1 /* swfc- Compiles swf code (.sc) files into .swf files.
3 Part of the swftools package.
5 Copyright (c) 2007 Huub Schaeks <huub@h-schaeks.speedlinq.nl>
6 Copyright (c) 2007 Matthias Kramm <kramm@quiss.org>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
24 #include "swfc-history.h"
33 state_t* state_new(U16 frame, int function, float value, interpolation_t* inter)
35 state_t* newState = (state_t*)malloc(sizeof(state_t));
37 newState->frame = frame;
38 newState->function = function;
39 newState->value = value;
40 newState->interpolation = inter;
44 void state_free(state_t* state)
47 state_free(state->next);
51 void state_init(state_t* state)
53 memset(state, 0, sizeof(state_t));
56 state_t* state_at(state_t* state, U16 frame)
58 while (state->next && state->next->frame < frame)
63 void state_append(state_t* state, state_t* newState)
65 state_t* previous = 0;
66 state_t* start = state;
68 int previous_frames = 0, state_frames, new_frames;
73 previous_frames = state->frame - previous->frame;
77 state->next = newState;
78 new_frames = newState->frame - state->frame;
79 if (state->function == CF_SCHANGE)
81 state_frames = state->frame - previous->frame;
84 if (previous->function == CF_SCHANGE)
85 m0 = (3 * previous->spline.a + 2 * previous->spline.b + previous->spline.c) * state_frames / previous_frames ;
87 if (previous->function == CF_CHANGE || previous->function == CF_SWEEP)
88 m0 = state_tangent(start, previous->frame, T_BEFORE) * state_frames;
90 m0 = (state->value - previous->value);
91 if (newState->function == CF_SCHANGE)
92 m1 = /*0.5 * */(newState->value - previous->value) * state_frames / (new_frames + state_frames);
94 if (newState->function == CF_CHANGE || newState->function == CF_SWEEP)
95 m1 = state_tangent(previous, state->frame, T_AFTER) * state_frames;
97 m1 = (newState->value - state->value);
98 state->spline.a = 2 * p0 + m0 - 2 * p1 + m1;
99 state->spline.b = -3 * p0 - 2 * m0 + 3 * p1 - m1;
100 state->spline.c = m0;
101 state->spline.d = p0;
102 // printf("p0: %f, p1: %f, m0: %f, m1: %f.\n", p0, p1, m0, m1);
103 // printf("a: %f, b: %f, c: %f, d: %f.\n", state->spline.a, state->spline.b, state->spline.c, state->spline.d);
105 if (newState->function == CF_SCHANGE)
108 p1 = newState->value;
109 if (state->function == CF_SCHANGE)
112 if (state->function == CF_CHANGE || state->function == CF_SWEEP)
113 m0 = state_tangent(start, state->frame, T_BEFORE) * new_frames;
115 m0 = (newState->value - state->value);
116 m1 = (newState->value - state->value);
117 newState->spline.a = 2 * p0 + m0 - 2 * p1 + m1;
118 newState->spline.b = -3 * p0 - 2 * m0 + 3 * p1 - m1;
119 newState->spline.c = m0;
120 newState->spline.d = p0;
121 // printf("p0: %f, p1: %f, m0: %f, m1: %f.\n", p0, p1, m0, m1);
122 // printf("a: %f, b: %f, c: %f, d: %f.\n", newState->spline.a, newState->spline.b, newState->spline.c, newState->spline.d);
126 void state_insert(state_t* state, state_t* newState)
128 while (state->next && state->next->frame < newState->frame)
130 newState->next = state->next;
131 state->next = newState;
132 // if this is going to be used to insert CF_SCHANGE states it will have to be extended
133 // as in state_append above. I know this is not necessary right now, so I'll be lazy.
