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OK, I'm a little stumped, I'm trying to use Steve's circle drawing routine from a while back, to draw a red circle and a blue circle, and print on the screen the x,y, radius of the circle and the color. It's drawing the red circle, but not the blue one, and no text is appearing. If I could get a 2nd set of eyes to expose my foolishness, that would be most appreciated!
Code: (Select All) ' Circle code by SMcNeill from:
' Circles and Ellipses(Tilt and Fill)
' https://qb64phoenix.com/forum/showthread.php?tid=1806
' CONSTANTS
Const FALSE = 0
Const TRUE = Not FALSE
' COLORS
Dim Shared cRed~&
Dim Shared cOrangeRed~&
Dim Shared cDarkOrange~&
Dim Shared cOrange~&
Dim Shared cGold~&
Dim Shared cYellow~&
Dim Shared cOliveDrab1~&
Dim Shared cLime~&
Dim Shared cMediumSpringGreen~&
Dim Shared cSpringGreen~&
Dim Shared cCyan~&
Dim Shared cDeepSkyBlue~&
Dim Shared cDodgerBlue~&
Dim Shared cSeaBlue~&
Dim Shared cBlue~&
Dim Shared cBluePurple~&
Dim Shared cDeepPurple~&
Dim Shared cPurple~&
Dim Shared cPurpleRed~&
Dim Shared cDarkRed~&
Dim Shared cBrickRed~&
Dim Shared cDarkGreen~&
Dim Shared cGreen~&
Dim Shared cOliveDrab~&
Dim Shared cLightPink~&
Dim Shared cHotPink~&
Dim Shared cDeepPink~&
Dim Shared cMagenta~&
Dim Shared cBlack~&
Dim Shared cDimGray~&
Dim Shared cGray~&
Dim Shared cDarkGray~&
Dim Shared cSilver~&
Dim Shared cLightGray~&
Dim Shared cGainsboro~&
Dim Shared cWhiteSmoke~&
Dim Shared cWhite~&
Dim Shared cDarkBrown~&
Dim Shared cLightBrown~&
Dim Shared cKhaki~&
Dim Shared cEmpty~&
Dim Shared iScreenWidth%
Dim Shared iScreenHeight%
' SET SHARED VALUES
cRed = _RGB32(255, 0, 0)
cOrangeRed = _RGB32(255, 69, 0)
cDarkOrange = _RGB32(255, 140, 0)
cOrange = _RGB32(255, 165, 0)
cGold = _RGB32(255, 215, 0)
cYellow = _RGB32(255, 255, 0)
cOliveDrab1 = _RGB32(192, 255, 62)
cLime = _RGB32(0, 255, 0)
cMediumSpringGreen = _RGB32(0, 250, 154)
cSpringGreen = _RGB32(0, 255, 160)
cCyan = _RGB32(0, 255, 255)
cDeepSkyBlue = _RGB32(0, 191, 255)
cDodgerBlue = _RGB32(30, 144, 255)
cSeaBlue = _RGB32(0, 64, 255)
cBlue = _RGB32(0, 0, 255)
cBluePurple = _RGB32(64, 0, 255)
cDeepPurple = _RGB32(96, 0, 255)
cPurple = _RGB32(128, 0, 255)
cPurpleRed = _RGB32(128, 0, 192)
cDarkRed = _RGB32(160, 0, 64)
cBrickRed = _RGB32(192, 0, 32)
cDarkGreen = _RGB32(0, 100, 0)
cGreen = _RGB32(0, 128, 0)
cOliveDrab = _RGB32(107, 142, 35)
cLightPink = _RGB32(255, 182, 193)
cHotPink = _RGB32(255, 105, 180)
cDeepPink = _RGB32(255, 20, 147)
cMagenta = _RGB32(255, 0, 255)
cBlack = _RGB32(0, 0, 0)
cDimGray = _RGB32(105, 105, 105)
cGray = _RGB32(128, 128, 128)
cDarkGray = _RGB32(169, 169, 169)
cSilver = _RGB32(192, 192, 192)
cLightGray = _RGB32(211, 211, 211)
cGainsboro = _RGB32(220, 220, 220)
cWhiteSmoke = _RGB32(245, 245, 245)
cWhite = _RGB32(255, 255, 255)
cDarkBrown = _RGB32(128, 64, 0)
cLightBrown = _RGB32(196, 96, 0)
cKhaki = _RGB32(240, 230, 140)
cEmpty = _RGB32(0, 0, 0, 0) ' _RGBA(red, green, blue, alpha) where alpha& specifies the alpha component transparency value from 0 (fully transparent) to 255 (opaque).
