topic Re: Help: General light is not showing in 3d rendering in Visualization

Help: General light is not showing in 3d rendering

Anonymous — Thu, 11 May 2023 10:08:41 GMT

I am using archicad 14 and i used the general light sources (light cone down) and when i render its not showing (the lighting) in the rendering why is that? please help and thanks

Re: Help: General light is not showing in 3d rendering

Dwight — Tue, 12 Apr 2011 21:32:48 GMT

Of course you have:

turned the light source on

given it some power

enabled lights in the photorendering dialog

Re: Help: General light is not showing in 3d rendering

Anonymous — Fri, 15 Apr 2011 16:29:35 GMT

yes i have all that done but only when i use general light it does not show in the rendering but when i use interior light it shows in rendering please help

Re: Help: General light is not showing in 3d rendering

NCornia — Fri, 15 Apr 2011 22:21:55 GMT

Reem_92

More information is needed. Can you provide a screenshot of your model and photo-rendering settings just prior to the actual render.

I am wondering if your lamp is above the ceiling, or the luminance distance is too short for it to reach its desired target. Also, the Light Cone Down creates no ambient light, it simply illuminates what is in its path like a spotlight on a stage, so if that is your only light source in a room it will only light the floor and objects directly below.

As Dwight mentioned, check your Document>Creative Imaging>Photo Rendering Settings. Is the box next to Lamps (under Light Sources) checked? Are you using the Lightworks engine, internal engine?

Re: Help: General light is not showing in 3d rendering

vistasp — Sat, 16 Apr 2011 06:25:05 GMT

Also, have you by any chance placed the light on a layer that is turned off in your 3D view?

Re: Help: General light is not showing in 3d rendering

Anonymous — Sat, 16 Apr 2011 06:52:42 GMT

i took an image before rendering and after and it will show the interior light showing but not the general lights

Re: Help: General light is not showing in 3d rendering

Anonymous — Sat, 16 Apr 2011 06:53:55 GMT

second one

Re: Help: General light is not showing in 3d rendering

Anonymous — Sat, 16 Apr 2011 07:08:20 GMT

third one

Re: Help: General light is not showing in 3d rendering

Karl Ottenstein — Sat, 16 Apr 2011 23:36:30 GMT

Where are all of those lights around the base of the cabinet aimed? And what color is their light? (If the light is black, it is invisible of course. If the light is aimed downwards and in the distance, the light will not appear on the floor.)

You do realize that ArchiCAD does not support radiosity or global illumination, right? So no light will bounce around your scene from these lights to illuminate any other surfaces. You have to fake it with extra omnidirectional lights, window lights, etc.

(The effort of illuminating interior scenes with ArchiCAD is great ... a reason that anyone doing many interiors should consider Artlantis or some other rendering package.)

Cheers,
Karl

Re: Help: General light is not showing in 3d rendering

Dwight — Sat, 16 Apr 2011 23:42:26 GMT

As to why a certain light source doesn't work in a given scene is something that can't be answered without troubleshooting the model and the setup.

However, users can easily learn how light sources work by making a test room where the test source is clearly positioned to float freely, eliminating any unexpected shadow/blocking conditions.

This is also useful to learn and anticipate energy falloff.

Users should note that Graphisoft made a huge change in the general light source behaviour in Version 11 that reduced output strength.

Re: Help: General light is not showing in 3d rendering

David Maudlin — Sun, 17 Apr 2011 12:28:02 GMT

Reem_92:

I think the problem is that the sphere shown in Untitled.gif is the extent (Light Stops) of the light source, so this needs to be increased.

You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.

David

Re: Help: General light is not showing in 3d rendering

Anonymous — Sun, 17 Apr 2011 20:51:47 GMT

If the problem is the lights around the base of the unit, I would suggest lifting the lights slightly above the floor surface.

Re: Help: General light is not showing in 3d rendering

David Maudlin — Mon, 18 Apr 2011 11:37:16 GMT

On closer inspection of Untitled.gif, the lights are not spheres but look like cones, pointing away from the base.

Reem_92:
Post a screen shot of the dialog box for one of these lights, with the Light Settings area under Parameters expanded.

David

Re: Help: General light is not showing in 3d rendering

Anonymous — Mon, 18 Apr 2011 14:37:04 GMT

I looked at david's pictures and that what i wanted to do, i think the problem was the cone light, i replaced it with the circular one and it worked fine
thxxx alot everyone