136 float calculateSpline(state_t* modification, float fraction)
138 spline_t s = modification->spline;
139 return (((s.a * fraction) + s.b) * fraction + s.c) * fraction + s.d;
142 float interpolateScalar(float p1, float p2, float fraction, interpolation_t* inter)
145 return linear(fraction, p1, p2 - p1);
146 switch (inter->function)
148 case IF_LINEAR: return linear(fraction, p1, p2 - p1);
149 case IF_QUAD_IN: return quadIn(fraction, p1, p2 - p1, inter->slope);
150 case IF_QUAD_OUT: return quadOut(fraction, p1, p2 - p1, inter->slope);
151 case IF_QUAD_IN_OUT: return quadInOut(fraction, p1, p2 - p1, inter->slope);
152 case IF_CUBIC_IN: return cubicIn(fraction, p1, p2 - p1, inter->slope);
153 case IF_CUBIC_OUT: return cubicOut(fraction, p1, p2 - p1, inter->slope);
154 case IF_CUBIC_IN_OUT: return cubicInOut(fraction, p1, p2 - p1, inter->slope);
155 case IF_QUART_IN: return quartIn(fraction, p1, p2 - p1, inter->slope);
156 case IF_QUART_OUT: return quartOut(fraction, p1, p2 - p1, inter->slope);
157 case IF_QUART_IN_OUT: return quartInOut(fraction, p1, p2 - p1, inter->slope);
158 case IF_QUINT_IN: return quintIn(fraction, p1, p2 - p1, inter->slope);
159 case IF_QUINT_OUT: return quintOut(fraction, p1, p2 - p1, inter->slope);
160 case IF_QUINT_IN_OUT: return quintInOut(fraction, p1, p2 - p1, inter->slope);
161 case IF_CIRCLE_IN: return circleIn(fraction, p1, p2 - p1, inter->slope);
162 case IF_CIRCLE_OUT: return circleOut(fraction, p1, p2 - p1, inter->slope);
163 case IF_CIRCLE_IN_OUT: return circleInOut(fraction, p1, p2 - p1, inter->slope);
164 case IF_EXPONENTIAL_IN: return exponentialIn(fraction, p1, p2 - p1);
165 case IF_EXPONENTIAL_OUT: return exponentialOut(fraction, p1, p2 - p1);
166 case IF_EXPONENTIAL_IN_OUT: return exponentialInOut(fraction, p1, p2 - p1);
167 case IF_SINE_IN: return sineIn(fraction, p1, p2 - p1);
168 case IF_SINE_OUT: return sineOut(fraction, p1, p2 - p1);
169 case IF_SINE_IN_OUT: return sineInOut(fraction, p1, p2 - p1);
170 case IF_ELASTIC_IN: return elasticIn(fraction, p1, p2 - p1, inter->amplitude, inter->bounces, inter->damping);
171 case IF_ELASTIC_OUT: return elasticOut(fraction, p1, p2 - p1, inter->amplitude, inter->bounces, inter->damping);
172 case IF_ELASTIC_IN_OUT: return elasticInOut(fraction, p1, p2 - p1, inter->amplitude, inter->bounces, inter->damping);
173 case IF_BACK_IN: return backIn(fraction, p1, p2 - p1, inter->speed);
174 case IF_BACK_OUT: return backOut(fraction, p1, p2 - p1, inter->speed);
175 case IF_BACK_IN_OUT: return backInOut(fraction, p1, p2 - p1, inter->speed);
176 case IF_BOUNCE_IN: return bounceIn(fraction, p1, p2 - p1, inter->bounces, inter->growth, inter->damping);
177 case IF_BOUNCE_OUT: return bounceOut(fraction, p1, p2 - p1, inter->bounces, inter->growth, inter->damping);
178 case IF_BOUNCE_IN_OUT: return bounceInOut(fraction, p1, p2 - p1, inter->bounces, inter->growth, inter->damping);
179 case IF_FAST_BOUNCE_IN: return fastBounceIn(fraction, p1, p2 - p1, inter->bounces, inter->growth, inter->damping);
180 case IF_FAST_BOUNCE_OUT: return fastBounceOut(fraction, p1, p2 - p1, inter->bounces, inter->growth, inter->damping);
181 case IF_FAST_BOUNCE_IN_OUT: return fastBounceInOut(fraction, p1, p2 - p1, inter->bounces, inter->growth, inter->damping);
182 default: return linear(fraction, p1, p2 - p1);
186 float calculateSweep(state_t* modification, float fraction)
188 arc_t* a = &(modification->arc);
189 float angle = a->angle + fraction * a->delta_angle;
191 return a->cX + a->r * cos(angle);
193 return a->cY + a->r * sin(angle);
197 int state_differs(state_t* modification, U16 frame)
199 state_t* previous = modification;
200 while (modification && modification->frame < frame)
202 previous = modification;
203 modification = modification->next;
207 if (modification->frame == frame)
209 return (modification->function != CF_JUMP);
212 float state_tangent(state_t* modification, U16 frame, int tangent)
214 float deltaFrame = 0.1;
218 return (state_value(modification, frame) - state_value(modification, frame - deltaFrame)) / deltaFrame;
220 return (state_value(modification, frame + deltaFrame) - state_value(modification, frame)) / deltaFrame;
222 return (state_value(modification, frame + deltaFrame) - state_value(modification, frame - deltaFrame)) / (2 * deltaFrame);
