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flam3.c
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/*
FLAM3 - cosmic recursive fractal flames
Copyright (C) 1992-2009 Spotworks LLC
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _MSC_VER /* VC++ */
#define _GNU_SOURCE
#endif
#include "private.h"
#ifdef XCODE
#include "config-xcode.h"
#else //XCODE
#include "config.h"
#endif
#include "variations.h"
#include "interpolation.h"
#include "parser.h"
#include "filters.h"
#include "palettes.h"
#include <limits.h>
#include <locale.h>
#include <math.h>
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <errno.h>
#ifdef HAVE_LIBPTHREAD
#include <pthread.h>
#endif
#ifdef __APPLE__
#include <mach/mach.h>
#include <mach/mach_error.h>
#define flam3_os "OSX"
#else
#ifdef _WIN32
#define WINVER 0x0500
#include <windows.h>
#define flam3_os "WIN"
#else
#define flam3_os "LNX"
#endif
#endif
char *flam3_version() {
return flam3_os "-" VERSION;
}
#define CHOOSE_XFORM_GRAIN 16384
#define CHOOSE_XFORM_GRAIN_M1 16383
#define random_distrib(v) ((v)[random()%vlen(v)])
unsigned short *flam3_create_xform_distrib(flam3_genome *cp) {
/* Xform distrib is created in this function */
int numrows;
int dist_row,i;
unsigned short *xform_distrib;
numrows = cp->num_xforms - (cp->final_xform_index>=0) + 1;
xform_distrib = calloc(numrows*CHOOSE_XFORM_GRAIN,sizeof(unsigned short));
/* First, set up the first row of the xform_distrib (raw weights) */
flam3_create_chaos_distrib(cp, -1, xform_distrib);
/* Check for non-unity chaos */
cp->chaos_enable = 1 - flam3_check_unity_chaos(cp);
if (cp->chaos_enable) {
/* Now set up a row for each of the xforms */
dist_row = 0;
for (i=0;i<cp->num_xforms;i++) {
if (cp->final_xform_index == i)
continue;
else
dist_row++;
if (flam3_create_chaos_distrib(cp, i, &(xform_distrib[CHOOSE_XFORM_GRAIN*(dist_row)]))) {
free(xform_distrib);
return(NULL);
}
}
}
return(xform_distrib);
}
/* Run this on a copy of a genome to get a strip of the output */
int flam3_make_strip(flam3_genome *cp, int nstrips, int stripnum) {
double old_center[2];
int j;
/* Strip out motion elements */
for (j=0;j<cp->num_xforms;j++)
flam3_delete_motion_elements(&cp->xform[j]);
old_center[0] = cp->center[0];
old_center[1] = cp->center[1];
cp->height /= nstrips;
cp->center[1] = cp->center[1] - ((nstrips - 1) * cp->height) / (2 * cp->pixels_per_unit * pow(2.0, cp->zoom));
cp->center[1] += cp->height * stripnum / ( cp->pixels_per_unit * pow(2.0,cp->zoom) );
rotate_by(cp->center, old_center, cp->rotate);
return(0);
}
void rotate_by(double *p, double *center, double by) {
double r[2];
double th = by * 2 * M_PI / 360.0;
double c = cos(th);
double s = -sin(th);
p[0] -= center[0];
p[1] -= center[1];
r[0] = c * p[0] - s * p[1];
r[1] = s * p[0] + c * p[1];
p[0] = r[0] + center[0];
p[1] = r[1] + center[1];
}
int flam3_check_unity_chaos(flam3_genome *cp) {
int i,j;
int num_std;
int unity=1;
num_std = cp->num_xforms - (cp->final_xform_index >= 0);
for (i=0;i<num_std;i++) {
for (j=0;j<num_std;j++) {
