summaryrefslogtreecommitdiff
path: root/src/interpolation.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/interpolation.c')
-rw-r--r--src/interpolation.c980
1 files changed, 0 insertions, 980 deletions
diff --git a/src/interpolation.c b/src/interpolation.c
deleted file mode 100644
index 0ab1c54..0000000
--- a/src/interpolation.c
+++ /dev/null
@@ -1,980 +0,0 @@
-/*
- 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/>.
-*/
-
-#include "interpolation.h"
-#include "palettes.h"
-
-double adjust_percentage(double in) {
-
- if (in==0.0)
- return(0.0);
- else
- return(pow(10.0, -log(1.0/in)/log(2)));
-
-}
-
-double motion_funcs(int funcnum, double timeval) {
-
- /* motion funcs should be cyclic, and equal to 0 at integral time values */
- /* abs peak values should be not be greater than 1 */
- if (funcnum==MOTION_SIN) {
- return (sin(2.0*M_PI*timeval));
- } else if (funcnum==MOTION_TRIANGLE) {
- double fr = fmod(timeval,1.0);
-
- if (fr<0) fr+= 1.0;
-
- if (fr<=.25)
- fr = 4.0 * fr;
- else if (fr<=.75)
- fr = -4.0 * fr + 2.0;
- else
- fr = 4.0 * fr - 4.0;
-
- return(fr);
- } else { //if (funcnum==MOTION_HILL) {
- return( (1.0-cos(2.0*M_PI*timeval)) * 0.5);
- }
-
-}
-
-double det_matrix(double s[2][2]) {
- return s[0][0] * s[1][1] - s[0][1] * s[1][0];
-}
-
-int id_matrix(double s[3][2]) {
- return
- (s[0][0] == 1.0) &&
- (s[0][1] == 0.0) &&
- (s[1][0] == 0.0) &&
- (s[1][1] == 1.0) &&
- (s[2][0] == 0.0) &&
- (s[2][1] == 0.0);
-}
-
-int zero_matrix(double s[3][2]) {
- return
- (s[0][0] == 0.0) &&
- (s[0][1] == 0.0) &&
- (s[1][0] == 0.0) &&
- (s[1][1] == 0.0) &&
- (s[2][0] == 0.0) &&
- (s[2][1] == 0.0);
-}
-
-void copy_matrix(double to[3][2], double from[3][2]) {
-
- to[0][0] = from[0][0];
- to[0][1] = from[0][1];
- to[1][0] = from[1][0];
- to[1][1] = from[1][1];
- to[2][0] = from[2][0];
- to[2][1] = from[2][1];
-}
-
-
-void clear_matrix(double m[3][2]) {
- m[0][0] = 0.0;
- m[0][1] = 0.0;
- m[1][0] = 0.0;
- m[1][1] = 0.0;
- m[2][0] = 0.0;
- m[2][1] = 0.0;
-}
-
-void sum_matrix(double s, double m1[3][2], double m2[3][2]) {
-
- m2[0][0] += s * m1[0][0];
- m2[0][1] += s * m1[0][1];
- m2[1][0] += s * m1[1][0];
- m2[1][1] += s * m1[1][1];
- m2[2][0] += s * m1[2][0];
- m2[2][1] += s * m1[2][1];
-}
-
-void mult_matrix(double s1[2][2], double s2[2][2], double d[2][2]) {
- d[0][0] = s1[0][0] * s2[0][0] + s1[1][0] * s2[0][1];
- d[1][0] = s1[0][0] * s2[1][0] + s1[1][0] * s2[1][1];
- d[0][1] = s1[0][1] * s2[0][0] + s1[1][1] * s2[0][1];
- d[1][1] = s1[0][1] * s2[1][0] + s1[1][1] * s2[1][1];
-}
-
-int compare_xforms(const void *av, const void *bv) {
- flam3_xform *a = (flam3_xform *) av;
- flam3_xform *b = (flam3_xform *) bv;
- double aa[2][2];
- double bb[2][2];
- double ad, bd;
-
- aa[0][0] = a->c[0][0];
- aa[0][1] = a->c[0][1];
- aa[1][0] = a->c[1][0];
- aa[1][1] = a->c[1][1];
- bb[0][0] = b->c[0][0];
- bb[0][1] = b->c[0][1];
- bb[1][0] = b->c[1][0];
- bb[1][1] = b->c[1][1];
- ad = det_matrix(aa);
- bd = det_matrix(bb);
-
- if (a->color_speed > b->color_speed) return 1;
- if (a->color_speed < b->color_speed) return -1;
- if (a->color_speed) {
- if (ad < 0) return -1;
- if (bd < 0) return 1;
- ad = atan2(a->c[0][0], a->c[0][1]);