226 float state_value(state_t* modification, float frame)
228 state_t* previous = modification;
229 while (modification && modification->frame < frame)
231 previous = modification;
232 modification = modification->next;
235 return previous->value;
236 if (modification->frame == frame)
240 previous = modification;
241 modification = modification->next;
243 while (modification && modification->frame == frame);
244 return previous->value;
246 switch (modification->function)
249 return modification->value;
252 float fraction = (frame - previous->frame) / (float)(modification->frame - previous->frame);
253 return interpolateScalar(previous->value, modification->value, fraction, modification->interpolation);
257 float fraction = (frame - previous->frame) / (float)(modification->frame - previous->frame);
258 fraction = interpolateScalar(0, 1, fraction, modification->interpolation);
259 return calculateSpline(modification, fraction);
263 float fraction = (frame - previous->frame) / (float)(modification->frame - previous->frame);
264 fraction = interpolateScalar(0, 1, fraction, modification->interpolation);
265 return calculateSweep(modification, fraction);
268 return previous->value;
274 filterState_t* filterState_new(U16 frame, int function, FILTERLIST* value, interpolation_t* inter)
276 filterState_t* newChange = (filterState_t*)malloc(sizeof(filterState_t));
277 filterState_init(newChange);
278 newChange->frame = frame;
279 newChange->function = function;
280 newChange->value = value;
281 newChange->interpolation = inter;
285 void filterState_free(filterState_t *change)
288 filterState_free(change->next);
293 void filterState_init(filterState_t* change)
295 memset(change, 0, sizeof(filterState_t));
298 void filterState_append(filterState_t* first, filterState_t* newChange)
302 if (!first->value || !newChange->value)
303 first->next = newChange;
306 int i, mergedCount = 0;
307 int common = first->value->num < newChange->value->num ? first->value->num : newChange->value->num;
308 for (i = 0; i < common; i++)
311 if (newChange->value->filter[i]->type != first->value->filter[i]->type)
314 mergedCount = mergedCount + first->value->num - common + newChange->value->num - common;
320 list1 = (char*)malloc(1);
322 for (i = 0; i < first->value->num; i++)
324 newList = (char*)malloc(strlen(list1) + strlen(filtername[first->value->filter[i]->type]) + 2);
325 newList = strcat(strcat(list1, "+"), filtername[first->value->filter[i]->type]);
329 list2 = (char*)malloc(1);
331 for (i = 0; i < newChange->value->num; i++)
333 newList = (char*)malloc(strlen(list1) + strlen(filtername[newChange->value->filter[i]->type]) + 2);
334 newList = strcat(strcat(list2, "+"), filtername[newChange->value->filter[i]->type]);
338 syntaxerror("filterlists %s and %s cannot be interpolated.", list1, list2);
340 first->next = newChange;
344 RGBA interpolateColor(RGBA c1, RGBA c2, float ratio, interpolation_t* inter)
347 c.r = interpolateScalar(c1.r, c2.r, ratio, inter);
348 c.g = interpolateScalar(c1.g, c2.g, ratio, inter);
349 c.b = interpolateScalar(c1.b, c2.b, ratio, inter);
350 c.a = interpolateScalar(c1.a, c2.a, ratio, inter);
354 GRADIENT* interpolateNodes(GRADIENT* g1, GRADIENT* g2, float fraction, interpolation_t* inter)
356 if (g1->num != g2->num)
357 syntaxerror("Internal error: gradients are not equal in size");
360 GRADIENT* g = (GRADIENT*) malloc(sizeof(GRADIENT));
361 g->ratios = rfx_calloc(16*sizeof(U8));
362 g->rgba = rfx_calloc(16*sizeof(RGBA));
364 for (i = 0; i < g->num; i++)
366 g->ratios[i] = interpolateScalar(g1->ratios[i], g2->ratios[i], fraction, inter);
367 g->rgba[i] = interpolateColor(g1->rgba[i], g2->rgba[i], fraction, inter);
372 void copyGradient(GRADIENT* dest, GRADIENT* source)
374 dest->num = source->num;
375 memcpy(dest->ratios, source->ratios, source->num * sizeof(U8));
376 memcpy(dest->rgba, source->rgba, source->num * sizeof(RGBA));
379 void insertNode(GRADIENT* g, int pos)
381 memmove(&g->ratios[pos + 1], &g->ratios[pos], (g->num - pos) * sizeof(U8));
382 memmove(&g->rgba[pos + 1], &g->rgba[pos], (g->num - pos) * sizeof(RGBA));
385 g->ratios[0] = g->ratios[1] / 2;
386 g->rgba[0] = g->rgba[1];
391 g->ratios[pos] = (255 + g->ratios[g->num - 1]) / 2;
392 g->rgba[pos] = g->rgba[pos - 1];
396 g->ratios[pos] = (g->ratios[pos - 1] + g->ratios[pos + 1]) / 2;
