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zoom.c
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zoom.c
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/* This file was taken from XaoS-the fast portable realtime interactive
fractal zoomer. but it is simplified for BB. You may get complette
sources at XaoS homepage (http://www.paru.cas.cz/~hubicka/XaoS
*/
/*
* XaoS, a fast portable realtime fractal zoomer
* Copyright (C) 1996,1997 by
*
* Jan Hubicka ([email protected])
* Thomas Marsh ([email protected])
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*#define STATISTICS */
#ifdef _plan9_
#include <u.h>
#include <libc.h>
#include <stdio.h>
#else
#include <stdlib.h>
#include <stdio.h>
#ifdef __DJGPP__
#include "aconfig.dos"
#else
#include "aconfig.h"
#endif
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <math.h>
#include <string.h>
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include "config.h"
#ifndef _plan9_
/*#undef NDEBUG */
#include <assert.h>
#endif
#endif
#include "zoom.h"
#include "complex.h"
#include "formulas.h"
#ifdef _RED_
#include "plane.h"
#endif
#ifdef __GNUC__
#ifdef __i386__
#include "ctrl87.h"
#endif
#endif
#define callwait() if(d->wait_function!=NULL) d->wait_function();
int MAXITER = DEFAULT_MAX_ITER;
typedef struct {
double y0, k, kk, y0k;
} symetry2;
struct symetryinfo2 {
number_t xsym, ysym;
int nsymetries;
symetry2 *symetry;
};
static symetry2 sym_lines[100];
static struct symetryinfo2 cursymetry;
static number_t xmul, ymul, xdist, ydist;
static zoom_context *d;
static int INLINE calculate(number_t, number_t) CONSTF;
#ifdef _UNDEFINED_
static int INLINE symetries(number_t, number_t) CONSTF;
#endif
#ifdef STATISTICS
int mirrored = 0;
int nadded2 = 0, nsymetry2 = 0, nskipped2 = 0, mirrored2 = 0;
int tocalculate2 = 0, avoided2 = 0, frames2 = 0;
int ncalculated2 = 0, ninside2 = 0;
int niter2 = 0, niter1 = 0;
#endif
#ifdef _UNDEFINED_
static int INLINE symetries(number_t x, number_t y)
{
int i;
for (i = 0; i < cursymetry.nsymetries; i++) {
double b = cursymetry.symetry[i].k, c = x + b * y, x1, y1, dist;
int x2, y2;
x1 = (c - cursymetry.symetry[i].y0k) / (cursymetry.symetry[i].kk);
y1 = (c - x1) / b;
x1 = x - 2 * (x - x1);
y1 = y - 2 * (y - y1);
if (x1 < d->s.nc || y1 < d->s.ni || x1 >= d->s.mc || y1 >= d->s.mi)
continue;
x2 = (x1 - d->s.nc) * xmul;
y2 = (y1 - d->s.ni) * ymul;
dist = myfabs(d->reallocx[x2].possition - x1);
if (x2 > 0 && myfabs(d->reallocx[x2 - 1].possition - x1) < dist) {
x2--;
dist = myfabs(d->reallocx[x2].possition - x1);
} else if (x2 < d->width - 1 && myfabs(d->reallocx[x2 + 1].possition - x1) < dist) {
x2++;
dist = myfabs(d->reallocx[x2].possition - x1);
}
if (dist > xdist)
continue;
dist = myfabs(d->reallocy[y2].possition - y1);
if (y2 > 0 && myfabs(d->reallocy[y2 - 1].possition - y1) < dist) {
y2--;
dist = myfabs(d->reallocy[y2].possition - y1);
} else if (y2 < d->height - 1 && myfabs(d->reallocy[y2 + 1].possition - y1) < dist) {
y2++;
dist = myfabs(d->reallocy[y2].possition - y1);
}
if (dist > ydist)
continue;
