3D rendering lamps

[Anonymous]

Hello!

I have a few products I need help with. I am absolutely no pro, and I have little knowledge about rendering. I have created 5 products in Inventor that I need to render to make them seem more photo realistic, as most Inventor users know, the builtin rendering engine in Inventor is nothing to brag about...

I've tried to learn rendering myself by watching videos on youtube, but I am still lost.

What I need is someone to help me render the things I've created in Inventor. I've tried 3ds Max, but some of the parts from my drawing disappears when importing DWG /DWF into 3ds. It also seems like Mental Ray is needed to make the rendering smooth enough.

If I had the use of 3ds max and mental ray in the future, I would buy it myself and learn it, but I don't. I need to have made smooth looking models of my products.

Hope that there is somebody on this forum that can help. Please contact me on steffen@lampshack.no.

Regards

Steffen Soma 

[leeminardi]

I suggest that you export the AutoCAD solid model in the .igs format.  Igs represents the AutoCAD solid as NURBS surfaces which means the surfaces will be smooth.  A dwg file imported to 3ds Max will use a tessellated model representing smooth surfaces as a series of flat triangular faces. You can increase the fineness of the triangles used in AutoCAD by increasing the value of Rendered Object Smoothness in the Display tab of Options.

The light blue object in the image below was imported into 3ds Max using igs and the green object using dwg.

 

Lee

[Anonymous]

Hello Lee,

Thank you for the tip!

Still I'm far from my goal. I want to render my drawings with shades, light and reflections to make a photo realistic model.

I havn't tried igs yet, but do you know why one of the parts in my DWG drawing totaly disappers in 3ds?

The drawing is an assembly from Invetor exported to DWG/DWF. All other parts, but one, is in its place.

I assume it might be a problem in the assembly drawing as the part exports to DWG and shoes in 3ds fine by it self.

[leeminardi]

"Totally disappear"?   You do not see anything, not even a solid black silhouette?

This could be for a few reasons some of which I do not understand.

Here are a few things to try.  I assume you can select the object although you cannot see it (via Select by Name if not by a screen pick).

1. Change the Renderer from Scanline (if that is what you have a active) to NVIDIA Mental Ray.  Define a simple Arch & Design material and assign it to the selected object.

2. There may be a problem with surface normals pointing inwards instead of outwards. Go to the Modify panel and choose the Face sub-object then select some of the object's faces and click Flip in the Surface Properties sub-menu in the Modify panel.   See if that makes a difference.

3. You could keep the renderer to SCan-line and define a Double-sided material to assign to the object.

What version of Max are you using and what renderer have you set?  Have you assigned the object a material?  If so, what type (standard, Arch & Design,...)?