397 g->rgba[pos] = interpolateColor(g->rgba[pos - 1], g->rgba[pos + 1], 0.5, 0);
402 void insertOptimalNode(GRADIENT* g)
406 int gap = g->ratios[0];
407 for (i = 0; i < g->num - 1; i++)
409 next_gap = g->ratios[i + 1] - g->ratios[i];
416 next_gap = 255 - g->ratios[g->num -1];
422 void growGradient(GRADIENT* start, int size)
424 while (start->num < size)
425 insertOptimalNode(start);
428 GRADIENT* interpolateGradient(GRADIENT* g1, GRADIENT* g2, float fraction, interpolation_t* inter)
432 g.ratios = rfx_calloc(16*sizeof(U8));
433 g.rgba = rfx_calloc(16*sizeof(RGBA));
435 if (g1->num > g2->num)
437 copyGradient(&g, g2);
438 growGradient(&g, g1->num);
439 GRADIENT* result = interpolateNodes(g1, &g, fraction, inter);
445 if (g1->num < g2->num)
447 copyGradient(&g, g1);
448 growGradient(&g, g2->num);
449 GRADIENT* result = interpolateNodes(&g, g2, fraction, inter);
455 return interpolateNodes(g1, g2, fraction, inter);
458 FILTER* copyFilter(FILTER* original)
462 FILTER* copy = swf_NewFilter(original->type);
463 switch (original->type)
465 case FILTERTYPE_BLUR:
466 memcpy(copy, original, sizeof(FILTER_BLUR));
468 case FILTERTYPE_GRADIENTGLOW:
470 memcpy(copy, original, sizeof(FILTER_GRADIENTGLOW));
471 FILTER_GRADIENTGLOW* ggcopy = (FILTER_GRADIENTGLOW*)copy;
472 ggcopy->gradient = (GRADIENT*)malloc(sizeof(GRADIENT));
473 ggcopy->gradient->ratios = (U8*)malloc(16 * sizeof(U8));
474 ggcopy->gradient->rgba = (RGBA*)malloc(16 * sizeof(RGBA));
475 copyGradient(ggcopy->gradient, ((FILTER_GRADIENTGLOW*)original)->gradient);
478 case FILTERTYPE_DROPSHADOW:
479 memcpy(copy, original, sizeof(FILTER_DROPSHADOW));
481 case FILTERTYPE_BEVEL:
482 memcpy(copy, original, sizeof(FILTER_BEVEL));
484 default: syntaxerror("Internal error: unsupported filterype, cannot copy");
489 FILTER* interpolateBlur(FILTER* filter1, FILTER* filter2, float ratio, interpolation_t* inter)
491 FILTER_BLUR*f1 = (FILTER_BLUR*)filter1;
492 FILTER_BLUR*f2 = (FILTER_BLUR*)filter2;
497 if(f1->blurx == f2->blurx && f1->blury == f2->blury)
498 return copyFilter(filter1);
499 FILTER_BLUR*f = (FILTER_BLUR*)swf_NewFilter(FILTERTYPE_BLUR);
500 f->blurx= interpolateScalar(f1->blurx, (f2->blurx), ratio, inter);
501 f->blury= interpolateScalar(f1->blury, (f2->blury), ratio, inter);
502 f->passes= interpolateScalar(f1->passes, (f2->passes), ratio, inter);
506 void matchDropshadowFlags(FILTER_DROPSHADOW* unset, FILTER_DROPSHADOW* target)
508 unset->innershadow = target->innershadow;
509 unset->knockout = target->knockout;
510 unset->composite = target->composite;
513 FILTER* interpolateDropshadow(FILTER* filter1,FILTER* filter2, float ratio, interpolation_t* inter)
515 FILTER_DROPSHADOW*f1 = (FILTER_DROPSHADOW*)filter1;
516 FILTER_DROPSHADOW*f2 = (FILTER_DROPSHADOW*)filter2;
521 if(!memcmp(&f1->color,&f2->color,sizeof(RGBA)) && f1->strength == f2->strength &&
522 f1->blurx == f2->blurx && f1->blury == f2->blury &&
523 f1->angle == f2->angle && f1->distance == f2->distance)
524 return copyFilter(filter1);
525 FILTER_DROPSHADOW*f = (FILTER_DROPSHADOW*)swf_NewFilter(FILTERTYPE_DROPSHADOW);
526 memcpy(f, f1, sizeof(FILTER_DROPSHADOW));
527 f->color = interpolateColor(f1->color, f2->color, ratio, inter);
528 f->blurx= interpolateScalar(f1->blurx, (f2->blurx), ratio, inter);
529 f->blury= interpolateScalar(f1->blury, (f2->blury), ratio, inter);
530 f->passes= interpolateScalar(f1->passes, (f2->passes), ratio, inter);
531 f->angle= interpolateScalar(f1->angle, (f2->angle), ratio, inter);
532 f->distance= interpolateScalar(f1->distance, (f2->distance), ratio, inter);
533 f->strength= interpolateScalar(f1->strength, (f2->strength), ratio, inter);
534 if (f1 == noDropshadow)
536 if (f2 != noDropshadow)
537 matchDropshadowFlags(f, f2);
540 if (f2 == noDropshadow)
541 matchDropshadowFlags(f, f1);
544 matchDropshadowFlags(f, f2);
546 matchDropshadowFlags(f, f1);
550 void matchBevelFlags(FILTER_BEVEL* unset, FILTER_BEVEL* target)
552 unset->innershadow = target->innershadow;
553 unset->knockout = target->knockout;
554 unset->composite = target->composite;
555 unset->ontop = target->ontop;
558 FILTER* interpolateBevel(FILTER* filter1,FILTER* filter2, float ratio, interpolation_t* inter)
560 FILTER_BEVEL*f1 = (FILTER_BEVEL*)filter1;