if (d->reallocx[x2].symto != -1)
x2 = d->reallocx[x2].symto;
if (d->reallocy[y2].symto != -1)
y2 = d->reallocy[y2].symto;
if (d->reallocx[x2].dirty ||
d->reallocy[y2].dirty /* == 1 */ )
continue;
STAT(mirrored2++);
return ((unsigned char) *(d->vbuff + x2 + y2 * d->scanline));
}
return (-1);
}
#endif
static int INLINE calculate(number_t x, number_t y)
{
int i;
#ifdef _UNDEFINED_
i = symetries(x, y);
if (i != -1)
return (i);
#endif
#ifdef _RED_
i = d->plane;
if (i) {
recalculate(i, &x, &y);
}
#endif
STAT(ncalculated2++);
if (d->mandelbrot)
if (d->currentformula->startzero)
i = d->currentformula->calculate(0.0, 0.0, x, y);
else
i = d->currentformula->calculate(x, y, x, y);
else
i = d->currentformula->calculate(x, y, d->pre, d->pim);
if (i == INT_MAX) {
STAT(ninside2++);
STAT(niter2 += MAXITER);
return d->colors[0];
}
STAT(niter1 += i);
if (i < 0)
i += (-i / (d->num_colors - 1) + 1) * (d->num_colors - 1);
return (d->colors[1 + i % (d->num_colors - 1)]);
}
struct dyn_data {
int price;
int previous;
};
#define FPMUL 512
#define RANGES 2 /*shift equal to x*RANGE */
#define RANGE 4
#define DSIZEHMASK (0x7) /*mask equal to x%(DSIZE) */
#define DSIZE (2*RANGE)
#define DSIZES (RANGES+1) /*shift equal to x*DSIZE */
#define getdata(n,i) ((((n)<<DSIZES)+(((i)&(DSIZEHMASK)))))
#define adddata(n,i) ((((n)<<DSIZES)+(((i)&(DSIZEHMASK)))))
#define getbest(i) (((size)<<DSIZES)+(i))
#define PRICE(i,i1) (( (i)-(i1) * (i)-(i1) * rangedelta ))
#define NEWPRICE (FPMUL)
#define NOSETMASK ((unsigned int)0x80000000)
#define END 0x40000000
#define MAXPRICE INT_MAX
CONST int dynsize = sizeof(struct dyn_data);
#ifndef INT_MIN
#define INT_MIN (- INT_MAX - 1)
#endif
static /*INLINE */ void mkrealloc_table(register number_t * pos, realloc_t * realloc, CONST int size, CONST number_t begin, CONST number_t end, number_t sym)
{
int i, ps, ps1 = 0, pe;
register int p;
register int bestprice;
realloc_t *r = realloc, *reallocs;
register struct dyn_data *dyndata, *dynptr;
int bestdata = 0;
int *best, *best1, *tmp;
number_t step = (end - begin) / (number_t) size;
number_t y, range = RANGE * step, rangedelta, yend, ftmp;
int symi = -1;
int lastplus = 0;
int data;
int previous = 0;
int myprice;
#ifdef STATISTICS
int nadded = 0, nsymetry = 0, nskipped = 0;
#endif
#ifdef HAVE_ALLOCA
dyndata = alloca((size) * (DSIZE + 1) * sizeof(struct dyn_data));
best = alloca(size * sizeof(int));
best1 = alloca(size * sizeof(int));
#else
dyndata = malloc((size) * (DSIZE + 1) * sizeof(struct dyn_data));
best = malloc(size * sizeof(int));
best1 = malloc(size * sizeof(int));
#endif
if (dyndata == NULL) {
fprintf(stderr, "XaoS fatal error:Could not allocate memory for"
"temporary dynamical data of size:%lu\n"
"I am unable to handle this problem so please resize to lower window\n", (size) * (DSIZE + 1) * sizeof(struct dyn_data) + size * sizeof(int) + size * sizeof(int));
return;
}
if (best == NULL) {
fprintf(stderr, "XaoS fatal error:Could not allocate memory for"
"temporary dynamical data of size:%lu\n"
