GGCM Simple Constraint

From DocR23

A simple constraint refers to exactly two geometric entities. There are four types of simple constraints supported by the GGCM-ACIS Bridge, each with a function or a Scheme command to create them:

Contents 1 Angle Constraint 2 Distance Constraint 3 Incidence Constraint 4 Tangent Constraint

Angle Constraint

• Satisfied if the minor angle between the two entities is equal to the client required angle.
• Can be applied to two lines, two planes or a plane and a line.

Distance Constraint

• Satisfied if the distance between two entities is equal to the client required distance.
• Can be applied to pairs of points, lines or planes.

Note:

• plane/plane requires an angle constraint of 0 or Π
• plane/line requires an angle constraint of Π/2

Incidence Constraint

• Satisfied if the distance from a point to a curve is zero.
• Can be applied to a point and a curve. (The point could be an end-point.)

Tangent Constraint

• Satisfied if the angle between the line and curve is zero or Π and the distance from the line to the curve is zero.
• Can be applied to a line and a curve.