561 FILTER_BEVEL*f2 = (FILTER_BEVEL*)filter2;
566 if(!memcmp(&f1->shadow,&f2->shadow,sizeof(RGBA)) &&
567 !memcmp(&f1->highlight,&f2->highlight,sizeof(RGBA)) &&
568 f1->blurx == f2->blurx && f1->blury == f2->blury && f1->angle == f2->angle && f1->strength == f2->strength && f1->distance == f2->distance)
569 return copyFilter(filter1);
570 FILTER_BEVEL*f = (FILTER_BEVEL*)swf_NewFilter(FILTERTYPE_BEVEL);
571 memcpy(f, f1, sizeof(FILTER_BEVEL));
572 f->shadow = interpolateColor(f1->shadow, f2->shadow, ratio, inter);
573 f->highlight = interpolateColor(f1->highlight, f2->highlight, ratio, inter);
574 f->blurx= interpolateScalar(f1->blurx, (f2->blurx), ratio, inter);
575 f->blury= interpolateScalar(f1->blury, (f2->blury), ratio, inter);
576 f->passes= interpolateScalar(f1->passes, (f2->passes), ratio, inter);
577 f->angle= interpolateScalar(f1->angle, (f2->angle), ratio, inter);
578 f->distance= interpolateScalar(f1->distance, (f2->distance), ratio, inter);
579 f->strength= interpolateScalar(f1->strength, (f2->strength), ratio, inter);
583 matchBevelFlags(f, f2);
587 matchBevelFlags(f, f1);
590 matchBevelFlags(f, f2);
592 matchBevelFlags(f, f1);
596 void matchGradientGlowFlags(FILTER_GRADIENTGLOW* unset, FILTER_GRADIENTGLOW* target)
598 unset->innershadow = target->innershadow;
599 unset->knockout = target->knockout;
600 unset->composite = target->composite;
601 unset->ontop = target->ontop;
604 FILTER* interpolateGradientGlow(FILTER* filter1,FILTER* filter2, float ratio, interpolation_t* inter)
606 FILTER_GRADIENTGLOW*f1 = (FILTER_GRADIENTGLOW*)filter1;
607 FILTER_GRADIENTGLOW*f2 = (FILTER_GRADIENTGLOW*)filter2;
612 if(f1->gradient->num == f2->gradient->num &&
613 !memcmp(&f1->gradient->ratios,&f2->gradient->ratios,f1->gradient->num * sizeof(U8)) &&
614 !memcmp(&f1->gradient->rgba,&f2->gradient->rgba,f1->gradient->num * sizeof(RGBA)) &&
615 f1->blurx == f2->blurx && f1->blury == f2->blury && f1->angle == f2->angle && f1->strength == f2->strength && f1->distance == f2->distance)
616 return copyFilter(filter1);
617 FILTER_GRADIENTGLOW*f = (FILTER_GRADIENTGLOW*)swf_NewFilter(FILTERTYPE_GRADIENTGLOW);
618 memcpy(f, f1, sizeof(FILTER_GRADIENTGLOW));
619 f->blurx= interpolateScalar(f1->blurx, (f2->blurx), ratio, inter);
620 f->blury= interpolateScalar(f1->blury, (f2->blury), ratio, inter);
621 f->passes= interpolateScalar(f1->passes, (f2->passes), ratio, inter);
622 f->angle= interpolateScalar(f1->angle, (f2->angle), ratio, inter);
623 f->distance= interpolateScalar(f1->distance, (f2->distance), ratio, inter);
624 f->strength= interpolateScalar(f1->strength, (f2->strength), ratio, inter);
625 f->gradient= interpolateGradient(f1->gradient, f2->gradient, ratio, inter);
626 if (f1 == noGradientGlow)
628 if (f2 != noGradientGlow)
629 matchGradientGlowFlags(f, f2);
632 if (f2 == noGradientGlow)
633 matchGradientGlowFlags(f, f1);
636 matchGradientGlowFlags(f, f2);
638 matchGradientGlowFlags(f, f1);
642 FILTER* interpolateFilter(FILTER* filter1,FILTER* filter2, float ratio, interpolation_t* inter)
644 if(!filter1 && !filter2)
649 filter_type = filter2->type;
652 filter_type = filter1->type;
654 if(filter2->type != filter1->type)
655 syntaxerror("can't interpolate between %s and %s filters yet", filtername[filter1->type], filtername[filter2->type]);
657 filter_type = filter1->type;
661 case FILTERTYPE_BLUR:
662 return interpolateBlur(filter1, filter2, ratio, inter);
663 case FILTERTYPE_BEVEL:
664 return interpolateBevel(filter1, filter2, ratio, inter);
665 case FILTERTYPE_DROPSHADOW:
666 return interpolateDropshadow(filter1, filter2, ratio, inter);
667 case FILTERTYPE_GRADIENTGLOW:
668 return interpolateGradientGlow(filter1, filter2, ratio, inter);
670 syntaxerror("Filtertype %s not supported yet.\n", filtername[filter1->type]);
675 FILTERLIST* copyFilterList(FILTERLIST* original)
680 FILTERLIST* copy = (FILTERLIST*)malloc(sizeof(FILTERLIST));
681 copy->num = original->num;
682 for (i = 0; i < copy->num; i++)
683 copy->filter[i] = copyFilter(original->filter[i]);
687 FILTER* noFilter(int type)
691 case FILTERTYPE_BLUR:
692 return (FILTER*)noBlur;
694 case FILTERTYPE_BEVEL:
695 return (FILTER*)noBevel;
697 case FILTERTYPE_DROPSHADOW:
698 return (FILTER*)noDropshadow;
700 case FILTERTYPE_GRADIENTGLOW:
701 return (FILTER*)noGradientGlow;
