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#!N
#!CSeaGreen #!N #!Rcreatvp Creating a Visual Program #!N
#!EC #!N #!N To create a visual program, use the Visual
Program Editor (VPE) window, in which you place and connect tools
and specify values for those tools. #!Luse366,dxall337 f Figure 66 #!EL illustrates the VPE window
and a sample visual program. #!Cbrown #!N #!F-adobe-times-medium-r-normal--18* #!Ruse366 #!N #!N
Graphics omitted from Online Documentation. Please see the manual. #!N Figure
66. VPE Window #!EF #!N #!EC #!N #!N The title bar
of the VPE displays the name of the current visual program
file. On the left side of the window are two palettes.
The top palette contains tool categories. When you select a category
from the top palette, the bottom palette displays the tool names
in that category. The large area on the right side of
the window is called the #!F-adobe-times-medium-i-normal--18* canvas #!EF . You place
tools on the canvas to construct a visual program. #!N #!N
In some cases, the visual program may be too large to
be displayed all at once on the canvas. On the right
and bottom sides of the canvas are #!F-adobe-times-medium-i-normal--18* scroll bars #!EF
, which allow you to move the display to different parts
of the visual program. To display a different part of the
visual program, click on the arrows at the end of the
scroll bars, or click and hold the button on the bar
between the arrows and move it until the desired portion of
the visual program is displayed. Scroll bars may also appear in
the tool palettes, if the list of categories or tools are
too long to fit. #!N #!N When you place a tool
onto the canvas, it is represented by an icon. #!Ltooli67,dxall337 f Figure 67 #!EL illustrates
an example of a #!F-adobe-times-medium-i-normal--18* tool icon #!EF . #!Cbrown #!N
#!F-adobe-times-medium-r-normal--18* #!Rtooli67 #!N Graphics omitted from Online Documentation. Please see the
manual. #!N #!N Figure 67. Example of a Tool Icon #!EF
#!N #!EC #!N #!N The tool icon, which has a highlighted
border when selected, consists of a rectangle displaying the name of
the tool, plus one or more tabs on the top, the
bottom, or the top and the bottom of the rectangle. The
rectangle is the active area and is used for selecting and
moving the tool. The tabs on the top represent inputs to
the tool, and the tabs on the bottom represent outputs. It
is possible for a tool to have either no inputs or
no outputs. Some of a tool's input tabs may be hidden
(i.e., not displayed). It is possible to reveal the hidden tabs
or hide additional tabs. It is also possible to add or
remove input tabs for tools that allow a variable number of
inputs. On many tools, one or more of the inputs are
highlighted with a different color, indicating that the input is required.
These tabs are discussed in more detail in #!Lsetval,dxall340 h Specifying Values for a Tool's Inputs #!EL . #!N
#!N The basic steps in creating a visual program are: #!N
#!I0 #!N #!F-adobe-times-medium-r-normal--18* #!N #!N #!I30 #!N 1. Select and place
the desired tools on the canvas. #!N #!I30 #!N 2. Connect
tool outputs to inputs. #!N #!I30 #!N 3. Set values for
the tools. #!N #!I30 #!N 4. If you plan to change
input parameters frequently while viewing an image (e.g., an isosurface value),
then you should build a Control Panel and set interactors (see
#!Lcpi,dxall381 h Building Control Panels #!EL and #!Linterac,dxall409 h Using Interactors #!EL ). #!N #!I0 #!N #!EF #!N #!N #!N
#!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF #!N #!N #!Lptocanv,dxall338 h Placing Tools on the Canvas #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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