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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-src/libs/potrace/progress.h')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-src/libs/potrace/progress.h | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/libs/potrace/progress.h b/Build/source/texk/dvisvgm/dvisvgm-src/libs/potrace/progress.h deleted file mode 100644 index 5123368a7e8..00000000000 --- a/Build/source/texk/dvisvgm/dvisvgm-src/libs/potrace/progress.h +++ /dev/null @@ -1,79 +0,0 @@ -/* Copyright (C) 2001-2019 Peter Selinger. - This file is part of Potrace. It is free software and it is covered - by the GNU General Public License. See the file COPYING for details. */ - -/* operations on potrace_progress_t objects, which are defined in - potracelib.h. Note: the code attempts to minimize runtime overhead - when no progress monitoring was requested. It also tries to - minimize excessive progress calculations beneath the "epsilon" - threshold. */ - -#ifndef PROGRESS_H -#define PROGRESS_H - -/* structure to hold progress bar callback data */ -struct progress_s { - void (*callback)(double progress, void *privdata); /* callback fn */ - void *data; /* callback function's private data */ - double min, max; /* desired range of progress, e.g. 0.0 to 1.0 */ - double epsilon; /* granularity: can skip smaller increments */ - double b; /* upper limit of subrange in superrange units */ - double d_prev; /* previous value of d */ -}; -typedef struct progress_s progress_t; - -/* notify given progress object of current progress. Note that d is - given in the 0.0-1.0 range, which will be scaled and translated to - the progress object's range. */ -static inline void progress_update(double d, progress_t *prog) { - double d_scaled; - - if (prog != NULL && prog->callback != NULL) { - d_scaled = prog->min * (1-d) + prog->max * d; - if (d == 1.0 || d_scaled >= prog->d_prev + prog->epsilon) { - prog->callback(prog->min * (1-d) + prog->max * d, prog->data); - prog->d_prev = d_scaled; - } - } -} - -/* start a subrange of the given progress object. The range is - narrowed to [a..b], relative to 0.0-1.0 coordinates. If new range - is below granularity threshold, disable further subdivisions. */ -static inline void progress_subrange_start(double a, double b, const progress_t *prog, progress_t *sub) { - double min, max; - - if (prog == NULL || prog->callback == NULL) { - sub->callback = NULL; - return; - } - - min = prog->min * (1-a) + prog->max * a; - max = prog->min * (1-b) + prog->max * b; - - if (max - min < prog->epsilon) { - sub->callback = NULL; /* no further progress info in subrange */ - sub->b = b; - return; - } - sub->callback = prog->callback; - sub->data = prog->data; - sub->epsilon = prog->epsilon; - sub->min = min; - sub->max = max; - sub->d_prev = prog->d_prev; - return; -} - -static inline void progress_subrange_end(progress_t *prog, progress_t *sub) { - if (prog != NULL && prog->callback != NULL) { - if (sub->callback == NULL) { - progress_update(sub->b, prog); - } else { - prog->d_prev = sub->d_prev; - } - } -} - -#endif /* PROGRESS_H */ - |