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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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There are two basic ways to compute the exposure value. |
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The first is by trial and error, where the value is adjusted up and |
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down within rview using the "e = value" command. |
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down within rvu using the "e = value" command. |
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Though it sounds flaky, this is the most reliable way to set the |
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exposure (and ambient level) in general lighting situations. |
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|
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To remove an unwanted view, select it and press the "Delete" button. |
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To undo this action, simply press the "Add" button again. |
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The first view in the list is the default given to rview during |
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The first view in the list is the default given to rvu during |
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interactive rendering, and is the first view rendered in a batch run. |
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To change the default view, select the newly desired view and press |
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the "Set Default" button. |
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define a view. |
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|
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The simplest view specification is of the form "-vf viewfile", where |
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"viewfile" is a file created with the rview "view" command, or a |
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"viewfile" is a file created with the rvu "view" command, or a |
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Radiance picture. |
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This method of naming views, although convenient, is not the best |
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since it is difficult to know exactly where such a view is by |
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The "Set Default" button may be used to make the selected view the |
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default view for rendering. |
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This simply moves the view to the top of the list in the rad input file. |
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The default view will be the one normally rendered by rview when rad |
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The default view will be the one normally rendered by rvu when rad |
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is started interactively, and is the first view rendered in a batch |
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process. |
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minutes) between progress reports. |
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Other windows allow the user to customize the options to oconv(1), |
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mkillum(1), rview(1) and rpict(1), and pfilt(1). |
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mkillum(1), rvu(1) and rpict(1), and pfilt(1). |
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.Options.Quality |
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The "Optfile" setting assigns a file to hold rendering options, |
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which may be a convenience when these options are reused for |
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rtrace(1) or rpiece(1), or manual invocations of rview or rpict. |
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rtrace(1) or rpiece(1), or manual invocations of rvu or rpict. |
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Using an options file also reduces the size of the command line, |
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making it a little easier on the eye. |
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.Options.Render |
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The "render opts" window is used to specify additional options to |
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the rview(1) and rpict(1) rendering programs. |
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the rvu(1) and rpict(1) rendering programs. |
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Most of the important parameters are computed by rad, so this |
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window is usually used to override specific parameters or to give |
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additional information, such as which materials to exclude from the |
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run, usually via rad(1). |
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The top row of buttons is used to update the octree following a |
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change to one or more input files. |
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The "rview" button starts an interactive rendering in the |
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The "rvu" button starts an interactive rendering in the |
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foreground. |
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The next set of buttons provides for the control of a batch |
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rendering process, taking place in the background. |
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(This will still cause the ambient file to be removed, |
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unfortunately.) |
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.Action.Rview |
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.Action.Rvu |
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The "rview" button on the Action screen starts an interactive |
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The "rvu" button on the Action screen starts an interactive |
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rendering for the selected view, indicated by the menu button |
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just to the right. |
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Other views may be accessed within rview using the "L name" |
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Other views may be accessed within rvu using the "L name" |
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command, and new views can be added with the "V name" |
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command. |
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a number later), then use the Views screen to override the previous |
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view definition with the new one. |
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(See the "View" topic in the current |
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help category, the "Change" topic under "Views" and the rview(1) |
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help category, the "Change" topic under "Views" and the rvu(1) |
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manual page for more information.) |
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If the octree is out-of-date, it will be rebuilt before rendering |
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.Action.View |
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The Action screen contains two menus for selecting views. |
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The top menu, next to the "rview" button, sets the view to start |
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with in rview, and is selected from the current view list. |
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The top menu, next to the "rvu" button, sets the view to start |
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with in rvu, and is selected from the current view list. |
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The second view menu, next to the "Start" button for batch |
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rendering, selects the view or views to render in batch mode. |
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If the special entry "ALL" is selected, then every view in the |
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current list will be rendered if it hasn't been already. |
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The view menu next to the "rview" button will be disabled if there |
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The view menu next to the "rvu" button will be disabled if there |
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is only one view to choose from. |
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The view menu next to the "Start" button will be disabled if there |
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is a batch job in progress, and thus the view cannot be changed. |
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The batch rendering view menu also selects the view or views |
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to use in producing a script during a dry run. |
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.Action.Processes |
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The "Number of processes" slider controls how many independent |
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processes are initiated by the "rvu" and "Start" buttons above |
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and below. |
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This should be set no greater than the number of virtual cores |
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on your system. |
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For interactive rendering, the "new" command within rvu may |
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be used to change the number of processes running. |
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For rendering in the background, the number of processes will |
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never be greater than the number of views if all views are |
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bing rendered. |
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If only a single view is selected for batch rendering, rad |
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will call rpiece to render it in sections using the selected |
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number of processes. |
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.Action.Start |
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