Steema Central

Hi,
I'm trying to make a chart that has a pie chart behind a gauge. It works fine except I can't find a way to make it appear 3d. The boss thinks the 2d look is too 'boring'. One problem is the 3d on pies appears at the bottom and i'm using a semi-pie and a gauge set at 180 degrees. When I set the 3d property, things get out of wack on the gauge, i don't think it's meant to work that way. Any insight would be appreciated.
Thanks,
Rick

Hi Rick,

This is most likely because gauges don't support 3D view. I'll add your request to our wish-list to be considered for inclusion in future releases.

Thanks Narcis for the reply. I've attached a picture of what I'm trying to create with a TDonutSeries combined with a TGaugeSeries. There are other controls out there 'similar' to this, but I think if you could enhance your gauge series by adding tdonut or tpie into it, this could be a useful and powerful graph object. My problems currently are trying to resize the gauge object to line up the marks to the donut object, especially if I allow the ability to change 3d depth, etc. on the donut.
Thanks,
Rick

Hi Rick,

Thanks for the information. I've included it to the wish-list entry.

Because the gauge doesn't support 3d, I'm trying to position the gauge up and down to line up with the 3d donut. Could you tell me what method or event I could call in the TGauge that could help me override its default positioning?
Thanks

Hi Octane,

You may achieve that creating your custom gauges inheriting from TGaugeSeries and overriding its DrawAllValues method.

I override the procedure 'DrawAllValues', but what properties do I change in order for the gauge's position to move?

Thanks,
Rick

I override the procedure 'DrawAllValues', but what properties do I change in order for the gauge's position to move?
Thanks,
Rick

Please respond soon.

I override the procedure 'DrawAllValues', but what properties do I change in order for the gauge's position to move?
Thanks,
Rick

Hi Rick,

Sorry but we don't offer support for the source code.

I didn't plan on changing any source code in the control, just overriding methods and changing postions of the ticks in order to line up with 3d positions of another graph object. I just need the ticks of the gauge to line up with the donut control's 3d outline.

Hi Rick,

in order to move the Gauge labels and ticks you will have to use the CustomXRadius and CustomYRadius properties :

Series2.CustomXRadius:=50;
Series2.CustomYRadius:=50;

Pep,
I did that, but they didn't line up with the TDonut when it was set to 3D look. I did find a solution, which involved overriding the DrawAllValues function, copying all the code from it, modifying the code to use the TDonut Rect by getting it with the CalcRect3D function and not using inherited so that all the drawing was with the new function. It works pretty good actually, even when zooming or changing 3d properties. Now all I need to do is get the gauge pointer to look nicer.
Thanks,
Rick