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trad.hlp 2.18 10/20/98 |
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This help file is associated with the trad interface to the Radiance |
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rad(1) program. Trad consists of trad.wsh and one do_*.tcl file for |
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size of the space. |
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The Zone entry windows may be manipulated in the following ways. |
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Control-U clears the current window. |
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Control-V pastes the contents of the current selection at the |
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insertion point. |
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Return moves the focus to the next window in the chain. |
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The "Auto" button may be used to set these values based on the bounding |
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box of one or more Radiance scene files. |
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.Zone.Auto |
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Use this button to automatically determine the bounding box for this |
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zone, based on the output of the "getbbox" command run on one or |
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more Radiance scene files. |
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The appropriate scene files are entered via a file |
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selection dialogue box, which comes up after the button is pressed. |
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The reason for selecting specific files rather than running getbbox |
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on the entire scene is that a zone usually does not include large |
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external objects, which may be present in the complete scene |
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description. |
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.Zone.Detail |
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The "Detail" setting indicates the relative level |
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(Divide total lumens by 179 lumens/watt to get watts.) |
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The exposure value may either be given as a positive real value, or |
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as a real value preceeded by a '+' or '-' indicating a positive or |
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as a real value preceded by a '+' or '-' indicating a positive or |
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negative number of f-stops (powers of two) from the original value. |
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If no exposure is given, pfilt will automatically compute the |
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for the convenience of entering a new view. |
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It has no effect on the rad input variables. |
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Note that Control-U will always clear an entry box whose cursor is |
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active. |
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.Views.Default |
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The "Set Default" button may be used to make the selected view the |
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the positive Y axis (+Y), the positive Z axis (+Z), the negative |
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X axis (-X), the negative Y axis (-Y), or the negative Z axis (-Z). |
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This setting may always be overriden by the "-vu xd yd zd" option, |
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This setting may always be overridden by the "-vu xd yd zd" option, |
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and will be altered for a particular view if it happens to be |
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parallel to the view direction. |
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.Views.Eyesep |
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The eye separation is used for generating stereo views of |
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the scene. |
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It is the measured distance between a viewer's pupils in world |
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coordinate units. |
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It is not used directly by rad, but should be set for other programs |
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that need it, such as rholo and glrad. |
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.Views.Picture |
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The root picture file name is given in the "Picture" entry window. |
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The "Delete" button on the Results screen is used to remove the |
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selected picture files from the filesystem. |
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Associated raw picture and z-buffer files |
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will also be deleted if they exist. |
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Verification is required before any action is taken. |
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.Results.Display |
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The print command window on the Results screen contains the system |
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command to use in printing out finished Radiance pictures. |
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The "%s" format field, which must appear somewhere in the command, |
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is replaced by the selected Radiance picture file name(s). |
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is replaced by the selected Radiance picture file name. |
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This command is executed multiple times if multiple files are |
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selected. |
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The default command is "ra_ps %s | lpr", which converts the Radiance |
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picture to a black and white PostScript file and sends it to the lpr |
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print spooler. |
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Add a "-c" option to "ra_ps" if the printer supports color. |
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If your printer does not understand PostScript, or your system does |
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not support lpr, this command must obviously be changed. |
