMagnet()
; gestion de l'aimantation
Protected x,y,lM.f = #GRID_SIZE - #GRID_SENSITIVE,LP.f = #GRID_SENSITIVE
If Mod(gMX,#GRID_SIZE) >= LM
x = Round(gMX/#GRID_SIZE,#PB_Round_Up) * #GRID_SIZE
gMX = x
ElseIf Mod(gMX,#GRID_SIZE) <= LP
x = Round(gMX/#GRID_SIZE,#PB_Round_Nearest) * #GRID_SIZE
gMX = x
EndIf
If Mod(gMY,#GRID_SIZE) >= LM
Y = Round(gMY/#GRID_SIZE,#PB_Round_Up) * #GRID_SIZE
gMY = y
ElseIf Mod(gMY,#GRID_SIZE) <= LP
Y = Round(gMY/#GRID_SIZE,#PB_Round_Nearest) * #GRID_SIZE
gMY = y
EndIf
EndProcedure
Procedure draw()
; dessin du canvas en mm
StartVectorDrawing(CanvasVectorOutput(#CANVAS,#PB_Unit_Millimeter))
ScaleCoordinates(gZoom,gZoom) ; le facteur de zoom
drawGrid() ; dessin de la grille
drawCursor() ; dessin du curseur
StopVectorDrawing()
EndProcedure
Procedure evExit()
End
EndProcedure
Procedure evCanvas()
Select EventType()
Case #PB_EventType_MouseWheel
; gestion du zoom uniquement si touche controle appuyée
If GetGadgetAttribute(#CANVAS,#PB_Canvas_Modifiers) = #PB_Canvas_Control
If GetGadgetAttribute(#CANVAS,#PB_Canvas_WheelDelta) < 1
If gZoom > 0.03
gZoom -0.01
EndIf
Else
If gZoom <100
gZoom +0.01
EndIf
EndIf
EndIf
draw()
Case #PB_EventType_MouseMove
; on mémorise la position de la souris
coordinatesTo_MM_bis(GetGadgetAttribute(#CANVAS,#PB_Canvas_MouseX),
GetGadgetAttribute(#CANVAS,#PB_Canvas_MouseY),
@gMX,@gMY)
manageMagnet()
draw()
EndSelect
EndProcedure
Procedure openForm()
Protected flags = #PB_Window_ScreenCentered|#PB_Window_SystemMenu
OpenWindow(#MAIN_FORM,0,0,800,600,"Tuto draw in mm",flags)
CanvasGadget(#CANVAS,0,0,800,600,#PB_Canvas_Keyboard) ; important pour lire le delata wheel
; mise en place des callback
BindEvent(#PB_Event_CloseWindow,@evExit(),#MAIN_FORM)
BindGadgetEvent(#CANVAS,@evCanvas())
draw()
EndProcedure
openForm()
; main loop
Repeat : WaitWindowEvent() : ForEver
