SURFACE MORPHING
This menu allows the user to morph the selected surface. The dialog box is illustrated in Figure 6.5.3.
Figure 6.5.3 Surface Morphing dialog box
1.
INTERIOR
MORPHING
This function allows the user to morph a surface by selecting a control point within the surface domain. The user may morph the entire surface or a region on the surface.
¡¤
Select a surface using
the function provided in SELECT SURFACE dialog box.
¡¤ After a surface is selected, the dialog box as illustrated in Figure 6.5.4 is displayed.
Figure 6.5.4 Surface Morphing ¨C Interior
¡¤ The drop down button allows the user to select the type of constraint for morphing. The description of each constraint types is discussed in Section 6.2.1.
¡¤ If REGION is selected, the SELECT MORPH REGION button is enabled for the user to select two diagonal points on the surface to define the morphing region.
¡¤ Click on the SELECT CONTROL POINT button to select a point on the surface (or in the region if the REGION option is selected) as the control point. After point is selected, a morphing vector and U-V line are plotted at the control point. The user may click on the left mouse button following by moving the cursor to view the morphed U-V line in dynamic mode. When a desired shape is obtained, the user clicks on the left mouse button to accept the morphed surface. The surface is updated according to the new U-V lines.
¡¤ The user may toggle on checkbox of the DEFINE MORPH DIRECTION option to define a new morphing direction. Detailed description about this option is discussed in Section 6.5.1.
¡¤ UNDO aborts the last morphing operation. RESET sets the surface back to its original shape.
2. EDGE MORPHING
This function uses a point on the surface boundary as the control point. It operates similarly to the INTERIOR MORPHING function.
3. CORNER MORPHING
This function uses a corner point on the surface as the control point. It operates similarly to the INTERIOR MORPHING function.
4. SECTION LINE MORPHING
This function enables the user to modify surfaces by morphing a U or V section line on the surface.
¡¤
Select a surface by
using the function provided in SELECT SURFACE dialog box.
¡¤ After a surface is selected, the U-V lines are displayed on the surface and a dialog b ox as illustrated in Figure 6.5.5 is displayed.
¡¤ Select the CONSTRAINT TYPE as described in the INTERIOR MORPHING function.
¡¤ Click on the SELECT SECTION LINE button to select a U or V section line as control line.
Figure 6.5.5 Section Line Morphing dialog box
¡¤ Click on the SELECT MORPHING POINT button to select a control point on the selected section line. After an interior point is selected, the user may move the cursor to view the morphed U-V line in dynamic mode. When a desired shape is obtained, the user clicks on the left mouse button to accept the morphed result. The surface is updated according to the new control line.
¡¤ Toggle on checkbox of the DEFINE MORPH DIRECTION option to define a morphing vector.
¡¤ ADD SECTION LINE function allows the user to add UV section lines at the cursor location. REMOVE SECTION LINE allows the user to remove U or V section lines using mouse pick. UNDO aborts the last morphing operation. RESET sets the surface back to its original shape.