poIImagePlane SetBackFaceVisibility
Sets the back face visibility setting for the image plane.
Syntax
Imageplane_handle SetBackFaceVisibility val
Application
HyperView Tcl Modify
Description
When an image plane is in 3D mode, the model and image plane may get rotated so that the camera is looking at the back of the plane. The back face visibility setting determines whether the image plane remains visible when the back face is exposed. This command sets/modifies the back face visibility setting.
Inputs
- val
- True or False to indicate whether back faces should be drawn.
Example
hwi OpenStack
if {[catch {
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 GetClientHandle client_handle
client_handle GetImagePlaneCtrlHandle ipc_handle
set ipid1 [ipc_handle AddImagePlane Logo1]
ipc_handle GetImagePlaneHandle imageplane_handle $ipid1
imageplane_handle SetFileName g:/samples2/VideoOverlay/logo1.jpg
imageplane_handle SetMode background
imageplane_handle ReleaseHandle
set ipid2 [ipc_handle AddImagePlane Video1]
ipc_handle GetImagePlaneHandle imageplane_handle $ipid2
imageplane_handle SetFileName g:/samples2/VideoOverlay/video1.jpg
imageplane_handle SetMode background
imageplane_handle ReleaseHandle
ipc_handle GetImagePlaneHandle imageplane_handle $ipid1
imageplane_handle SetLabel "Company Logo";
imageplane_handle SetAlpha 80
imageplane_handle SetMode foreground
imageplane_handle SetAssociatedModelID 1
imageplane_handle SetCullAngle 45
imageplane_handle SetBackFaceVisibility true
imageplane_handle SetCrop 0.2 0.2 0.8 0.8
imageplane_handle SetStretchToFit false
imageplane_handle SetMaintainAspectRatio false
client_handle Draw
} result]} {
global errorInfo;
puts stderr $result;
puts "[session_handle GetError]";
puts stderr "*** Tcl TRACE ***";
puts stderr $errorInfo;
} else {
puts "No errors.";
puts "Warnings: ";
puts " [session_handle GetError]";
}
hwi CloseStack
Errors
Returns HW_InvalidHandle if the image plane handle is invalid.