From bace4ea18c03bfcaadab55300bc15290f87540c7 Mon Sep 17 00:00:00 2001
From: Martin Kretzschmar <mkretzschmar@src.gnome.org>
Date: Mon, 17 May 2004 18:12:38 +0000
Subject: Initial revision

---
(limited to 'pdf/splash/SplashPath.h')

diff --git a/pdf/splash/SplashPath.h b/pdf/splash/SplashPath.h
new file mode 100644
index 0000000..8aa1a8b
--- /dev/null
+++ b/pdf/splash/SplashPath.h
@@ -0,0 +1,107 @@
+//========================================================================
+//
+// SplashPath.h
+//
+//========================================================================
+
+#ifndef SPLASHPATH_H
+#define SPLASHPATH_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "SplashTypes.h"
+
+//------------------------------------------------------------------------
+// SplashPathPoint
+//------------------------------------------------------------------------
+
+struct SplashPathPoint {
+  SplashCoord x, y;
+};
+
+//------------------------------------------------------------------------
+// SplashPath.flags
+//------------------------------------------------------------------------
+
+// first point on each subpath sets this flag
+#define splashPathFirst  0x01
+
+// last point on each subpath sets this flag
+#define splashPathLast   0x02
+
+// if the subpath is closed, its first and last points must be
+// identical, and must set this flag
+#define splashPathClosed 0x04
+
+// curve control points set this flag
+#define splashPathCurve  0x08
+
+// clockwise arc center points set this flag
+#define splashPathArcCW  0x10
+
+//------------------------------------------------------------------------
+// SplashPath
+//------------------------------------------------------------------------
+
+class SplashPath {
+public:
+
+  // Create an empty path.
+  SplashPath();
+
+  // Copy a path.
+  SplashPath *copy() { return new SplashPath(this); }
+
+  ~SplashPath();
+
+  // Append <path> to <this>.
+  void append(SplashPath *path);
+
+  // Start a new subpath.
+  SplashError moveTo(SplashCoord x, SplashCoord y);
+
+  // Add a line segment to the last subpath.
+  SplashError lineTo(SplashCoord x, SplashCoord y);
+
+  // Add a third-order (cubic) Bezier curve segment to the last
+  // subpath.
+  SplashError curveTo(SplashCoord x1, SplashCoord y1,
+		      SplashCoord x2, SplashCoord y2,
+		      SplashCoord x3, SplashCoord y3);
+
+  // Add a clockwise circular arc with center (xc, yc) and endpoint
+  // (x1, y1).
+  SplashError arcCWTo(SplashCoord x1, SplashCoord y1,
+		      SplashCoord xc, SplashCoord yc);
+
+  // Close the last subpath, adding a line segment if necessary.
+  SplashError close();
+
+  // Add (<dx>, <dy>) to every point on this path.
+  void offset(SplashCoord dx, SplashCoord dy);
+
+  // Get the current point.
+  GBool getCurPt(SplashCoord *x, SplashCoord *y);
+
+private:
+
+  SplashPath(SplashPath *path);
+  void grow(int nPts);
+  GBool noCurrentPoint() { return curSubpath == length; }
+  GBool onePointSubpath() { return curSubpath == length - 1; }
+  GBool openSubpath() { return curSubpath < length - 1; }
+
+  SplashPathPoint *pts;		// array of points
+  Guchar *flags;		// array of flags
+  int length, size;		// length/size of the pts and flags arrays
+  int curSubpath;		// index of first point in last subpath
+
+  friend class SplashXPath;
+  friend class Splash;
+};
+
+#endif
--
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