if ( fabs(cp->chaos[i][j]-1.0) > EPS)
unity=0;
}
}
return(unity);
}
int flam3_create_chaos_distrib(flam3_genome *cp, int xi, unsigned short *xform_distrib) {
/* Xform distrib is a preallocated array of CHOOSE_XFORM_GRAIN chars */
/* address of array is passed in, contents are modified */
double t,r,dr;
int i,j;
int num_std;
//fprintf(stdout,"storing at %ld\n",xform_distrib);
num_std = cp->num_xforms - (cp->final_xform_index >= 0);
dr = 0.0;
for (i = 0; i < num_std; i++) {
double d = cp->xform[i].density;
if (xi>=0)
d *= cp->chaos[xi][i];
//fprintf(stdout,"%f ",d);
if (d < 0.0) {
fprintf(stderr, "xform weight must be non-negative, not %g.\n", d);
return(1);
}
dr += d;
}
//fprintf(stdout,"dr=%f\n",dr);
if (dr == 0.0) {
fprintf(stderr, "cannot iterate empty flame.\n");
return(1);
}
dr = dr / CHOOSE_XFORM_GRAIN;
j = 0;
t = cp->xform[0].density;
if (xi>=0)
t *= cp->chaos[xi][0];
r = 0.0;
for (i = 0; i < CHOOSE_XFORM_GRAIN; i++) {
while (r >= t) {
j++;
if (xi>=0)
t += cp->xform[j].density*cp->chaos[xi][j];
else
t += cp->xform[j].density;
}
//fprintf(stdout,"%d ",j);
xform_distrib[i] = j;
r += dr;
}
//fprintf(stdout,"\n---\n");
return(0);
}
/*
* run the function system described by CP forward N generations. store
* the N resulting 4-vectors in SAMPLES. the initial point is passed in
* SAMPLES[0..3]. ignore the first FUSE iterations.
*/
int flam3_iterate(flam3_genome *cp, int n, int fuse, double *samples, unsigned short *xform_distrib, randctx *rc) {
int i;
double p[4], q[4];
int consec = 0;
int badvals = 0;
int lastxf=0;
int fn;
p[0] = samples[0];
p[1] = samples[1];
p[2] = samples[2];
p[3] = samples[3];
/* Perform precalculations */
for (i=0;i<cp->num_xforms;i++)
xform_precalc(cp,i);
for (i = -4*fuse; i < 4*n; i+=4) {
// fn = xform_distrib[ lastxf*CHOOSE_XFORM_GRAIN + (((unsigned)irand(rc)) % CHOOSE_XFORM_GRAIN)];
if (cp->chaos_enable)
fn = xform_distrib[ lastxf*CHOOSE_XFORM_GRAIN + (((unsigned)irand(rc)) & CHOOSE_XFORM_GRAIN_M1)];
else
fn = xform_distrib[ ((unsigned)irand(rc)) & CHOOSE_XFORM_GRAIN_M1 ];
if (apply_xform(cp, fn, p, q, rc)>0) {
consec ++;
badvals ++;
if (consec<5) {
p[0] = q[0];
p[1] = q[1];
p[2] = q[2];
p[3] = q[3];
i -= 4;
continue;
} else
consec = 0;
} else
consec = 0;
/* Store the last used transform */
lastxf = fn+1;
p[0] = q[0];
p[1] = q[1];
p[2] = q[2];
p[3] = q[3];
if (cp->final_xform_enable == 1) {
if (cp->xform[cp->final_xform_index].opacity==1 ||
flam3_random_isaac_01(rc)<cp->xform[cp->final_xform_index].opacity) {
apply_xform(cp, cp->final_xform_index, p, q, rc);
/* Keep the opacity from the original xform */
q[3] = p[3];
}
}
/* if fuse over, store it */
if (i >= 0) {
samples[i] = q[0];
samples[i+1] = q[1];
samples[i+2] = q[2];
samples[i+3] = q[3];
}
}
return(badvals);
}
int flam3_xform_preview(flam3_genome *cp, int xi, double range, int numvals, int depth, double *result, randctx *rc) {
/* We will evaluate the 'xi'th xform 'depth' times, over the following values: */
/* x in [-range : range], y in [-range : range], with 2* (2*numvals+1)^2 values returned */
