TRANSFORM FOUR POSITIONS

Purpose:

The four positions way to transform also enables the user to accomplish a combined translate and rotate operation, through that effectively combine 'move two positions' and 'rotate two positions' operations. Using the cursor the user establishes four positions, or points, on the screen. The system creates a straight line between the first two points established. Similarly, the system creates a straight line between the third and forth points established. The first and third points establish the direction and magnitude of the translation. The angle the two lines rules the direction and magnitude of the rotation.