mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-11-24 11:09:06 +08:00
ec026cadfe
git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@876 d0cd1f9f-072b-0410-8dd7-cf729c803f20
586 lines
20 KiB
C++
586 lines
20 KiB
C++
/**********************************************************************
|
|
* File: polyaprx.cpp (Formerly polygon.c)
|
|
* Description: Code for polygonal approximation from old edgeprog.
|
|
* Author: Ray Smith
|
|
* Created: Thu Nov 25 11:42:04 GMT 1993
|
|
*
|
|
* (C) Copyright 1993, Hewlett-Packard Ltd.
|
|
** Licensed under the Apache License, Version 2.0 (the "License");
|
|
** you may not use this file except in compliance with the License.
|
|
** You may obtain a copy of the License at
|
|
** http://www.apache.org/licenses/LICENSE-2.0
|
|
** Unless required by applicable law or agreed to in writing, software
|
|
** distributed under the License is distributed on an "AS IS" BASIS,
|
|
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
** See the License for the specific language governing permissions and
|
|
** limitations under the License.
|
|
*
|
|
**********************************************************************/
|
|
|
|
#include <stdio.h>
|
|
#ifdef __UNIX__
|
|
#include <assert.h>
|
|
#endif
|
|
#define FASTEDGELENGTH 256
|
|
#include "polyaprx.h"
|
|
#include "params.h"
|
|
#include "tprintf.h"
|
|
|
|
#define EXTERN
|
|
|
|
EXTERN BOOL_VAR(poly_debug, FALSE, "Debug old poly");
|
|
EXTERN BOOL_VAR(poly_wide_objects_better, TRUE,
|
|
"More accurate approx on wide things");
|
|
|
|
#define FIXED 4 /*OUTLINE point is fixed */
|
|
|
|
#define RUNLENGTH 1 /*length of run */
|
|
|
|
#define DIR 2 /*direction of run */
|
|
|
|
#define FLAGS 0
|
|
|
|
#define fixed_dist 20 //really an int_variable
|
|
#define approx_dist 15 //really an int_variable
|
|
|
|
const int par1 = 4500 / (approx_dist * approx_dist);
|
|
const int par2 = 6750 / (approx_dist * approx_dist);
|
|
|
|
|
|
/**********************************************************************
|
|
* tesspoly_outline
|
|
*
|
|
* Approximate an outline from chain codes form using the old tess algorithm.
|
|
* If allow_detailed_fx is true, the EDGEPTs in the returned TBLOB
|
|
* contain pointers to the input C_OUTLINEs that enable higher-resolution
|
|
* feature extraction that does not use the polygonal approximation.
|
|
**********************************************************************/
|
|
|
|
|
|
TESSLINE* ApproximateOutline(bool allow_detailed_fx, C_OUTLINE* c_outline) {
|
|
EDGEPT *edgept; // converted steps
|
|
TBOX loop_box; // bounding box
|
|
inT32 area; // loop area
|
|
EDGEPT stack_edgepts[FASTEDGELENGTH]; // converted path
|
|
EDGEPT* edgepts = stack_edgepts;
|
|
|
|
// Use heap memory if the stack buffer is not big enough.
|
|
if (c_outline->pathlength() > FASTEDGELENGTH)
|
|
edgepts = new EDGEPT[c_outline->pathlength()];
|
|
|
|
loop_box = c_outline->bounding_box();
|
|
area = loop_box.height();
|
|
if (!poly_wide_objects_better && loop_box.width() > area)
|
|
area = loop_box.width();
|
|
area *= area;
|
|
edgept = edgesteps_to_edgepts(c_outline, edgepts);
|
|
fix2(edgepts, area);
|
|
edgept = poly2 (edgepts, area); // 2nd approximation.
