Blender to Babylon.js exporter

The Blender export plugin can be found on github repository.

An extension named Tower of Babel can also be used as exporter, see its readme to know about its functionnalities.

Features:

Scene

Blender	BJS equivalent
Scene	Camera: set scene activeCamera
Exporter panel	Export only selected layers: objects in hidden scene layers will not be taken into account Flat shade entire scene: all objects will be exported as flat shaded meshes (tip about shading) Force 64k per Mesh Vertex Limit: here to keep compatibility with old or low-cost hardware

World

Blender Render

Blender	BJS equivalent
World	Horizon Color: scene clearColor Ambient Color: scene ambientColor
Exporter panel	Mist: when Blender Render Mist is enabled, you have access to Fog Mode & Fog Density parameters

Object

Blender	BJS equivalent
	object name will be exported as it is
Transform	Position Rotation XYZ Euler Quaternion Scale do not forget to apply Scale before exporting: 'Ctrl' + 'A' > 'Scale'
Relations	parenting is supported

Constraints

Blender	BJS equivalent
	Track To: useful when using ArcRotate camera (tip)

Cameras

Blender	BJS equivalent
Lens	Field of View: fov Clipping: minZ & maxZ
Exporter panel	Camera Type, choose between: Arc Rotate (tip) Device Orientation Follow Gamepad Touch Universal Virtual Joysticks VR Dev Orientation Free Web VR Free

Lights

Blender	BJS equivalent
Lamp	Sun as Directionnal, Area as Point, other named like in BJS This Layer Only: includedOnlyMeshes when Sphere is checked, Distance value is exported as range
Spot Shape (only available when light type is Spot)	Size: Angle Blend: value * 2 = exponent
Exporter panel	Shadow Map (only for directional lights): None Standard Poisson ESM Blur ESM

Meshes

Blender	BJS equivalent
Normals	Auto Smooth is often use by Blender users, but is not supported. Use an edge split modifier instead, see tip.
UV Maps	UVMap: coordinatesIndex limited to 2 channels
Vertex Colors	if multiples layers exist, they will be merge
Exporter panel	Use Flat Shading: flat shaded mesh, see tip

Materials

General

• as you can notice in BJS mesh panel, materials will be suffixed by .babylon filename,
• other options can be found on this mesh panel, like max simultaneous lights, texture size for baking, etc,
• texture baking will be automatic when:
  • cycles render is the current render engine,
  • procedural textures are used.

Blender Render

Blender	BJS equivalent
	multi-materials are supported
Diffuse	color intensity is multiplied by intensity value
Specular	color intensity is multiplied by intensity value Hardness: specularPower
Shading	Emit: diffuse color * value Ambient: diffuse color * value
Transparency	when enabled, set alpha value under Z Transparency

Specials

• you can temporary switch to Blender Game to gain access to some materials settings:

Blender	BJS equivalent
Game Settings	Backface culling: true by default Face Orientation: Normal Billboard

Cycles Render

Blender	BJS equivalent

Textures

General

• Blender can handle packed images, even if their isn't source file on disk, but you have to unpack all before export,
• about automatic baking, see Materials.

Blender Render

Blender	BJS equivalent
	multiple textures can be assigned if two textures are assigned to the same Influence (see below), automatic baking will be used this name is only used in Blender
Texture Type	as seen above, this name is only used in Blender texture type: for image file, choose Image or Movie for procedural textures, choose any one but voxel data, point density, ocean
Image	texture filename will be texture name in BJS
Image Sampling	Use Alpha: hasAlpha
Image Mapping	Extension: choosing Clip will set Wrap value to 0

Cycles Render

Blender	BJS equivalent

• Name
• Associated file
• Level
• Use alpha
• uOffset / voffset
• uScale / uScale
• uAng / vAng / Wang
• WrapU / WrapV
• Coordinates index
• Texture in-lining to .babylon file