poI3DViewCtrl GetFocalLength
Gets the focal length of the current or specified view.
Syntax
poI3DViewCtrl_handle GetFocalLength name
Application
HyperView Tcl Query
Description
The focal length value simulates the focal length of a camera lens. Adjusting this value is similar to zooming. This command retrieves a floating point value.
Inputs
- name
- If specified, the focal length of the view with that name will be returned. Otherwise, the current view’s focal length will be returned.
Example
hwi OpenStack
hwi GetSessionHandle session_handle
session_handle GetProjectHandle project_handle
project_handle GetPageHandle page_handle [project_handle GetActivePage]
page_handle GetWindowHandle window_handle [page_handle GetActiveWindow]
window_handle GetViewControlHandle view_handle
view_handle GetFocalLength "View 1"
hwi CloseStack
Error
Returns HW_Error if the name is not a valid saved view.