How to draw lines on 3D walls?

Wiebe · Post by **Wiebe** » Thu Mar 30, 2006 8:01 pm

BCB6 and TeeChart Pro v7.05

How to draw e.g. a horizontal line on the bottom wall, at a position matching a certain zValue?

Thanks in advance,

Wiebe

Narcís · Post by **Narcís** » Fri Mar 31, 2006 8:36 am

Hi Wiebe,

You can custom draw on TChart's canvas using its OnAfterDraw event and do something like the following code:

Code: Select all

void __fastcall TForm1::Chart1AfterDraw(TObject *Sender)
{
	int index=Series1->ZValues->Locate(15);

	Chart1->Canvas->MoveTo3D(Chart1->Axes->Bottom->IStartPos, Chart1->Axes->Bottom->PosAxis, Series1->CalcZPos(index));
	Chart1->Canvas->LineTo3D(Chart1->Axes->Bottom->IEndPos, Chart1->Axes->Bottom->PosAxis, Series1->CalcZPos(index));
}

Wiebe · Post by **Wiebe** » Fri Mar 31, 2006 2:50 pm

Thanks Narcís,

Excellent.
However, "walldrawing" requires some imagination since properies like IEndPos and IStartPos are nowhere available nor explained in Help.
Or am I missing something?

Wiebe

Post by **Pep** » Mon Apr 03, 2006 11:21 am

Hi Wiebe,

yes, these properties has not been explained in the TeeChart Help files. We'll add them for the next releases.

In case you still having problems painting on the Chart please do not hesitate to let us know and we'll try to help you..