DrawCircle for 3D (aka hollow cylinder)

[ptis]

Hello,

I want to draw a hollow cylinder respectively a cylinder with a inner radius (like in the DrawCircle-Command).

Is there any way to do that without a 3D-Model or a Mesh?

Background: I need this for a better looking Curved Conveyor, but the Mesh from the normal conveyors doesn'l look good enough and I have problems to scale them right.

Thanks

[BartC]

Hello ptis,

You can use the following code to draw a cylinder:

Code: Select all

DrawCylinder(
  0,       {X-Location from Atom origin}
  0,       {Y-Location from Atom origin}
  0,       {Y-Location from Atom origin}
  20,      {Height, 50 % in positive z-direction, 50% in negative z-direction}
  10,      {Radius in X-direction} 
  10,      {Radius in Y-direction} 
  360,     {Angle of the cylinder (360 for a complete round cylinder)}
  Z_AXIS,  {Axis around which the cylinder is drawn}
  CP_SIDES + CP_BOTTOM + CP_TOP {Which sides are drawn. Only use CP_SIDES for a hollow cylinder}
)

Regards,

Bart

[BartC]

Hello ptis,

I thought about your idea of having an inner radius on a cylinder and came up with a solution. In the attached model, you can find the 4DScript to draw a hollow cylinder on the On3DDraw event of the product. Play with the variables to adjust the shape of your cylinder.

Regards,

Bart

[ptis]

Hello BartC,

a combination of Cone and Cylinder... clever idea! It works! Thanks!

But one more little question: If I rotate this model (with rotatecoords) the shading is obviously wrong. ED shades the model like it wouldn't be rotated. Is there any way to fix this? I guess the only way is to do the "RotateCoords" by myself and don't use the ED-RotateCoords?

Thanks

[ptis]

*bump*

But one more little question: If I rotate this model (with rotatecoords) the shading is obviously wrong. ED shades the model like it wouldn't be rotated. Is there any way to fix this?