704 syntaxerror("Internal error: unsupported filtertype, cannot match filterlists");
709 FILTERLIST* interpolateFilterList(FILTERLIST* list1, FILTERLIST* list2, float ratio, interpolation_t* inter)
711 if (!list1 && !list2)
713 FILTERLIST start, target, dummy;
720 int common = list1->num < list2->num ? list1->num : list2->num;
721 for (i = 0; i < common; i++)
723 start.filter[j] = list1->filter[i];
724 if (list2->filter[i]->type == list1->filter[i]->type)
726 target.filter[j] = list2->filter[i];
731 target.filter[j] = noFilter(list1->filter[i]->type);
733 start.filter[j] = noFilter(list2->filter[i]->type);
734 target.filter[j] = list2->filter[i];
738 if (list1->num > common)
739 for (i = common; i < list1->num; i++)
741 start.filter[j] = list1->filter[i];
742 target.filter[j] = noFilter(list1->filter[i]->type);
745 if (list2->num > common)
746 for (i = common; i < list2->num; i++)
748 start.filter[j] = noFilter(list2->filter[i]->type);
749 target.filter[j] = list2->filter[i];
754 FILTERLIST* mixedList = (FILTERLIST*)malloc(sizeof(FILTERLIST));
756 for (i = 0; i < j; i++)
757 mixedList->filter[i] = interpolateFilter(start.filter[i], target.filter[i], ratio, inter);
761 int filterState_differs(filterState_t* modification, U16 frame)
763 filterState_t* previous = modification;
764 while (modification && modification->frame < frame)
766 previous = modification;
767 modification = modification->next;
771 if (modification->frame == frame)
773 return (modification->function != CF_JUMP);
776 FILTERLIST* filterState_value(filterState_t* modification, U16 frame)
778 filterState_t* previous = modification;
779 while (modification && modification->frame < frame)
781 previous = modification;
782 modification = modification->next;
785 return copyFilterList(previous->value);
786 if (modification->frame == frame)
790 previous = modification;
791 modification = modification->next;
793 while (modification && modification->frame == frame);
794 return copyFilterList(previous->value);
796 switch (modification->function)
799 return copyFilterList(modification->value);
802 float fraction = (frame - previous->frame) / (float)(modification->frame - previous->frame);
803 return interpolateFilterList(previous->value, modification->value, fraction, modification->interpolation);
806 return copyFilterList(previous->value);
812 history_t* history_new()
814 history_t* newHistory = (history_t*)malloc(sizeof(history_t));
815 history_init(newHistory);
819 void history_free(history_t* past)
821 state_free(dictionary_lookup(past->states, "x"));
822 state_free(dictionary_lookup(past->states, "y"));
823 state_free(dictionary_lookup(past->states, "scalex"));
824 state_free(dictionary_lookup(past->states, "scaley"));
825 state_free(dictionary_lookup(past->states, "cxform.r0"));
826 state_free(dictionary_lookup(past->states, "cxform.g0"));
827 state_free(dictionary_lookup(past->states, "cxform.b0"));
828 state_free(dictionary_lookup(past->states, "cxform.a0"));
829 state_free(dictionary_lookup(past->states, "cxform.r1"));
830 state_free(dictionary_lookup(past->states, "cxform.g1"));
831 state_free(dictionary_lookup(past->states, "cxform.b1"));
832 state_free(dictionary_lookup(past->states, "cxform.a1"));
833 state_free(dictionary_lookup(past->states, "rotate"));
834 state_free(dictionary_lookup(past->states, "shear"));
835 state_free(dictionary_lookup(past->states, "pivot.x"));
836 state_free(dictionary_lookup(past->states, "pivot.y"));
837 state_free(dictionary_lookup(past->states, "pin.x"));
838 state_free(dictionary_lookup(past->states, "pin.y"));
839 state_free(dictionary_lookup(past->states, "blendmode"));
840 state_free(dictionary_lookup(past->states, "flags"));
841 filterState_free(dictionary_lookup(past->states, "filter"));
842 dictionary_destroy(past->states);
846 void history_init(history_t* past)
848 past->states = (dictionary_t*)malloc(sizeof(dictionary_t));
849 dictionary_init(past->states);
852 void history_begin(history_t* past, char* parameter, U16 frame, TAG* tag, float value)
854 state_t* first = state_new(frame, CF_PUT, value, 0);
855 past->firstTag = tag;
856 past->firstFrame = frame;
857 dictionary_put2(past->states, parameter, first);
860 void history_beginFilter(history_t* past, U16 frame, TAG* tag, FILTERLIST* value)