iScreenWidth% = 1024 ' 800
iScreenHeight% = 768 ' 600
' LOCAL VARIABLES
Dim iX As Integer
Dim iY As Integer
Dim iR As Integer
Dim iC As _Unsigned Long
Dim sT As String
' CLEAR SCREEN & DRAW CIRCLES
Screen _NewImage(iScreenWidth%, iScreenHeight%, 32)
'Screen _NewImage(_DesktopWidth, _DesktopHeight, 32)
_ScreenMove 0, 0
_Dest 0: Cls , cBlack
'_Display ' update screen with changes & wait for next update
'_AutoDisplay ' RETURN TO AUTODISPLAY
Color , cBlack: Cls
Color cWhite, cEmpty
Print "X Y Radius Color"
iX = 200 ' iScreenWidth% \ 2
iY = 200 ' iScreenHeight% \ 2
iR = 50
iC = cBlue
sT = "blue"
DrawNext iX, iY, iR, iC, sT
iX = 300 ' iScreenWidth% \ 4
iY = 300 ' iScreenHeight% \ 4
iR = 50
iC = cRed
sT = "red"
DrawNext iX, iY, iR, iC, sT
'Call EllipseFill(550, 100, 150, 75, TransBlue)
'Call EllipseFill(570, 120, 150, 75, TransGreen)
'Call EllipseTilt(200, 400, 150, 75, 0, TransGreen)
'Call EllipseTilt(220, 420, 150, 75, 3.14 / 4, TransRed)
'Call EllipseTiltFill(0, 550, 400, 150, 75, 3.14 / 6, TransRed)
'Call EllipseTiltFill(0, 570, 420, 150, 75, 3.14 / 4, TransGreen)
'sleep
End
' /////////////////////////////////////////////////////////////////////////////
Sub DrawNext (x%, y%, r%, c~&, text$)
Color cCyan, cEmpty
Print Left$(_Trim$(Str$(x%)) + " ", 3) + " " + Left$(_Trim$(Str$(y%)) + " ", 3) + " " + Left$(_Trim$(Str$(r%)) + " ", 6) + " " + text$
Call CircleFill(x%, y%, r%, c~&)
End Sub ' DrawNext
' /////////////////////////////////////////////////////////////////////////////
Sub CircleFill (CX As Integer, CY As Integer, R As Integer, C As _Unsigned Long)
' CX = center x coordinate
' CY = center y coordinate
' R = radius
' C = fill color
Dim Radius As Integer, RadiusError As Integer
Dim X As Integer, Y As Integer
Radius = Abs(R)
RadiusError = -Radius
X = Radius
Y = 0
If Radius = 0 Then PSet (CX, CY), C: Exit Sub
Line (CX - X, CY)-(CX + X, CY), C, BF
While X > Y
RadiusError = RadiusError + Y * 2 + 1
If RadiusError >= 0 Then
If X <> Y + 1 Then
Line (CX - Y, CY - X)-(CX + Y, CY - X), C, BF
Line (CX - Y, CY + X)-(CX + Y, CY + X), C, BF
End If
X = X - 1
RadiusError = RadiusError - X * 2
End If
Y = Y + 1
Line (CX - X, CY - Y)-(CX + X, CY - Y), C, BF
Line (CX - X, CY + Y)-(CX + X, CY + Y), C, BF
Wend
End Sub ' CircleFill
' /////////////////////////////////////////////////////////////////////////////
Sub EllipseFill (CX As Integer, CY As Integer, a As Integer, b As Integer, C As _Unsigned Long)
' CX = center x coordinate
' CY = center y coordinate
' a = semimajor axis
' b = semiminor axis
' C = fill color
If a = 0 Or b = 0 Then Exit Sub
Dim h2 As _Integer64
Dim w2 As _Integer64
Dim h2w2 As _Integer64
Dim x As Integer
Dim y As Integer
w2 = a * a
h2 = b * b
h2w2 = h2 * w2
Line (CX - a, CY)-(CX + a, CY), C, BF
Do While y < b
y = y + 1
x = Sqr((h2w2 - y * y * w2) \ h2)
Line (CX - x, CY + y)-(CX + x, CY + y), C, BF
Line (CX - x, CY - y)-(CX + x, CY - y), C, BF
Loop
End Sub ' EllipseFill
' /////////////////////////////////////////////////////////////////////////////
Sub EllipseTilt (CX, CY, a, b, ang, C As _Unsigned Long)
' CX = center x coordinate
' CY = center y coordinate
