#include <memory.h>
#include "swfc-history.h"
-change_t* change_new(U16 frame, int function, float value, interpolation_t* inter)
+enum
{
- change_t* newChange = (change_t*)malloc(sizeof(change_t));
- change_init(newChange);
- newChange->frame = frame;
- newChange->function = function;
- newChange->value = value;
- newChange->interpolation = inter;
- return newChange;
+ T_BEFORE = 0,
+ T_AFTER = 1,
+ T_SYMMETRIC = 2
+};
+
+state_t* state_new(U16 frame, int function, float value, interpolation_t* inter)
+{
+ state_t* newState = (state_t*)malloc(sizeof(state_t));
+ state_init(newState);
+ newState->frame = frame;
+ newState->function = function;
+ newState->value = value;
+ newState->interpolation = inter;
+ return newState;
}
-void change_free(change_t *change)
+void state_free(state_t* state)
{
- if (change->next)
- change_free(change->next);
- free(change);
+ if (state->next)
+ state_free(state->next);
+ free(state);
+}
+
+void state_init(state_t* state)
+{
+ memset(state, 0, sizeof(state_t));
}
-void change_init(change_t* change)
+state_t* state_at(state_t* state, U16 frame)
{
- memset(change, 0, sizeof(change_t));
+ while (state->next && state->next->frame < frame)
+ state = state->next;
+ return state;
}
-void change_append(change_t* first, change_t* newChange)
+void state_append(state_t* state, state_t* newState)
{
- change_t* previous = 0;
- change_t* start = first;
+ state_t* previous = 0;
+ state_t* start = state;
float p0, p1, m0, m1;
- while (first->next)
+ while (state->next)
{
- previous = first;
- first = first->next;
+ previous = state;
+ state = state->next;
}
- first->next = newChange;
- if (first->function == CF_QCHANGE)
+ state->next = newState;
+ if (state->function == CF_SCHANGE)
{
p0 = previous->value;
- p1 = first->value;
- if (previous->function == CF_QCHANGE)
+ p1 = state->value;
+ if (previous->function == CF_SCHANGE)
m0 = (3 * previous->spline.a + 2 * previous->spline.b + previous->spline.c);
else
- if (previous->function == CF_CHANGE)
- m0 = (change_value(start, previous->frame) - change_value(start, previous->frame - 1)) * (first->frame - previous->frame);
+ if (previous->function == CF_CHANGE || previous->function == CF_SWEEP)
+ m0 = state_tangent(start, previous->frame, T_BEFORE) * (state->frame - previous->frame);
else
- m0 = (first->value - previous->value);
- if (newChange->function == CF_QCHANGE)
- m1 = 0.5 * (newChange->value - previous->value);
+ m0 = (state->value - previous->value);
+ if (newState->function == CF_SCHANGE)
+ m1 = 0.5 * (newState->value - previous->value)/* * (state->frame - previous->frame) / (newState->frame - state->frame)*/;
else
- if (newChange->function == CF_CHANGE)
- m1 = (change_value(previous, first->frame + 1) - change_value(previous, first->frame)) * (first->frame - previous->frame);
+ if (newState->function == CF_CHANGE || newState->function == CF_SWEEP)
+ m1 = state_tangent(previous, state->frame, T_AFTER) * (state->frame - previous->frame);
else
- m1 = (first->value - previous->value);
- first->spline.a = 2 * p0 + m0 - 2 * p1 + m1;
- first->spline.b = -3 * p0 - 2 * m0 + 3 * p1 - m1;
- first->spline.c = m0;
- first->spline.d = p0;
+ m1 = (newState->value - state->value);
+ state->spline.a = 2 * p0 + m0 - 2 * p1 + m1;
+ state->spline.b = -3 * p0 - 2 * m0 + 3 * p1 - m1;
+ state->spline.c = m0;
