Entities

In contrary to many other rendering frameworks only one type of entity is available in Ignis.

All entities are defined by a name, shape, bsdf, transform and some other properties defined below. Only the shape and name parameter are mandatory.

If no transformation is specified, the identity transformation is used. If no bsdf is specified, a black, non-scattering bsdf will be used.

{
    // ...
    "entities": [
        // ...
        {"name":"NAME", "shape":"SHAPE", "bsdf":"BSDF", "transform":TRANSFORM}},
        // ...
    ]
    // ...
}

Note

Entities do not support PExpr expressions.

Parameter	Type	Default	Description
shape	string	None	The name of the actual shape.
bsdf	string	None	The name of the actual bsdf.
inner_medium	string	None	Optional name for the interior medium.
outer_medium	string	None	Optional name for the outerior medium.
transform	transform	Identity	Apply given transformation to shape.
camera_visible	boolean	true	Set true if entity shall be directly visible from the camera
light_visible	boolean	true	Set true if entity shall be visible for a ray starting from a light source
bounce_visible	boolean	true	Set true if entity shall be visible for an indirect ray
shadow_visible	boolean	true	Set true if entity shall be visible for a so called shadow ray. A shadow ray is a ray emitted to test if non-occluded connection between a point on a surface or medium and a light source is available.