- bd = atan2(b->c[0][0], b->c[0][1]);
- }
-
- if (ad < bd) return -1;
- if (ad > bd) return 1;
- return 0;
-}
-
-void interpolate_cmap(flam3_palette cmap, double blend,
- int index0, double hue0, int index1, double hue1) {
-
- flam3_palette p0,p1;
- int i, j, rcode;
-
- rcode = flam3_get_palette(index0, p0, hue0);
- if (rcode<0)
- fprintf(stderr,"unable to retrieve palette %d, setting to white\n", index0);
- rcode = flam3_get_palette(index1, p1, hue1);
- if (rcode<0)
- fprintf(stderr,"unable to retrieve palette %d, setting to white\n", index1);
-
- for (i = 0; i < 256; i++) {
- double t[5], s[5];
-
- rgb2hsv(p0[i].color, s);
- rgb2hsv(p1[i].color, t);
-
- s[3] = p0[i].color[3];
- t[3] = p1[i].color[3];
-
- s[4] = p0[i].index;
- t[4] = p1[i].index;
-
- for (j = 0; j < 5; j++)
- t[j] = ((1.0-blend) * s[j]) + (blend * t[j]);
-
- hsv2rgb(t, cmap[i].color);
- cmap[i].color[3] = t[3];
- cmap[i].index = t[4];
- }
-}
-
-void interp_and_convert_back(double *c, int ncps, int xfi, double cxang[4][2],
- double cxmag[4][2], double cxtrn[4][2],double store_array[3][2]) {
-
- int i,col;
-
- double accang[2],accmag[2];
- double expmag;
- int accmode[2];
-
- accang[0] = 0.0;
- accang[1] = 0.0;
- accmag[0] = 0.0;
- accmag[1] = 0.0;
-
- accmode[0]=accmode[1]=0;
-
- /* accumulation mode defaults to logarithmic, but in special */
- /* cases we want to switch to linear accumulation */
- for (col=0; col<2; col++) {
- for (i=0; i<ncps; i++) {
- if (log(cxmag[i][col])<-10)
- accmode[col]=1; // Mode set to linear interp
- }
- }
-
- for (i=0; i<ncps; i++) {
- for (col=0; col<2; col++) {
-
- accang[col] += c[i] * cxang[i][col];
-
- if (accmode[col]==0)
- accmag[col] += c[i] * log(cxmag[i][col]);
- else
- accmag[col] += c[i] * (cxmag[i][col]);
-
- /* translation is ready to go */
- store_array[2][col] += c[i] * cxtrn[i][col];
- }
- }
-
- /* Convert the angle back to rectangular */
- for (col=0;col<2;col++) {
- if (accmode[col]==0)
- expmag = exp(accmag[col]);
- else
- expmag = accmag[col];
-
- store_array[col][0] = expmag * cos(accang[col]);
- store_array[col][1] = expmag * sin(accang[col]);
- }
-
-}
-
-void convert_linear_to_polar(flam3_genome *cp, int ncps, int xfi, int cflag,
- double cxang[4][2], double cxmag[4][2], double cxtrn[4][2]) {
-
- double c1[2],d,t,refang;
- int col,k;
- int zlm[2];
-
- for (k=0; k<ncps;k++) {
-
- /* Establish the angles and magnitudes for each component */
- /* Keep translation linear */
- zlm[0]=zlm[1]=0;
- for (col=0;col<2;col++) {
-
- if (cflag==0) {
- c1[0] = cp[k].xform[xfi].c[col][0];
- c1[1] = cp[k].xform[xfi].c[col][1];
- t = cp[k].xform[xfi].c[2][col];
- } else {
- c1[0] = cp[k].xform[xfi].post[col][0];
- c1[1] = cp[k].xform[xfi].post[col][1];
- t = cp[k].xform[xfi].post[2][col];
- }
-
- cxang[k][col] = atan2(c1[1],c1[0]);
- cxmag[k][col] = sqrt(c1[0]*c1[0] + c1[1]*c1[1]);
-
- if (cxmag[k][col]== 0.0)
- zlm[col]=1;
-
- cxtrn[k][col] = t;
- }
-
- if (zlm[0]==1 && zlm[1]==0)
- cxang[k][0] = cxang[k][1];
- else if (zlm[0]==0 && zlm[1]==1)
- cxang[k][1] = cxang[k][0];
-
- }
-
- /* Make sure the rotation is the shorter direction around the circle */
- /* by adjusting each angle in succession, and rotate clockwise if 180 degrees */
- for (col=0; col<2; col++) {