"I am unable to handle this problem so please resize to lower window\n", (size) * (DSIZE + 1) * sizeof(struct dyn_data) + size * sizeof(int) + size * sizeof(int));
#ifndef HAVE_ALLOCA
free(dyndata);
#endif
return;
}
if (best1 == NULL) {
fprintf(stderr, "XaoS fatal error:Could not allocate memory for"
"temporary dynamical data of size:%lu\n"
"I am unable to handle this problem so please resize to lower window\n", (size) * (DSIZE + 1) * sizeof(struct dyn_data) + size * sizeof(int) + size * sizeof(int));
#ifndef HAVE_ALLOCA
free(dyndata);
free(best);
#endif
return;
}
/* get prices */
if (begin > sym)
symi = -2;
ps = 0;
pe = 0;
pos[size] = end + 20 * step;
rangedelta = FPMUL / (range * range);
for (i = 0; i < size; i++) {
tmp = best1;
bestprice = MAXPRICE;
y = begin + i * step;
p = ps; /*just inicialize parameters */
best1 = best;
if (y > sym && symi == -1)
symi = i - 1; /*find symetry point */
yend = y - range + step;
best = tmp;
if (yend < begin - step) /*do no allow lines outside screen */
yend = begin - step;
while (pos[p] < yend && p < size) /*skip lines out of range */
p++;
if (p != 0 && pos[p - 1] > y - range)
p--;
ps1 = p;
yend = y + range;
if (ps != pe && p > ps) { /*previous point had lines */
assert(p >= ps);
if (p < pe) {
previous = best[p - 1];
} else
previous = best[pe - 1];
myprice = dyndata[previous].price; /*find best one */
} else {
if (i > 0) { /*previous line had no lines */
previous = getbest(i - 1);
myprice = dyndata[previous].price;
} else
previous = END, myprice = 0;
}
data = getbest(i); /*find store possition */
myprice += NEWPRICE;
bestdata = data;
dyndata[data].previous = previous;
bestprice = myprice; /*calculate best available price */
dyndata[data].price = myprice; /*store data */
assert(bestprice >= 0);
if (yend > end + step) /*check bounds */
yend = end + step;
data = adddata(p, i); /*calcualte all lines good for this y */
dynptr = &dyndata[data];
if (ps != pe) { /*in case that previous had also possitions */
int price1 = INT_MAX;
if (p == ps) { /*here we must skip previous point */
if (pos[p] != pos[p + 1]) {
previous = getbest(i - 1);
myprice = dyndata[previous].price;
myprice += PRICE(pos[p], y); /*store data */
if (myprice < bestprice) { /*calcualte best */
bestprice = myprice, bestdata = data;
dynptr->price = myprice;
dynptr->previous = previous;
}
}
assert(bestprice >= 0);
assert(myprice >= 0);
best1[p] = bestdata;
data += DSIZE;
p++;
dynptr += DSIZE;
}
previous = -1;
while (p < pe) { /*this is area where intervals of current point and previous one are crossed */
if (pos[p] != pos[p + 1]) {
if (previous != best[p - 1]) {
previous = best[p - 1];
price1 = myprice = dyndata[previous].price;
if (myprice + NEWPRICE < bestprice) {
myprice += NEWPRICE;
bestprice = myprice, bestdata = data - DSIZE;
(dynptr - DSIZE)->price = myprice;
(dynptr - DSIZE)->previous = previous | NOSETMASK;
best1[p - 1] = bestdata;
myprice -= NEWPRICE;
}
} else
myprice = price1;
myprice += PRICE(pos[p], y); /*store data */
} else
myprice += NEWPRICE;
if (myprice < bestprice) { /*calcualte best */
bestprice = myprice, bestdata = data;
dynptr->price = myprice;
dynptr->previous = previous;
