Steema Central

Posted: **Thu May 28, 2009 1:34 pm**

Teechart pro v5 VCL
BCB6

Hi,

Y would like to draw a cylinder with several steps depth.
Using surface wireframe and AddXYZ method.
The first 180 ° ar ok
but while drawing the remainder, points are not joined correctly.
(irregular is checked)

Here is a trivial sample of code

Code: Select all

      for(int i = 0; i < 360; i ++)
      {
         float angle = DegToRad(i);
         x = cos(angle);
         y = sin(angle);
         Series1->AddXYZ(x, y, 0);
         Series1->AddXYZ(x, y, 1);
      }

Thanks a lot for your help...

Posted: **Thu May 28, 2009 2:13 pm**

Hi psau,

First, the problem is that you are trying to draw an irregular surface and that's why only a few points are drawn.
To see a "better" result you could do this:

Code: Select all

Series1.IrregularGrid := true;

But these series aren't thought to draw things like that so the result isn't the expected. On the other hand, maybe you could try using a Point3D series with invisible pointer so that only the line will be drawn. But now you will see that the lines are drawn doing a "zigzag" so here you should adjust your adding loop to draw lines as you want.

Steema Central

Problem on adding XYZ poins in 3D surface wireframe chart

Problem on adding XYZ poins in 3D surface wireframe chart