Cameras

Ignis contains several useful camera models. Only one camera can be specified per scene. The camera is specified in the camera block with a type listed in this section below.

The actual image (or viewport) size is specified in the film block with an optional sample strategy in sampler. The sample strategy has to be one of "independent" (default), "mjitt" or "halton".

{
    // ...
   "camera": {
        "type": "TYPE",
        "fov": FOV,
        "near_clip": 0.1,
        "far_clip": 100,
        "transform": TRANSFORM
    },
    "film": {
        "size": [SX, SZ],
        "sampler": "independent"
    }
    // ...
}

Perspective Camera (perspective)

Parameter	Type	Default	PExpr	Description
fov	number	60		Horizontal field of view given in degrees. Can be also given via the name hfov.
vfov	number	None		Vertical field of view given in degrees. Can not be defined together with fov or hfov.
aspect_ratio	number	None		Aspect ratio (width over height). If not specified the current viewport will be used.
near_clip far_clip	number	0, inf		Near and far clip of the camera.
focal_length	number	1		Focal length given in scene units. Only used if aperture_radius != 0.
aperture_radius	number	0		Aperture radius in scene units. 0 disables depth of field.

Perspective camera

Orthogonal Camera (orthogonal)

Parameter	Type	Default	PExpr	Description
near_clip far_clip	number	0, inf		Near and far clip of the camera.
scale	number	1		Horizontal scale factor given in scene units.
aspect_ratio	number	None		Aspect ratio (width over height). If not specified the current viewport will be used.

Orthogonal camera

Fisheye Camera (fisheye, fishlens)

Parameter	Type	Default	PExpr	Description
near_clip far_clip	number	0, inf		Near and far clip of the camera.
mode	string	"circular"		Clipping mode. Must be one of "circular", "cropped" or "full".

Fishlens camera