' a = semimajor axis
' b = semiminor axis
' ang = clockwise orientation of semimajor axis in radians (0 default)
' C = fill color
For k = 0 To 6.283185307179586 + .025 Step .025
i = a * Cos(k) * Cos(ang) + b * Sin(k) * Sin(ang)
j = -a * Cos(k) * Sin(ang) + b * Sin(k) * Cos(ang)
i = i + CX
j = -j + CY
If k <> 0 Then
Line -(i, j), C
Else
PSet (i, j), C
End If
Next
End Sub ' EllipseTilt
' /////////////////////////////////////////////////////////////////////////////
Sub EllipseTiltFill (destHandle&, CX, CY, a, b, ang, C As _Unsigned Long)
' destHandle& = destination handle
' CX = center x coordinate
' CY = center y coordinate
' a = semimajor axis
' b = semiminor axis
' ang = clockwise orientation of semimajor axis in radians (0 default)
' C = fill color
Dim max As Integer, mx2 As Integer, i As Integer, j As Integer
Dim prc As _Unsigned Long
Dim D As Integer, S As Integer
D = _Dest: S = _Source
prc = _RGB32(255, 255, 255, 255)
If a > b Then max = a + 1 Else max = b + 1
mx2 = max + max
tef& = _NewImage(mx2, mx2)
_Dest tef&
_Source tef&
For k = 0 To 6.283185307179586 + .025 Step .025
i = max + a * Cos(k) * Cos(ang) + b * Sin(k) * Sin(ang)
j = max + a * Cos(k) * Sin(ang) - b * Sin(k) * Cos(ang)
If k <> 0 Then
Line (lasti, lastj)-(i, j), prc
Else
PSet (i, j), prc
End If
lasti = i: lastj = j
Next
Dim xleft(mx2) As Integer, xright(mx2) As Integer, x As Integer, y As Integer
For y = 0 To mx2
x = 0
While Point(x, y) <> prc And x < mx2
x = x + 1
Wend
xleft(y) = x
While Point(x, y) = prc And x < mx2
x = x + 1
Wend
While Point(x, y) <> prc And x < mx2
x = x + 1
Wend
If x = mx2 Then xright(y) = xleft(y) Else xright(y) = x
Next
_Dest destHandle&
For y = 0 To mx2
If xleft(y) <> mx2 Then Line (xleft(y) + CX - max, y + CY - max)-(xright(y) + CX - max, y + CY - max), C, BF
Next
_Dest D: _Dest S
_FreeImage tef&
End Sub ' EllipseTiltFill
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This one is simple. You're using two different variables of the same name and different types. 
Code: (Select All) Dim Shared cBlue As _Unsigned Long
In your program, you're using the variable named cBlue... But you DIM SHARED cBlue~&.... those aren't the same variables.
cBlue defaults to a single. cBlue~& is an unsigned long.
singles don't carry blue transparency values, so they get rounded to 0.
Posts: 720
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(09-20-2024, 10:51 PM)SMcNeill Wrote: This one is simple. You're using two different variables of the same name and different types.
Code: (Select All) Dim Shared cBlue As _Unsigned Long
In your program, you're using the variable named cBlue... But you DIM SHARED cBlue~&.... those aren't the same variables.
cBlue defaults to a single. cBlue~& is an unsigned long.
singles don't carry blue transparency values, so they get rounded to 0. Thank you sir.
For some crazy reason, I was under the impression that once you DIMmed a variable like
dim x$
anytime you refer to it, the prefix can be left off, ie
x = "hello"
Apparently I was under a delusion. Thanks again for clearing that up, that is probably pretty important to know!
