diff options
Diffstat (limited to 'lib/ppmdraw.h')
| -rw-r--r-- | lib/ppmdraw.h | 65 |
1 files changed, 59 insertions, 6 deletions
diff --git a/lib/ppmdraw.h b/lib/ppmdraw.h index df22b44d..5fd4148c 100644 --- a/lib/ppmdraw.h +++ b/lib/ppmdraw.h @@ -9,6 +9,7 @@ */ #include <netpbm/pm_config.h> +#include <netpbm/ppm.h> #ifdef __cplusplus extern "C" { @@ -59,6 +60,9 @@ typedef struct { } u; } ppmd_pathleg; +ppmd_pathleg +ppmd_makeLineLeg(ppmd_point const point); + typedef struct { /*---------------------------------------------------------------------------- A closed path @@ -75,9 +79,58 @@ typedef struct { as the definition of ppmd_pathleg changes. */ ppmd_pathleg * legs; + /* An array of the legs of the path, in order, starting at 'begPoint'. + */ } ppmd_path; +typedef struct { + + ppmd_path path; + /* The path we are building (or have built). + Null for path.legs means we don't have a leg array yet. + */ + + bool begIsSet; + /* User has set path.begPoint. If this is false, path.begPoint is + meaningless. + */ + + unsigned int legsAllocSize; + /* How many legs of space is allocated in the leg array path.legs */ + + bool legsAreAutoAllocated; + /* The array 'legs' is allocated or reallocated automatically by + ppmd_path_addlineline(), as opposed to being supplied by the + user as part of initializing this structure, never to be altered. + */ + +} ppmd_pathbuilder; + +ppmd_pathbuilder * +ppmd_pathbuilder_create(void); + +void +ppmd_pathbuilder_destroy(ppmd_pathbuilder * const pathBuilderP); + +void +ppmd_pathbuilder_setLegArray(ppmd_pathbuilder * const pathBuilderP, + ppmd_pathleg * const legs, + unsigned int const legCount); + +void +ppmd_pathbuilder_preallocLegArray(ppmd_pathbuilder * const pathBuilderP, + unsigned int const legCount); + +void +ppmd_pathbuilder_setBegPoint(ppmd_pathbuilder * const pathBuilderP, + ppmd_point const begPoint); + +void +ppmd_pathbuilder_addLineLeg(ppmd_pathbuilder * const pathBuilderP, + ppmd_pathleg const leg); +const ppmd_path * +ppmd_pathbuilder_pathP(ppmd_pathbuilder * const pathBuilderP); typedef void ppmd_drawprocp(pixel **, unsigned int, unsigned int, pixval, ppmd_point, const void *); @@ -272,12 +325,12 @@ ppmd_filledrectangle(pixel ** const pixels, void -ppmd_fill_path(pixel ** const pixels, - int const cols, - int const rows, - pixval const maxval, - ppmd_path * const pathP, - pixel const color); +ppmd_fill_path(pixel ** const pixels, + int const cols, + int const rows, + pixval const maxval, + const ppmd_path * const pathP, + pixel const color); /* Fills in a closed path. Not much different from ppmd_fill(), but with a different interface. */ |