Default Adjustments

An adjustment is specified by a mode and a delta. Mode defines the way of the distortion, delta defines the amount. The following modes are available: 
 
 
 
 
 Parallelogram 
 Trapezoid 
 Pin balance 
 Pincushion 
 Shift 
 Width 
 Height 
 Rotation (around bitmap image center point) 
 
 
 
 
 For each reference point and corresponding shift vector, the adjustment is computed and applied. The resulting shift vector is again cached in the warping library. This way of implementation allows incremental adjustments. 
 
 Following are tables detailing supported adjustments: 
 
 
 
 
 
 Mode Direction 
 Trapezoid 
 Parallelogram 
 Pincushion 
 Pin balance 
 
 
 Up 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Down 
 
 
 
 
 
 
 
 
 
 
 
 
 Left 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Right 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Mode Direction 
 Height 
 Width 
 Rotation 
 Shift 
 
 
 Up 
 
 
 
 
 
 
 
 
 
 
 
 
 Down 
 
 
 
 
 
 
 
 
 
 
 Left 
 
 
 
 
 
 
 
 
 
 
 
 
 Right