Posts: 720
Threads: 103
Joined: Apr 2022
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(09-20-2024, 10:51 PM)SMcNeill Wrote: This one is simple. You're using two different variables of the same name and different types.
Code: (Select All) Dim Shared cBlue As _Unsigned Long
In your program, you're using the variable named cBlue... But you DIM SHARED cBlue~&.... those aren't the same variables.
cBlue defaults to a single. cBlue~& is an unsigned long.
singles don't carry blue transparency values, so they get rounded to 0. Actually, I think I recall where the delusion came from... at some point someone said that if you declare a FUNCTION with a type, ie
Code: (Select All) Function MyFunction~& ( <params here/> )
MyFunction~& = <some value/>
End Function
that you don't need the type suffix when you call it, so that calling
Code: (Select All) MyFunction~&(a, b, c)
gets the same value as
Code: (Select All) MyFunction(a, b, c)
Whether that's true, I have no idea!
Posts: 720
Threads: 103
Joined: Apr 2022
Reputation:
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(09-20-2024, 10:51 PM)SMcNeill Wrote: This one is simple. You're using two different variables of the same name and different types.
Code: (Select All) Dim Shared cBlue As _Unsigned Long
In your program, you're using the variable named cBlue... But you DIM SHARED cBlue~&.... those aren't the same variables.
cBlue defaults to a single. cBlue~& is an unsigned long.
singles don't carry blue transparency values, so they get rounded to 0. I got it working - thanks!
Code: (Select All) ' Circle code by SMcNeill from:
' Circles and Ellipses(Tilt and Fill)
' https://qb64phoenix.com/forum/showthread.php?tid=1806
' CONSTANTS
Const FALSE = 0
Const TRUE = Not FALSE
' COLORS
Dim Shared cRed~&
Dim Shared cOrangeRed~&
Dim Shared cDarkOrange~&
Dim Shared cOrange~&
Dim Shared cGold~&
Dim Shared cYellow~&
Dim Shared cOliveDrab1~&
Dim Shared cLime~&
Dim Shared cMediumSpringGreen~&
Dim Shared cSpringGreen~&
Dim Shared cCyan~&
Dim Shared cDeepSkyBlue~&
Dim Shared cDodgerBlue~&
Dim Shared cSeaBlue~&
Dim Shared cBlue~&
Dim Shared cBluePurple~&
Dim Shared cDeepPurple~&
Dim Shared cPurple~&
Dim Shared cPurpleRed~&
Dim Shared cDarkRed~&
Dim Shared cBrickRed~&
Dim Shared cDarkGreen~&
Dim Shared cGreen~&
Dim Shared cOliveDrab~&
Dim Shared cLightPink~&
Dim Shared cHotPink~&
Dim Shared cDeepPink~&
Dim Shared cMagenta~&
Dim Shared cBlack~&
Dim Shared cDimGray~&
Dim Shared cGray~&
Dim Shared cDarkGray~&
Dim Shared cSilver~&
Dim Shared cLightGray~&
Dim Shared cGainsboro~&
Dim Shared cWhiteSmoke~&
Dim Shared cWhite~&
Dim Shared cDarkBrown~&
Dim Shared cLightBrown~&
Dim Shared cKhaki~&
Dim Shared cEmpty~&
Dim Shared iScreenWidth%
Dim Shared iScreenHeight%
' SET SHARED VALUES
cRed~& = _RGB32(255, 0, 0)
cOrangeRed~& = _RGB32(255, 69, 0)
cDarkOrange~& = _RGB32(255, 140, 0)
cOrange~& = _RGB32(255, 165, 0)
cGold~& = _RGB32(255, 215, 0)
cYellow~& = _RGB32(255, 255, 0)
cOliveDrab1~& = _RGB32(192, 255, 62)
cLime~& = _RGB32(0, 255, 0)
cMediumSpringGreen~& = _RGB32(0, 250, 154)