|
|
EDGEPT* startpt = edgept;
|
|
EDGEPT* result = NULL;
|
|
EDGEPT* prev_result = NULL;
|
|
do {
|
|
EDGEPT* new_pt = new EDGEPT;
|
|
new_pt->pos = edgept->pos;
|
|
new_pt->prev = prev_result;
|
|
if (prev_result == NULL) {
|
|
result = new_pt;
|
|
} else {
|
|
prev_result->next = new_pt;
|
|
new_pt->prev = prev_result;
|
|
}
|
|
if (allow_detailed_fx) {
|
|
new_pt->src_outline = edgept->src_outline;
|
|
new_pt->start_step = edgept->start_step;
|
|
new_pt->step_count = edgept->step_count;
|
|
}
|
|
prev_result = new_pt;
|
|
edgept = edgept->next;
|
|
}
|
|
while (edgept != startpt);
|
|
prev_result->next = result;
|
|
result->prev = prev_result;
|
|
if (edgepts != stack_edgepts)
|
|
delete [] edgepts;
|
|
return TESSLINE::BuildFromOutlineList(result);
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* edgesteps_to_edgepts
|
|
*
|
|
* Convert a C_OUTLINE to EDGEPTs.
|
|
**********************************************************************/
|
|
|
|
EDGEPT *
|
|
edgesteps_to_edgepts ( //convert outline
|
|
C_OUTLINE * c_outline, //input
|
|
EDGEPT edgepts[] //output is array
|
|
) {
|
|
inT32 length; //steps in path
|
|
ICOORD pos; //current coords
|
|
inT32 stepindex; //current step
|
|
inT32 stepinc; //increment
|
|
inT32 epindex; //current EDGEPT
|
|
inT32 count; //repeated steps
|
|
ICOORD vec; //for this 8 step
|
|
ICOORD prev_vec;
|
|
inT8 epdir; //of this step
|
|
DIR128 prevdir; //prvious dir
|
|
DIR128 dir; //of this step
|
|
|
|
pos = c_outline->start_pos (); //start of loop
|
|
length = c_outline->pathlength ();
|
|
stepindex = 0;
|
|
epindex = 0;
|
|
prevdir = -1;
|
|
count = 0;
|
|
int prev_stepindex = 0;
|
|
do {
|
|
dir = c_outline->step_dir (stepindex);
|
|
vec = c_outline->step (stepindex);
|
|
if (stepindex < length - 1
|
|
&& c_outline->step_dir (stepindex + 1) - dir == -32) {
|
|
dir += 128 - 16;
|
|
vec += c_outline->step (stepindex + 1);
|
|
stepinc = 2;
|
|
}
|
|
else
|
|
stepinc = 1;
|
|
if (count == 0) {
|
|
prevdir = dir;
|
|
prev_vec = vec;
|
|
}
|
|
if (prevdir.get_dir () != dir.get_dir ()) {
|
|
edgepts[epindex].pos.x = pos.x ();
|
|
edgepts[epindex].pos.y = pos.y ();
|
|
prev_vec *= count;
|
|
edgepts[epindex].vec.x = prev_vec.x ();
|
|
edgepts[epindex].vec.y = prev_vec.y ();
|
|
pos += prev_vec;
|
|
edgepts[epindex].flags[RUNLENGTH] = count;
|
|
edgepts[epindex].prev = &edgepts[epindex - 1];
|
|
edgepts[epindex].flags[FLAGS] = 0;
|
|
edgepts[epindex].next = &edgepts[epindex + 1];
|
|
prevdir += 64;
|
|
epdir = (DIR128) 0 - prevdir;
|
|
epdir >>= 4;
|
|
epdir &= 7;
|
|
edgepts[epindex].flags[DIR] = epdir;
|
|
edgepts[epindex].src_outline = c_outline;
|
|
edgepts[epindex].start_step = prev_stepindex;
|
|
edgepts[epindex].step_count = stepindex - prev_stepindex;
|
|
epindex++;
|
|
prevdir = dir;
|
|
prev_vec = vec;
|
|
count = 1;
|
|
prev_stepindex = stepindex;
|
|
}
|
|
else
|
|
count++;
|
|
stepindex += stepinc;
|
|
}
|
|
while (stepindex < length);