}
assert(bestprice >= 0);
assert(myprice >= 0);
best1[p] = bestdata;
data += DSIZE;
p++;
dynptr += DSIZE;
}
if (p > ps) {
assert(p >= ps); /*find best one in previous */
previous = best[p - 1];
price1 = dyndata[previous].price;
} else {
previous = getbest(i - 1);
price1 = dyndata[previous].price;
}
if (price1 + NEWPRICE < bestprice && p > ps1) {
myprice = price1 + NEWPRICE;
bestprice = myprice, bestdata = data - DSIZE;
(dynptr - DSIZE)->price = myprice;
(dynptr - DSIZE)->previous = previous | NOSETMASK;
best1[p - 1] = bestdata;
myprice -= NEWPRICE;
}
while (pos[p] < yend) {
if (pos[p] != pos[p + 1]) {
myprice = price1;
myprice += PRICE(pos[p], y); /*store data */
if (myprice < bestprice) { /*calcualte best */
bestprice = myprice, bestdata = data;
dynptr->price = myprice;
dynptr->previous = previous;
} else if (pos[p] > y)
break;
}
assert(bestprice >= 0);
assert(myprice >= 0);
best1[p] = bestdata;
data += DSIZE;
p++;
dynptr += DSIZE;
}
while (pos[p] < yend) {
best1[p] = bestdata;
p++;
}
} else {
int myprice1; /*simplified loop for case that previous
y had no lines */
if (pos[p] < yend) {
if (i > 0) {
previous = getbest(i - 1);
myprice1 = dyndata[previous].price;
} else
previous = END, myprice1 = 0;
while (pos[p] < yend) {
if (pos[p] != pos[p + 1]) {
myprice = myprice1 + PRICE(pos[p], y);
if (myprice < bestprice) {
dynptr->price = myprice;
dynptr->previous = previous;
bestprice = myprice, bestdata = data;
} else if (pos[p] > y)
break;
}
assert(bestprice >= 0);
assert(myprice >= 0);
best1[p] = bestdata;
p++;
data += DSIZE;
dynptr += DSIZE;
}
while (pos[p] < yend) {
best1[p] = bestdata;
p++;
}
}
}
previous = ps; /*store possitions for next loop */
ps = ps1;
ps1 = pe;
pe = p;
}
assert(bestprice >= 0);
realloc += size;
previous = (begin > pos[0]) && (end < pos[size - 1]);
if ((begin < pos[0]) && (end > pos[size - 1]))
previous = 2;
for (i = size; i > 0;) { /*and finally traces the path */
int bestdata1;
realloc--;
i--;
realloc->symto = -1;
realloc->symref = -1;
bestdata1 = dyndata[bestdata].previous;
if ((bestdata1 & NOSETMASK) || bestdata >= ((size) << DSIZES)) {
/*realloc->possition=y; */
realloc->possition = begin + i * step;
realloc->recalculate = 1;
STAT(nadded++);
realloc->dirty = 1;
lastplus++;
if (lastplus >= size)
lastplus = 0;
realloc->plus = lastplus;
if (previous == 1)
realloc->price = 1 / (1 + myabs(pos[i] - realloc->possition) / step);
else if (previous == 2) {
realloc->price = (myabs(pos[i] - realloc->possition) / step);
if (i == 0 || i == size - 1)
realloc->price *= 500;
} else
realloc->price = 1;
} else {
p = bestdata >> DSIZES;
assert(p >= 0 && p < size);
realloc->possition = pos[p];
realloc->plus = p;
realloc->dirty = 0;
realloc->recalculate = 0;
lastplus = p;
}
bestdata = bestdata1 & (~NOSETMASK);
}
#ifndef HAVE_ALLOCA
free(dyndata);
free(best);
free(best1);
#endif
realloc = r;
sym *= 2;
if (symi < size && symi >= 0) {
i = 2 * symi - size;
if (i < 0)
i = 0;
realloc += i;
for (; i <= symi; i++, realloc++) { /*makes symetries */
int j, min = 0;
number_t dist = INT_MAX, tmp1;