cSpringGreen~& = _RGB32(0, 255, 160)
cCyan~& = _RGB32(0, 255, 255)
cDeepSkyBlue~& = _RGB32(0, 191, 255)
cDodgerBlue~& = _RGB32(30, 144, 255)
cSeaBlue~& = _RGB32(0, 64, 255)
cBlue~& = _RGB32(0, 0, 255)
cBluePurple~& = _RGB32(64, 0, 255)
cDeepPurple~& = _RGB32(96, 0, 255)
cPurple~& = _RGB32(128, 0, 255)
cPurpleRed~& = _RGB32(128, 0, 192)
cDarkRed~& = _RGB32(160, 0, 64)
cBrickRed~& = _RGB32(192, 0, 32)
cDarkGreen~& = _RGB32(0, 100, 0)
cGreen~& = _RGB32(0, 128, 0)
cOliveDrab~& = _RGB32(107, 142, 35)
cLightPink~& = _RGB32(255, 182, 193)
cHotPink~& = _RGB32(255, 105, 180)
cDeepPink~& = _RGB32(255, 20, 147)
cMagenta~& = _RGB32(255, 0, 255)
cBlack~& = _RGB32(0, 0, 0)
cDimGray~& = _RGB32(105, 105, 105)
cGray~& = _RGB32(128, 128, 128)
cDarkGray~& = _RGB32(169, 169, 169)
cSilver~& = _RGB32(192, 192, 192)
cLightGray~& = _RGB32(211, 211, 211)
cGainsboro~& = _RGB32(220, 220, 220)
cWhiteSmoke~& = _RGB32(245, 245, 245)
cWhite~& = _RGB32(255, 255, 255)
cDarkBrown~& = _RGB32(128, 64, 0)
cLightBrown~& = _RGB32(196, 96, 0)
cKhaki~& = _RGB32(240, 230, 140)
cEmpty~& = _RGB32(0, 0, 0, 0) ' _RGBA(red, green, blue, alpha) where alpha& specifies the alpha component transparency value from 0 (fully transparent) to 255 (opaque).
iScreenWidth% = 1024 ' 800
iScreenHeight% = 768 ' 600
' LOCAL VARIABLES
Dim iX As Integer
Dim iY As Integer
Dim iR As Integer
Dim iC As _Unsigned Long
' CLEAR SCREEN & DRAW CIRCLES
Screen _NewImage(iScreenWidth%, iScreenHeight%, 32)
'Screen _NewImage(_DesktopWidth, _DesktopHeight, 32)
_ScreenMove 0, 0
_Dest 0: Cls , cBlack
'_Display ' update screen with changes & wait for next update
'_AutoDisplay ' RETURN TO AUTODISPLAY
Color , cBlack~&: Cls
Color cWhite~&, cEmpty~&
Print "X Y Radius Color"
iX = 200 ' iScreenWidth% \ 2
iY = 200 ' iScreenHeight% \ 2
iR = 50
iC = cBlue~&
DrawNext iX, iY, iR, iC
iX = 300 ' iScreenWidth% \ 4
iY = 300 ' iScreenHeight% \ 4
iR = 50
iC = cRed~&
DrawNext iX, iY, iR, iC
iX = 400 ' iScreenWidth% \ 4
iY = 300 ' iScreenHeight% \ 4
iR = 50
iC = cLime~&
DrawNext iX, iY, iR, iC
'Call EllipseFill(550, 100, 150, 75, TransBlue)
'Call EllipseFill(570, 120, 150, 75, TransGreen)
'Call EllipseTilt(200, 400, 150, 75, 0, TransGreen)
'Call EllipseTilt(220, 420, 150, 75, 3.14 / 4, TransRed)
'Call EllipseTiltFill(0, 550, 400, 150, 75, 3.14 / 6, TransRed)
'Call EllipseTiltFill(0, 570, 420, 150, 75, 3.14 / 4, TransGreen)
'sleep
End
' /////////////////////////////////////////////////////////////////////////////
Sub DrawNext (x%, y%, r%, c~&)
Color cCyan~&, cEmpty~&
Print Left$(_Trim$(Str$(x%)) + " ", 3) + " " + Left$(_Trim$(Str$(y%)) + " ", 3) + " " + Left$(_Trim$(Str$(r%)) + " ", 6) + " " + ColorToString$(c~&)
Call CircleFill(x%, y%, r%, c~&)
End Sub ' DrawNext
' /////////////////////////////////////////////////////////////////////////////
Sub CircleFill (CX As Integer, CY As Integer, R As Integer, C As _Unsigned Long)
' CX = center x coordinate
' CY = center y coordinate
' R = radius
' C = fill color
Dim Radius As Integer, RadiusError As Integer
Dim X As Integer, Y As Integer
Radius = Abs(R)
RadiusError = -Radius