862 filterState_t* first = filterState_new(frame, CF_PUT, value, 0);
863 past->firstTag = tag;
864 past->firstFrame = frame;
865 dictionary_put2(past->states, "filter", first);
868 void history_remember(history_t* past, char* parameter, U16 frame, int function, float value, interpolation_t* inter)
870 past->lastFrame = frame;
871 state_t* state = dictionary_lookup(past->states, parameter);
872 if (state) //should always be true
874 state_t* next = state_new(frame, function, value, inter);
875 state_append(state, next);
878 syntaxerror("Internal error: changing parameter %s, which is unknown for the instance.", parameter);
881 static float getAngle(float dX, float dY)
883 float radius = sqrt(dX * dX + dY * dY);
888 return acos(dX / radius);
890 return 2 * M_PI - acos(dX / radius);
893 return M_PI - acos(-dX / radius);
895 return M_PI + acos(-dX / radius);
898 static float getDeltaAngle(float angle1, float angle2, int clockwise)
903 return angle2 - angle1;
905 return angle2 - angle1 - 2 * M_PI;
910 return 2 * M_PI - angle1 + angle2;
912 return angle2 - angle1;
916 void history_rememberSweep(history_t* past, U16 frame, float x, float y, float r, int clockwise, int short_arc, interpolation_t* inter)
918 float lastX, lastY, dX, dY;
921 past->lastFrame = frame;
922 state_t* change = dictionary_lookup(past->states, "x");
923 if (change) //should always be true
926 change = change->next;
927 lastFrame = change->frame;
928 lastX = change->value;
929 change = dictionary_lookup(past->states, "y");
930 if (change) //should always be true
933 change = change->next;
934 lastY = change->value;
937 if (dX == 0 && dY == 0)
938 syntaxerror("sweep not possible: startpoint and endpoint must not be equal");
939 if ((dX) * (dX) + (dY) * (dY) > 4 * r * r)
940 syntaxerror("sweep not possible: radius is to small");
941 if (change->frame > lastFrame)
943 lastFrame = change->frame;
944 history_remember(past, "x", lastFrame, CF_JUMP, lastX, 0);
947 if (change->frame < lastFrame)
948 history_remember(past, "y", lastFrame, CF_JUMP, lastY, 0);
949 float c1X, c1Y, c2X, c2Y;
950 if (dX == 0) //vertical
952 c1Y = c2Y = (lastY + y) / 2;
953 c1X = x + sqrt(r * r - (c1Y - y) * (c1Y - y));
957 if (dY == 0) //horizontal
959 c1X = c2X = (lastX + x) / 2;
960 c1Y = y +sqrt(r * r - (c1X - x) * (c1X - x));
965 c1X = sqrt((r * r - (dX * dX + dY * dY) / 4) / (1 + dX * dX / dY / dY));
967 c1Y = -dX / dY * c1X;
969 c1X += (x + lastX) / 2;
970 c2X += (x + lastX) / 2;
971 c1Y += (y + lastY) / 2;
972 c2Y += (y + lastY) / 2;
974 float angle1, angle2, delta_angle, centerX, centerY;
975 angle1 = getAngle(lastX - c1X, lastY - c1Y);
976 angle2 = getAngle(x - c1X, y - c1Y);
977 delta_angle = getDeltaAngle(angle1, angle2, clockwise);
978 if ((short_arc && fabs(delta_angle) <= M_PI) || (! short_arc && fabs(delta_angle) >= M_PI))
985 angle1 = getAngle(lastX - c2X, lastY - c2Y);
986 angle2 = getAngle(x - c2X, y - c2Y);
987 delta_angle = getDeltaAngle(angle1, angle2, clockwise);
991 change = dictionary_lookup(past->states, "x");
992 state_t* nextX = state_new(frame, CF_SWEEP, x, inter);
994 nextX->arc.angle = angle1;
995 nextX->arc.delta_angle = delta_angle;
996 nextX->arc.cX = centerX;
997 nextX->arc.cY = centerY;
999 state_append(change, nextX);
1000 change = dictionary_lookup(past->states, "y");
1001 state_t* nextY = state_new(frame, CF_SWEEP, y, inter);
1003 nextY->arc.angle = angle1;
1004 nextY->arc.delta_angle = delta_angle;
1005 nextY->arc.cX = centerX;
1006 nextY->arc.cY = centerY;
1008 state_append(change, nextY);
1011 syntaxerror("Internal error: changing parameter y in sweep, which is unknown for the instance.");
1014 syntaxerror("Internal error: changing parameter x in sweep, which is unknown for the instance.");
1017 void history_rememberFilter(history_t* past, U16 frame, int function, FILTERLIST* value, interpolation_t* inter)
1019 past->lastFrame = frame;
1020 filterState_t* first = dictionary_lookup(past->states, "filter");
1021 if (first) //should always be true
1023 filterState_t* next = filterState_new(frame, function, value, inter);
1024 filterState_append(first, next);
1027 syntaxerror("Internal error: changing a filter not set for the instance.");
1030 void history_processFlags(history_t* past)
1031 // to be called after completely recording this history, before calculating any values.
