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PolyCAD

Name and Colour

Specifies the option text identifier and color of the entity.

Name The optional text identifier of the entity
Colour The colour of the entity. Clicking in the colored square will display the colour selection dialogue box.

Location Surface

These options constrain the curve onto a surface, normally a simple plane. These options are still under development

X Defines a plane constraint along the x axis, through the first point of the curve, allowing points to be manipulated in the yz plane. The edit box defines the location of the plane along the x axis.
Y Defines a plane constraint along the y axis through the first point of the curve, allowing points to be manipulated in the xz plane. The edit box defines the location of the plane along the y axis.
Z Defines a plane constraint along the z axis through the first point of the curve, allowing points to be manipulated in the xy plane. The edit box defines the location of the plane along the z axis.
Note: All other options are under development and may cause the software to crash.

Surface Tangent

Defines the curves' surface tangent constraint.

Curve Options

Various attribute options that effect the curves shape and effect on X-Topology Surfaces which reference it.

Chord Length based Knot Vector The Cubic Spline Knot Vector based on Chord Length option
Tag Curve as Surface Boundary The Force Curve to be Surface Boundary option

Points

The parametric definition of the control polygon allowing the coordinate components of each point to be manipulated. See Editing Curve Control Points Numerically. Points grayed out are controlled by constraint relationships.