How to adjust light to make the scene brighter?

[flower4wine]

Theo,

While using viewer to render scene, I have problem to make the view brighter. The original scene in Revit is bright. But after I export it via RvtVa3c, and load JSON in vA3C viewer, the scene turns dark. You can find different screenshots in link "http://url.cn/XSCwrE".

To get "vA3C result", I modified ambient color to 0xcccccc in loadJS(). I also changed latlon[] from New York to Shanghai (where I live), and time from 7/4 5:00 to 7/4 12:00 in updateLight(). I think the latter is to control direction of the direction light.

However, I cannot get similar result to what in Revit. Could you please provide tips ? Thanks a lot!

David

[theo-armour]

Hi David

You can find different screenshots in link "http://url.cn/XSCwrE".

As happened previously, url.cn requests a user name and password and my
ability to read Chinese characters - never very good - diminishes with each
passing year. I would advise against using this site with anybody based
outside of the mainland.

If you wish to attach images and files. GitHub allows you to do so directly
on he Issues page.

While using viewer to render scene, I have problem to make the view
brighter.
The original scene in Revit is bright. But after I export it via
RvtVa3c, and load JSON in vA3C viewer, the scene turns dark.

Does the scene you exported from Revit include the lights? If you import a
scene into Three.js and there are no lights and you are asking for Lambert
or Phong materials then objects will be very dark indeed.

To get "vA3C result", I modified ambient color to 0xcccccc in loadJS().
I also changed latlon[] from New York to Shanghai (where I live), and
time from 7/4 5:00 to 7/4 12:00 in updateLight().
I think the latter is to control direction of the direction light.

This all sounds as if you are using vA3C Viewer R1.

The current release is vA3C Viewer R8dev. See:

https://github.com/va3c/viewer/tree/gh-pages/va3c-viewer-html5

You might consider updating to the current release.

And by the way there is a whole new - much simpler - stream at:

https://github.com/va3c/viewer/tree/gh-pages/va3c-hacker

In any case, the issue of figuring out if an incoming object has sufficient
light is still a work in progress. We can talk more after you have had a
look at the new stuff.

---

By the way, regarding creating smaller JSON files, I note that the Three.js
Menubar.File.js does this a line 123 just before the export:

output = JSON.stringify( output, null, '\t' );
output = output.replace( /[\n\t]+([\d.e-[]]+)/g, '$1' );

---

I look forward to seeing some examples of your efforts...

Theo

On Fri, Nov 21, 2014 at 5:27 AM, flower4wine notifications@github.com
wrote:

Theo,

While using viewer to render scene, I have problem to make the view
brighter. The original scene in Revit is bright. But after I export it via
RvtVa3c, and load JSON in vA3C viewer, the scene turns dark. You can find
different screenshots in link "http://url.cn/XSCwrE".

To get "vA3C result", I modified ambient color to 0xcccccc in loadJS(). I
also changed latlon[] from New York to Shanghai (where I live), and time
from 7/4 5:00 to 7/4 12:00 in updateLight(). I think the latter is to
control direction of the direction light.

However, I cannot get similar result to what in Revit. Could you please
provide tips ? Thanks a lot!

David

—
Reply to this email directly or view it on GitHub
#7.

[flower4wine]

Theo,

Thanks a lot!

If you wish to attach images and files. GitHub allows you to do so directly on he Issues page.
Embarassed ! Here you go.

Does the scene you exported from Revit include the lights?
The view settings is 'Only Sunlight'. But I cannot find any 'light' relative node in export JSON file. So I guess there's no light exported.

To Jeremy: am I right?

I'll try your latest viewer version and keep you posted.

David

[jeremytammik]

the Revit exporter originally created a scene including a light. when i modified it to export only objects, the light was removed, so that the Revit model can be more easily integrated with or into other existing models.