double p[4];
double incr;
int outi;
int xx,yy,dd;
double oldweight;
outi=0;
oldweight = cp->xform[xi].density;
cp->xform[xi].density = 1.0;
/* Prepare the function pointers */
if (prepare_precalc_flags(cp)) {
cp->xform[xi].density = oldweight;
return(1);
}
/* Calculate increment */
incr = range / (double)numvals;
/* Perform precalculations */
xform_precalc(cp,xi);
/* Loop over the grid */
for (xx=-numvals;xx<=numvals;xx++) {
for (yy=-numvals;yy<=numvals;yy++) {
/* Calculate the input coordinates */
p[0] = (double)xx * incr;
p[1] = (double)yy * incr;
/* Loop over the depth */
for (dd=0;dd<depth;dd++)
apply_xform(cp, xi, p, p, rc);
result[outi] = p[0];
result[outi+1] = p[1];
outi += 2;
}
}
cp->xform[xi].density = oldweight;
return(0);
}
int flam3_colorhist(flam3_genome *cp, int num_batches, randctx *rc, double *hist) {
int lp,plp;
int mycolor;
unsigned short *xform_distrib;
int sbs = 10000;
double sub_batch[4*10000];
memset(hist,0,256*sizeof(double));
// get into the attractor
if (prepare_precalc_flags(cp))
return(1);
xform_distrib = flam3_create_xform_distrib(cp);
for (lp=0;lp<num_batches;lp++) {
sub_batch[0] = flam3_random_isaac_11(rc);
sub_batch[1] = flam3_random_isaac_11(rc);
sub_batch[2] = 0;
sub_batch[3] = 0;
if (xform_distrib==NULL)
return(1);
flam3_iterate(cp, sbs, 20, sub_batch, xform_distrib, rc);
// histogram the colors in the sub_batch array
for (plp=0;plp<4*sbs;plp+=4) {
mycolor = (int)(sub_batch[plp+2]*CMAP_SIZE);
if (mycolor<0) mycolor=0;
if (mycolor>CMAP_SIZE_M1) mycolor=CMAP_SIZE_M1;
hist[mycolor] += 1;
}
}
free(xform_distrib);
for (plp=0;plp<256;plp++)
hist[plp] /= (float)(num_batches*sbs);
return(0);
}
flam3_genome *sheep_loop(flam3_genome *cp, double blend) {
flam3_genome *result;
int i;
/* Allocate the genome - this must be freed by calling function */
result = calloc(1,sizeof(flam3_genome));
/* Clear it */
clear_cp(result,flam3_defaults_on);
/* Copy the original */
flam3_copy(result,cp);
/*
* Insert motion magic here :
* if there are motion elements, we will modify the contents of
* the result genome before flam3_rotate is called.
*/
for (i=0;i<cp->num_xforms;i++) {
if (cp->xform[i].num_motion>0) {
/* Apply motion parameters to result.xform[i] using blend parameter */
apply_motion_parameters(&cp->xform[i], &result->xform[i], blend);
}
/* Delete the motion parameters from the result */
flam3_delete_motion_elements(&result->xform[i]);
}
/* Rotate the affines */
flam3_rotate(result, blend*360.0,result->interpolation_type);
return(result);
}
flam3_genome *sheep_edge(flam3_genome *cp, double blend, int seqflag, double stagger) {
flam3_genome spun[2];
flam3_genome prealign[2];
flam3_genome *result;
int i,si;
char *ai;
memset(spun, 0, 2*sizeof(flam3_genome));
memset(prealign, 0, 2*sizeof(flam3_genome));
/* Allocate the memory for the result */
result = calloc(1,sizeof(flam3_genome));
/*
* Insert motion magic here :
* if there are motion elements, we will modify the contents of
* the prealign genomes before we rotate and interpolate.