if (realloc->symto != -1)
continue;
y = realloc->possition;
realloc->symto = 2 * symi - i;
if (realloc->symto >= size - RANGE)
realloc->symto = size - RANGE - 1;
dist = range;
min = RANGE;
reallocs = &r[realloc->symto];
for (j = realloc->symto > RANGE ? -RANGE : -realloc->symto; j < RANGE && realloc->symto + j < size - 1; j++) {
ftmp = sym - (reallocs + j)->possition;
if ((tmp1 = myfabs((double)(ftmp - y))) < dist) {
if ((realloc == r || ftmp > (realloc - 1)->possition) &&
(ftmp < (realloc + 1)->possition)) {
dist = tmp1;
min = j;
}
}
}
realloc->symto += min;
if (min == RANGE || realloc->symto <= symi ||
(reallocs = reallocs + min)->symto != -1 || reallocs->symref != -1) {
realloc->symto = -1;
continue;
}
if (myfabs(y - (sym - reallocs->possition)) < range) {
if (!realloc->recalculate) {
realloc->symto = -1;
if (reallocs->symto != -1 || !reallocs->recalculate)
continue;
reallocs->plus = realloc->plus;
reallocs->symto = i;
reallocs->dirty = 1;
realloc->symref = reallocs - r;
STAT(nadded -= reallocs->recalculate);
reallocs->recalculate = 0;
reallocs->possition = sym - realloc->possition;
} else {
if (reallocs->symto != -1) {
realloc->symto = -1;
continue;
}
STAT(nadded -= realloc->recalculate);
realloc->dirty = 1;
realloc->plus = reallocs->plus;
realloc->recalculate = 0;
reallocs->symref = i;
realloc->possition = sym - reallocs->possition;
}
STAT(nsymetry++);
} else
realloc->symto = -1;
}
}
realloc = r + 1;
for (i = 1; i < size - 1; i++, realloc++) { /*optimizes new possitions to look better */
if (realloc->recalculate) {
if ((!(realloc - 1)->recalculate || !(realloc + 1)->recalculate))
realloc->possition = ((realloc - 1)->possition + (realloc + 1)->possition) / 2;
i++;
realloc++;
}
}
STAT(printf("%i added %i skipped %i mirrored\n", nadded, nskipped, nsymetry));
STAT(nadded2 += nadded;
nskipped2 += nskipped;
nsymetry2 += nsymetry);
}
static /*INLINE */ void moveoldpoints(void)
{
unsigned char *vline, *vbuff = d->vbuff;
int *size, *siz, *sizend;
int *start, *startptr;
realloc_t *ry, *rend;
realloc_t *rx, *rend1;
int plus1 = 0, plus2 = 0;
#ifdef HAVE_ALLOCA
size = (int *) alloca(d->width * sizeof(int));
start = (int *) alloca(d->width * sizeof(int));
#else
size = (int *) malloc(d->width * sizeof(int));
start = (int *) malloc(d->width * sizeof(int));
#endif
if (size == NULL) {
fprintf(stderr, "XaoS fratal error:Could not allocate memory for"
"temporary dynamical data of size:%lu\n"
"I am unable to handle this problem so please resize to lower window\n", 2 * d->width * sizeof(int));
return;
}
if (start == NULL) {
fprintf(stderr, "XaoS fratal error:Could not allocate memory for"
"temporary dynamical data of size:%lu\n"
"I am unable to handle this problem so please resize to lower window\n", 2 * d->width * sizeof(int));
#ifndef HAVE_ALLOCA
free(size);
#endif
return;
}
assert(size != NULL);
assert(start != NULL);
startptr = start;
siz = size;
for (rx = d->reallocx, rend1 = d->reallocx + d->width;
rx < rend1; rx++)
if ((rx->recalculate) && plus1 < d->width + 1)
plus1++;
else
break;
*startptr = d->reallocx->plus;
*siz = 0;