|
|
edgepts[epindex].pos.x = pos.x ();
|
|
edgepts[epindex].pos.y = pos.y ();
|
|
prev_vec *= count;
|
|
edgepts[epindex].vec.x = prev_vec.x ();
|
|
edgepts[epindex].vec.y = prev_vec.y ();
|
|
pos += prev_vec;
|
|
edgepts[epindex].flags[RUNLENGTH] = count;
|
|
edgepts[epindex].flags[FLAGS] = 0;
|
|
edgepts[epindex].src_outline = c_outline;
|
|
edgepts[epindex].start_step = prev_stepindex;
|
|
edgepts[epindex].step_count = stepindex - prev_stepindex;
|
|
edgepts[epindex].prev = &edgepts[epindex - 1];
|
|
edgepts[epindex].next = &edgepts[0];
|
|
prevdir += 64;
|
|
epdir = (DIR128) 0 - prevdir;
|
|
epdir >>= 4;
|
|
epdir &= 7;
|
|
edgepts[epindex].flags[DIR] = epdir;
|
|
edgepts[0].prev = &edgepts[epindex];
|
|
ASSERT_HOST (pos.x () == c_outline->start_pos ().x ()
|
|
&& pos.y () == c_outline->start_pos ().y ());
|
|
return &edgepts[0];
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
*fix2(start,area) fixes points on the outline according to a trial method*
|
|
**********************************************************************/
|
|
|
|
//#pragma OPT_LEVEL 1 /*stop compiler bugs*/
|
|
|
|
void fix2( //polygonal approx
|
|
EDGEPT *start, /*loop to approimate */
|
|
int area) {
|
|
register EDGEPT *edgept; /*current point */
|
|
register EDGEPT *edgept1;
|
|
register EDGEPT *loopstart; /*modified start of loop */
|
|
register EDGEPT *linestart; /*start of line segment */
|
|
register int dir1, dir2; /*directions of line */
|
|
register int sum1, sum2; /*lengths in dir1,dir2 */
|
|
int stopped; /*completed flag */
|
|
int fixed_count; //no of fixed points
|
|
int d01, d12, d23, gapmin;
|
|
TPOINT d01vec, d12vec, d23vec;
|
|
register EDGEPT *edgefix, *startfix;
|
|
register EDGEPT *edgefix0, *edgefix1, *edgefix2, *edgefix3;
|
|
|
|
edgept = start; /*start of loop */
|
|
while (((edgept->flags[DIR] - edgept->prev->flags[DIR] + 1) & 7) < 3
|
|
&& (dir1 =
|
|
(edgept->prev->flags[DIR] - edgept->next->flags[DIR]) & 7) != 2
|
|
&& dir1 != 6)
|
|
edgept = edgept->next; /*find suitable start */
|
|
loopstart = edgept; /*remember start */
|
|
|
|
stopped = 0; /*not finished yet */
|
|
edgept->flags[FLAGS] |= FIXED; /*fix it */
|
|
do {
|
|
linestart = edgept; /*possible start of line */
|
|
dir1 = edgept->flags[DIR]; /*first direction */
|
|
/*length of dir1 */
|
|
sum1 = edgept->flags[RUNLENGTH];
|
|
edgept = edgept->next;
|
|
dir2 = edgept->flags[DIR]; /*2nd direction */
|
|
/*length in dir2 */
|
|
sum2 = edgept->flags[RUNLENGTH];
|
|
if (((dir1 - dir2 + 1) & 7) < 3) {
|
|
while (edgept->prev->flags[DIR] == edgept->next->flags[DIR]) {
|
|
edgept = edgept->next; /*look at next */
|
|
if (edgept->flags[DIR] == dir1)
|
|
/*sum lengths */
|
|
sum1 += edgept->flags[RUNLENGTH];
|
|
else
|
|
sum2 += edgept->flags[RUNLENGTH];
|
|
}
|
|
|
|
if (edgept == loopstart)
|
|
stopped = 1; /*finished */
|
|
if (sum2 + sum1 > 2
|
|
&& linestart->prev->flags[DIR] == dir2
|
|
&& (linestart->prev->flags[RUNLENGTH] >