*/
for (si=0;si<2;si++) {
flam3_copy(&prealign[si], &cp[si]);
for (i=0;i<cp[si].num_xforms;i++) {
if (cp[si].xform[i].num_motion>0) {
/* Apply motion parameters to result.xform[i] using blend parameter */
apply_motion_parameters(&cp[si].xform[i], &prealign[si].xform[i], blend);
}
}
}
/* Use the un-padded original for blend=0 when creating a sequence */
/* This keeps the original interpolation type intact */
if (seqflag && 0.0 == blend) {
flam3_copy(result, &prealign[0]);
} else {
/* Align what we're going to interpolate */
flam3_align(spun, prealign, 2);
spun[0].time = 0.0;
spun[1].time = 1.0;
/* Call this first to establish the asymmetric reference angles */
establish_asymmetric_refangles(spun,2);
/* Rotate the aligned xforms */
flam3_rotate(&spun[0], blend*360.0, spun[0].interpolation_type);
flam3_rotate(&spun[1], blend*360.0, spun[0].interpolation_type);
/* Now call the interpolation */
if (argi("unsmoother",0) == 0)
flam3_interpolate(spun, 2, smoother(blend), stagger, result);
else
flam3_interpolate(spun, 2, blend, stagger, result);
/* Interpolation type no longer needs to be forced to linear mode */
// if (!seqflag)
// result.interpolation_type = flam3_inttype_linear;
}
/* Clear the genomes we used */
clear_cp(&spun[0],flam3_defaults_on);
clear_cp(&spun[1],flam3_defaults_on);
clear_cp(&prealign[0],flam3_defaults_on);
clear_cp(&prealign[1],flam3_defaults_on);
/* Make sure there are no motion elements in the result */
for (i=0;i<result->num_xforms;i++)
flam3_delete_motion_elements(&result->xform[i]);
return(result);
}
/* BY is angle in degrees */
void flam3_rotate(flam3_genome *cp, double by, int interpolation_type) {
int i;
for (i = 0; i < cp->num_xforms; i++) {
double r[2][2];
double T[2][2];
double U[2][2];
double dtheta = by * 2.0 * M_PI / 360.0;
/* Don't rotate xforms with > 0 animate values */
if (cp->xform[i].animate == 0.0)
continue;
if (cp->xform[i].padding == 1) {
if (interpolation_type == flam3_inttype_compat) {
/* gen 202 era flam3 did not rotate padded xforms */
continue;
} else if (interpolation_type == flam3_inttype_older) {
/* not sure if 198 era flam3 rotated padded xforms */
continue;
} else if (interpolation_type == flam3_inttype_linear) {
/* don't rotate for prettier symsings */
continue;
} else if (interpolation_type == flam3_inttype_log) {
/* Current flam3: what do we prefer? */
//continue;
}
}
/* Do NOT rotate final xforms */
if (cp->final_xform_enable==1 && cp->final_xform_index==i)
continue;
r[1][1] = r[0][0] = cos(dtheta);
r[0][1] = sin(dtheta);
r[1][0] = -r[0][1];
T[0][0] = cp->xform[i].c[0][0];
T[1][0] = cp->xform[i].c[1][0];
T[0][1] = cp->xform[i].c[0][1];
T[1][1] = cp->xform[i].c[1][1];
mult_matrix(r, T, U);
cp->xform[i].c[0][0] = U[0][0];
cp->xform[i].c[1][0] = U[1][0];
cp->xform[i].c[0][1] = U[0][1];
cp->xform[i].c[1][1] = U[1][1];
}
}
#define APPMOT(x) do { addto->x += mot[i].x * motion_funcs(func,freq*blend); } while (0);
void apply_motion_parameters(flam3_xform *xf, flam3_xform *addto, double blend) {
int i,j,k;
int freq;
int func;
flam3_xform* mot;
mot = xf->motion;
/* Loop over the motion elements and add their contribution to the original vals */
