Distance is an overloaded function with variants that operate on -either two TPoint coordinates, or on a point (TFloatPoint) and a line defined -by two additional points (TFloatPoint) values. The Distance() function is used -primarily for internal purposes (such as in Bezier2PolyLine and EccentricAngle) +either two point coordinates, or on a point and a line defined by two +additional points values. The Distance() function is used primarily for +internal purposes (such as in Bezier2PolyLine and EccentricAngle) but can be used for any purpose.
The return value is an Extended type with the calculated distance between the -argument values. +argument values. The return value is always a positive value.
-The variant using TPoint arguments calculates the length of a straight line -between the coordinates in PT1 and PT2 using the Pythagorean theorem. The -distance between identical points is always zero (0). The distance is always a -positive value. +The variants using two point arguments (TPoint or TFloatPoint) calculates the +length of a straight line between the coordinates in PT1 and PT2 using the +Pythagorean theorem. The distance between identical points is always zero (0).
-The variant with TFloatPoint arguments calculates the distance between the -point Pt and the line represented by the points in SP and EP using Euclidean -geometry. The distance is derived by finding the length of an imaginary line -between Pt and the closest point that intersects the slope of the line in SP -and EP. The distance is always a positive value. The distance for a point which -lies on the defined line is always zero (0). +The variant with three TFloatPoint arguments calculates the distance between +the point Pt and the line represented by the points in SP and EP using +Euclidean geometry. The distance is derived by finding the length of an +imaginary line between Pt and the closest point that intersects the slope of +the line in SP and EP. The distance for a point which lies on the defined line +is always zero (0).