[bmx] RenderState.Push() + Pop() Methods by sswift [ 1+ years ago ]

Started by BlitzBot, June 29, 2017, 00:28:39

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BlitzBot

June 29, 2017, 00:28:39
Title : RenderState.Push() + Pop() Methods
Author : sswift
Posted : 1+ years ago

Description : Push and pop the current render state off a stack!  Saves and restores all render parameters.  Scale, rotation, alpha, color, etc!

Code :
Code (blitzmax) Select
Type RenderState

Global RenderStateList:TList = CreateList()

Field Alpha#
Field Blend
Field ClsColor_R, ClsColor_G, ClsColor_B
Field Color_R, Color_G, Color_B
Field Handle_X#, Handle_Y#
Field ImageFont:TImageFont
Field LineWidth#
Field MaskColor_R, MaskColor_G, MaskColor_B
Field Origin_X#, Origin_Y#
Field Rotation#
Field Scale_X#, Scale_Y#
Field Viewport_X, Viewport_Y, Viewport_Width, Viewport_Height


' -------------------------------------------------------------------------------------------------------------------------------------------------------
' These methods allow you to save and restore the current render settings
'
' Each time you call the push method, the current state is placed on the stack.
' Each time you call the pop method, the last state placed on the stack is restored and removed from the stack.
' -------------------------------------------------------------------------------------------------------------------------------------------------------


Function Push()

Local RS:RenderState = New RenderState

RS.Alpha# = GetAlpha#()
RS.Blend  = GetBlend()
GetClsColor(RS.ClsColor_R, RS.ClsColor_G, RS.ClsColor_B)
GetColor(RS.Color_R, RS.Color_G, RS.Color_B)
GetHandle(RS.Handle_X#, RS.Handle_Y#)
RS.ImageFont = GetImageFont()
RS.LineWidth# = GetLineWidth#()
GetMaskColor(RS.MaskColor_R, RS.MaskColor_G, RS.MaskColor_B)
GetOrigin(RS.Origin_X#, RS.Origin_Y#)
RS.Rotation# = GetRotation#()
GetScale(RS.Scale_X#, RS.Scale_Y#)
GetViewport(RS.Viewport_X, RS.Viewport_Y, RS.Viewport_Width, RS.Viewport_Height)

RenderStateList.AddLast(RS)

End Function


Function Pop()

Local RS:RenderState = RenderState(RenderStateList.RemoveLast())

SetAlpha(RS.Alpha#)
SetBlend(RS.Blend)
SetClsColor(RS.ClsColor_R, RS.ClsColor_G, RS.ClsColor_B)
SetColor(RS.Color_R, RS.Color_G, RS.Color_B)
SetHandle(RS.Handle_X#, RS.Handle_Y#)
SetImageFont(RS.ImageFont)
SetLineWidth(RS.LineWidth#)
SetMaskColor(RS.MaskColor_R, RS.MaskColor_G, RS.MaskColor_B)
SetOrigin(RS.Origin_X#, RS.Origin_Y#)
SetRotation(RS.Rotation#)
SetScale(RS.Scale_X#, RS.Scale_Y#)
SetViewport(RS.Viewport_X, RS.Viewport_Y, RS.Viewport_Width, RS.Viewport_Height)

End Function


End Type

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