From 1fd361a1ea06e44286c213ca1f814f49306fdc43 Mon Sep 17 00:00:00 2001 From: giraffedata Date: Sat, 19 Aug 2006 03:12:28 +0000 Subject: Create Subversion repository git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1 9d0c8265-081b-0410-96cb-a4ca84ce46f8 --- converter/other/pamtosvg/pxl-outline.h | 79 ++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 converter/other/pamtosvg/pxl-outline.h (limited to 'converter/other/pamtosvg/pxl-outline.h') diff --git a/converter/other/pamtosvg/pxl-outline.h b/converter/other/pamtosvg/pxl-outline.h new file mode 100644 index 00000000..e37ccaf6 --- /dev/null +++ b/converter/other/pamtosvg/pxl-outline.h @@ -0,0 +1,79 @@ +/* pxl-outline.h: find a list of outlines which make up one character. */ + +#ifndef PXL_OUTLINE_H +#define PXL_OUTLINE_H + +#include "ppm.h" + +#include "autotrace.h" +#include "exception.h" +#include "bitmap.h" + +/* This is a list of contiguous points on the bitmap. */ +typedef struct +{ + pm_pixelcoord * data; + unsigned length; + bool clockwise; + pixel color; + bool open; +} pixel_outline_type; + + +/* The Nth coordinate in the list. */ +#define O_COORDINATE(p_o, n) ((p_o).data[n]) + + +/* The length of the list. */ +#define O_LENGTH(p_o) ((p_o).length) + +/* Whether the outline moves clockwise or counterclockwise. */ +#define O_CLOCKWISE(p_o) ((p_o).clockwise) + +/* Since a pixel outline is cyclic, the index of the next coordinate + after the last is the first, and the previous coordinate before the + first is the last. */ +#define O_NEXT(p_o, n) (((n) + 1) % O_LENGTH (p_o)) +#define O_PREV(p_o, n) ((n) == 0 \ + ? O_LENGTH (p_o) - 1 \ + : (n) - 1) + +/* And the character turns into a list of such lists. */ +typedef struct +{ + pixel_outline_type *data; + unsigned length; +} pixel_outline_list_type; + +/* The Nth list in the list of lists. */ +#define O_LIST_OUTLINE(p_o_l, n) ((p_o_l).data[n]) + +/* The length of the list of lists. */ +#define O_LIST_LENGTH(p_o_l) ((p_o_l).length) + +/* Find all pixels on the outline in the character C. */ +pixel_outline_list_type +find_outline_pixels (bitmap_type const type, + bool const bg_spec, + pixel const bg_color, + at_progress_func notify_progress, + void * const progress_data, + at_testcancel_func test_cancel, + void * const testcancel_data, + at_exception_type * const exp); + +/* Find all pixels on the center line of the character C. */ +pixel_outline_list_type +find_centerline_pixels (bitmap_type const type, + pixel const bg_color, + at_progress_func notify_progress, + void * const progress_data, + at_testcancel_func test_cancel, + void * const testcancel_data, + at_exception_type * const exp); + +/* Free the memory in the list. */ +extern void +free_pixel_outline_list (pixel_outline_list_type *); + +#endif /* not PXL_OUTLINE_H */ -- cgit 1.4.1