45e9809aff7304721fddb95654901b32195c9c7avboxsyncCopyright 1988, 1998 The Open Group
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45e9809aff7304721fddb95654901b32195c9c7avboxsyncdocumentation for any purpose is hereby granted without fee, provided that
45e9809aff7304721fddb95654901b32195c9c7avboxsyncthe above copyright notice appear in all copies and that both that
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45e9809aff7304721fddb95654901b32195c9c7avboxsyncdocumentation.
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45e9809aff7304721fddb95654901b32195c9c7avboxsyncin all copies or substantial portions of the Software.
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45e9809aff7304721fddb95654901b32195c9c7avboxsync/* Author: Keith Packard, MIT X Consortium */
45e9809aff7304721fddb95654901b32195c9c7avboxsync * interface data to span-merging polygon filler
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define AppendSpanGroup(pGC, pixel, spanPtr, spanData) { \
45e9809aff7304721fddb95654901b32195c9c7avboxsync * Polygon edge description for integer wide-line routines
45e9809aff7304721fddb95654901b32195c9c7avboxsync int x; /* starting x coordinate */
45e9809aff7304721fddb95654901b32195c9c7avboxsync int e; /* initial error term */
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define SQSECANT 108.856472512142 /* 1/sin^2(11/2) - miter limit constant */
45e9809aff7304721fddb95654901b32195c9c7avboxsync * types for general polygon routines
45e9809aff7304721fddb95654901b32195c9c7avboxsync double x, y;
45e9809aff7304721fddb95654901b32195c9c7avboxsync double k; /* x0 * dy - y0 * dx */
45e9809aff7304721fddb95654901b32195c9c7avboxsync * Line face description for caps/joins
45e9809aff7304721fddb95654901b32195c9c7avboxsync * macros for polygon fillers
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define MIPOLYRELOADLEFT if (!left_height && left_count) { \
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define MIPOLYRELOADRIGHT if (!right_height && right_count) { \
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define MILINESETPIXEL(pDrawable, pGC, pixel, oldPixel) { \
45e9809aff7304721fddb95654901b32195c9c7avboxsync DoChangeGC (pGC, GCForeground, (XID *) &pixel, FALSE); \
45e9809aff7304721fddb95654901b32195c9c7avboxsync#define MILINERESETPIXEL(pDrawable, pGC, pixel, oldPixel) { \
45e9809aff7304721fddb95654901b32195c9c7avboxsync DoChangeGC (pGC, GCForeground, (XID *) &oldPixel, FALSE); \
45e9809aff7304721fddb95654901b32195c9c7avboxsync int * /*y1*/,
45e9809aff7304721fddb95654901b32195c9c7avboxsync int * /*y2*/,
45e9809aff7304721fddb95654901b32195c9c7avboxsyncextern int miPolyBuildEdge(double x0, double y0, double k, int dx, int dy,