- for (k=1;k<ncps;k++) {
-
- /* Adjust angles differently if we have an asymmetric case */
- if (cp[k].xform[xfi].wind[col]>0 && cflag==0) {
-
- /* Adjust the angles to make sure that it's within wind:wind+2pi */
- refang = cp[k].xform[xfi].wind[col] - 2*M_PI;
-
- /* Make sure both angles are within [refang refang+2*pi] */
- while(cxang[k-1][col] < refang)
- cxang[k-1][col] += 2*M_PI;
-
- while(cxang[k-1][col] > refang + 2*M_PI)
- cxang[k-1][col] -= 2*M_PI;
-
- while(cxang[k][col] < refang)
- cxang[k][col] += 2*M_PI;
-
- while(cxang[k][col] > refang + 2*M_PI)
- cxang[k][col] -= 2*M_PI;
-
- } else {
-
- /* Normal way of adjusting angles */
- d = cxang[k][col]-cxang[k-1][col];
-
- /* Adjust to avoid the -pi/pi discontinuity */
- if (d > M_PI+EPS)
- cxang[k][col] -= 2*M_PI;
- else if (d < -(M_PI-EPS) ) /* Forces clockwise rotation at 180 */
- cxang[k][col] += 2*M_PI;
- }
- }
- }
-}
-
-void interpolate_catmull_rom(flam3_genome cps[], double t, flam3_genome *result) {
- double t2 = t * t;
- double t3 = t2 * t;
- double cmc[4];
-
- cmc[0] = (2*t2 - t - t3) / 2;
- cmc[1] = (3*t3 - 5*t2 + 2) / 2;
- cmc[2] = (4*t2 - 3*t3 + t) / 2;
- cmc[3] = (t3 - t2) / 2;
-
- flam3_interpolate_n(result, 4, cps, cmc, 0);
-}
-
-double smoother(double t) {
- return 3*t*t - 2*t*t*t;
-}
-
-double get_stagger_coef(double t, double stagger_prc, int num_xforms, int this_xform) {
-
- /* max_stag is the spacing between xform start times if stagger_prc = 1.0 */
- double max_stag = (double)(num_xforms-1)/num_xforms;
-
- /* scale the spacing by stagger_prc */
- double stag_scaled = stagger_prc * max_stag;
-
- /* t ranges from 1 to 0 (the contribution of cp[0] to the blend) */
- /* the first line below makes the first xform interpolate first */
- /* the second line makes the last xform interpolate first */
- double st = stag_scaled * (num_xforms - 1 - this_xform) / (num_xforms-1);
-// double st = stag_scaled * (this_xform) / (num_xforms-1);
- double et = st + (1-stag_scaled);
-
-// printf("t=%f xf:%d st=%f et=%f : : %f\n",t,this_xform,st,et,smoother((t-st)/(1-stag_scaled)));
-
- if (t <= st)
- return (0);
- else if (t >= et)
- return (1);
- else
- return ( smoother((t-st)/(1-stag_scaled)) );
-
-}
-
-
-
-/* all cpi and result must be aligned (have the same number of xforms,
- and have final xform in the same slot) */
-void flam3_interpolate_n(flam3_genome *result, int ncp,
- flam3_genome *cpi, double *c, double stagger) {
- int i, j, k, numstd;
-
- if (flam3_palette_interpolation_hsv == cpi[0].palette_interpolation) {
-
- for (i = 0; i < 256; i++) {
- double t[3], s[5];
- int alpha1 = 1;
-
- s[0] = s[1] = s[2] = s[3] = s[4] = 0.0;
-
- for (k = 0; k < ncp; k++) {
- rgb2hsv(cpi[k].palette[i].color, t);
- for (j = 0; j < 3; j++)
- s[j] += c[k] * t[j];
-
- s[3] += c[k] * cpi[k].palette[i].color[3];
- if (cpi[k].palette[i].color[3] != 1.0)
- alpha1 = 0;
- s[4] += c[k] * cpi[k].palette[i].index;
-
- }
-
- if (alpha1 == 1)
- s[3] = 1.0;
-
- hsv2rgb(s, result->palette[i].color);
- result->palette[i].color[3] = s[3];
- result->palette[i].index = s[4];
-
- for (j = 0; j < 4; j++) {
- if (result->palette[i].color[j] < 0.0)
- result->palette[i].color[j] = 0.0;