X = Radius
Y = 0
If Radius = 0 Then PSet (CX, CY), C: Exit Sub
Line (CX - X, CY)-(CX + X, CY), C, BF
While X > Y
RadiusError = RadiusError + Y * 2 + 1
If RadiusError >= 0 Then
If X <> Y + 1 Then
Line (CX - Y, CY - X)-(CX + Y, CY - X), C, BF
Line (CX - Y, CY + X)-(CX + Y, CY + X), C, BF
End If
X = X - 1
RadiusError = RadiusError - X * 2
End If
Y = Y + 1
Line (CX - X, CY - Y)-(CX + X, CY - Y), C, BF
Line (CX - X, CY + Y)-(CX + X, CY + Y), C, BF
Wend
End Sub ' CircleFill
' /////////////////////////////////////////////////////////////////////////////
Sub EllipseFill (CX As Integer, CY As Integer, a As Integer, b As Integer, C As _Unsigned Long)
' CX = center x coordinate
' CY = center y coordinate
' a = semimajor axis
' b = semiminor axis
' C = fill color
If a = 0 Or b = 0 Then Exit Sub
Dim h2 As _Integer64
Dim w2 As _Integer64
Dim h2w2 As _Integer64
Dim x As Integer
Dim y As Integer
w2 = a * a
h2 = b * b
h2w2 = h2 * w2
Line (CX - a, CY)-(CX + a, CY), C, BF
Do While y < b
y = y + 1
x = Sqr((h2w2 - y * y * w2) \ h2)
Line (CX - x, CY + y)-(CX + x, CY + y), C, BF
Line (CX - x, CY - y)-(CX + x, CY - y), C, BF
Loop
End Sub ' EllipseFill
' /////////////////////////////////////////////////////////////////////////////
Sub EllipseTilt (CX, CY, a, b, ang, C As _Unsigned Long)
' CX = center x coordinate
' CY = center y coordinate
' a = semimajor axis
' b = semiminor axis
' ang = clockwise orientation of semimajor axis in radians (0 default)
' C = fill color
For k = 0 To 6.283185307179586 + .025 Step .025
i = a * Cos(k) * Cos(ang) + b * Sin(k) * Sin(ang)
j = -a * Cos(k) * Sin(ang) + b * Sin(k) * Cos(ang)
i = i + CX
j = -j + CY
If k <> 0 Then
Line -(i, j), C
Else
PSet (i, j), C
End If
Next
End Sub ' EllipseTilt
' /////////////////////////////////////////////////////////////////////////////
Sub EllipseTiltFill (destHandle&, CX, CY, a, b, ang, C As _Unsigned Long)
' destHandle& = destination handle
' CX = center x coordinate
' CY = center y coordinate
' a = semimajor axis
' b = semiminor axis
' ang = clockwise orientation of semimajor axis in radians (0 default)
' C = fill color
Dim max As Integer, mx2 As Integer, i As Integer, j As Integer
Dim prc As _Unsigned Long
Dim D As Integer, S As Integer
D = _Dest: S = _Source
prc = _RGB32(255, 255, 255, 255)
If a > b Then max = a + 1 Else max = b + 1
mx2 = max + max
tef& = _NewImage(mx2, mx2)
_Dest tef&
_Source tef&
For k = 0 To 6.283185307179586 + .025 Step .025
i = max + a * Cos(k) * Cos(ang) + b * Sin(k) * Sin(ang)
j = max + a * Cos(k) * Sin(ang) - b * Sin(k) * Cos(ang)
If k <> 0 Then
Line (lasti, lastj)-(i, j), prc
Else
PSet (i, j), prc
End If
lasti = i: lastj = j
Next
Dim xleft(mx2) As Integer, xright(mx2) As Integer, x As Integer, y As Integer
For y = 0 To mx2
x = 0
While Point(x, y) <> prc And x < mx2
x = x + 1
Wend
xleft(y) = x
While Point(x, y) = prc And x < mx2
x = x + 1
Wend
While Point(x, y) <> prc And x < mx2
x = x + 1
Wend
If x = mx2 Then xright(y) = xleft(y) Else xright(y) = x
Next
_Dest destHandle&
For y = 0 To mx2
