InvertArc

Invert all pixels in a wedge of an oval

#include <Quickdraw.h> Quickdraw

void InvertArc( theRect, startAngle, arcAngle );

Rect *theRect ; rectangle defining position and size

short startAngle ; position where arc begins

short arcAngle ; extent of the arc

InvertArc inverts all pixels enclosed by a wedge of an oval. All black pixels

are set to white and vice versa.

theRect is the address of an 8-byte Rect structure, in local coordinates. It

defines the size and position of the oval, of which the arc is a subset.

startAngle specifies the starting position and . . .

arcAngle specifies the distance along the arc to be inverted. See FrameArc

for a description of Quickdraw "rectangular degrees" and related

information and examples.

Notes: For "old model" color, the output result of all Invertxxx functions

depends upon the device being used.

InvertArc doesn't change the pen position.

As with all Quickdraw drawing, the output is clipped to the intersection of

the current GrafPort's bitMap boundary rectangle, the port rectangle,

clipping region, and visible region.

Referenced by (2):