- if (result->palette[i].color[j] > 1.0)
- result->palette[i].color[j] = 1.0;
- }
-
- if (result->palette[i].index < 0.0)
- result->palette[i].index = 0.0;
- if (result->palette[i].index > 255.0)
- result->palette[i].index = 255.0;
- }
- } else {
- /* Sweep - not the best option for float indices */
- for (i = 0; i < 256; i++) {
- j = (i < (256 * c[0])) ? 0 : 1;
- result->palette[i] = cpi[j].palette[i];
- }
- }
-
- result->palette_index = flam3_palette_random;
- result->symmetry = 0;
- result->spatial_filter_select = cpi[0].spatial_filter_select;
- result->temporal_filter_type = cpi[0].temporal_filter_type;
- result->palette_mode = cpi[0].palette_mode;
-
- result->interpolation_type = cpi[0].interpolation_type;
- INTERP(brightness);
- INTERP(contrast);
- INTERP(highlight_power);
- INTERP(gamma);
- INTERP(vibrancy);
- INTERP(hue_rotation);
- INTERI(width);
- INTERI(height);
- INTERI(spatial_oversample);
- INTERP(center[0]);
- INTERP(center[1]);
- INTERP(rot_center[0]);
- INTERP(rot_center[1]);
- INTERP(background[0]);
- INTERP(background[1]);
- INTERP(background[2]);
- INTERP(pixels_per_unit);
- INTERP(spatial_filter_radius);
- INTERP(temporal_filter_exp);
- INTERP(temporal_filter_width);
- INTERP(sample_density);
- INTERP(zoom);
- INTERP(rotate);
- INTERI(nbatches);
- INTERI(ntemporal_samples);
- INTERP(estimator);
- INTERP(estimator_minimum);
- INTERP(estimator_curve);
- INTERP(gam_lin_thresh);
-
- /* Interpolate the chaos array */
- numstd = cpi[0].num_xforms - (cpi[0].final_xform_index >= 0);
- for (i=0;i<numstd;i++) {
- for (j=0;j<numstd;j++) {
- INTERP(chaos[i][j]);
- if (result->chaos[i][j]<0) result->chaos[i][j]=0;
- //chaos can be > 1
- //if (result->chaos[i][j]>1) result->chaos[i][j]=1.0;
- }
- }
-
- /* Interpolate each xform */
- for (i = 0; i < cpi[0].num_xforms; i++) {
-
- double csave[2];
- double td;
- int all_id;
- int nx = cpi[0].num_xforms-(cpi[0].final_xform_index>=0);
-
- if (ncp==2 && stagger>0 && i!=cpi[0].final_xform_index) {
- csave[0] = c[0];
- csave[1] = c[1];
- c[0] = get_stagger_coef(csave[0],stagger,nx,i);
- c[1] = 1.0-c[0];
- }
-
-
- INTERP(xform[i].density);
- td = result->xform[i].density;
- result->xform[i].density = (td < 0.0) ? 0.0 : td;
- INTERP(xform[i].color);
- if (result->xform[i].color<0) result->xform[i].color=0;
- if (result->xform[i].color>1) result->xform[i].color=1;
-
- INTERP(xform[i].color_speed);
- if (result->xform[i].color_speed<0) result->xform[i].color_speed=0;
- if (result->xform[i].color_speed>1) result->xform[i].color_speed=1;
-
- INTERP(xform[i].opacity);
- INTERP(xform[i].animate);
- INTERP(xform[i].blob_low);
- INTERP(xform[i].blob_high);
- INTERP(xform[i].blob_waves);
- INTERP(xform[i].pdj_a);
- INTERP(xform[i].pdj_b);
- INTERP(xform[i].pdj_c);
- INTERP(xform[i].pdj_d);
- INTERP(xform[i].fan2_x);
- INTERP(xform[i].fan2_y);
- INTERP(xform[i].rings2_val);
- INTERP(xform[i].perspective_angle);
- INTERP(xform[i].perspective_dist);
- INTERP(xform[i].julian_power);
- INTERP(xform[i].julian_dist);
- INTERP(xform[i].juliascope_power);
- INTERP(xform[i].juliascope_dist);
- INTERP(xform[i].radial_blur_angle);
- INTERP(xform[i].pie_slices);
- INTERP(xform[i].pie_rotation);
- INTERP(xform[i].pie_thickness);