for (i=0; i<xf->num_motion; i++) {
freq = mot->motion_freq;
func = mot->motion_func;
APPMOT(density); /* Must ensure > 0 after all is applied */
APPMOT(color); /* Must ensure [0,1] after all is applied */
APPMOT(opacity);
APPMOT(color_speed);
APPMOT(animate);
APPMOT(blob_low);
APPMOT(blob_high);
APPMOT(blob_waves);
APPMOT(pdj_a);
APPMOT(pdj_b);
APPMOT(pdj_c);
APPMOT(pdj_d);
APPMOT(fan2_x);
APPMOT(fan2_y);
APPMOT(rings2_val);
APPMOT(perspective_angle);
APPMOT(perspective_dist);
APPMOT(julian_power);
APPMOT(julian_dist);
APPMOT(juliascope_power);
APPMOT(juliascope_dist);
APPMOT(radial_blur_angle);
APPMOT(pie_slices);
APPMOT(pie_rotation);
APPMOT(pie_thickness);
APPMOT(ngon_sides);
APPMOT(ngon_power);
APPMOT(ngon_circle);
APPMOT(ngon_corners);
APPMOT(curl_c1);
APPMOT(curl_c2);
APPMOT(rectangles_x);
APPMOT(rectangles_y);
APPMOT(amw_amp);
APPMOT(disc2_rot);
APPMOT(disc2_twist);
APPMOT(super_shape_rnd);
APPMOT(super_shape_m);
APPMOT(super_shape_n1);
APPMOT(super_shape_n2);
APPMOT(super_shape_n3);
APPMOT(super_shape_holes);
APPMOT(flower_petals);
APPMOT(flower_holes);
APPMOT(conic_eccentricity);
APPMOT(conic_holes);
APPMOT(parabola_height);
APPMOT(parabola_width);
APPMOT(bent2_x);
APPMOT(bent2_y);
APPMOT(bipolar_shift);
APPMOT(cell_size);
APPMOT(cpow_r);
APPMOT(cpow_i);
APPMOT(cpow_power);
APPMOT(curve_xamp);
APPMOT(curve_yamp);
APPMOT(curve_xlength);
APPMOT(curve_ylength);
APPMOT(escher_beta);
APPMOT(lazysusan_x);
APPMOT(lazysusan_y);
APPMOT(lazysusan_twist);
APPMOT(lazysusan_space);
APPMOT(lazysusan_spin);
APPMOT(modulus_x);
APPMOT(modulus_y);
APPMOT(oscope_separation);
APPMOT(oscope_frequency);
APPMOT(oscope_amplitude);
APPMOT(oscope_damping);
APPMOT(popcorn2_x);
APPMOT(popcorn2_y);
APPMOT(popcorn2_c);
APPMOT(separation_x);
APPMOT(separation_xinside);
APPMOT(separation_y);
APPMOT(separation_yinside);
APPMOT(split_xsize);
APPMOT(split_ysize);
APPMOT(splits_x);
APPMOT(splits_y);
APPMOT(stripes_space);
APPMOT(stripes_warp);
APPMOT(wedge_angle);
APPMOT(wedge_hole);
APPMOT(wedge_count);
APPMOT(wedge_swirl);
APPMOT(wedge_julia_angle);
APPMOT(wedge_julia_count);
APPMOT(wedge_julia_power);
APPMOT(wedge_julia_dist);
APPMOT(wedge_sph_angle);
APPMOT(wedge_sph_hole);
APPMOT(wedge_sph_count);
APPMOT(wedge_sph_swirl);
APPMOT(whorl_inside);
APPMOT(whorl_outside);
APPMOT(waves2_scalex);
APPMOT(waves2_scaley);
APPMOT(waves2_freqx);
APPMOT(waves2_freqy);
APPMOT(auger_sym);
APPMOT(auger_weight);
APPMOT(auger_freq);
APPMOT(auger_scale);
APPMOT(flux_spread);
APPMOT(mobius_re_a);
APPMOT(mobius_re_b);
APPMOT(mobius_re_c);
APPMOT(mobius_re_d);
APPMOT(mobius_im_a);
APPMOT(mobius_im_b);
APPMOT(mobius_im_c);
APPMOT(mobius_im_d);
for (j = 0; j < flam3_nvariations; j++)
APPMOT(var[j]);
for (j=0; j<3; j++) {
for (k=0; k<2; k++) {
APPMOT(c[j][k]);
APPMOT(post[j][k]);
}
}
}
/* Make sure certain params are within reasonable bounds */
if (addto->color<0) addto->color=0;
if (addto->color>1) addto->color=1;
if (addto->density<0) addto->density=0;
}
/*
* create a control point that interpolates between the control points
* passed in CPS. CPS must be sorted by time.