+ state->spline.d = p0;
+// printf("p0: %f, p1: %f, m0: %f, m1: %f.\n", p0, p1, m0, m1);
+// printf("a: %f, b: %f, c: %f, d: %f.\n", state->spline.a, state->spline.b, state->spline.c, state->spline.d);
}
- if (newChange->function == CF_QCHANGE)
+ if (newState->function == CF_SCHANGE)
{
- p0 = first->value;
- p1 = newChange->value;
- if (first->function == CF_QCHANGE)
+ p0 = state->value;
+ p1 = newState->value;
+ if (state->function == CF_SCHANGE)
m0 = m1;
else
- if (first->function == CF_CHANGE)
- m0 = (change_value(start, first->frame) - change_value(start, first->frame - 1)) * (first->frame - previous->frame);
+ if (state->function == CF_CHANGE || state->function == CF_SWEEP)
+ m0 = state_tangent(start, state->frame, T_BEFORE) * (state->frame - previous->frame);
else
- m0 = (newChange->value - first->value);
- m1 = (newChange->value - first->value);
- newChange->spline.a = 2 * p0 + m0 - 2 * p1 + m1;
- newChange->spline.b = -3 * p0 - 2 * m0 + 3 * p1 - m1;
- newChange->spline.c = m0;
- newChange->spline.d = p0;
+ m0 = (newState->value - state->value);
+ m1 = (newState->value - state->value);
+ newState->spline.a = 2 * p0 + m0 - 2 * p1 + m1;
+ newState->spline.b = -3 * p0 - 2 * m0 + 3 * p1 - m1;
+ newState->spline.c = m0;
+ newState->spline.d = p0;
}
+ }
+
+void state_insert(state_t* state, state_t* newState)
+{
+ while (state->next && state->next->frame < newState->frame)
+ state = state->next;
+ newState->next = state->next;
+ state->next = newState;
+ // if this is going to be used to insert CF_SCHANGE states it will have to be extended
+ // as in state_append above. I know this is not necessary right now, so I'll be lazy.
}
-float calculateSpline(change_t* modification, float fraction)
+float calculateSpline(state_t* modification, float fraction)
{
spline_t s = modification->spline;
return (((s.a * fraction) + s.b) * fraction + s.c) * fraction + s.d;
switch (inter->function)
{
case IF_LINEAR: return linear(fraction, p1, p2 - p1);
- case IF_QUAD_IN: return quadIn(fraction, p1, p2 - p1);
- case IF_QUAD_OUT: return quadOut(fraction, p1, p2 - p1);
- case IF_QUAD_IN_OUT: return quadInOut(fraction, p1, p2 - p1);
- case IF_CUBIC_IN: return cubicIn(fraction, p1, p2 - p1);
- case IF_CUBIC_OUT: return cubicOut(fraction, p1, p2 - p1);
- case IF_CUBIC_IN_OUT: return cubicInOut(fraction, p1, p2 - p1);
- case IF_QUART_IN: return quartIn(fraction, p1, p2 - p1);
- case IF_QUART_OUT: return quartOut(fraction, p1, p2 - p1);
- case IF_QUART_IN_OUT: return quartInOut(fraction, p1, p2 - p1);
- case IF_QUINT_IN: return quintIn(fraction, p1, p2 - p1);
- case IF_QUINT_OUT: return quintOut(fraction, p1, p2 - p1);
- case IF_QUINT_IN_OUT: return quintInOut(fraction, p1, p2 - p1);
- case IF_CIRCLE_IN: return circleIn(fraction, p1, p2 - p1);
- case IF_CIRCLE_OUT: return circleOut(fraction, p1, p2 - p1);
- case IF_CIRCLE_IN_OUT: return circleInOut(fraction, p1, p2 - p1);
+ case IF_QUAD_IN: return quadIn(fraction, p1, p2 - p1, inter->slope);
+ case IF_QUAD_OUT: return quadOut(fraction, p1, p2 - p1, inter->slope);
+ case IF_QUAD_IN_OUT: return quadInOut(fraction, p1, p2 - p1, inter->slope);
+ case IF_CUBIC_IN: return cubicIn(fraction, p1, p2 - p1, inter->slope);
+ case IF_CUBIC_OUT: return cubicOut(fraction, p1, p2 - p1, inter->slope);
+ case IF_CUBIC_IN_OUT: return cubicInOut(fraction, p1, p2 - p1, inter->slope);