- INTERP(xform[i].ngon_sides);
- INTERP(xform[i].ngon_power);
- INTERP(xform[i].ngon_circle);
- INTERP(xform[i].ngon_corners);
- INTERP(xform[i].curl_c1);
- INTERP(xform[i].curl_c2);
- INTERP(xform[i].rectangles_x);
- INTERP(xform[i].rectangles_y);
- INTERP(xform[i].amw_amp);
- INTERP(xform[i].disc2_rot);
- INTERP(xform[i].disc2_twist);
- INTERP(xform[i].super_shape_rnd);
- INTERP(xform[i].super_shape_m);
- INTERP(xform[i].super_shape_n1);
- INTERP(xform[i].super_shape_n2);
- INTERP(xform[i].super_shape_n3);
- INTERP(xform[i].super_shape_holes);
- INTERP(xform[i].flower_petals);
- INTERP(xform[i].flower_holes);
- INTERP(xform[i].conic_eccentricity);
- INTERP(xform[i].conic_holes);
- INTERP(xform[i].parabola_height);
- INTERP(xform[i].parabola_width);
- INTERP(xform[i].bent2_x);
- INTERP(xform[i].bent2_y);
- INTERP(xform[i].bipolar_shift);
- INTERP(xform[i].cell_size);
- INTERP(xform[i].cpow_r);
- INTERP(xform[i].cpow_i);
- INTERP(xform[i].cpow_power);
- INTERP(xform[i].curve_xamp);
- INTERP(xform[i].curve_yamp);
- INTERP(xform[i].curve_xlength);
- INTERP(xform[i].curve_ylength);
- INTERP(xform[i].escher_beta);
- INTERP(xform[i].lazysusan_x);
- INTERP(xform[i].lazysusan_y);
- INTERP(xform[i].lazysusan_twist);
- INTERP(xform[i].lazysusan_space);
- INTERP(xform[i].lazysusan_spin);
- INTERP(xform[i].modulus_x);
- INTERP(xform[i].modulus_y);
- INTERP(xform[i].oscope_separation);
- INTERP(xform[i].oscope_frequency);
- INTERP(xform[i].oscope_amplitude);
- INTERP(xform[i].oscope_damping);
- INTERP(xform[i].popcorn2_x);
- INTERP(xform[i].popcorn2_y);
- INTERP(xform[i].popcorn2_c);
- INTERP(xform[i].separation_x);
- INTERP(xform[i].separation_xinside);
- INTERP(xform[i].separation_y);
- INTERP(xform[i].separation_yinside);
- INTERP(xform[i].split_xsize);
- INTERP(xform[i].split_ysize);
- INTERP(xform[i].splits_x);
- INTERP(xform[i].splits_y);
- INTERP(xform[i].stripes_space);
- INTERP(xform[i].stripes_warp);
- INTERP(xform[i].wedge_angle);
- INTERP(xform[i].wedge_hole);
- INTERP(xform[i].wedge_count);
- INTERP(xform[i].wedge_swirl);
- INTERP(xform[i].wedge_julia_angle);
- INTERP(xform[i].wedge_julia_count);
- INTERP(xform[i].wedge_julia_power);
- INTERP(xform[i].wedge_julia_dist);
- INTERP(xform[i].wedge_sph_angle);
- INTERP(xform[i].wedge_sph_hole);
- INTERP(xform[i].wedge_sph_count);
- INTERP(xform[i].wedge_sph_swirl);
- INTERP(xform[i].whorl_inside);
- INTERP(xform[i].whorl_outside);
- INTERP(xform[i].waves2_scalex);
- INTERP(xform[i].waves2_scaley);
- INTERP(xform[i].waves2_freqx);
- INTERP(xform[i].waves2_freqy);
- INTERP(xform[i].auger_sym);
- INTERP(xform[i].auger_weight);
- INTERP(xform[i].auger_freq);
- INTERP(xform[i].auger_scale);
- INTERP(xform[i].flux_spread);
- INTERP(xform[i].mobius_re_a);
- INTERP(xform[i].mobius_im_a);
- INTERP(xform[i].mobius_re_b);
- INTERP(xform[i].mobius_im_b);
- INTERP(xform[i].mobius_re_c);
- INTERP(xform[i].mobius_im_c);
- INTERP(xform[i].mobius_re_d);
- INTERP(xform[i].mobius_im_d);
-
- for (j = 0; j < flam3_nvariations; j++)
- INTERP(xform[i].var[j]);
-
- if (flam3_inttype_log == cpi[0].interpolation_type) {
- double cxmag[4][2]; // XXX why only 4? should be ncp
- double cxang[4][2];
