dx-doc 1:4.4.4-7 / usr / share / doc / dx / help / dxall300

#!F-adobe-helvetica-medium-r-normal--18*
#!N 
#!CSeaGreen #!N  #!Rchav Controlling the 
Image: View Control... #!N #!EC #!N #!N You can change your 
view of an object in the Image window by using the 
 #!F-adobe-times-bold-r-normal--18*   View Control... #!EF option of the Image window  #!F-adobe-times-bold-r-normal--18*   Options 
#!EF menu. The way an object appears in the Image window 
is controlled by a  #!F-adobe-times-medium-i-normal--18*   camera #!EF . The camera specifies 
the  #!F-adobe-times-medium-i-normal--18*   look-from point #!EF , the  #!F-adobe-times-medium-i-normal--18*   look-to point #!EF 
, the field of view, the size and shape of the 
window, and whether the rendering method is orthographic or perspective. #!N 
#!N If you are using orthographic projection, the field of view 
is controlled by a parameter called  #!F-adobe-times-medium-i-normal--18*   width #!EF , which 
specifies the width of the Image window in world coordinates. For 
perspective projection, the field of view is controlled by the camera 
look-from position and the view angle of the camera. The differences 
between these two projection methods is discussed in  #!Lprojmet,dxall302 h Changing the Projection Method  #!EL  . #!N 
#!N You can change the camera settings with  #!F-adobe-times-medium-i-normal--18*   direct interactors 
#!EF , which let you use the mouse in conjunction with 
dialog box options to manipulate the view of the object directly, 
and which provide immediate visual feedback for your actions. Or, you 
can specify precise values for the camera settings, as described in 
 #!Lcamset,dxall310 h Precise Camera Settings  #!EL  . #!N #!N You control your view of the object 
by selecting one of the control  #!F-adobe-times-medium-i-normal--18*   modes #!EF . Each 
mode allows you to control different aspects of your view. When 
you select this option, the  #!F-adobe-times-bold-r-normal--18*   View Control... #!EF dialog box 
appears. The basic configuration of this dialog box is illustrated in 
 #!Lviewc54,dxall300 f Figure 54  #!EL  . #!Cbrown #!N  #!F-adobe-times-medium-r-normal--18*    #!Rviewc54 #!N Graphics omitted from Online 
Documentation. Please see the manual. #!N #!N Figure 54. View Control 
Dialog Box #!EF #!N #!EC #!N #!N Depending on the view 
mode selected, the appearance of the dialog box changes, automatically adding 
controls particular to the current mode. #!N #!N Accelerator keys are 
associated with many of the modes, so that it is not 
even necessary to open the  #!F-adobe-times-bold-r-normal--18*   View Control... #!EF dialog box 
to access these view control modes.  #!Lmode55,dxall300 f Figure 55  #!EL  lists the modes with 
their respective accelerator keys. #!Cbrown #!N  #!F-adobe-times-medium-r-normal--18*    #!Rmode55 #!T,1,31,56 #!N TAB 
None| #!N TAB Came|aCtr|+K #!N TAB Curs|rCtr|+X #!N TAB Pick| Ctr|+I 
#!N TAB Navi|aCtr|+N #!N TAB Pan/|oCtr|+G #!N TAB Roam| Ctr|+W #!N 
TAB Rota|eCtr|+R #!N TAB Zoom| Ctr|+Z #!N Figure 55. View Control 
Modes with Accelerator Keys #!EF #!N #!EC #!N #!N You can 
change your view of the image by: #!N #!I0 #!N  #!F-adobe-times-medium-r-normal--18*   
#!N #!N #!I30 #!N o Changing your viewing direction #!N #!I30 
#!N o Changing the projection method #!N #!I30 #!N o Rotating 
the object (  #!F-adobe-times-bold-r-normal--18*   Rotate #!EF mode) #!N #!I30 #!N o 
Zooming in or out of the image (  #!F-adobe-times-bold-r-normal--18*   Zoom #!EF 
mode) #!N #!I30 #!N o Changing the look-to point (the center) 
of the image (  #!F-adobe-times-bold-r-normal--18*   Roam #!EF mode) #!N #!I30 #!N 
o Panning and zooming in or out of the image ( 
 #!F-adobe-times-bold-r-normal--18*   Pan/Zoom #!EF mode) #!N #!I30 #!N o Moving the camera 
within the scene (  #!F-adobe-times-bold-r-normal--18*   Navigate #!EF mode) #!N #!I30 #!N 
o Specifying precise values for the camera settings (  #!F-adobe-times-bold-r-normal--18*   Camera 
#!EF mode) #!N #!I30 #!N o Setting probe points in the 
image (  #!F-adobe-times-bold-r-normal--18*   Cursors #!EF mode) #!N #!I30 #!N o Picking 
objects in the image (  #!F-adobe-times-bold-r-normal--18*   Pick #!EF mode) #!N #!I30 
#!N o Resizing the image #!N #!I30 #!N o Resetting previous 
views (  #!F-adobe-times-bold-r-normal--18*   Undo #!EF and  #!F-adobe-times-bold-r-normal--18*   Redo #!EF buttons). #!N 
#!I0 #!N #!EF #!N #!N #!N To select a mode, use 
its accelerator key, or do the following: #!N #!I0 #!N  #!F-adobe-times-medium-r-normal--18*   
#!N #!N #!I30 #!N 1. Click on the  #!F-adobe-times-bold-r-normal--18*   Mode #!EF 
option box. A menu of the mode options is displayed. #!N 
#!I30 #!N 2. Click on the desired option. The option box 
displays the name of the new mode. The dialog box also 
displays any additional controls for the new mode. #!N #!I0 #!N 
#!EF #!N The different modes are discussed in more detail in 
subsequent sections. Most of the modes use two or three mouse 
buttons to manipulate the view. A diagram is provided in the 
margin to the left of each section to illustrate the mouse 
button functions, the mode, and the accelerator key. #!N #!N Some 
of the modes use an overlay, which provides visual feedback before 
any action is taken to change the image. This temporary overlay 
(typically an axes diagram, rectangle, or brick) is laid over the 
image. As you drag with the mouse, the overlay changes accordingly. 
The image does not change until you release the mouse button, 
at which time it is updated according to the action you 
selected. #!N Note: If  #!F-adobe-times-bold-r-normal--18*   Execute on Change #!EF is enabled, 
Data Explorer does update the image  #!F-adobe-times-medium-i-normal--18*   while #!EF you perform 
rotation actions, and while you place probes in  #!F-adobe-times-bold-r-normal--18*   Cursors #!EF 
mode. #!N #!N #!N #!N  #!F-adobe-times-medium-i-normal--18*   Next Topic #!EF #!N #!N 
 #!Lchvudir,dxall301 h Changing Your Viewing Direction  #!EL  #!N  #!F-adobe-times-medium-i-normal--18*   #!N