Adding my Bitmap2Path sample for 1on1 meeting.

include/utils/SkPathUtils.h

Index: include/utils/SkPathUtils.h
diff --git a/include/utils/SkPathUtils.h b/include/utils/SkPathUtils.h
new file mode 100644
index 0000000000000000000000000000000000000000..c10ac93293441b034fa1da6d3a0a238438f6a09f
--- /dev/null
+++ b/include/utils/SkPathUtils.h
@@ -0,0 +1,40 @@
+/*
+ *  CAUTION: EXPERIMENTAL CODE
+ *
+ *  This code is not to be used and will not be supported
+ *  if it fails on you. DO NOT USE!
+ *
+ *
+ *
+ */
+
+#ifndef SkPathUtils_DEFINED
+#define SKPathUtils_DEFINED
+
+#include "SkPath.h"
+//#include "SkPathOps.h" // this file can't be found

[reed1, 2013/06/26 16:54:24]

Not needed anyway for a header (just the impl)

+
+typedef void (*line2path)(SkPath*, const char*, int, int);

[reed1, 2013/06/26 16:54:24]

These 4 lines need not be in the header

+#define SQRT_2 1.41421356237f
+#define ON  0xFF000000 // black pixel
+#define OFF 0x00000000 // transparent pixel
+
+
+class SK_API SkPathUtils {
+public:
+    static void fillRandomBits(int chars, char* bits);
+    static int getBit(const char* buffer, int x);
+    static void line2path_pixel(SkPath* path, const char* line,
+                                int lineIdx, int width);
+    static void line2path_pixelCircle(SkPath* path, const char* line,
+                                      int lineIdx, int width);
+    static void line2path_span(SkPath* path, const char* line,
+                               int lineIdx, int width);
+    static void bitmap2path(SkPath* path, const char* bitmap,

[reed1, 2013/06/26 16:54:24]

1. I think only these last 2 need to be in the public header
2. static methods are Captialized (e.g. BitmapToPath)

+                            const line2path l2p_fn,

[reed1, 2013/06/26 16:54:24]

Since "bitmap" is a pretty loaded word in Skia, perhaps these last two are
called BitsToPath or something like that. Also need to add some documentation...

/**
 * Return the boundary path given a 1-bit bitmap, specified by width/height and
stride. The bits are interpreted as 1 being "in" the path, and 0 being "out".
The bits are interpreted as MSB on the left, and LSB on the right... etc.
*/

+                            int h, int w, int stride);
+    static void bitmap2path_region(SkPath* path, const char* bitmap,
+                                   int h, int w, int stride);
+};
+
+#endif