- double cxtrn[4][2];
-
- /* affine part */
- clear_matrix(result->xform[i].c);
- convert_linear_to_polar(cpi,ncp,i,0,cxang,cxmag,cxtrn);
- interp_and_convert_back(c, ncp, i, cxang, cxmag, cxtrn,result->xform[i].c);
-
- /* post part */
- all_id = 1;
- for (k=0; k<ncp; k++)
- all_id &= id_matrix(cpi[k].xform[i].post);
-
- clear_matrix(result->xform[i].post);
- if (all_id) {
- result->xform[i].post[0][0] = 1.0;
- result->xform[i].post[1][1] = 1.0;
- } else {
- convert_linear_to_polar(cpi,ncp,i,1,cxang,cxmag,cxtrn);
- interp_and_convert_back(c, ncp, i, cxang, cxmag, cxtrn,result->xform[i].post);
- }
-
- } else {
-
- /* Interpolate c matrix & post */
- clear_matrix(result->xform[i].c);
- clear_matrix(result->xform[i].post);
- all_id = 1;
- for (k = 0; k < ncp; k++) {
- sum_matrix(c[k], cpi[k].xform[i].c, result->xform[i].c);
- sum_matrix(c[k], cpi[k].xform[i].post, result->xform[i].post);
-
- all_id &= id_matrix(cpi[k].xform[i].post);
-
- }
- if (all_id) {
- clear_matrix(result->xform[i].post);
- result->xform[i].post[0][0] = 1.0;
- result->xform[i].post[1][1] = 1.0;
- }
- }
-
- if (ncp==2 && stagger>0 && i!=cpi[0].final_xform_index) {
- c[0] = csave[0];
- c[1] = csave[1];
- }
-
- }
-
-}
-
-void establish_asymmetric_refangles(flam3_genome *cp, int ncps) {
-
- int k, xfi, col;
-
- double cxang[4][2],d,c1[2];
-
- for (xfi=0; xfi<cp[0].num_xforms; xfi++) {
-
- /* Final xforms don't rotate regardless of their symmetry */
- if (cp[0].final_xform_enable==1 && xfi==cp[0].final_xform_index)
- continue;
-
- for (k=0; k<ncps;k++) {
-
- /* Establish the angle for each component */
- /* Should potentially functionalize */
- for (col=0;col<2;col++) {
-
- c1[0] = cp[k].xform[xfi].c[col][0];
- c1[1] = cp[k].xform[xfi].c[col][1];
-
- cxang[k][col] = atan2(c1[1],c1[0]);
- }
- }
-
- for (k=1; k<ncps; k++) {
-
- for (col=0;col<2;col++) {
-
- int sym0,sym1;
- int padsymflag;
-
- d = cxang[k][col]-cxang[k-1][col];
-
- /* Adjust to avoid the -pi/pi discontinuity */
- if (d > M_PI+EPS)
- cxang[k][col] -= 2*M_PI;
- else if (d < -(M_PI-EPS) )
- cxang[k][col] += 2*M_PI;
-
- /* If this is an asymmetric case, store the NON-symmetric angle */
- /* Check them pairwise and store the reference angle in the second */
- /* to avoid overwriting if asymmetric on both sides */
- padsymflag = 0;
-
- sym0 = (cp[k-1].xform[xfi].animate==0 || (cp[k-1].xform[xfi].padding==1 && padsymflag));
- sym1 = (cp[k].xform[xfi].animate==0 || (cp[k].xform[xfi].padding==1 && padsymflag));
-
- if ( sym1 && !sym0 )
- cp[k].xform[xfi].wind[col] = cxang[k-1][col] + 2*M_PI;
- else if ( sym0 && !sym1 )
- cp[k].xform[xfi].wind[col] = cxang[k][col] + 2*M_PI;
-
- }
- }
- }
-}
-
-void flam3_align(flam3_genome *dst, flam3_genome *src, int nsrc) {
- int i, tfx, tnx, max_nx = 0, max_fx = 0;
- int already_aligned=1;
- int xf,j;
- int ii,fnd;
- double normed;
- int usethisone;
-
- usethisone = (nsrc/2) - 1;
-
- max_nx = src[0].num_xforms - (src[0].final_xform_index >= 0);
- max_fx = src[0].final_xform_enable;
-
- for (i = 1; i < nsrc; i++) {
- tnx = src[i].num_xforms - (src[i].final_xform_index >= 0);
- if (max_nx != tnx) {
- already_aligned = 0;
- if (tnx > max_nx) max_nx = tnx;
- }
-
- tfx = src[i].final_xform_enable;
