miwideline.h revision b8e299dddd091ae24e0c08c45d91b8f937bd14d2
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* $Xorg: miwideline.h,v 1.4 2001/02/09 02:05:22 xorgcvs Exp $ */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncCopyright 1988, 1998 The Open Group
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b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncdocumentation for any purpose is hereby granted without fee, provided that
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b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsynccopyright notice and this permission notice appear in supporting
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncdocumentation.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncThe above copyright notice and this permission notice shall be included
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncin all copies or substantial portions of the Software.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncTHE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncnot be used in advertising or otherwise to promote the sale, use or
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b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncfrom The Open Group.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* $XFree86: xc/programs/Xserver/mi/miwideline.h,v 1.11 2001/10/25 12:03:47 alanh Exp $ */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/* Author: Keith Packard, MIT X Consortium */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * interface data to span-merging polygon filler
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsynctypedef struct _SpanData {
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define AppendSpanGroup(pGC, pixel, spanPtr, spanData) { \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Polygon edge description for integer wide-line routines
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsynctypedef struct _PolyEdge {
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int x; /* starting x coordinate */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int e; /* initial error term */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SQSECANT 108.856472512142 /* 1/sin^2(11/2) - miter limit constant */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * types for general polygon routines
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsynctypedef struct _PolyVertex {
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync double x, y;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsynctypedef struct _PolySlope {
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync double k; /* x0 * dy - y0 * dx */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Line face description for caps/joins
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsynctypedef struct _LineFace {
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * macros for polygon fillers
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define MIPOLYRELOADLEFT if (!left_height && left_count) { \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define MIPOLYRELOADRIGHT if (!right_height && right_count) { \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define MILINESETPIXEL(pDrawable, pGC, pixel, oldPixel) { \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync DoChangeGC (pGC, GCForeground, (XID *) &pixel, FALSE); \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define MILINERESETPIXEL(pDrawable, pGC, pixel, oldPixel) { \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync DoChangeGC (pGC, GCForeground, (XID *) &oldPixel, FALSE); \
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync unsigned long /*pixel*/,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int /*overall_height*/,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int /*left_count*/,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int /*right_count*/
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int * /*y1*/,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int * /*y2*/,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync unsigned long /*pixel*/,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync double /*xorg*/,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync double /*yorg*/,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int /*npt*/
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncextern int miPolyBuildEdge(double x0, double y0, double k, int dx, int dy,