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Current construction parameter panel

 Illuminator

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Current construction parameter panel

 Illuminator

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Current construction parameter panel

 Illuminator

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Current construction parameter panel

 Illuminator

 

During illuminator creating and placing on the Current construction parameter panel it is possible to set or change following illuminator parameters:

 

Coordinates of Illuminator in horizontal projection (C)
Height
Rotation angle/angle of radiation
Inclination angle in the vertical plane (Incl.)
Light flux (lumen)/Illumination(lux)
Flux/Illum. check box
Illuminator calculation
ON check box
Dispersion combo box

 


 

Coordinates of Illuminator in horizontal projection (C)

 

Coordinates of Illuminator center.

 

Height

 

Height of Illuminator center above the ground.

 

In multi-level projects, the height are calculated relative to base height of a layer to which the illuminator belongs.

 

Rotation angle/angle of radiation

 

For specifying both angles one Ang box on the panel is used. During specifying illuminator's direction, the rotation angle in horizontal plane appears in this box. During specifying light intensity concentration or editing illuminator, angle of radiation in degrees appears in the same box.

 

It is recommended to specify angle of radiation in the Illuminator calculation box.

 

Inclination angle in the vertical plane (Incl.)

 

An angle between the axis of radiation and the horizontal.

 

Light flux (lumen)/Illumination(lux)

 

There are 2 types of illuminators in VideoCAD:

 

Real illuminators having a finite total light flux (lumen) and angle of radiation (degree). Illumination on a scene, produced by real illuminator, diminishes inversely as the square of distance from the illuminator (inverse-square law) and is simulated in VideoCAD. For models of real illuminators total light flux of illuminator (lumen) is displayed in this box.

 

It is not recommended to set light flux in this box. Use Illuminator calculation box to calculate light flux from lamp and illuminator parameters.

 

Virtual illuminators, which are placed far enough from a scene in order to neglect illumination diminishing with distance. Total light flux and distance up to virtual illuminator may be unknown, but illumination (lux), created on a scene by the virtual illuminator should be known.

 

For virtual illuminators, illumination (lux) created on a scene by such illuminator is showed in this box. Virtual illuminators can be used for modeling known illumination in some parts of the scene.

 

Typical virtual illuminator - the Sun.

 

For infra-red (IR) illuminators the light flux and illumination cannot be measured in lumens and luxes. Therefore, Radiant flux (watt) instead of a light flux (lumen) is showed in this box, and irradiance (watt/square meter) is showed instead of illumination (lux).

 

See more: Infa-red illuminators.

 

Flux/Illum.  check box

 

Illuminator type can be specified in this box: Real (the box is marked) or Virtual.

 

Illuminator calculation

 

The button is intended to activate Illuminator calculation box in which you can specify internal parameters of real illuminators.

 

The button is accessible only for real illuminators.

 

The only parameter in Illuminator calculation box, which is valuable for virtual illuminators - Lamp type. To specify lamp type for virtual illuminator, switch it to real temporarily, set lamp type, and then make it to virtual again.

 

See more: Illuminator calculation.

 

ON check box

 

You can switch on and off the illuminator using this box.

 

For switching on or off several illuminators simultaneously, select them, right click on the Graphics area, and choose in the pop-up menu Switch ON illuminators or Switch OFF illuminators.

You can use items with the same names in the Main menu.

 

For one camera no more than 7 illuminators could be switched on simultaneously. Switched on illuminators are saved in camera parameters, therefore it is possible to switch on and switch off different illuminators for each camera.

 

Dispersion combo box

 

During illumination modeling, VideoCAD takes into account only direct light from illuminators. The light reflected from objects on a scene is ignored. However, setting value in this box, it is possible to specify what part of the light from this illuminator re-reflects and is present on the scene as diffused illumination.

 

At diffused light modeling, the distance from the illuminator up to the center of camera view area is considered.

 

See also: Illuminator calculation, Lamp parameters, Luminaire parameters, Infa-red illuminators, Illuminator, 3D Video>Image parameter panel>Scene.