1033 state_t* flagState = dictionary_lookup(past->states, "flags");
1035 U16 nextFlags, toggledFlags, currentFlags = (U16)flagState->value;
1036 while (flagState->next)
1038 nextState = flagState->next;
1039 nextFlags = (U16)nextState->value;
1040 toggledFlags = currentFlags ^ nextFlags;
1041 if (toggledFlags & IF_FIXED_ALIGNMENT)
1042 { // the IF_FIXED_ALIGNMENT bit will change in the next state
1043 if (nextFlags & IF_FIXED_ALIGNMENT)
1044 { // the IF_FIXED_ALIGNMENT bit will be set
1045 int onFrame = nextState->frame;
1046 state_t* rotations = dictionary_lookup(past->states, "rotate");
1047 nextState->params.instanceAngle = state_value(rotations, onFrame);
1048 state_t* resetRotate = state_new(onFrame, CF_JUMP, 0, 0);
1049 state_insert(rotations, resetRotate);
1050 if (onFrame == past->firstFrame)
1056 x = dictionary_lookup(past->states, "x");
1057 dx = state_tangent(x, onFrame, T_SYMMETRIC);
1058 y = dictionary_lookup(past->states, "y");
1059 dy = state_tangent(y, onFrame, T_SYMMETRIC);
1062 while (dx == 0 && dy == 0 && onFrame < past->lastFrame);
1063 if (onFrame == past->lastFrame)
1064 nextState->params.pathAngle = 0;
1066 nextState->params.pathAngle = getAngle(dx, dy) / M_PI * 180;
1068 else // the IF_FIXED_ALIGNMENT bit will be reset
1070 int offFrame = nextState->frame;
1071 state_t* rotations = dictionary_lookup(past->states, "rotate");
1072 state_t* setRotate = state_new(offFrame, CF_JUMP, flagState->params.instanceAngle + state_value(rotations, offFrame), 0);
1073 state_insert(rotations, setRotate);
1076 else // the IF_FIXED_ALIGNMENT bit will not change but some processing may be
1077 // required just the same
1079 if (nextFlags & IF_FIXED_ALIGNMENT)
1081 nextState->params.instanceAngle = flagState->params.instanceAngle;
1082 nextState->params.pathAngle = flagState->params.pathAngle;
1085 // and so on for all the other bits.
1086 flagState = nextState;
1087 currentFlags = nextFlags;
1091 int history_change(history_t* past, U16 frame, char* parameter)
1093 state_t* first = dictionary_lookup(past->states, parameter);
1094 if (first) //should always be true.
1095 return state_differs(first, frame);
1096 syntaxerror("no history found to predict changes for parameter %s.\n", parameter);
1100 float history_value(history_t* past, U16 frame, char* parameter)
1102 state_t* state = dictionary_lookup(past->states, parameter);
1103 if (state) //should always be true.
1104 return state_value(state, frame);
1105 syntaxerror("no history found to get a value for parameter %s.\n", parameter);
1109 float history_rotateValue(history_t* past, U16 frame)
1111 state_t* rotations = dictionary_lookup(past->states, "rotate");
1112 if (rotations) //should always be true.
1114 float angle = state_value(rotations, frame);
1115 state_t* flags = dictionary_lookup(past->states, "flags");
1116 U16 currentflags = state_value(flags, frame);
1117 if (currentflags & IF_FIXED_ALIGNMENT)
1119 flags = state_at(flags, frame);
1120 if (frame == past->firstFrame)
1123 float dx, dy, pathAngle;
1126 x = dictionary_lookup(past->states, "x");
1127 dx = state_value(x, frame) - state_value(x, frame - 1);
1128 y = dictionary_lookup(past->states, "y");
1129 dy = state_value(y, frame) - state_value(y, frame - 1);
1132 while (dx == 0 && dy == 0 && frame > past->firstFrame);
1133 if (frame == past->firstFrame)
1136 pathAngle = getAngle(dx, dy) / M_PI * 180;
1137 return angle + flags->params.instanceAngle + pathAngle - flags->params.pathAngle;
1142 syntaxerror("no history found to get a value for parameter rotate.\n");
1146 int history_changeFilter(history_t* past, U16 frame)
1148 filterState_t* first = dictionary_lookup(past->states, "filter");
1149 if (first) //should always be true.
1150 return filterState_differs(first, frame);
1151 syntaxerror("no history found to predict changes for parameter filter.\n");
1155 FILTERLIST* history_filterValue(history_t* past, U16 frame)
1157 filterState_t* first = dictionary_lookup(past->states, "filter");
1158 if (first) //should always be true.
1159 return filterState_value(first, frame);
1160 syntaxerror("no history found to get a value for parameter filter.\n");