A
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| ambient lighting |
The intensity of light
emitted in any direction by the object, even if not lit by any light source |
| attenuation |
The action of lessening illumination |
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C
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| camera |
A rectangular-shaped
element with a lens used to specify the chosen viewpoint to take the image |
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D
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| diffuse lighting |
The intensity of light diffused by
the object when lit by light sources |
| directional light |
A light coming from a
given direction (like the sun, for instance) generating constant intensity
parallel lighting |
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E
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| environment |
A geometrical element, either
rectangular, cylindrical or spherical, used to simulate interior as well as
exterior scenes |
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L
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| light source |
A source of light illuminating the
object to be rendered |
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M
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| mapping |
A method used to apply
an image onto an object in order this object acquires a surface texture |
| material |
An object that can be
mapped onto a geometry to simulate visually and physically the components
an object is made of (e.g. wood, stone, etc.) |
| material family |
A set of materials |
| material library |
A Version 5 document
created and managed in the Material Library workshop. It contains material
features which are organized into material families. This document is
identified with the .CATMaterial extension |
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P
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| part |
A 3D entity obtained by combining
different features |
| point light |
A punctual illumination
(like a bulb, for instance) emitting light isotropically, i.e. in all
directions |
| product |
A 3D entity containing several
components |
| property |
The attribute or characteristic of
an object that defines its state, appearance or value |
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R
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| reflectivity |
The ability to reflect light |
| refraction |
The degree of light passing through
an object |
| rendering |
A photo-realistic drawing of
three-dimensional objects |
| roughness |
The dullness of an object (it
represents the size of the reflecting zone) |
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S
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| scene |
A reusable
configuration enabling to put models on stage using cameras, light sources,
environments, turntables |
| shadow |
A dark reflected image
cast by an object occluding rays from a light source |
| specification tree |
An area of the document
window reserved for viewing the design specifcations of a part, presented
in the form of a tree structure |
| specular lighting |
The dullness of an object |
| spot light |
A light source emitting
the light isotropically inside a cone of influence determined by the
privileged direction of illumination (forming the axis of revolution) and
the angle that the edge of the cone forms with this axis. |
| sticker |
An image that can be mapped onto a
face of a product |
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T
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| texture |
An image that can be mapped onto the
geometry |
| texture file |
An external image (.jpeg) a material
may refer to for rendering purpose. |
| transparency |
The degree of
transparency of an object. The object transparency defines its property of
transmitting light so that elements lying beyond are seen |
| turntable |
A revolvable platform
enabling to generate a sequence of images representing the model rotation
around a user-defined axis |
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