+ case IF_QUART_IN: return quartIn(fraction, p1, p2 - p1, inter->slope);
+ case IF_QUART_OUT: return quartOut(fraction, p1, p2 - p1, inter->slope);
+ case IF_QUART_IN_OUT: return quartInOut(fraction, p1, p2 - p1, inter->slope);
+ case IF_QUINT_IN: return quintIn(fraction, p1, p2 - p1, inter->slope);
+ case IF_QUINT_OUT: return quintOut(fraction, p1, p2 - p1, inter->slope);
+ case IF_QUINT_IN_OUT: return quintInOut(fraction, p1, p2 - p1, inter->slope);
+ case IF_CIRCLE_IN: return circleIn(fraction, p1, p2 - p1, inter->slope);
+ case IF_CIRCLE_OUT: return circleOut(fraction, p1, p2 - p1, inter->slope);
+ case IF_CIRCLE_IN_OUT: return circleInOut(fraction, p1, p2 - p1, inter->slope);
case IF_EXPONENTIAL_IN: return exponentialIn(fraction, p1, p2 - p1);
case IF_EXPONENTIAL_OUT: return exponentialOut(fraction, p1, p2 - p1);
case IF_EXPONENTIAL_IN_OUT: return exponentialInOut(fraction, p1, p2 - p1);
}
}
-int change_differs(change_t* modification, U16 frame)
+float calculateSweep(state_t* modification, float fraction)
{
- change_t* previous = modification;
+ arc_t* a = &(modification->arc);
+ float angle = a->angle + fraction * a->delta_angle;
+ if (a->X)
+ return a->cX + a->r * cos(angle);
+ else
+ return a->cY + a->r * sin(angle);
+
+}
+
+int state_differs(state_t* modification, U16 frame)
+{
+ state_t* previous = modification;
while (modification && modification->frame < frame)
{
previous = modification;
return (modification->function != CF_JUMP);
}
-float change_value(change_t* modification, U16 frame)
+float state_tangent(state_t* modification, U16 frame, int tangent)
+{
+ float deltaFrame = 0.1;
+ switch (tangent)
{
- change_t* previous = modification;
+ case T_BEFORE:
+ return (state_value(modification, frame) - state_value(modification, frame - deltaFrame)) / deltaFrame;
+ case T_AFTER:
+ return (state_value(modification, frame + deltaFrame) - state_value(modification, frame)) / deltaFrame;
+ default:
+ return (state_value(modification, frame + deltaFrame) - state_value(modification, frame - deltaFrame)) / (2 * deltaFrame);
+ }
+}
+
+float state_value(state_t* modification, float frame)
+{
+ state_t* previous = modification;
while (modification && modification->frame < frame)
{
previous = modification;
float fraction = (frame - previous->frame) / (float)(modification->frame - previous->frame);
return interpolateScalar(previous->value, modification->value, fraction, modification->interpolation);
}
- case CF_QCHANGE:
+ case CF_SCHANGE:
{
float fraction = (frame - previous->frame) / (float)(modification->frame - previous->frame);
+ fraction = interpolateScalar(0, 1, fraction, modification->interpolation);
return calculateSpline(modification, fraction);
}
+ case CF_SWEEP:
+ {
+ float fraction = (frame - previous->frame) / (float)(modification->frame - previous->frame);
+ fraction = interpolateScalar(0, 1, fraction, modification->interpolation);
+ return calculateSweep(modification, fraction);
+ }
case CF_JUMP:
return previous->value;
default:
}
}
-changeFilter_t* changeFilter_new(U16 frame, int function, FILTERLIST* value, interpolation_t* inter)
+filterState_t* filterState_new(U16 frame, int function, FILTERLIST* value, interpolation_t* inter)
{
- changeFilter_t* newChange = (changeFilter_t*)malloc(sizeof(changeFilter_t));
- changeFilter_init(newChange);
