3D Model Importer App Reference

(last updated August 2020, v1.1.0)

Controls

Result	Control
Rotate Model	Left Click and Drag on 2D screen or in Looking Glass
Move and Refocus	Double Click on model in Looking Glass
Move and Refocus to center of the model	Double Click on the blank space in Looking Glass
Pan Scene	Right Click and Drag on the 2D screen or in Looking Glass
Zoom	Scroll Wheel
Toggle Menu	Square button on Looking Glass or Tab on Keyboard
Previous Model	Left button on Looking Glass or Left Arrow on Keyboard
Next Model	Right button on Looking Glass or Right Arrow on Keyboard
Load Model	Ctrl and O
Save Model Settings	Ctrl and S

Model Support

File types

• glTF (v2.0 or later)

• OBJ

• glb

Model Weight

Many factors affect model performance, including differences in hardware, model settings, etc. In general, assuming you have one material on your mesh, the recommended maximum polygon count for models is 400k. Additional materials will significantly reduce performance and may need to be offset with a lower poly count.

Object Settings

model settings gltf

Shader Types

Metallic and Specular are two common variations of PBR shaders. Both give a representation of the material of the surface.

Metallic Shader is specifiically for metal and exposes two properties:

• Metallic - Adjusts how metallic (and therefore reflective) the material is

• Roughness - Adjusts how rough or smooth the material is

Specular Shader is for non-metalllic materials and exposes one property:

• Glossiness - Adjusts the glossiness of the object, changing how it is affected by lighting

Vertex Color Shader is useful if the model unexpectedly has no color with the other two material types. If it uses this shader, it means the model itself has some color data stored for each vertex. If the model should have color but is white after loading it into the 3D Model Importer, try using the Vertex Color shader.

Mesh Detail

Increases or decreases the level of complexity of the mesh on the 3D model. This may take time to process. You can check the status of an ongoing change in the "Decimations" tab in the Options panel.

Animation Controls

Note: These settings only appear if your model is a glTF and has animations.

• Play is a toggle that plays and pauses the animation

• Animation Speed changes how fast the animation plays

OBJ Texture Settings

Note: These settings only appear if your model is an .obj file. If you don't have an .mtl file or the textures don't load correctly, these options can help by allowing you to load in new textures.

• Load Albedo Texture allows you to set a base color map for your model

• Load Specular Map sets the specular channel

• Load Emission Map sets the emission texture

• Load Bump Map sets the bump or normal map

Lighting Settings

Lighting Settings adjust the overall visual presentation of your scene.

lighting

Background

• Use Backdrop toggles whether or not to show a backdrop

• Backdrop Distance moves the backdrop, where "0" sets it equal to your current focal point and "1" sets it all the way to the back.

Light Position

• Horizontal Angle changes the direction of the Directional Light horizontally

• Vertical Angle changes the direction of the Directional Light vertically

Light Intensity

• Directional Intensity changes the intensity of the directional light in the scene

• Ambient Intensity changes the intensity of the ambient lighting in the scene

Post-Processing

• DoF Intensity changes the intensity of the depth of field focus blur in the scene

• AO Intensity changes the intensity of the ambient occlusion in the scene

• Bloom Intensity changes the intensity of bloom in the scene

Model Settings

The bottom buttons "Save Settings", "Reload Settings", and "Set to Default" allow the user to adjust the model's object and lighting settings as well as its framing in the Looking Glass and save these settings.

Save Settings - Save the current settings on the 3D Model

Reload Settings - Reload previously saved settings on the 3D Model

Set to Default - Return 3D model settings to 3D Model Importer's default settings on load

Quality Settings

If your computer cannot meet the demands of your 3D model, quality settings will help mitigate some of the render latency.

quality

Quilt Resolution Quality

Sets the quality of the 3D rendering in the Looking Glass. This is the single greatest determinant of both the visual quality and the frame-rate of the scene.

Optimization

Optimizes the model's performance to the user's preference. No optimization can lead to slower rendering. This is the recommended way to improve performance. This method will create some artifacts but can greatly improve rendering speed.

Post-Processing

Turn on or off the post-processing effects that are set in object settings. Turning off post-processing effects will allow object to render faster.

Model Loading Timeout

This timeout is the length (in seconds) the app will wait before cancelling a model import. You may need to increase this value for complex models on lower-end computers, or shut it off entirely, though you should be aware that this may lead to the importer getting into a bad state - hence disabling the timeout is not recommended.

All of the settings under the "Quality Settings" tab will be stored by the app and set to your preferences each time you open it up, so if the first time you run the app your frame-rate is too low and you need to drop the quality settings, you won't run into this issue the next time you open the 3D Model Importer.

Options

The Options panel, accessible by pressing the ? button, has some additional functionality and information.

options

Instructions

There are three buttons to provide helpful information when using the app.

• General Instructions opens the panel that appears at the start, with general information on the various tabs

• Controls covers the various ways of interacting with your scene, including Looking Glass buttons (on non-Portrait devices).

• Leap Controls covers how to manipulate the model with Leap Motion controllers.

Capturing Content

There are two buttons to capture your content - this is especially useful if you want to store your scene for playback on the Looking Glass Portrait in Standalone mode. You can capture both video clips (maximum 10 seconds) and screenshots. For models without animations, capturing a screenshot is strongly recommended, as it is much faster. Capturing a video clip can take several minutes!

• Record Clip starts capturing a video of your scene for a maximum of 10 seconds. You can stop the recording by pressing the same button again. You can continue interacting with your scene, but be aware that the frame rate will be very low!

• Screenshot captures a single image of your scene

Once you've exported your scene, open HoloPlay Studio and import as a "Quilt Photo / Video" and you should be able to sync to your device. Note that the end of the file name of your recorded clip provides important quilt setting ("qs") and aspect ratio ("a") information for HoloPlay Studio - altering this text may cause issues when importing your clip.

With your clip added to your playlist, you'll be able to view, edit, and sync your capture for playback in Standalone mode!

Decimations

This tab provides information on the status of any mesh detail adjustments. From here, you can see the queue of decimations and cancel them by pressing the X button.

Software Support

Various types of 3D modeling software have various levels of support for the accepted file formats (.obj, .glTF, .glb).

	Source	Software Type	Support
	Sketchfab	Model Repository	.glTF download available for all downloadable models
	TurboSquid	Model Repository	Search can be filtered to show models that support obj files
	Poly	Model Repository	Search must be filtered to only show "Blocks models" that are "Remixable"
	Blender	3D Modelling	Native .obj support
	Maya	3D Modelling	.obj support via Plugin
	Cinema 4D	3D Modelling	Native .obj support
	Paint 3D	3D Modelling (Native to Windows)	Native .obj support
	Everything else	N/A	First check to see if it natively exports an accepted format. If not, this list of glTF converters and exporters may be helpful. Of all the tools listed, we've found success using Sketchfab's conversion tools.