You can create several types of reference points to use as construction objects. You can also create multiple reference points that are a specified distance apart on curves. Click View, RefGeom, Ref Point to toggle the display of reference points.
To create a ref-point:
Click Point(Reference Geometry toolbar) or click Geometry, Reference Geometry, Reference Point.
In the dialog, select the type of you want to create the point:
Parameters. Create a point by coordinates. You can also select a local coordindate system and give the coordinates related to this local coordinate system.
Cir/Sph/Con.... Create a point using center of circle, ellipse, parabola, hyperbola, sphere, torus, or apex of cone.
Cur/Cur Inter . Creates reference points at the intersection of the two selected curves or ref-axes. If the two curves are not intersected with each other, you can evaluate related points using the extrema mode. For example, two circles at the same plane, but far from each other, you can get the farthest and nearest points' pairs in two circles using the extrema mode.
Cur/Surf Inter. Creates reference points at the intersection of the selected curve and surface. You can select edge, reference axis, face and reference plane.
To Cur/Surf. Create reference points by picking positions on edge or face.
3 Points Arc. Create a reference point which locates at the center of the circle which created by selected 3 points. You can select vertex, referece point, node, or pick position on edge or face.
Sample Cur. Sample points from curve by methods: Uniform, Curvature and Control Points. Uniform: sample the curve uniformly by distance. Curvature: sample the curve curvaturally. Control Points: if the selected curve is b-spline curve, the sample points are the control points of the b-spline curve. If the curve is not a bspline curve, we will create a bspline curve internally.
a. Sample curve uniformally by given number of points 10. |
b. Sample curve curvaturally. |
c. Sample curve by control points. |
Sample Surf . Sample points from surface by methods: Uniform, Curvature and Control Points. Uniform: sample the surface uniformly in U and V direction. Curvature: sample the surface curvaturally. Control Points: if the selected surface is a b-spline surface, the sample points are the control points of the b-spline surface. If it is not a bspline surface, we will create a bspline surface internally.
Points Avg. Create a point which locate at the barycenter of the selected points.