for (; rx < rend1; rx++) {
if ((rx->recalculate || rx->plus == *startptr + *siz) && *startptr + *siz < d->width)
(*siz)++;
else {
siz++, startptr++;
if (rx->recalculate) {
*startptr = 0;
ry = rx;
for (; rx < rend1; rx++)
if (rx->recalculate)
(*startptr)--;
else
break;
if (rx < rend1)
*startptr += rx->plus, rx = ry;
else {
plus2 = -(*startptr);
startptr--;
siz--;
break;
}
}
*startptr = rx->plus;
assert(rx->plus >= 0 && rx->plus <= d->width);
*siz = 1;
}
}
if (*siz)
sizend = siz + 1;
else
sizend = siz;
plus2 += d->scanline - d->width;
for (ry = d->reallocy, rend = ry + d->height; ry < rend; ry++) {
vline = d->back + ry->plus * d->scanline;
if (!ry->recalculate) {
vbuff += plus1;
for (startptr = start, siz = size; siz < sizend; siz++, startptr++) {
assert(vbuff >= d->vbuff);
assert(vbuff + *siz <= d->vbuff + d->scanline * d->height);
assert(vline + *startptr >= d->back);
assert(vline + *startptr + *siz <= d->back + d->scanline * d->height);
memcpy(vbuff, vline + *startptr, *siz), vbuff += *siz;
}
vbuff += plus2;
} else
vbuff += d->scanline;
}
#ifndef HAVE_ALLOCA
free((void *) size);
free((void *) start);
#endif
}
/*#define DRAW */
#ifdef STATISTICS
static int tocalculate = 0, avoided = 0;
#endif
static INLINE void calcline(unsigned char *vbuff1, realloc_t * ry)
{
number_t y;
int range = d->range;
realloc_t *rx, *rend, *rend1, *ryl, *ryr;
int distl, distr, distup, distdown;
unsigned char *vbuff;
int s2, c;
#ifdef DRAW
int s3;
#endif
y = ry->possition;
rend = ry - range - 1;
if (d->reallocy > rend)
rend = d->reallocy;
distl = 1;
for (ryl = ry - 1; rend <= ryl && ryl->dirty; ryl--, distl++);
rend = ry + range;
distr = 1;
if (d->reallocy + d->height < rend)
rend = d->reallocy + d->height;
for (ryr = ry + 1; rend > ryr && ryr->dirty; ryr++, distr++);
distl *= d->scanline;
distr *= d->scanline;
rend = d->reallocy + d->height;
if (ryr == d->reallocy + d->height || ryl < d->reallocy || ryr->dirty || ryl->dirty) {
for (rx = d->reallocx, vbuff = vbuff1, rend1 = d->reallocx + d->width;
rx < rend1; rx += 1) {
if (!rx->dirty) {
STAT(tocalculate++);
#ifdef DRAW
s3 = mirrored;
#endif
*vbuff = calculate(rx->possition, y);
#ifdef DRAW
if (s3 == mirrored)
vga_drawpixel(rx - d->reallocx, ry - d->reallocy, 254);
#endif
}
vbuff += 1;
}
} else
for (s2 = 0; s2 < 2; s2++) {
distup = range + 2;
distdown = 0;
for (rx = d->reallocx + s2, vbuff = vbuff1 + s2, rend1 = d->reallocx + d->width;
rx < rend1; rx += 2) {
assert(vbuff >= d->vbuff);
assert(vbuff < d->vbuff + d->scanline * d->height);
assert(rx >= d->reallocx && rx <= d->reallocx + d->width);
assert(ry >= d->reallocy && ry <= d->reallocy + d->height);
if (!rx->dirty) {
STAT(tocalculate++);
if (distdown <= 0) {
distdown = 1;
for (ryr = rx + 1; ryr < rend1 && ryr->dirty; ryr++, distdown++);
if (ryr == rend1)
distdown = INT_MAX;
}
if (distdown < range &&
distup < range &&
(vbuff[-distl] == vbuff[distr] &&
((
vbuff[-distl + distdown] == (c = vbuff[distr]) &&
vbuff[-distl - distup] == c &&
c == vbuff[distr - distup] &&
c == vbuff[distr + distdown]) &&
(!s2 ||
(
((rx - 1)->dirty ||
