#!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
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