Surface data :
Control point : set control point number in the U-direction and V-direction. This parameter is set in default, user can skip and use the default number.
Degree: set surface degree in u-direction and v-direction.
Computation setting :
G1 continuity with neighbor patch: when you checked this button, the created surface will be G1 continuous to the neighbor patch on the boundary line, otherwise the surface is G0 continuous to the neighbor patch on the boundary line.
Add knot: when you checked this button, new control point will be added in the surface for next computation in order to reduce the tolerance quickly.
Frequency: computation number for one time. It is often set as from 5 to 20. The bigger number will cost more computation time.
max position deviation: the threshold of position deviation for G0 continuity between new surface and the neighbor patch on the boundary edge.
max normal deviation: the threshold of normal vector deviation angle for G1 continuity between new surface and the neighbor patch on the boundary edge.
smoothness: the smoothness of the new surface.
Show: check this button to show G0/G1 continuity tolerance on the sampled data.
this picture shows the G0 continuity report
this picture shows the G1 continuity report
continuity: continuity type for G0 or G1 for deviation display.
Preview: user set the surface control point number and degree number, then click this button to create an initial surface.
Refine: user clicks this button to refine the surface. After a surface is generated, if the tolerance is not satisfactory, continue to click this button to get a surface with better tolerance. After this button is clicked, the check box 'G1 continuity with neighbor patch' will be disabled.