--- /dev/null
+/* $XConsortium: miwideline.h,v 1.11 94/04/17 20:28:02 dpw Exp $ */
+/*
+
+Copyright (c) 1988 X Consortium
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of the X Consortium shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from the X Consortium.
+
+*/
+
+/* Author: Keith Packard, MIT X Consortium */
+
+#include "mispans.h"
+
+/*
+ * interface data to span-merging polygon filler
+ */
+
+typedef struct _SpanData {
+ SpanGroup fgGroup, bgGroup;
+} SpanDataRec, *SpanDataPtr;
+
+#define AppendSpanGroup(pGC, pixel, spanPtr, spanData) { \
+ SpanGroup *group, *othergroup = NULL; \
+ if (pixel == pGC->fgPixel) \
+ { \
+ group = &spanData->fgGroup; \
+ if (pGC->lineStyle == LineDoubleDash) \
+ othergroup = &spanData->bgGroup; \
+ } \
+ else \
+ { \
+ group = &spanData->bgGroup; \
+ othergroup = &spanData->fgGroup; \
+ } \
+ miAppendSpans (group, othergroup, spanPtr); \
+}
+
+/*
+ * Polygon edge description for integer wide-line routines
+ */
+
+typedef struct _PolyEdge {
+ int height; /* number of scanlines to process */
+ int x; /* starting x coordinate */
+ int stepx; /* fixed integral dx */
+ int signdx; /* variable dx sign */
+ int e; /* initial error term */
+ int dy;
+ int dx;
+} PolyEdgeRec, *PolyEdgePtr;
+
+#define SQSECANT 108.856472512142 /* 1/sin^2(11/2) - miter limit constant */
+
+/*
+ * types for general polygon routines
+ */
+
+typedef struct _PolyVertex {
+ double x, y;
+} PolyVertexRec, *PolyVertexPtr;
+
+typedef struct _PolySlope {
+ int dx, dy;
+ double k; /* x0 * dy - y0 * dx */
+} PolySlopeRec, *PolySlopePtr;
+
+/*
+ * Line face description for caps/joins
+ */
+
+typedef struct _LineFace {
+ double xa, ya;
+ int dx, dy;
+ int x, y;
+ double k;
+} LineFaceRec, *LineFacePtr;
+
+/*
+ * macros for polygon fillers
+ */
+
+#define MIPOLYRELOADLEFT if (!left_height && left_count) { \
+ left_height = left->height; \
+ left_x = left->x; \
+ left_stepx = left->stepx; \
+ left_signdx = left->signdx; \
+ left_e = left->e; \
+ left_dy = left->dy; \
+ left_dx = left->dx; \
+ --left_count; \
+ ++left; \
+ }
+
+#define MIPOLYRELOADRIGHT if (!right_height && right_count) { \
+ right_height = right->height; \
+ right_x = right->x; \
+ right_stepx = right->stepx; \
+ right_signdx = right->signdx; \
+ right_e = right->e; \
+ right_dy = right->dy; \
+ right_dx = right->dx; \
+ --right_count; \
+ ++right; \
+ }
+
+#define MIPOLYSTEPLEFT left_x += left_stepx; \
+ left_e += left_dx; \
+ if (left_e > 0) \
+ { \
+ left_x += left_signdx; \
+ left_e -= left_dy; \
+ }
+
+#define MIPOLYSTEPRIGHT right_x += right_stepx; \
+ right_e += right_dx; \
+ if (right_e > 0) \
+ { \
+ right_x += right_signdx; \
+ right_e -= right_dy; \
+ }
+
+#define MILINESETPIXEL(pDrawable, pGC, pixel, oldPixel) { \
+ oldPixel = pGC->fgPixel; \
+ if (pixel != oldPixel) { \
+ DoChangeGC (pGC, GCForeground, (XID *) &pixel, FALSE); \
+ ValidateGC (pDrawable, pGC); \
+ } \
+}
+#define MILINERESETPIXEL(pDrawable, pGC, pixel, oldPixel) { \
+ if (pixel != oldPixel) { \
+ DoChangeGC (pGC, GCForeground, (XID *) &oldPixel, FALSE); \
+ ValidateGC (pDrawable, pGC); \
+ } \
+}
+
+#ifdef NOINLINEICEIL
+#define ICEIL(x) ((int)ceil(x))
+#else
+#ifdef __GNUC__
+static __inline int ICEIL(x)
+ double x;
+{
+ int _cTmp = x;
+ return ((x == _cTmp) || (x < 0.0)) ? _cTmp : _cTmp+1;
+}
+#else
+#define ICEIL(x) ((((x) == (_cTmp = (x))) || ((x) < 0.0)) ? _cTmp : _cTmp+1)
+#define ICEILTEMPDECL static int _cTmp;
+#endif
+#endif
+
+extern void miFillPolyHelper(
+#if NeedFunctionPrototypes
+ DrawablePtr /*pDrawable*/,
+ GCPtr /*pGC*/,
+ unsigned long /*pixel*/,
+ SpanDataPtr /*spanData*/,
+ int /*y*/,
+ int /*overall_height*/,
+ PolyEdgePtr /*left*/,
+ PolyEdgePtr /*right*/,
+ int /*left_count*/,
+ int /*right_count*/
+#endif
+);
+extern int miRoundJoinFace(
+#if NeedFunctionPrototypes
+ LineFacePtr /*face*/,
+ PolyEdgePtr /*edge*/,
+ Bool * /*leftEdge*/
+#endif
+);
+
+extern void miRoundJoinClip(
+#if NeedFunctionPrototypes
+ LineFacePtr /*pLeft*/,
+ LineFacePtr /*pRight*/,
+ PolyEdgePtr /*edge1*/,
+ PolyEdgePtr /*edge2*/,
+ int * /*y1*/,
+ int * /*y2*/,
+ Bool * /*left1*/,
+ Bool * /*left2*/
+#endif
+);
+
+extern int miRoundCapClip(
+#if NeedFunctionPrototypes
+ LineFacePtr /*face*/,
+ Bool /*isInt*/,
+ PolyEdgePtr /*edge*/,
+ Bool * /*leftEdge*/
+#endif
+);
+
+extern void miLineProjectingCap(
+#if NeedFunctionPrototypes
+ DrawablePtr /*pDrawable*/,
+ GCPtr /*pGC*/,
+ unsigned long /*pixel*/,
+ SpanDataPtr /*spanData*/,
+ LineFacePtr /*face*/,
+ Bool /*isLeft*/,
+ double /*xorg*/,
+ double /*yorg*/,
+ Bool /*isInt*/
+#endif
+);
+
+extern SpanDataPtr miSetupSpanData(
+#if NeedFunctionPrototypes
+ GCPtr /*pGC*/,
+ SpanDataPtr /*spanData*/,
+ int /*npt*/
+#endif
+);
+
+extern void miCleanupSpanData(
+#if NeedFunctionPrototypes
+ DrawablePtr /*pDrawable*/,
+ GCPtr /*pGC*/,
+ SpanDataPtr /*spanData*/
+#endif
+);
projects / rdpsrv / blobdiff