+ filterState_t* newChange = (filterState_t*)malloc(sizeof(filterState_t));
+ filterState_init(newChange);
newChange->frame = frame;
newChange->function = function;
newChange->value = value;
return newChange;
}
-void changeFilter_free(changeFilter_t *change)
+void filterState_free(filterState_t *change)
{
if (change->next)
- changeFilter_free(change->next);
+ filterState_free(change->next);
free(change->value);
free(change);
}
-void changeFilter_init(changeFilter_t* change)
+void filterState_init(filterState_t* change)
{
- memset(change, 0, sizeof(changeFilter_t));
+ memset(change, 0, sizeof(filterState_t));
}
-void changeFilter_append(changeFilter_t* first, changeFilter_t* newChange)
+void filterState_append(filterState_t* first, filterState_t* newChange)
{
while (first->next)
first = first->next;
return mixedList;
}
-int changeFilter_differs(changeFilter_t* modification, U16 frame)
+int filterState_differs(filterState_t* modification, U16 frame)
{
- changeFilter_t* previous = modification;
+ filterState_t* previous = modification;
while (modification && modification->frame < frame)
{
previous = modification;
return (modification->function != CF_JUMP);
}
-FILTERLIST* changeFilter_value(changeFilter_t* modification, U16 frame)
+FILTERLIST* filterState_value(filterState_t* modification, U16 frame)
{
- changeFilter_t* previous = modification;
+ filterState_t* previous = modification;
while (modification && modification->frame < frame)
{
previous = modification;
void history_free(history_t* past)
{
- change_free(dictionary_lookup(past->changes, "x"));
- change_free(dictionary_lookup(past->changes, "y"));
- change_free(dictionary_lookup(past->changes, "scalex"));
- change_free(dictionary_lookup(past->changes, "scaley"));
- change_free(dictionary_lookup(past->changes, "cxform.r0"));
- change_free(dictionary_lookup(past->changes, "cxform.g0"));
- change_free(dictionary_lookup(past->changes, "cxform.b0"));
- change_free(dictionary_lookup(past->changes, "cxform.a0"));
- change_free(dictionary_lookup(past->changes, "cxform.r1"));
- change_free(dictionary_lookup(past->changes, "cxform.g1"));
- change_free(dictionary_lookup(past->changes, "cxform.b1"));
- change_free(dictionary_lookup(past->changes, "cxform.a1"));
- change_free(dictionary_lookup(past->changes, "rotate"));
- change_free(dictionary_lookup(past->changes, "shear"));
- change_free(dictionary_lookup(past->changes, "pivot.x"));
- change_free(dictionary_lookup(past->changes, "pivot.y"));
- change_free(dictionary_lookup(past->changes, "pin.x"));
- change_free(dictionary_lookup(past->changes, "pin.y"));
- change_free(dictionary_lookup(past->changes, "blendmode"));
- changeFilter_free(dictionary_lookup(past->changes, "filter"));
- dictionary_destroy(past->changes);
+ state_free(dictionary_lookup(past->states, "x"));
+ state_free(dictionary_lookup(past->states, "y"));
+ state_free(dictionary_lookup(past->states, "scalex"));
+ state_free(dictionary_lookup(past->states, "scaley"));
+ state_free(dictionary_lookup(past->states, "cxform.r0"));
+ state_free(dictionary_lookup(past->states, "cxform.g0"));
+ state_free(dictionary_lookup(past->states, "cxform.b0"));
+ state_free(dictionary_lookup(past->states, "cxform.a0"));
+ state_free(dictionary_lookup(past->states, "cxform.r1"));
+ state_free(dictionary_lookup(past->states, "cxform.g1"));
