Rayfront User Manual

Editing a Measuring Field

A measuring field can be thought of as a grid of light sensors, that can be placed anywhere in space, and will produce a series of measurements, expressed in illuminance or daylight factor values. The field is subdivided in both directions, either by an even number n of divisions or by regular steps x (potentially leaving a remainder y).

Notice: Field definitions are global to the project. This means that if you edit a field definition within the current variation and there are any other variations in the project that use the same field definition, then future simulations in those variations will all use the new settings.

Field Size and Position

This defines where the field is located in space, and in which direction the "sensors" are pointing.

Front Left Point:
Front Right Point:
Back Left Point:
The three corner points define the location and orientation of the field. Note that they don't necessarily need to form a right angle (the field will assume the shape of a parallelogram otherwise). However, fields imported from Autocad/Intellicad will always be rectangular.

Up Vector:
The upwards direction will go along the surface normal of the field, as determined by the right hand rule assuming a point sequence from back left, front left, to front right. The diagram above shows a top view of the field.

Grid Settings

The grid settings define the spacing of the grid in both directions and the wall offset.

Width:
Depth:
The two fields display the size of the grid, as specified by the points above. The display is updated dynamically if the point values are changed.

divide by: -> step len:
If a regular division is chosen for either direction, then the step length field will display the resulting grid spacing dynamically.

step by by: -> step num:
If a fixed stepwidth is chosen for either direction, then the step number field will display the numbers of steps (and the remainder) dynamically.

Wall Offset:
In order to avoid computing points that coincide with a wall surface, this value allows to specify an offset. The outermost points of the grid will be moved towards the center by this amount.

Buttonbar

Ok - use the entered values and close the dialog.

Cancel - discard the entered values and close the dialog.

Revert - discard the entered values and reset all fields to the values they had when the dialog opened.

Help... - display this information.

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