Sun Monitor

alfcen · #11 (**permalink**) 10-25-2007, 01:37 AM

Gentlemen,

Just a small 3D bitmap or some shades of color. I have been putting together web sites for years.

I totally lack of in-depth knowledge of the frameworks, nor do I own ability of constructing DLLs with #Develop. On top of this, I have a talent to introduce new bugs as my senile, rusty brain attempts to add functionality.

Most of my apps are enhanced by dzt's and Filippo's irreplaceable DLLs.

In short, I am truly happy to have you at my side

derez · #12 (**permalink**) 10-25-2007, 06:20 AM

Hi
Until there are controls in the shape of gauges, I used poligons (Erel's suggestion) as demonstrated here:

.....
triangle(track,40)
Form5.FPolygon(alX,0,alY,0,4,Rgb(TRK.R,TRK.G,TRK.B ),f)
Form5.FPolygon(alX,0,alY,0,4,cBlack)
....
Sub Triangle(angle,k)
angle = angle * cPI / 180
s = Sin(angle)
c = Cos(angle)
alX.Item(0) = center_x + k * s
alY.Item(0) = center_y - k * c
alX.Item(1) = center_x + 6 * c + 7 *s
alY.Item(1) = center_y - 7 * c + 6 * s
alX.Item(2) = center_x + 10 * s
alY.Item(2) = center_y - 10 * c
alX.Item(3) = center_x - 6 * c + 7 * s
alY.Item(3) = center_y - 7 * c - 6 * s
End Sub
.....

and it is drawn on the background of an image of a map, so an image of the instrument is the same.

alfcen · #13 (**permalink**) 10-25-2007, 07:05 AM

Very nice, David,

Your method allows scaling, thick lines, etc. A true alternative.

A control would require a vector graphic as background image rather than a bitmap to allow virtually limitless scaling of the control's dimensions.

agraham · #14 (**permalink**) 10-25-2007, 02:38 PM

Being inspired by seeing alfcens' gauges I've been playing with pictures and polygons to make analogue gauges. To make it easier I've taken derez' code above, added a bit to it and parameterized it to make playing with different pointer shapes easier. Someone might be interested so I've posted it below. You can make a surprising number of different pointer styles by playing with different parameters!