|
|
linestart->flags[RUNLENGTH] || sum2 > sum1)) {
|
|
/*start is back one */
|
|
linestart = linestart->prev;
|
|
linestart->flags[FLAGS] |= FIXED;
|
|
}
|
|
|
|
if (((edgept->next->flags[DIR] - edgept->flags[DIR] + 1) & 7) >= 3
|
|
|| (edgept->flags[DIR] == dir1 && sum1 >= sum2)
|
|
|| ((edgept->prev->flags[RUNLENGTH] < edgept->flags[RUNLENGTH]
|
|
|| (edgept->flags[DIR] == dir2 && sum2 >= sum1))
|
|
&& linestart->next != edgept))
|
|
edgept = edgept->next;
|
|
}
|
|
/*sharp bend */
|
|
edgept->flags[FLAGS] |= FIXED;
|
|
}
|
|
/*do whole loop */
|
|
while (edgept != loopstart && !stopped);
|
|
|
|
edgept = start;
|
|
do {
|
|
if (((edgept->flags[RUNLENGTH] >= 8) &&
|
|
(edgept->flags[DIR] != 2) && (edgept->flags[DIR] != 6)) ||
|
|
((edgept->flags[RUNLENGTH] >= 8) &&
|
|
((edgept->flags[DIR] == 2) || (edgept->flags[DIR] == 6)))) {
|
|
edgept->flags[FLAGS] |= FIXED;
|
|
edgept1 = edgept->next;
|
|
edgept1->flags[FLAGS] |= FIXED;
|
|
}
|
|
edgept = edgept->next;
|
|
}
|
|
while (edgept != start);
|
|
|
|
edgept = start;
|
|
do {
|
|
/*single fixed step */
|
|
if (edgept->flags[FLAGS] & FIXED && edgept->flags[RUNLENGTH] == 1
|
|
/*and neighours free */
|
|
&& edgept->next->flags[FLAGS] & FIXED && (edgept->prev->flags[FLAGS] & FIXED) == 0
|
|
/*same pair of dirs */
|
|
&& (edgept->next->next->flags[FLAGS] & FIXED) == 0 && edgept->prev->flags[DIR] == edgept->next->flags[DIR] && edgept->prev->prev->flags[DIR] == edgept->next->next->flags[DIR]
|
|
&& ((edgept->prev->flags[DIR] - edgept->flags[DIR] + 1) & 7) < 3) {
|
|
/*unfix it */
|
|
edgept->flags[FLAGS] &= ~FIXED;
|
|
edgept->next->flags[FLAGS] &= ~FIXED;
|
|
}
|
|
edgept = edgept->next; /*do all points */
|
|
}
|
|
while (edgept != start); /*until finished */
|
|
|
|
stopped = 0;
|
|
if (area < 450)
|
|
area = 450;
|
|
|
|
gapmin = area * fixed_dist * fixed_dist / 44000;
|
|
|
|
edgept = start;
|
|
fixed_count = 0;
|
|
do {
|
|
if (edgept->flags[FLAGS] & FIXED)
|
|
fixed_count++;
|
|
edgept = edgept->next;
|
|
}
|
|
while (edgept != start);
|
|
while ((edgept->flags[FLAGS] & FIXED) == 0)
|
|
edgept = edgept->next;
|
|
edgefix0 = edgept;
|
|
|
|
edgept = edgept->next;
|
|
while ((edgept->flags[FLAGS] & FIXED) == 0)
|
|
edgept = edgept->next;
|
|
edgefix1 = edgept;
|
|
|
|
edgept = edgept->next;
|
|
while ((edgept->flags[FLAGS] & FIXED) == 0)
|
|
edgept = edgept->next;
|
|
edgefix2 = edgept;
|
|
|
|
edgept = edgept->next;
|
|
while ((edgept->flags[FLAGS] & FIXED) == 0)
|
|
edgept = edgept->next;
|
|
edgefix3 = edgept;
|
|
|
|
startfix = edgefix2;
|
|
|
|
do {
|
|
if (fixed_count <= 3)
|
|
break; //already too few
|
|
point_diff (d12vec, edgefix1->pos, edgefix2->pos);
|
|
d12 = LENGTH (d12vec);
|
|
// TODO(rays) investigate this change:
|
|
// Only unfix a point if it is part of a low-curvature section
|
|
// of outline and the total angle change of the outlines is
|
|
// less than 90 degrees, ie the scalar product is positive.