+ state_free(dictionary_lookup(past->states, "cxform.b1"));
+ state_free(dictionary_lookup(past->states, "cxform.a1"));
+ state_free(dictionary_lookup(past->states, "rotate"));
+ state_free(dictionary_lookup(past->states, "shear"));
+ state_free(dictionary_lookup(past->states, "pivot.x"));
+ state_free(dictionary_lookup(past->states, "pivot.y"));
+ state_free(dictionary_lookup(past->states, "pin.x"));
+ state_free(dictionary_lookup(past->states, "pin.y"));
+ state_free(dictionary_lookup(past->states, "blendmode"));
+ state_free(dictionary_lookup(past->states, "flags"));
+ filterState_free(dictionary_lookup(past->states, "filter"));
+ dictionary_destroy(past->states);
free(past);
}
void history_init(history_t* past)
{
- past->changes = (dictionary_t*)malloc(sizeof(dictionary_t));
- dictionary_init(past->changes);
+ past->states = (dictionary_t*)malloc(sizeof(dictionary_t));
+ dictionary_init(past->states);
}
void history_begin(history_t* past, char* parameter, U16 frame, TAG* tag, float value)
{
- change_t* first = change_new(frame, CF_PUT, value, 0);
+ state_t* first = state_new(frame, CF_PUT, value, 0);
past->firstTag = tag;
past->firstFrame = frame;
- dictionary_put2(past->changes, parameter, first);
+ dictionary_put2(past->states, parameter, first);
}
void history_beginFilter(history_t* past, U16 frame, TAG* tag, FILTERLIST* value)
{
- changeFilter_t* first = changeFilter_new(frame, CF_PUT, value, 0);
+ filterState_t* first = filterState_new(frame, CF_PUT, value, 0);
past->firstTag = tag;
past->firstFrame = frame;
- dictionary_put2(past->changes, "filter", first);
+ dictionary_put2(past->states, "filter", first);
}
void history_remember(history_t* past, char* parameter, U16 frame, int function, float value, interpolation_t* inter)
{
- change_t* first = dictionary_lookup(past->changes, parameter);
- if (first) //should always be true
+ past->lastFrame = frame;
+ state_t* state = dictionary_lookup(past->states, parameter);
+ if (state) //should always be true
+ {
+ state_t* next = state_new(frame, function, value, inter);
+ state_append(state, next);
+ }
+ else
+ syntaxerror("Internal error: changing parameter %s, which is unknown for the instance.", parameter);
+}
+
+static float getAngle(float dX, float dY)
+{
+ float radius = sqrt(dX * dX + dY * dY);
+ if (radius == 0)
+ return 0.0;
+ if (dX >= 0)
+ if (dY > 0)
+ return acos(dX / radius);
+ else
+ return 2 * M_PI - acos(dX / radius);
+ else
+ if (dY > 0)
+ return M_PI - acos(-dX / radius);
+ else
+ return M_PI + acos(-dX / radius);
+}
+
+static float getDeltaAngle(float angle1, float angle2, int clockwise)
{
- change_t* next = change_new(frame, function, value, inter);
- change_append(first, next);
+ if (!clockwise)
+ {
+ if (angle1 > angle2)
+ return angle2 - angle1;
+ else
+ return angle2 - angle1 - 2 * M_PI;
+ }
+ else
+ {
+ if (angle1 > angle2)
+ return 2 * M_PI - angle1 + angle2;
+ else
+ return angle2 - angle1;
}
}
+void history_rememberSweep(history_t* past, U16 frame, float x, float y, float r, int clockwise, int short_arc, interpolation_t* inter)
+{
+ float lastX, lastY, dX, dY;
+ U16 lastFrame;
+
+ past->lastFrame = frame;
+ state_t* change = dictionary_lookup(past->states, "x");
+ if (change) //should always be true
+ {
+ while (change->next)
+ change = change->next;
+ lastFrame = change->frame;