- if (max_fx != tfx) {
- already_aligned = 0;
- max_fx |= tfx;
- }
- }
-
- /* Pad the cps to equal xforms */
- for (i = 0; i < nsrc; i++) {
- flam3_copyx(&dst[i], &src[i], max_nx, max_fx);
- }
-
- /* Skip if this genome is compatibility mode */
- if (dst[usethisone].interpolation_type == flam3_inttype_compat ||
- dst[usethisone].interpolation_type == flam3_inttype_older)
- return;
-
-
- /* Check to see if there's a parametric variation present in one xform */
- /* but not in an aligned xform. If this is the case, use the parameters */
- /* from the xform with the variation as the defaults for the blank one. */
-
- /* All genomes will have the same number of xforms at this point */
- /* num = max_nx + max_fx */
- for (i = 0; i<nsrc; i++) {
-
-
- for (xf = 0; xf<max_nx+max_fx; xf++) {
-
- /* Loop over the variations to see which of them are set to 0 */
- /* Note that there are no parametric variations < 23 */
- for (j = 23; j < flam3_nvariations; j++) {
-
- if (dst[i].xform[xf].var[j]==0) {
-
- if (i>0) {
-
- /* Check to see if the prior genome's xform is populated */
- if (dst[i-1].xform[xf].var[j] != 0) {
-
- /* Copy the prior genome's parameters and continue */
- flam3_copy_params(&(dst[i].xform[xf]), &(dst[i-1].xform[xf]), j);
- continue;
- }
-
- } else if (i<nsrc-1) {
-
- /* Check to see if the next genome's xform is populated */
- if (dst[i+1].xform[xf].var[j] != 0) {
-
- /* Copy the next genome's parameters and continue */
- flam3_copy_params(&(dst[i].xform[xf]), &(dst[i+1].xform[xf]), j);
- continue;
- }
- }
- }
- } /* variations */
-
- if (dst[i].xform[xf].padding == 1 && !already_aligned) {
-
- /* This is a new xform. Let's see if we can choose a better 'identity' xform. */
- /* Check the neighbors to see if any of these variations are used: */
- /* rings2, fan2, blob, perspective, julian, juliascope, ngon, curl, super_shape, split */
- /* If so, we can use a better starting point for these */
-
- /* Remove linear from the list */
- dst[i].xform[xf].var[0] = 0.0;
-
- /* Look through all of the 'companion' xforms to see if we get a match on any of these */
- fnd=0;
-
- /* Only do the next substitution for log interpolation */
- if ( (i==0 && dst[i].interpolation_type == flam3_inttype_log)
- || (i>0 && dst[i-1].interpolation_type==flam3_inttype_log) ) {
-
- for (ii=-1; ii<=1; ii+=2) {
-
- /* Skip if out of bounds */
- if (i+ii<0 || i+ii>=nsrc)
- continue;
-
- /* Skip if this is also padding */
- if (dst[i+ii].xform[xf].padding==1)
- continue;
-
- /* Spherical / Ngon (trumps all others due to holes) */
- /* Interpolate these against a 180 degree rotated identity */
- /* with weight -1. */
- /* Added JULIAN/JULIASCOPE to get rid of black wedges */
- if (dst[i+ii].xform[xf].var[VAR_SPHERICAL]>0 ||
- dst[i+ii].xform[xf].var[VAR_NGON]>0 ||
- dst[i+ii].xform[xf].var[VAR_JULIAN]>0 ||
- dst[i+ii].xform[xf].var[VAR_JULIASCOPE]>0 ||
- dst[i+ii].xform[xf].var[VAR_POLAR]>0 ||
- dst[i+ii].xform[xf].var[VAR_WEDGE_SPH]>0 ||
- dst[i+ii].xform[xf].var[VAR_WEDGE_JULIA]>0) {
-
- dst[i].xform[xf].var[VAR_LINEAR] = -1.0;
- /* Set the coefs appropriately */
- dst[i].xform[xf].c[0][0] = -1.0;
- dst[i].xform[xf].c[0][1] = 0.0;
- dst[i].xform[xf].c[1][0] = 0.0;