If xleft(y) <> mx2 Then Line (xleft(y) + CX - max, y + CY - max)-(xright(y) + CX - max, y + CY - max), C, BF
Next
_Dest D: _Dest S
_FreeImage tef&
End Sub ' EllipseTiltFill
' /////////////////////////////////////////////////////////////////////////////
Function ColorToString$ (MyValue~&)
Dim Mystring As String
Select Case MyValue~&
Case cRed~&:
Mystring = "Red"
Case cOrangeRed~&:
Mystring = "OrangeRed"
Case cDarkOrange~&:
Mystring = "DarkOrange"
Case cOrange~&:
Mystring = "Orange"
Case cGold~&:
Mystring = "Gold"
Case cYellow~&:
Mystring = "Yellow"
Case cOliveDrab1~&:
Mystring = "OliveDrab1"
Case cLime~&:
Mystring = "Lime"
Case cMediumSpringGreen~&:
Mystring = "MediumSpringGreen"
Case cSpringGreen~&:
Mystring = "SpringGreen"
Case cCyan~&:
Mystring = "Cyan"
Case cDeepSkyBlue~&:
Mystring = "DeepSkyBlue"
Case cDodgerBlue~&:
Mystring = "DodgerBlue"
Case cSeaBlue~&:
Mystring = "SeaBlue"
Case cBlue~&:
Mystring = "Blue"
Case cBluePurple~&:
Mystring = "BluePurple"
Case cDeepPurple~&:
Mystring = "DeepPurple"
Case cPurple~&:
Mystring = "Purple"
Case cPurpleRed~&:
Mystring = "PurpleRed"
Case cDarkRed~&:
Mystring = "DarkRed"
Case cBrickRed~&:
Mystring = "BrickRed"
Case cDarkGreen~&:
Mystring = "DarkGreen"
Case cGreen~&:
Mystring = "Green"
Case cOliveDrab~&:
Mystring = "OliveDrab"
Case cLightPink~&:
Mystring = "LightPink"
Case cHotPink~&:
Mystring = "HotPink"
Case cDeepPink~&:
Mystring = "DeepPink"
Case cMagenta~&:
Mystring = "Magenta"
Case cBlack~&:
Mystring = "Black"
Case cDimGray~&:
Mystring = "DimGray"
Case cGray~&:
Mystring = "Gray"
Case cDarkGray~&:
Mystring = "DarkGray"
Case cSilver~&:
Mystring = "Silver"
Case cLightGray~&:
Mystring = "LightGray"
Case cGainsboro~&:
Mystring = "Gainsboro"
Case cWhiteSmoke~&:
Mystring = "WhiteSmoke"
Case cWhite~&:
Mystring = "White"
Case cDarkBrown~&:
Mystring = "DarkBrown"
Case cLightBrown~&:
Mystring = "LightBrown"
Case cKhaki~&:
Mystring = "Khaki"
Case cEmpty~&:
Mystring = "Empty"
Case Else:
Mystring = _Trim$(Str$(MyValue~&))
End Select
ColorToString$ = Mystring
End Function ' ColorToString$
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(09-20-2024, 11:19 PM)madscijr Wrote: (09-20-2024, 10:51 PM)SMcNeill Wrote: This one is simple. You're using two different variables of the same name and different types.
Code: (Select All) Dim Shared cBlue As _Unsigned Long
In your program, you're using the variable named cBlue... But you DIM SHARED cBlue~&.... those aren't the same variables.
cBlue defaults to a single. cBlue~& is an unsigned long.
singles don't carry blue transparency values, so they get rounded to 0. Actually, I think I recall where the delusion came from... at some point someone said that if you declare a FUNCTION with a type, ie
Code: (Select All) Function MyFunction~& ( <params here/> )
MyFunction~& = <some value/>
End Function
Code: (Select All) MyFunction~&(a, b, c)
Code: (Select All) MyFunction(a, b, c)
The same for CONSTants
CONST BRIGHTRED~& = _RGB32(255, 0, 0)
.. a few moments later ...
CIRCLE(100, 100), 100, BRIGHTRED
The _UNSIGNED LONG type identifier ( ~& ) is not needed at the end of a constant.