+ lastX = change->value;
+ change = dictionary_lookup(past->states, "y");
+ if (change) //should always be true
+ {
+ while (change->next)
+ change = change->next;
+ lastY = change->value;
+ dX = x - lastX;
+ dY = y - lastY;
+ if (dX == 0 && dY == 0)
+ syntaxerror("sweep not possible: startpoint and endpoint must not be equal");
+ if ((dX) * (dX) + (dY) * (dY) > 4 * r * r)
+ syntaxerror("sweep not possible: radius is to small");
+ if (change->frame > lastFrame)
+ {
+ lastFrame = change->frame;
+ history_remember(past, "x", lastFrame, CF_JUMP, lastX, 0);
+ }
+ else
+ if (change->frame < lastFrame)
+ history_remember(past, "y", lastFrame, CF_JUMP, lastY, 0);
+ float c1X, c1Y, c2X, c2Y;
+ if (dX == 0) //vertical
+ {
+ c1Y = c2Y = (lastY + y) / 2;
+ c1X = x + sqrt(r * r - (c1Y - y) * (c1Y - y));
+ c2X = 2 * x -c1X;
+ }
+ else
+ if (dY == 0) //horizontal
+ {
+ c1X = c2X = (lastX + x) / 2;
+ c1Y = y +sqrt(r * r - (c1X - x) * (c1X - x));
+ c2Y = 2 * y -c1Y;
+ }
+ else
+ {
+ c1X = sqrt((r * r - (dX * dX + dY * dY) / 4) / (1 + dX * dX / dY / dY));
+ c2X = -c1X;
+ c1Y = -dX / dY * c1X;
+ c2Y = -c1Y;
+ c1X += (x + lastX) / 2;
+ c2X += (x + lastX) / 2;
+ c1Y += (y + lastY) / 2;
+ c2Y += (y + lastY) / 2;
+ }
+ float angle1, angle2, delta_angle, centerX, centerY;
+ angle1 = getAngle(lastX - c1X, lastY - c1Y);
+ angle2 = getAngle(x - c1X, y - c1Y);
+ delta_angle = getDeltaAngle(angle1, angle2, clockwise);
+ if ((short_arc && fabs(delta_angle) <= M_PI) || (! short_arc && fabs(delta_angle) >= M_PI))
+ {
+ centerX = c1X;
+ centerY = c1Y;
+ }
+ else
+ {
+ angle1 = getAngle(lastX - c2X, lastY - c2Y);
+ angle2 = getAngle(x - c2X, y - c2Y);
+ delta_angle = getDeltaAngle(angle1, angle2, clockwise);
+ centerX = c2X;
+ centerY = c2Y;
+ }
+ change = dictionary_lookup(past->states, "x");
+ state_t* nextX = state_new(frame, CF_SWEEP, x, inter);
+ nextX->arc.r = r;
+ nextX->arc.angle = angle1;
+ nextX->arc.delta_angle = delta_angle;
+ nextX->arc.cX = centerX;
+ nextX->arc.cY = centerY;
+ nextX->arc.X = 1;
+ state_append(change, nextX);
+ change = dictionary_lookup(past->states, "y");
+ state_t* nextY = state_new(frame, CF_SWEEP, y, inter);
+ nextY->arc.r = r;
+ nextY->arc.angle = angle1;
+ nextY->arc.delta_angle = delta_angle;
+ nextY->arc.cX = centerX;
+ nextY->arc.cY = centerY;
+ nextY->arc.X = 0;
+ state_append(change, nextY);
+ }
+ else
+ syntaxerror("Internal error: changing parameter y in sweep, which is unknown for the instance.");
+ }
+ else
+ syntaxerror("Internal error: changing parameter x in sweep, which is unknown for the instance.");
+}
+
void history_rememberFilter(history_t* past, U16 frame, int function, FILTERLIST* value, interpolation_t* inter)
{
- changeFilter_t* first = dictionary_lookup(past->changes, "filter");
+ past->lastFrame = frame;
+ filterState_t* first = dictionary_lookup(past->states, "filter");
if (first) //should always be true
{
- changeFilter_t* next = changeFilter_new(frame, function, value, inter);
- changeFilter_append(first, next);
+ filterState_t* next = filterState_new(frame, function, value, inter);
+ filterState_append(first, next);
+ }
+ else
+ syntaxerror("Internal error: changing a filter not set for the instance.");
+}
+
+void history_processFlags(history_t* past)
+// to be called after completely recording this history, before calculating any values.
