TroughFactor      573 magick/decorate.c                   q[x].red=(Quantum) ((q[x].red*TroughFactor+
TroughFactor      574 magick/decorate.c                                        background*(MaxRGBDouble-TroughFactor))/MaxRGBDouble+0.5);
TroughFactor      575 magick/decorate.c                   q[x].green=(Quantum) ((q[x].green*TroughFactor+
TroughFactor      576 magick/decorate.c                                          background*(MaxRGBDouble-TroughFactor))/MaxRGBDouble+0.5);
TroughFactor      577 magick/decorate.c                   q[x].blue=(Quantum) ((q[x].blue*TroughFactor+
TroughFactor      578 magick/decorate.c                                         background*(MaxRGBDouble-TroughFactor))/MaxRGBDouble+0.5);