Opacity map in the Nxt?

[Jefferson JPD]

Hi. I need to do a material that is necessary to apply this kind of map. Is possible to do this as in the AutoCAD's render?

 

Thanks. Lord Jesus bless you!

[Roy Hirshkowitz]

Easiest way is to use the material type called Texture Set when you create the material.  Select New Material and Texture Set from the dropdown.  Load your map.

 

If the map doesn't say Opacity right after the picture, for example if it says Color-- right click on the map and select Opacity.

[Jefferson JPD]

I don't forget this option when I right clicked on the map.

[Roy Hirshkowitz]

I don't understand what you mean?  You can respond in Portuguese if it's easier.

[Jefferson JPD]

Thank's. O problema é que, eu tenho que fazer uma grade de metal. Só que dá muito trabalho para modelála em 3D. E eu poderia faze-la aplicando mapa de opacidade. Só que não encontrei essa opção ao clicar na textura com o botão direito do mouse. (Quero criar esse material, esse mapa de opacidade, com o metal pré feito do NXT.

[Roy Hirshkowitz]

Use the Texture Set option when you first create the material.  This template has the Opacity map option. After that you can switch to the Advanced editor.  This is the easy way.

 

The hard way is to do it all in the Advanced Editor:  

• Set the IOR to 1.0 on the Transparency Page
• On the Maps Channel Page--Uncheck Color
• Check Transparency and Transparency Color
• Check Invert Channels.

[Jefferson JPD]

OK Roy, thank You Very Much! End of topic!

[Marc Chaumier]

Why "Transparency color" is so often checked? I believed it was for materials like coloured glass ( stained glass). But I see that you use it for metal with opacity map, and a lot of materials which don't use transparency, have this fonction checked.

[Roy Hirshkowitz]

It's required in nXt if you want the map to behave exactly like AutoCAD's own opacity maps-- these tend toward a neutral color (white) as the transparency is increased-- and the object's color as the transparency is decreased.