dropped miregion and all the X stuff in favour of Wez' sraRegion, added dox

1 files changed, 56 insertions, 0 deletions

diff --git a/sraRegion.h b/sraRegion.h
new file mode 100755
index 0000000..d0348cc
--- /dev/null
+++ b/sraRegion.h
@@ -0,0 +1,56 @@
+/* -=- SRA - Simple Region Algorithm

+ * A simple rectangular region implementation.

+ * Copyright (c) 2001 James "Wez" Weatherall, Johannes E. Schindelin

+ */

+

+/* -=- sraRect */

+

+typedef struct _rect {

+	int x1;

+	int y1;

+	int x2;

+	int y2;

+} sraRect;

+

+//struct sraRegion;

+typedef struct sraRegion sraRegion;

+

+/* -=- Region manipulation functions */

+

+extern sraRegion *sraRgnCreate();

+extern sraRegion *sraRgnCreateRect(int x1, int y1, int x2, int y2);

+extern sraRegion *sraRgnCreateRgn(const sraRegion *src);

+

+extern void sraRgnDestroy(sraRegion *rgn);

+extern void sraRgnMakeEmpty(sraRegion *rgn);

+extern Bool sraRgnAnd(sraRegion *dst, const sraRegion *src);

+extern void sraRgnOr(sraRegion *dst, const sraRegion *src);

+extern Bool sraRgnSubtract(sraRegion *dst, const sraRegion *src);

+

+extern void sraRgnOffset(sraRegion *dst, int dx, int dy);

+

+extern Bool sraRgnPopRect(sraRegion *region, sraRect *rect,

+			  unsigned long flags);

+

+extern unsigned long sraRgnCountRects(const sraRegion *rgn);

+extern Bool sraRgnEmpty(const sraRegion *rgn);

+

+/* -=- rectangle iterator */

+

+typedef struct sraRectangleIterator {

+  Bool reverseX,reverseY;

+  int ptrSize,ptrPos;

+  struct sraSpan** sPtrs;

+} sraRectangleIterator;

+

+extern sraRectangleIterator *sraRgnGetIterator(sraRegion *s);

+extern sraRectangleIterator *sraRgnGetReverseIterator(sraRegion *s,Bool reverseX,Bool reverseY);

+extern Bool sraRgnIteratorNext(sraRectangleIterator *i,sraRect *r);

+extern void sraRgnReleaseIterator(sraRectangleIterator *i);

+

+void sraRgnPrint(const sraRegion *s);

+

+/* -=- Rectangle clipper (for speed) */

+

+extern Bool sraClipRect(int *x, int *y, int *w, int *h,

+			int cx, int cy, int cw, int ch);