*/
void flam3_interpolate(flam3_genome cps[], int ncps,
double time, double stagger, flam3_genome *result) {
int i1, i2;
double c[2];
flam3_genome cpi[4];
int smoothflag = 0;
if (1 == ncps) {
flam3_copy(result, &(cps[0]));
return;
}
if (cps[0].time >= time) {
i1 = 0;
i2 = 1;
} else if (cps[ncps - 1].time <= time) {
i1 = ncps - 2;
i2 = ncps - 1;
} else {
i1 = 0;
while (cps[i1].time < time)
i1++;
i1--;
i2 = i1 + 1;
}
c[0] = (cps[i2].time - time) / (cps[i2].time - cps[i1].time);
c[1] = 1.0 - c[0];
memset(cpi, 0, 4*sizeof(flam3_genome));
/* To interpolate the xforms, we will make copies of the source cps */
/* and ensure that they both have the same number before progressing */
if (flam3_interpolation_linear == cps[i1].interpolation) {
flam3_align(&cpi[0], &cps[i1], 2);
smoothflag = 0;
} else {
if (0 == i1) {
fprintf(stderr, "error: cannot use smooth interpolation on first segment.\n");
fprintf(stderr, "reverting to linear interpolation.\n");
flam3_align(&cpi[0], &cps[i1], 2);
smoothflag = 0;
}
if (ncps-1 == i2) {
fprintf(stderr, "error: cannot use smooth interpolation on last segment.\n");
fprintf(stderr, "reverting to linear interpolation.\n");
flam3_align(&cpi[0], &cps[i1], 2);
smoothflag = 0;
}
flam3_align(&cpi[0], &cps[i1-1], 4);
smoothflag = 1;
}
/* Clear the destination cp */
clear_cp(result, 1);
if (cpi[0].final_xform_index >= 0) {
flam3_add_xforms(result, cpi[0].num_xforms-1, 0, 0);
flam3_add_xforms(result, 1, 0, 1);
} else
flam3_add_xforms(result, cpi[0].num_xforms, 0, 0);
result->time = time;
result->interpolation = flam3_interpolation_linear;
result->interpolation_type = cpi[0].interpolation_type;
result->palette_interpolation = flam3_palette_interpolation_hsv;
if (!smoothflag) {
flam3_interpolate_n(result, 2, cpi, c, stagger);
} else {
interpolate_catmull_rom(cpi, c[1], result);
clear_cp(&(cpi[2]),0);
clear_cp(&(cpi[3]),0);
}
clear_cp(&(cpi[0]),0);
clear_cp(&(cpi[1]),0);
}
void flam3_copy_params(flam3_xform *dest, flam3_xform *src, int varn) {
/* We only want to copy param var coefs for this one */
if (varn==VAR_BLOB) {
/* Blob */
dest->blob_low = src->blob_low;
dest->blob_high = src->blob_high;
dest->blob_waves = src->blob_waves;
} else if (varn==VAR_PDJ) {
/* PDJ */
dest->pdj_a = src->pdj_a;
dest->pdj_b = src->pdj_b;
dest->pdj_c = src->pdj_c;
dest->pdj_d = src->pdj_d;
} else if (varn==VAR_FAN2) {
/* Fan2 */
dest->fan2_x = src->fan2_x;
dest->fan2_y = src->fan2_y;
} else if (varn==VAR_RINGS2) {
/* Rings2 */
dest->rings2_val = src->rings2_val;
} else if (varn==VAR_PERSPECTIVE) {
/* Perspective */
dest->perspective_angle = src->perspective_angle;
dest->perspective_dist = src->perspective_dist;
dest->persp_vsin = src->persp_vsin;
dest->persp_vfcos = src->persp_vfcos;
} else if (varn==VAR_JULIAN) {
/* Julia_N */
dest->julian_power = src->julian_power;
