Supported File Types

LeiaViewer supports the following file types:

• ‌FBX

• OBJ

• STL

• GLB

• GLTF

File Recommendations

• The file size limitations in LeiaViewer are impacted by the number of triangles, polygons and vertices of each model

• If your model is not loading, it may be too large to open in LeiaViewer. in this case you should try to reduce the facecount to under 100k.

• You can do this by going into Blender (a free app) and using the decimate tool.

• You may also want to adjust texture size down to 4K or less in Photoshop

• Recommend upper limit for facecounts: 100k

• Recommend upper limit for file sizes: 50MB

• Recommend upper limit for textures: 4K resolution or less

If there is problem loading a 3D model on your device:

• Send us the model file

• Describe the problem (is it a crash, is there an error modal, did the model fail to load?)

• Is the center of rotation correct

‌Importing Models

• To import models, tap the + button in the top left corner to open the file browser

• The file browser will automatically surface all of the model files located on your device

• For model types like FBX and OBJ, your textures will need to be siblings of the model file.

• STL doesn't have textures, so its a single model format. Just load the model by clicking on it in the file browser

‌Uploading OBJ & OBJ instructions

• OBJ and FBX are the same, but you need to make sure any textures that come with model are in same directory as the model itself

• sometimes they come with a separate textures folder, you need to move all the textures into the top level directory that contains the OBJ model

• once all the files are in the right place, just tap the OBJ model in LeiaViewer file browser

Animations

• Animations are not in a separate file, they are a part of models themselves

• Animations are usually included in GLB, GLTF, FBX model files already

• They will be shown when you open the model in LeiaViewer file browser

LeiaViewer is your home for viewing and enhancing 3D models in an immersive Lightfield environment. You can precisely tune the depth and appearance of your model and create dynamic backgrounds for a pleasant viewing and content creation experience. You can also log in to SketchFab to search and view millions of 3D models.

File Browser

Home Screen

• Your home screen will display all of the models opened on your device, whether they are stored locally on your device or stored in temporary storage via the SketchFab explorer

• Your opened models will always appear here until you clear your cache, in which case the home screen will be empty

Supported File Types

LeiaViewer supports the following file types:

• ‌FBX

• OBJ

• STL

• GLB

• GLTF

Sketchfab Explorer

Tap the Sketchfab Explorer button in the top right corner of the home screen to view hundreds of thousands of models from the SketchFab community.

• If you dont already have an account, you will need to create one on their website

• Once the account is ready, login with your username and password

• When you select a model to view from SketchFab, it will be downloaded locally to your device's temporary storage (until you clear the app's cache)

• It will then be stored in your home screen and remain accessible when you relaunch the app

Categories

• Models are organized into 18 different categories for a simplified searching experience

Search

• Tap the magnifying glass icon in the top right corner to search for specific models

• Tap the search box at the top to enter keywords

• For example, type “Cars” and tap the check icon on your keyboard to populate a list of 3D car models you can view

• Sort by category, time frame, most liked

• Filter only models with animations by tapping the Animation box

• Filter models curated by SketchFab staff by tapping the Staff Picks box

Model Viewer

When you tap a thumbnail to open a model from your device or the Sketchfab Explorer, you will view it in LeiaViewer's Model Viewer.

Depth Slider

• The slider on the left side of the UI controls the disparity value

• As you move the slider up, the depth effect of the model will increase

Lightfield / 2D Switch

• By default the Lightfield view will be enabled, so that you can see the model in 3D

• Tap the 2D button to view the model in regular 2D

• Note that in 2D mode, the depth slider will not appear in the UI

Animations

• Tap the animations icon to open up a menu of all available animations

If you have issues loading a Sketchfab model‌, please send us the following:

• Name of model and author

• Describe the problem (is it a crash, is there an error modal, did the model fail to load?)

• Describe visual issues (does the model look different than model thumbnail image?)

• Is the center of rotation correct

Environment Adjustments

Light

• The brightness slider increase the intensity of the light shined onto the model

• Rotation X slider moves the location of the light on the X axis

• Rotation Y slider moves the location of the light source on the Y axis

• Color selector adjusts the color of the models background

• Increasing the brightness slider will increase the saturation of the colors selected

Effects

• The DOF (Depth of Field) slider takes into account how much depth is in the scene and adds a blur.

• Any object in the scene that has too high of a disparity value will be blurred

• Move the slider to the right to increase the blur effect

• This blur helps fix cross-talk issues. When objects have too much depth added to them and are not in focus, the blur helps conceal the visual issues

• The Bloom slider adjusts how the light sources hit the object

• Move the Bloom slider to the right to give the object a stronger “glow”

Materials

• The materials section allows you to select different material designs for your model

• Includes Metal, Carbon and Wireframe materials

Undo/Redo

• Tap the left facing icon to undo any change made in any of the Adjustment categories

• Tap the right facing icon to redo any changes undone in any of the adjustment categories

• Tap the Restart circle icon to bring your model back to its original appearance before you made any changes in the Adjustment categories