|
|
// if (d12 <= gapmin && SCALAR(edgefix0->vec, edgefix2->vec) > 0) {
|
|
if (d12 <= gapmin) {
|
|
point_diff (d01vec, edgefix0->pos, edgefix1->pos);
|
|
d01 = LENGTH (d01vec);
|
|
point_diff (d23vec, edgefix2->pos, edgefix3->pos);
|
|
d23 = LENGTH (d23vec);
|
|
if (d01 > d23) {
|
|
edgefix2->flags[FLAGS] &= ~FIXED;
|
|
fixed_count--;
|
|
}
|
|
else {
|
|
edgefix1->flags[FLAGS] &= ~FIXED;
|
|
fixed_count--;
|
|
edgefix1 = edgefix2;
|
|
}
|
|
}
|
|
else {
|
|
edgefix0 = edgefix1;
|
|
edgefix1 = edgefix2;
|
|
}
|
|
edgefix2 = edgefix3;
|
|
edgept = edgept->next;
|
|
while ((edgept->flags[FLAGS] & FIXED) == 0) {
|
|
if (edgept == startfix)
|
|
stopped = 1;
|
|
edgept = edgept->next;
|
|
}
|
|
edgefix3 = edgept;
|
|
edgefix = edgefix2;
|
|
}
|
|
while ((edgefix != startfix) && (!stopped));
|
|
}
|
|
|
|
|
|
//#pragma OPT_LEVEL 2 /*stop compiler bugs*/
|
|
|
|
/**********************************************************************
|
|
*poly2(startpt,area,path) applies a second approximation to the outline
|
|
*using the points which have been fixed by the first approximation*
|
|
**********************************************************************/
|
|
|
|
EDGEPT *poly2( //second poly
|
|
EDGEPT *startpt, /*start of loop */
|
|
int area /*area of blob box */
|
|
) {
|
|
register EDGEPT *edgept; /*current outline point */
|
|
EDGEPT *loopstart; /*starting point */
|
|
register EDGEPT *linestart; /*start of line */
|
|
register int edgesum; /*correction count */
|
|
|
|
if (area < 1200)
|
|
area = 1200; /*minimum value */
|
|
|
|
loopstart = NULL; /*not found it yet */
|
|
edgept = startpt; /*start of loop */
|
|
|
|
do {
|
|
/*current point fixed */
|
|
if (edgept->flags[FLAGS] & FIXED
|
|
/*and next not */
|
|
&& (edgept->next->flags[FLAGS] & FIXED) == 0) {
|
|
loopstart = edgept; /*start of repoly */
|
|
break;
|
|
}
|
|
edgept = edgept->next; /*next point */
|
|
}
|
|
while (edgept != startpt); /*until found or finished */
|
|
|
|
if (loopstart == NULL && (startpt->flags[FLAGS] & FIXED) == 0) {
|
|
/*fixed start of loop */
|
|
startpt->flags[FLAGS] |= FIXED;
|
|
loopstart = startpt; /*or start of loop */
|
|
}
|
|
if (loopstart) {
|
|
do {
|
|
edgept = loopstart; /*first to do */
|
|
do {
|
|
linestart = edgept;
|
|
edgesum = 0; /*sum of lengths */
|
|
do {
|
|
/*sum lengths */
|
|
edgesum += edgept->flags[RUNLENGTH];
|
|
edgept = edgept->next; /*move on */
|
|
}
|
|
while ((edgept->flags[FLAGS] & FIXED) == 0
|
|
&& edgept != loopstart && edgesum < 126);
|
|
if (poly_debug)
|
|
tprintf
|
|
("Poly2:starting at (%d,%d)+%d=(%d,%d),%d to (%d,%d)\n",
|
|
linestart->pos.x, linestart->pos.y, linestart->flags[DIR],
|
|
linestart->vec.x, linestart->vec.y, edgesum, edgept->pos.x,
|
|
edgept->pos.y);
|
|
/*reapproximate */
|
|
cutline(linestart, edgept, area);
|
|
|
|
while ((edgept->next->flags[FLAGS] & FIXED)
|
|
&& edgept != loopstart)
|
|
edgept = edgept->next; /*look for next non-fixed */
|
|
}
|
|
/*do all the loop */
|
|
while (edgept != loopstart);
|
|
edgesum = 0;
|
|
do {
|
|
if (edgept->flags[FLAGS] & FIXED)
|
|
edgesum++;
|
|
edgept = edgept->next;
|
|
}
|
|
//count fixed pts
|
|
while (edgept != loopstart);
|
|
if (edgesum < 3)
|
|
area /= 2; //must have 3 pts
|
|
}
|
|
while (edgesum < 3);
|
|
do {
|
|
linestart = edgept;
|
|
do {
|
|