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Note, what you're thinking of is probably a case of not needing to use a suffix if you DIM a variable AS TYPE.
For example:
DIM x AS STRING
x$ = "Foo" <-- this is still perfectly valid.
PRINT x <-- this will still print "Foo" as x is dimmed as a string.
PRINT x! <-- this, however, is a different variable as defined by your suffix.
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(09-21-2024, 12:25 AM)TerryRitchie Wrote: (09-20-2024, 11:19 PM)madscijr Wrote: (09-20-2024, 10:51 PM)SMcNeill Wrote: This one is simple. You're using two different variables of the same name and different types.
Code: (Select All) Dim Shared cBlue As _Unsigned Long
In your program, you're using the variable named cBlue... But you DIM SHARED cBlue~&.... those aren't the same variables.
cBlue defaults to a single. cBlue~& is an unsigned long.
singles don't carry blue transparency values, so they get rounded to 0. Actually, I think I recall where the delusion came from... at some point someone said that if you declare a FUNCTION with a type, ie
Code: (Select All) Function MyFunction~& ( <params here/> )
MyFunction~& = <some value/>
End Function
Code: (Select All) MyFunction~&(a, b, c)
Code: (Select All) MyFunction(a, b, c)
The same for CONSTants
CONST BRIGHTRED~& = _RGB32(255, 0, 0)
.. a few moments later ...
CIRCLE(100, 100), 100, BRIGHTRED
The _UNSIGNED LONG type identifier ( ~& ) is not needed at the end of a constant.
Thank you! That is exactly it.
So the suffix isn't needed for functions and constants but it is for variables.
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(09-21-2024, 02:23 AM)madscijr Wrote: Thank you! That is exactly it.
So the suffix isn't needed for functions and constants but it is for variables.
A suffix isn't needed for variables either, but an unsuffixed variable is always going to refer to just one single variable type.
x = 123 <-- now, is x here a single? an integer? a float? an offset?
Honestly, with just the information you see above, you'd have to call it a single as it defaults to single. The above is the EXACT same thing as typing:
x! = 123
Now, if we instead had code like this:
DEFLNG A-Z
x = 123
The above would make x a LONG because we changed what the variable types were.
And if we have code like this:
DIM x AS _FLOAT
x = 123
The above would make x a FLOAT as that's what we explicitly defined it as.
And, if we have code like this:
DIM x&
x = 123
The above will still x being a SINGLE as x& is not the same as x. x is undefined as it has no suffix, so if defaults back to the standard type -- SINGLE in this case.
When you DIM variable AS TYPE, you set the unsuffixed value to that type. You do nothing to change the suffixed variables and their types.
The following code here is perfectly legal:
Code: (Select All)
Dim x%%, x&, x##
x = 123
Print x%%, x&, x##
Print x
Now, what variable type is x in the above?
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(09-21-2024, 02:35 AM)SMcNeill Wrote: (09-21-2024, 02:23 AM)madscijr Wrote: Thank you! That is exactly it.
So the suffix isn't needed for functions and constants but it is for variables.
A suffix isn't needed for variables either, but an unsuffixed variable is always going to refer to just one single variable type.
x = 123 <-- now, is x here a single? an integer? a float? an offset?
Honestly, with just the information you see above, you'd have to call it a single as it defaults to single. The above is the EXACT same thing as typing:
x! = 123
Now, if we instead had code like this:
DEFLNG A-Z
x = 123
The above would make x a LONG because we changed what the variable types were.
And if we have code like this:
DIM x AS _FLOAT
x = 123
The above would make x a FLOAT as that's what we explicitly defined it as.
And, if we have code like this:
DIM x&
x = 123
The above will still x being a SINGLE as x& is not the same as x. x is undefined as it has no suffix, so if defaults back to the standard type -- SINGLE in this case.
When you DIM variable AS TYPE, you set the unsuffixed value to that type. You do nothing to change the suffixed variables and their types.
The following code here is perfectly legal:
Code: (Select All)
Dim x%%, x&, x##
x = 123
Print x%%, x&, x##
Print x
Now, what variable type is x in the above? It's single because that's the default type for an unsuffixed variable not explicitly DIMmed as something else.
The default can be changed with the DEF{type} command, e.g., DEFLNG for long.
Is that right?
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