dest->julian_dist = src->julian_dist;
dest->julian_rN = src->julian_rN;
dest->julian_cn = src->julian_cn;
} else if (varn==VAR_JULIASCOPE) {
/* Julia_Scope */
dest->juliascope_power = src->juliascope_power;
dest->juliascope_dist = src->juliascope_dist;
dest->juliascope_rN = src->juliascope_rN;
dest->juliascope_cn = src->juliascope_cn;
} else if (varn==VAR_RADIAL_BLUR) {
/* Radial Blur */
dest->radial_blur_angle = src->radial_blur_angle;
} else if (varn==VAR_PIE) {
/* Pie */
dest->pie_slices = src->pie_slices;
dest->pie_rotation = src->pie_rotation;
dest->pie_thickness = src->pie_thickness;
} else if (varn==VAR_NGON) {
/* Ngon */
dest->ngon_sides = src->ngon_sides;
dest->ngon_power = src->ngon_power;
dest->ngon_corners = src->ngon_corners;
dest->ngon_circle = src->ngon_circle;
} else if (varn==VAR_CURL) {
/* Curl */
dest->curl_c1 = src->curl_c1;
dest->curl_c2 = src->curl_c2;
} else if (varn==VAR_RECTANGLES) {
/* Rect */
dest->rectangles_x = src->rectangles_x;
dest->rectangles_y = src->rectangles_y;
} else if (varn==VAR_DISC2) {
/* Disc2 */
dest->disc2_rot = src->disc2_rot;
dest->disc2_twist = src->disc2_twist;
} else if (varn==VAR_SUPER_SHAPE) {
/* Supershape */
dest->super_shape_rnd = src->super_shape_rnd;
dest->super_shape_m = src->super_shape_m;
dest->super_shape_n1 = src->super_shape_n1;
dest->super_shape_n2 = src->super_shape_n2;
dest->super_shape_n3 = src->super_shape_n3;
dest->super_shape_holes = src->super_shape_holes;
} else if (varn==VAR_FLOWER) {
/* Flower */
dest->flower_petals = src->flower_petals;
dest->flower_petals = src->flower_petals;
} else if (varn==VAR_CONIC) {
/* Conic */
dest->conic_eccentricity = src->conic_eccentricity;
dest->conic_holes = src->conic_holes;
} else if (varn==VAR_PARABOLA) {
/* Parabola */
dest->parabola_height = src->parabola_height;
dest->parabola_width = src->parabola_width;
} else if (varn==VAR_BENT2) {
/* Bent2 */
dest->bent2_x = src->bent2_x;
dest->bent2_y = src->bent2_y;
} else if (varn==VAR_BIPOLAR) {
/* Bipolar */
dest->bipolar_shift = src->bipolar_shift;
} else if (varn==VAR_CELL) {
/* Cell */
dest->cell_size = src->cell_size;
} else if (varn==VAR_CPOW) {
/* Cpow */
dest->cpow_i = src->cpow_i;
dest->cpow_r = src->cpow_r;
dest->cpow_power = src->cpow_power;
} else if (varn==VAR_CURVE) {
/* Curve */
dest->curve_xamp = src->curve_xamp;
dest->curve_yamp = src->curve_yamp;
dest->curve_xlength = src->curve_xlength;
dest->curve_ylength = src->curve_ylength;
} else if (varn==VAR_ESCHER) {
/* Escher */
dest->escher_beta = src->escher_beta;
} else if (varn==VAR_LAZYSUSAN) {
/* Lazysusan */
dest->lazysusan_x = src->lazysusan_x;
dest->lazysusan_y = src->lazysusan_y;
dest->lazysusan_spin = src->lazysusan_spin;
dest->lazysusan_space = src->lazysusan_space;
dest->lazysusan_twist = src->lazysusan_twist;
} else if (varn==VAR_MODULUS) {
