Overview | Statement List | Example

点，相切到曲线

Synopsis

obj = LINE/point1,{LEFT|RIGHT|point2},TANTO,curve

Description

Creates a line from specified point tangent to a previously defined curve. You may specify either a point or use the minor words RIGHT or LEFT to define which side of the curve the line should be tangent to.

If you use RIGHT or LEFT, position yourself at the point looking at the curve.

Parameters

Parameter	Description
point1	A previously defined point from which the line starts.
LEFT,RIGHT	Positional modifiers which may be used to indicate which side of the existing curve the line is tangent to, as viewed from the point to the curve. LEFT and RIGHT are not recommended for splines.
point2	A previously defined point may be used in place of the positional modifier to approximate the point of tangency.
TANTO	Minor word that indicates that the new line is to be tangent to an existing curve.
curve	An existing curve to which the new line is tangent.