Info Program Examples Forum/eMail Links     Construct   A collection of construction methods usually used in 3D - geometry is available for the user. Construction methods as cutting line by plane, perpendicular line to plane and other can be used to design and to position geometry objects in a simplified way. There are also some constructionmethods to manage tangent lines and circles to curves.   PLANE x LINE LINE x CURVE CURVE x CURVE PLANE x CURVE PLANE x PLANE PARALLEL LINE TO g PARALLEL LINE(distance) PERPENDICULAR Line to g SYMMETRICAL lines of angle SYMMETRICAL line PERPENDICAULAR line to plane PARALLEL PLANE to plane PARALLEL PLANE (distance) PERPENDICULAR PLANE to g PERPENDICULAR plane through g to plane PERPENDICULAR between lines PLANE of SYMMETRY TRIM ROUND TANGENT LINE TANGENT LINE from P TANGENT LINE // g COMMON TANGENT of 2 curves CIRCLE P1,P2,tang.curve CIRCLE t1,t2,tang.curve CIRCLE t,P,tang.curve CIRCLE P1,P2,P3 CIRCLE t1,t2,P CIRCLE P1,P2,t PARALLELCURVE PARALLELPOLYGON EVOLVENTE   Example: perpendicular plane through P at g.     BASIC OBJECTS IMAGING TRANSFORM MODELING CONSTRUCT VARIANT EXPORT