[Gambas-user] Why is this code running twice?
Fernando Cabral
fernandojosecabral at ...626...
Wed Aug 2 03:38:33 CEST 2017
I am trying to create a sundial faceplate. I took the analogic clock,
discarded what I did not need and thought I was ready to work on the
calculations and drawing of the hour angles.
Nevertheless, I am mystified by two things I can't understand:
a) The code produces a loop I can't see why (I am not referring to the FOR
loop)
b) I can't modify the drawing area dimensions ( dwgArea.width = 800 does
not work)
Besides, I have a question: when a drawing area is created, it (0,0)
supposed to be the central point?
The code follows:
*Private Const W As Integer = 2048Private Const H As Integer = 2048Public
Sub DwgArea_Draw() Dim angle As Float Dim eScale As Float Dim i As
Integer Print "Executing" & Now dwgArea.width = 800 ' does nothing
dwgArea.Height = 1000 ' does nothing Print dwgArea.width; dwgArea.Height
Paint.Translate(dwgArea.W / 2, dwgArea.H / 2) Paint.Brush =
Paint.Color(Color.SetAlpha(Color.Red, 128)) Paint.LineWidth = 1 For i
= -15 To 195 Step 15 angle = Rad(CFloat(i)) Paint.MoveTo(0, 0)
Paint.LineTo(Cos(angle) * W / 2, Sin(angle) * H / 2) Paint.Stroke
Paint.Fill NextEnd*
--
Fernando Cabral
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