Card 6v - Hemicube View Factor Method Activation

This optional card activates the use of the hemicube method to calculate view factor requests.

Parameters: L, TOGGLE, WINSIZE, OPTION

L

L is the code HEMI (or 35)

TOGGLE

TOGGLE

  • TOGGLE = ON (or 4): all following VFS12, VFSALL, VFS1ALL, VFSENC Cards will be processed using the HEMIVIEW module.
  • TOGGLE = OFF (or 5): all following VFS12, VFSALL, VFS1ALL, VFSENC Cards will be processed using the VUFAC module.

WINSIZE

WINSIZE is the window size in pixels along each side of the square graphics window used by the hemicube method. More pixels yield greater accuracy, but result in increased computation time. The default and recommended value is 128.

OPTION

OPTION specifies the hemicube/analytical method hybrid option. Currently, only OPTION=1 is supported.

OPTION = 1 performs only pure hemicube calculations.

Code example


 HEMI ON 128 1

Notes

If toggled ON, the HEMIVIEW module calculates view factor requests which follow this card. If toggled OFF, view factors are calculated using the VUFAC module.

To use the HEMIVIEW module, you must have a graphics card and operating system which supports the OpenGL graphics library, and you must have an active graphics display.

During activation of the HEMIVIEW module, a small graphics window will appear on your display, which is used to calculate the view factors.