/* Modulus */
dest->modulus_x = src->modulus_x;
dest->modulus_y = src->modulus_y;
} else if (varn==VAR_OSCILLOSCOPE) {
/* Oscope */
dest->oscope_separation = src->oscope_separation;
dest->oscope_frequency = src->oscope_frequency;
dest->oscope_amplitude = src->oscope_amplitude;
dest->oscope_damping = src->oscope_damping;
} else if (varn==VAR_POPCORN2) {
/* Popcorn2 */
dest->popcorn2_x = src->popcorn2_x;
dest->popcorn2_y = src->popcorn2_y;
dest->popcorn2_c = src->popcorn2_c;
} else if (varn==VAR_SEPARATION) {
/* Separation */
dest->separation_x = src->separation_x;
dest->separation_y = src->separation_y;
dest->separation_xinside = src->separation_xinside;
dest->separation_yinside = src->separation_yinside;
} else if (varn==VAR_SPLIT) {
/* Split */
dest->split_xsize = src->split_xsize;
dest->split_ysize = src->split_ysize;
} else if (varn==VAR_SPLITS) {
/* Splits */
dest->splits_x = src->splits_x;
dest->splits_y = src->splits_y;
} else if (varn==VAR_STRIPES) {
/* Stripes */
dest->stripes_space = src->stripes_space;
dest->stripes_warp = src->stripes_warp;
} else if (varn==VAR_WEDGE) {
/* Wedge */
dest->wedge_angle = src->wedge_angle;
dest->wedge_hole = src->wedge_hole;
dest->wedge_count = src->wedge_count;
dest->wedge_swirl = src->wedge_swirl;
} else if (varn==VAR_WEDGE_JULIA) {
/* Wedge_Julia */
dest->wedge_julia_angle = src->wedge_julia_angle;
dest->wedge_julia_count = src->wedge_julia_count;
dest->wedge_julia_power = src->wedge_julia_power;
dest->wedge_julia_dist = src->wedge_julia_dist;
dest->wedgeJulia_cf = src->wedgeJulia_cf;
dest->wedgeJulia_cn = src->wedgeJulia_cn;
dest->wedgeJulia_rN = src->wedgeJulia_rN;
} else if (varn==VAR_WEDGE_SPH) {
/* Wedge_sph */
dest->wedge_sph_angle = src->wedge_sph_angle;
dest->wedge_sph_hole = src->wedge_sph_hole;
dest->wedge_sph_count = src->wedge_sph_count;
dest->wedge_sph_swirl = src->wedge_sph_swirl;
} else if (varn==VAR_WHORL) {
/* whorl */
dest->whorl_inside = src->whorl_inside;
dest->whorl_outside = src->whorl_outside;
} else if (varn==VAR_WAVES2) {
/* waves2 */
dest->waves2_scalex = src->waves2_scalex;
dest->waves2_scaley = src->waves2_scaley;
dest->waves2_freqx = src->waves2_freqx;
dest->waves2_freqy = src->waves2_freqy;
} else if (varn==VAR_AUGER) {
/* auger */
dest->auger_sym = src->auger_sym;
dest->auger_weight = src->auger_weight;
dest->auger_freq = src->auger_freq;
dest->auger_scale = src->auger_scale;
} else if (varn==VAR_FLUX) {
/* flux */
dest->flux_spread = src->flux_spread;
} else if (varn==VAR_MOBIUS) {
/* mobius */
dest->mobius_re_a = src->mobius_re_a;
dest->mobius_re_b = src->mobius_re_b;
dest->mobius_re_c = src->mobius_re_c;
dest->mobius_re_d = src->mobius_re_d;
dest->mobius_im_a = src->mobius_im_a;
dest->mobius_im_b = src->mobius_im_b;
dest->mobius_im_c = src->mobius_im_c;
dest->mobius_im_d = src->mobius_im_d;
}