R6.6 is the Xorg base-lineXORG-MAIN

1 files changed, 244 insertions, 0 deletions

diff --git a/mi/miwideline.h b/mi/miwideline.h
new file mode 100644
index 000000000..71d2c369c
--- /dev/null
+++ b/mi/miwideline.h
@@ -0,0 +1,244 @@
+/* $Xorg: miwideline.h,v 1.4 2001/02/09 02:05:22 xorgcvs Exp $ */
+/*
+
+Copyright 1988, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+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 OPEN GROUP 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 Open Group 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 Open Group.
+
+*/
+
+/* 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
+);