- dst[i].xform[xf].c[1][1] = -1.0;
- dst[i].xform[xf].c[2][0] = 0.0;
- dst[i].xform[xf].c[2][1] = 0.0;
- fnd=-1;
- }
- }
-
- }
-
- if (fnd==0) {
-
- for (ii=-1; ii<=1; ii+=2) {
-
- /* Skip if out of bounds */
- if (i+ii<0 || i+ii>=nsrc)
- continue;
-
- /* Skip if also padding */
- if (dst[i+ii].xform[xf].padding==1)
- continue;
-
- /* Rectangles */
- if (dst[i+ii].xform[xf].var[VAR_RECTANGLES]>0) {
- dst[i].xform[xf].var[VAR_RECTANGLES] = 1.0;
- dst[i].xform[xf].rectangles_x = 0.0;
- dst[i].xform[xf].rectangles_y = 0.0;
- fnd++;
- }
-
- /* Rings 2 */
- if (dst[i+ii].xform[xf].var[VAR_RINGS2]>0) {
- dst[i].xform[xf].var[VAR_RINGS2] = 1.0;
- dst[i].xform[xf].rings2_val = 0.0;
- fnd++;
- }
-
- /* Fan 2 */
- if (dst[i+ii].xform[xf].var[VAR_FAN2]>0) {
- dst[i].xform[xf].var[VAR_FAN2] = 1.0;
- dst[i].xform[xf].fan2_x = 0.0;
- dst[i].xform[xf].fan2_y = 0.0;
- fnd++;
- }
-
- /* Blob */
- if (dst[i+ii].xform[xf].var[VAR_BLOB]>0) {
- dst[i].xform[xf].var[VAR_BLOB] = 1.0;
- dst[i].xform[xf].blob_low = 1.0;
- dst[i].xform[xf].blob_high = 1.0;
- dst[i].xform[xf].blob_waves = 1.0;
- fnd++;
- }
-
- /* Perspective */
- if (dst[i+ii].xform[xf].var[VAR_PERSPECTIVE]>0) {
- dst[i].xform[xf].var[VAR_PERSPECTIVE] = 1.0;
- dst[i].xform[xf].perspective_angle = 0.0;
- /* Keep the perspective distance as-is */
- fnd++;
- }
-
- /* Curl */
- if (dst[i+ii].xform[xf].var[VAR_CURL]>0) {
- dst[i].xform[xf].var[VAR_CURL] = 1.0;
- dst[i].xform[xf].curl_c1 = 0.0;
- dst[i].xform[xf].curl_c2 = 0.0;
- fnd++;
- }
-
- /* Super-Shape */
- if (dst[i+ii].xform[xf].var[VAR_SUPER_SHAPE]>0) {
- dst[i].xform[xf].var[VAR_SUPER_SHAPE] = 1.0;
- /* Keep supershape_m the same */
- dst[i].xform[xf].super_shape_n1 = 2.0;
- dst[i].xform[xf].super_shape_n2 = 2.0;
- dst[i].xform[xf].super_shape_n3 = 2.0;
- dst[i].xform[xf].super_shape_rnd = 0.0;
- dst[i].xform[xf].super_shape_holes = 0.0;
- fnd++;
- }
- }
- }
-
- /* If we didn't have any matches with those, */
- /* try the affine ones, fan and rings */
- if (fnd==0) {
-
- for (ii=-1; ii<=1; ii+=2) {
-
- /* Skip if out of bounds */
- if (i+ii<0 || i+ii>=nsrc)
- continue;
-
- /* Skip if also a padding xform */
- if (dst[i+ii].xform[xf].padding==1)
- continue;
-
- /* Fan */
- if (dst[i+ii].xform[xf].var[VAR_FAN]>0) {
- dst[i].xform[xf].var[VAR_FAN] = 1.0;
- fnd++;
- }
-
- /* Rings */
- if (dst[i+ii].xform[xf].var[VAR_RINGS]>0) {
- dst[i].xform[xf].var[VAR_RINGS] = 1.0;
- fnd++;
- }
-
- }
-
- if (fnd>0) {
- /* Set the coefs appropriately */
- dst[i].xform[xf].c[0][0] = 0.0;
- dst[i].xform[xf].c[0][1] = 1.0;
- dst[i].xform[xf].c[1][0] = 1.0;
- dst[i].xform[xf].c[1][1] = 0.0;
- dst[i].xform[xf].c[2][0] = 0.0;
- dst[i].xform[xf].c[2][1] = 0.0;
- }
- }
-
- /* If we still have no matches, switch back to linear */
- if (fnd==0)
-
- dst[i].xform[xf].var[VAR_LINEAR] = 1.0;
-
- else if (fnd>0) {
-
- /* Otherwise, go through and normalize the weights. */
- normed = 0.0;
- for (j = 0; j < flam3_nvariations; j++)
- normed += dst[i].xform[xf].var[j];
-
- for (j = 0; j < flam3_nvariations; j++)
- dst[i].xform[xf].var[j] /= normed;
-
- }
- }
- } /* xforms */
- } /* genomes */
-
-}
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 09:39:34 +0000