In DIALux you can switch on Help rays for the luminaires. In the menu View you can find the function Help rays for Luminaires.
Fig. 135 Help rays for luminaires
When you click on this icon, a C0 arrow (red line) – which indicates the direction of the C0 plane – and a yellow line – degree of light radiation gamma = 0° – appears at the inserted luminaires. The C0 planes of the luminaires always show towards the X axis, if it wasn't rotated.
With DIALux you can switch on the 3D Light distribution curve, (LDC). This function is useful to check the correct placement of luminaires with asymmetrical distribution.
Fig. 136 Luminaries with 3D LDC
To show the LDC, click on the icon 3D Light Distribution Display or select the menu View → 3D Light Distribution Display.
In DIALux the alignment of luminaries is improved with the function Set illumination point, which allows you to align the yellow help ray (gamma = 0) with any point on a selected surface.
The alignment of luminaries has further been simplified in DIALux. Beside the function of the alignment of the luminaries to C0, Gamma0 and C90, Gamma 0 the illumination point can be also aligned optionally to the maximum luminous intensity (Imax.).
Fig. 137 Mouse mode to define illumination point
To set the illumination point, you have to select a single luminaire first. Maybe you even have to activate the single luminaire selection to select a luminaire inside of a luminaire arrangement.
Fig. 138 Selection of individual luminaires
When you have selected the single luminaire, you can use the mouse mode Set illumination point and click on the position (surface or furniture) you want to illuminate.
