Models

CAD / 3D files are converted into Aura™ 3D Models – see the below specification on how an Aura™ model is structured.

Components

Any Aura™ 3D model consists of these parts:

Assets

• BOM file

• Mesh

• Textures

• Lightmaps

Meta Information

• model.json – inventory of model components, like object tree and material list

• scene.json – inventory of interactive scene components, see here: Framework » Components

• meta.json – see here: Metadata

• manifest.json – A list of all assets used in the model (Textures, Meshes, Cubemaps, Animations) with meta-data

• stats.json – quick overview of model metadata

model.json - Model Inventory

Property	Description
objects
materials
meshes

scene.json - Scene Inventory

Property	Description
layouts
materials	❌ deprecated, see model.json instead
objects	❌ deprecated, see model.json instead
triggers
tours
external_materials
surfaces	❌ deprecated, use external_textures instead
external_textures
external_objects
variations
tours
background_color	❌ deprecated, use background instead
lighting_*	❌ deprecated, use lights instead
background	Setup of the background effect
lights	Array of lights
effects	Array of effects, e.g. Ambient Occlusion

Example

{
	"lighting_color": "0,0,0", // deprecated, use lights instead
	"lighting_type": "dynamic", // deprecated, use lights instead
	"lighting_direction": "(0.0,0.0,0.0)", // deprecated, use lights instead
	"lighting_intensity": "0", // deprecated, use lights instead
	"background_color": "rgba(1.000, 1.000, 1.000, 1.000)", // deprecated, use background instead
	"background": {
		"type": "color",
		"color": "rgba(1.000, 1.000, 1.000, 1.000)"
	},
	"lights": [
		{
			"type": "lightmap",
			"intensity": 1.0
		},
		{
			"type": "ambient",
			"color": "20,55,55",
			"intensity": 0.5
		},
		{
			"type": "directional",
			"color": "255,200,200",
			"intensity": 1.0,
			"direction": "0.5,0.5,0.5"
		}
	]
	"layouts": 
			[
				"root"
			],
	"materials": 
		[
			"floor 1",
			"cloth_1",
			"base_material"
		],
	"objects": 
		[
			"/sofa-scene",
			"/Plane",
			"/sofa_4",
			"/sofa_4/back",
			"/sofa_4/back 1",
			"/sofa_4/back 2",
			"/sofa_4/base",
			"/sofa_4/left",
			"/sofa_4/legs",
			"/sofa_4/right",
			"/sofa_4/seat",
			"/sofa_4/seat 1",
			"/sofa_4/seat 2"
		],
	"triggers": 
		[],
	"tours": 
		[],
	"external_materials": 
		[],
	"surfaces": // deprecated, use external_textures instead
		[],
	"external_textures": 
		[],
	"variations": 
		[],
	"external_objects": 
		[],
}

stats.json

Property	Description
objects	number of objects
rendered_objects	number of rendered objects
rendered_instances	number of objects that use the same mesh
hierarchy_depth	deepest nesting level of objects
materials	number of materials
textures	number of textures
cubemaps	numbers of cubemaps
meshes	number of meshes
animations	number of animation clips
texels	pixels of all textures (including cubemaps)
texels_2d	pixels of 2D textures only (excluding cubemaps)
vertices	number of vertices
triangles	number of triangles
lightmaps	number of lightmaps
mesh_filesize	total size of all meshes in bytes
texture_filesize	total size of all textures (including cubemaps) in bytes