This
function enables the user to flip certain regions of the binder to change the
binder to a desired shape, as illustrated in Figure 7.2.62.
Figure 7.2.62 Butterfly interface
·
CONTROL LINES
This
function is used to list the added control lines information. Select a control
line in the list by cursor and double click on the left mouse button. The
program will automatically display the corresponding serial numbers for all
control lines for the user to identify the serial number of control lines in
the list. Therefore, the user can select this serial number to perform edit and
delete operations.
·
ADD
This
function allows the user to add control lines on the binder. Click on this
button and select two points on the binder to generate a control line. The
program will simultaneously pop up a 2D window, as shown in Figure 7.2.63. In this 2D window, it will display the section line
on the control line and the part section line cut by the section line. The user
can change the binder by editing the section line so that the binder will be
more suitable for the part.
Figure 7.2.63 Butterfly 2D Window
·
EDIT
This
function allows the user to edit control lines. Select the control lines to be
edited in Control Lines list and the 2D window appears. The user can change the
parameters in this window to re-edit the flipped region of the binder.
·
REMOVE
This
function allows the user to remove the unnecessary control lines and restore
the flipped regions on binder simultaneously.
The functions
for 2D window are described below.
The
user can change the shape of part section line cut by the section line on
control line via moving the slider. The user can enter the Fold value and push
the <ENTER> key to set the angle between the section line on the control
line and the binder, or drag the endpoint of the section line by moving the
cursor up and down to control the size of the control angle. The user can enter
the Radius value and push the <ENTER> key to set the radius of transition
surface for the flipped region of binder, or directly drag the circle by cursor
to control the radius. Click on the Swap button to change the direction of
section line, as shown in Figure 7.2.64(b). The user can drag the endpoint of the section
line to change the cutting range of it by clicking on Edit button.
(a) (b)
Figure 7.2.64 Edit Section Line