Under Display there are 11 items. They
are mainly designed for carrying out various display options. Only
Rendering Method has sub-items. Most
items under Display are switches,
turning on/off a particular display options. These 11 items are
Show/Hide All Displayable Items,
Show/Hide Current Surface,
Show/Hide Control Net,
Show/Hide Control Points,
Show/Hide Control Point IDs,
Show/Hide Knot Curves,
Switch to Perspective/Parallel Projection,
Show All Surface IDs, and
- Show/Hide Current Surface
displays or hides the current surface.
- Show/Hide Control Net
displays or hides the control net of the current surface.
- Show/Hide Control Points
displays or hides the control points of the current surface.
- Show/Hide Control Point IDs
displays or hides the control point IDs of the current surface.
- Show/Hide Knot Curves
displays or hides the knot curves of the current surface.
- Show/Hide All Displayable Items
displays or hides the above five displays items of the current
- Display Globally/Locally
makes all subsequent display options as listed above applied
to all surface subdivisions. For example, if a surface is
subdivided into two subpatches. One of them displays knot curves,
while the other displays control points. After selecting
Display Globally, then any
display option will be applied to all subpatches. Thus, if
Show/Hide Control Net is
selected, all subpatches will be displayed with control nets.
Display Locally resets the
"global" option so that any subsequent display option will be
applied to the current surface.
- Show/Hide Axes displays or
hides the coordinate axes.
- Show All Surface IDs
displays or hide the IDs of all surfaces.
- Switch to Perspective/Parallel Projection
switches between perspective and parallel view.
- Rendering Method has two
sub-items and is applied to all
surfaces and all subpatches. Therefore, it is a global
- Patch displays
rendered surfaces and patches.
- Wireframe displays
all surfaces and patches in wireframe. There are four
levels of details
Detail Level3, and