Visual Newsletter
Reducing Calculation Time

Simplifying your lighting design will reduce the calculation time in Visual. To simplify your design, use the following methods:

Use Fewer Solid Objects

Use only solid objects that are necessary to proper model your design. For example, use only one solid object for shared surfaces, such as a shared wall between rooms. To erase a surface that is duplicated in a nearby object, first use the Explode command to break apart the object. Then, use the Erase command to erase the duplicate surface.

Reduce the Number of Calculation Zones

When possible, use Statistical Zones instead of multiple calculation zones in the same area. Statistical Zones use statistics that are already available in a calculation zone, so the Visual software performs fewer calculations, leading to decreased calculation time.

Reduce Calculation Point Density

Where appropriate, increase row and column spacing when placing calculation zones. Increased spacing for rows and columns reduces the number of calculation points in a calculation zone. Decreasing the number of calculation points decreases the number of individual calculations Visual performs.

Use Lower Circle/Arc Resolutions for Extruded Solid Arcs and Circles

Decrease the Circle/Arc Resolution to reduce the number of surfaces used in an extruded solid arc or circle. When a solid circle is extruded, solid segments are used to create the extrusion. When a lower Circle/Arc Resolution is used, fewer solid segments are used to create the extrusion and therefore calculation time is decreased.

To change the Circle/Arc Resolution:
  1. Select Tools, then Options
  2. Select Drawing Aids
  3. Under Circle/Arc Resolution, lower the resolution. A lower Circle/Arc Resolution decreases the number of segments used to model a circle
Avoid Placing Solid Objects Close Together

Make sure solid surfaces are not placed close together. Surfaces that are placed close together, such as two walls being used for adjacent rooms, create a significantly complex interreflection calculation, which increases calculation time.

As with most graphical and calculation software, increasing memory in your computer will also boost performance and decrease calculation time.

Keyboard Shortcuts

At the request of one of our dedicated Visual users, here is a list of keyboard shortcuts. Many of these keyboard shortcuts are similar to those used in similar CAD software and therefore may be familiar. However, we feel these shortcuts can help increase productivity for all our users.

A Add to selection
R Remove from selection or Redraw screen
P Select previously selected objects
L Select all objects in design
Tab Cycle through workplanes (XY, XZ, and YZ)
Up Arrow Move mouse crosshair in positive direction
Down Arrow Move mouse crosshair in negative direction
Home Return workplane to XY at 0 feet
Esc Cancel command
Shift Change the direction of the calculation zone’s normal while placing a calculation zone
C Copy a selected object or Change a Selection Window to a Crossing Window
L Begin Line command
M Begin Move command

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