edgept = edgept->next;
|
|
}
|
|
while ((edgept->flags[FLAGS] & FIXED) == 0);
|
|
linestart->next = edgept;
|
|
edgept->prev = linestart;
|
|
linestart->vec.x = edgept->pos.x - linestart->pos.x;
|
|
linestart->vec.y = edgept->pos.y - linestart->pos.y;
|
|
}
|
|
while (edgept != loopstart);
|
|
}
|
|
else
|
|
edgept = startpt; /*start of loop */
|
|
|
|
loopstart = edgept; /*new start */
|
|
return loopstart; /*correct exit */
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
*cutline(first,last,area) straightens out a line by partitioning
|
|
*and joining the ends by a straight line*
|
|
**********************************************************************/
|
|
|
|
void cutline( //recursive refine
|
|
EDGEPT *first, /*ends of line */
|
|
EDGEPT *last,
|
|
int area /*area of object */
|
|
) {
|
|
register EDGEPT *edge; /*current edge */
|
|
TPOINT vecsum; /*vector sum */
|
|
int vlen; /*approx length of vecsum */
|
|
TPOINT vec; /*accumulated vector */
|
|
EDGEPT *maxpoint; /*worst point */
|
|
int maxperp; /*max deviation */
|
|
register int perp; /*perp distance */
|
|
int ptcount; /*no of points */
|
|
int squaresum; /*sum of perps */
|
|
|
|
edge = first; /*start of line */
|
|
if (edge->next == last)
|
|
return; /*simple line */
|
|
|
|
/*vector sum */
|
|
vecsum.x = last->pos.x - edge->pos.x;
|
|
vecsum.y = last->pos.y - edge->pos.y;
|
|
if (vecsum.x == 0 && vecsum.y == 0) {
|
|
/*special case */
|
|
vecsum.x = -edge->prev->vec.x;
|
|
vecsum.y = -edge->prev->vec.y;
|
|
}
|
|
/*absolute value */
|
|
vlen = vecsum.x > 0 ? vecsum.x : -vecsum.x;
|
|
if (vecsum.y > vlen)
|
|
vlen = vecsum.y; /*maximum */
|
|
else if (-vecsum.y > vlen)
|
|
vlen = -vecsum.y; /*absolute value */
|
|
|
|
vec.x = edge->vec.x; /*accumulated vector */
|
|
vec.y = edge->vec.y;
|
|
maxperp = 0; /*none yet */
|
|
squaresum = ptcount = 0;
|
|
edge = edge->next; /*move to actual point */
|
|
maxpoint = edge; /*in case there isn't one */
|
|
do {
|
|
perp = CROSS (vec, vecsum); /*get perp distance */
|
|
if (perp != 0) {
|
|
perp *= perp; /*squared deviation */
|
|
}
|
|
squaresum += perp; /*sum squares */
|
|
ptcount++; /*count points */
|
|
if (poly_debug)
|
|
tprintf ("Cutline:Final perp=%d\n", perp);
|
|
if (perp > maxperp) {
|
|
maxperp = perp;
|
|
maxpoint = edge; /*find greatest deviation */
|
|
}
|
|
vec.x += edge->vec.x; /*accumulate vectors */
|
|
vec.y += edge->vec.y;
|
|
edge = edge->next;
|
|
}
|
|
while (edge != last); /*test all line */
|
|
|
|
perp = LENGTH (vecsum);
|
|
ASSERT_HOST (perp != 0);
|
|
|
|
if (maxperp < 256 * MAX_INT16) {
|
|
maxperp <<= 8;
|
|
maxperp /= perp; /*true max perp */
|
|
}
|
|
else {
|
|
maxperp /= perp;
|
|
maxperp <<= 8; /*avoid overflow */
|
|
}
|
|
if (squaresum < 256 * MAX_INT16)
|
|
/*mean squared perp */
|
|
perp = (squaresum << 8) / (perp * ptcount);
|
|
else
|
|
/*avoid overflow */
|
|
perp = (squaresum / perp << 8) / ptcount;
|
|
|
|
if (poly_debug)
|
|
tprintf ("Cutline:A=%d, max=%.2f(%.2f%%), msd=%.2f(%.2f%%)\n",
|
|
area, maxperp / 256.0, maxperp * 200.0 / area,
|
|
perp / 256.0, perp * 300.0 / area);
|
|
if (maxperp * par1 >= 10 * area || perp * par2 >= 10 * area || vlen >= 126) {
|
|
maxpoint->flags[FLAGS] |= FIXED;
|
|
/*partitions */
|
|
cutline(first, maxpoint, area);
|
|
cutline(maxpoint, last, area);
|
|
}
|
|
}
|