vbuff[-1] == c) &&
((rx + 1)->dirty ||
vbuff[+1] == c)
))))) {
*vbuff = vbuff[distr];
STAT(avoided++);
} else {
#ifdef DRAW
s3 = mirrored;
#endif
*vbuff = calculate(rx->possition, y);
#ifdef DRAW
if (s3 == mirrored)
vga_drawpixel(rx - d->reallocx, ry - d->reallocy, 255);
#endif
}
distup = 0;
}
vbuff += 2;
if (!(rx + 1)->dirty)
distup = -1;
distdown -= 2;
distup += 2;
}
}
ry->recalculate = 2;
ry->dirty = 0;
}
static INLINE void calccolumn(unsigned char *vbuff1, realloc_t * rx)
{
number_t x;
int range = d->range;
realloc_t *ry, *rend, *rend1, *rxl, *rxr;
int distl, distr, distup, distdown;
int c;
unsigned char *vbuff;
int s2;
#ifdef DRAW
int s3;
#endif
rend = rx - range + 1;
if (d->reallocx > rend)
rend = d->reallocx;
distl = 1;
for (rxl = rx - 1; rend <= rxl && rxl->dirty; rxl--, distl++);
rend = rx + range;
distr = 1;
if (d->reallocx + d->width < rend)
rend = d->reallocx + d->width;
for (rxr = rx + 1; rend > rxr && rxr->dirty; rxr++, distr++);
x = rx->possition;
rend = d->reallocx + d->width;
if (rxr >= d->reallocx + d->width || rxl < d->reallocx || rxr->dirty || rxl->dirty) {
for (ry = d->reallocy, vbuff = vbuff1, rend1 = d->reallocy + d->height; ry < rend1; ry++) {
if (!ry->dirty) {
STAT(tocalculate++);
#ifdef DRAW
s3 = mirrored;
#endif
*vbuff = calculate(x, ry->possition);
#ifdef DRAW
if (s3 == mirrored)
vga_drawpixel(rx - d->reallocx, ry - d->reallocy, 32);
#endif
}
vbuff += d->scanline;
}
} else
for (s2 = 0; s2 < 2; s2++) {
distup = range + 2;
distdown = 0;
for (ry = d->reallocy + s2, vbuff = vbuff1 + s2 * d->scanline, rend1 = d->reallocy + d->height; ry < rend1; ry += 2) {
assert(vbuff >= d->vbuff);
assert(vbuff < d->vbuff + d->scanline * d->height);
assert(rx >= d->reallocx && rx <= d->reallocx + d->width);
assert(ry >= d->reallocy && ry <= d->reallocy + d->height);
/*if (ry->symto == -1) { */
if (!ry->dirty) {
STAT(tocalculate++);
if (distdown <= 0) {
distdown = 1;
for (rxr = ry + 1; rxr < rend1 && rxr->dirty; rxr++, distdown++);
if (rxr == rend1)
distdown = d->width * 2;
}
if (
distup < range &&
distdown < range &&
(vbuff[-distl] == vbuff[distr] &&
((
vbuff[-distl + distdown * d->scanline] == (c = (vbuff[distr])) &&
vbuff[-distl - distup * d->scanline] == c &&
c == vbuff[distr + distdown * d->scanline] &&
c == vbuff[distr - distup * d->scanline]) &&
(!s2 ||
(
((ry + 1)->dirty ||
vbuff[d->scanline] == c) &&
((ry - 1)->dirty ||
vbuff[-d->scanline] == c)
))))) {
STAT(avoided++);
*vbuff = vbuff[distr];
} else {
#ifdef DRAW
s3 = mirrored;
#endif
*vbuff = calculate(x, ry->possition);
#ifdef DRAW
if (s3 == mirrored)
vga_drawpixel(rx - d->reallocx, ry - d->reallocy, 255);
#endif
}
distup = 0;
}
vbuff += d->scanline << 1;
if (!(ry + 1)->dirty)
distup = -1;
distdown -= 2;
distup += 2;
}
}
rx->recalculate = 0;
rx->dirty = 0;
}
static /*INLINE */ void calculatenew(void)
{
int s;
unsigned char *vbuff = d->vbuff;
realloc_t *rx, *ry, *rend;
/*int s3; */
STAT(mirrored = 0);
STAT(tocalculate = 0);
STAT(avoided = 0);
d->pass = "Solid guessing 1";
d->max = 0;
d->pos = 0;
for (ry = d->reallocy, rend = ry + d->height; ry < rend; ry++) {
