-/* Description:
- * Each constraint uses a set of parameters. In the SolveSpace library
- * these parameters are named "valA", "ptA", "ptB", "entityA", "entityB".
- * The "ptA" and "ptB" parameters represents a point in the constraint.
- * The "entityA" and "entityB" represents any other object (and a point too).
- * And the "valA" represents a real value.
- *
- * The attributes below are named corresponding to the SolveSpace,
- * some of them may be unused. The list of used attributes is defined
- * inside the certain constraint.
- */
-/// The value parameter for the constraint
-const std::string CONSTRAINT_ATTR_VALUE("ConstraintValueA");
-/// First point for the constraint
-const std::string CONSTRAINT_ATTR_POINT_A("ConstraintPointA");
-/// Second point for the constraint
-const std::string CONSTRAINT_ATTR_POINT_B("ConstraintPointB");
-/// First entity for the constraint
-const std::string CONSTRAINT_ATTR_ENTITY_A("ConstraintEntityA");
-/// Second entity for the constraint
-const std::string CONSTRAINT_ATTR_ENTITY_B("ConstraintEntityB");