if (ry->recalculate)
d->max++;
}
callwait();
for (s = 0; s < 2; s++) {
vbuff = d->vbuff + s * d->scanline;
for (ry = d->reallocy + s, rend = ry + d->height - s; ry < rend; ry += 2) {
if (ry->recalculate) {
calcline(vbuff, ry);
d->pos++;
callwait();
if (d->interrupt)
return;
} /*if recalculate */
vbuff += d->scanline << 1;
} /*for ry */
} /*for s */
d->max = 0;
d->pass = "Solid guessing 2";
d->pos = 0;
for (rx = d->reallocx, rend = rx + d->width; rx < rend; rx++) {
if (rx->recalculate)
d->max++;
}
for (s = 0; s < 2; s++) {
vbuff = d->vbuff + s;
for (rx = d->reallocx + s, rend = rx + d->width - s; rx < rend; rx += 2) {
if (rx->recalculate) {
calccolumn(vbuff, rx);
d->pos++;
callwait();
if (d->interrupt)
return;
}
vbuff += 2;
}
}
STAT(printf("Avoided caluclating of %i points from %i and mirrored %i %2.2f%% %2.2f%%\n", avoided, tocalculate, mirrored, 100.0 * (avoided + mirrored) / tocalculate, 100.0 * (tocalculate - avoided - mirrored) / d->width / d->height));
STAT(mirrored2 += mirrored;
avoided2 += avoided;
tocalculate2 += tocalculate;
frames2 += 1);
}
static INLINE void addprices(realloc_t * r, realloc_t * r2)
{
realloc_t *r3;
while (r < r2) {
r3 = r + (((int) (r2 - r)) >> 1);
r3->price = (r2->possition - r3->possition) * (r3->price);
if (r3->symref != -1)
r3->price = r3->price / 2;
addprices(r, r3);
r = r3 + 1;
}
}
static /*INLINE */ void dosymetry(void)
{
unsigned char *vbuff = d->vbuff;
realloc_t *rx, *ry, *rend;
vbuff = d->vbuff;
for (ry = d->reallocy, rend = ry + d->height; ry < rend; ry++) {
if (ry->symto != -1) {
if (!d->reallocy[ry->symto].dirty) {
memcpy(vbuff, d->vbuff + d->scanline * ry->symto, d->width * sizeof(*vbuff));
ry->dirty = 0;
}
}
vbuff += d->scanline;
}
vbuff = d->vbuff;
for (rx = d->reallocx, rend = rx + d->width; rx < rend; rx++) {
if (rx->symto != -1) {
if (!d->reallocx[rx->symto].dirty) {
unsigned char *vsrc = d->vbuff + rx->symto, *vend = vbuff + d->scanline * d->height;
for (; vbuff < vend; vbuff += d->scanline, vsrc += d->scanline)
*vbuff = *vsrc;
vbuff -= d->scanline * d->height;
rx->dirty = 0;
}
}
vbuff++;
}
}
static /*INLINE */ void fill(void)
{
register unsigned char *vbuff = d->vbuff, *vsrc = NULL, *vend;
realloc_t *rx, *ry, *r1, *r2, *rend, *rs, *rs1;
int n = 0;
vbuff = d->vbuff;
for (ry = d->reallocy, rend = ry + d->height; ry < rend; ry++) {
if (ry->dirty) {
d->uncomplette = 1;
r1 = ry - 1;
for (r2 = ry + 1; r2->dirty && r2 < rend; r2++);
while (ry->dirty && ry < rend) {
if (r1 < d->reallocy)
rs = r2;
else if (r2 >= rend)
rs = r1;
else if (ry->possition - r1->possition < r2->possition - ry->possition)
rs = r1;
else
rs = r2;
if (rs->dirty || rs >= rend || rs < d->reallocy) {
printf("FAIL!\n");
init_tables(d);
return;
}
memcpy(d->vbuff + d->scanline * (ry - d->reallocy), d->vbuff + d->scanline * (rs - d->reallocy), d->width * sizeof(*vbuff));
ry->dirty = 0;
ry->possition = rs->possition;
ry++;
}
}
}
vbuff = d->vbuff;
vend = vbuff + d->scanline * d->height;
for (rx = d->reallocx, rend = rx + d->width; rx < rend; rx++) {
if (rx->dirty) {
d->uncomplette = 1;