+{
+ state_t* flagState = dictionary_lookup(past->states, "flags");
+ state_t* nextState;
+ U16 nextFlags, toggledFlags, currentFlags = (U16)flagState->value;
+ while (flagState->next)
+ {
+ nextState = flagState->next;
+ nextFlags = (U16)nextState->value;
+ toggledFlags = currentFlags ^ nextFlags;
+ if (toggledFlags & IF_FIXED_ALIGNMENT)
+ { // the IF_FIXED_ALIGNMENT bit will change in the next state
+ if (nextFlags & IF_FIXED_ALIGNMENT)
+ { // the IF_FIXED_ALIGNMENT bit will be set
+ int onFrame = nextState->frame;
+ state_t* rotations = dictionary_lookup(past->states, "rotate");
+ nextState->params.instanceAngle = state_value(rotations, onFrame);
+ state_t* resetRotate = state_new(onFrame, CF_JUMP, 0, 0);
+ state_insert(rotations, resetRotate);
+ if (onFrame == past->firstFrame)
+ onFrame++;
+ state_t *x, *y;
+ float dx, dy;
+ do
+ {
+ x = dictionary_lookup(past->states, "x");
+ dx = state_tangent(x, onFrame, T_SYMMETRIC);
+ y = dictionary_lookup(past->states, "y");
+ dy = state_tangent(y, onFrame, T_SYMMETRIC);
+ onFrame++;
+ }
+ while (dx == 0 && dy == 0 && onFrame < past->lastFrame);
+ if (onFrame == past->lastFrame)
+ nextState->params.pathAngle = 0;
+ else
+ nextState->params.pathAngle = getAngle(dx, dy) / M_PI * 180;
+ }
+ else // the IF_FIXED_ALIGNMENT bit will be reset
+ {
+ int offFrame = nextState->frame;
+ state_t* rotations = dictionary_lookup(past->states, "rotate");
+ state_t* setRotate = state_new(offFrame, CF_JUMP, flagState->params.instanceAngle + state_value(rotations, offFrame), 0);
+ state_insert(rotations, setRotate);
+ }
+ }
+ else // the IF_FIXED_ALIGNMENT bit will not change but some processing may be
+ // required just the same
+ {
+ if (nextFlags & IF_FIXED_ALIGNMENT)
+ {
+ nextState->params.instanceAngle = flagState->params.instanceAngle;
+ nextState->params.pathAngle = flagState->params.pathAngle;
+ }
+ }
+// and so on for all the other bits.
+ flagState = nextState;
+ currentFlags = nextFlags;
}
}
int history_change(history_t* past, U16 frame, char* parameter)
{
- change_t* first = dictionary_lookup(past->changes, parameter);
+ state_t* first = dictionary_lookup(past->states, parameter);
if (first) //should always be true.
- return change_differs(first, frame);
- printf("no history found for parameter %s\n", parameter);
+ return state_differs(first, frame);
+ syntaxerror("no history found to predict changes for parameter %s.\n", parameter);
return 0;
}
float history_value(history_t* past, U16 frame, char* parameter)
{
- change_t* first = dictionary_lookup(past->changes, parameter);
- if (first) //should always be true.
- return change_value(first, frame);
- printf("no history found for parameter %s\n", parameter);
+ state_t* state = dictionary_lookup(past->states, parameter);
+ if (state) //should always be true.
+ return state_value(state, frame);
+ syntaxerror("no history found to get a value for parameter %s.\n", parameter);
+ return 0;
+}
+
+float history_rotateValue(history_t* past, U16 frame)
+{
+ state_t* rotations = dictionary_lookup(past->states, "rotate");
+ if (rotations) //should always be true.
+ {
+ float angle = state_value(rotations, frame);
+ state_t* flags = dictionary_lookup(past->states, "flags");
+ U16 currentflags = state_value(flags, frame);
+ if (currentflags & IF_FIXED_ALIGNMENT)
+ {
+ flags = state_at(flags, frame);
+ if (frame == past->firstFrame)
+ frame++;
+ state_t *x, *y;
+ float dx, dy, pathAngle;
+ do
+ {
+ x = dictionary_lookup(past->states, "x");
+ dx = state_value(x, frame) - state_value(x, frame - 1);
+ y = dictionary_lookup(past->states, "y");
+ dy = state_value(y, frame) - state_value(y, frame - 1);
+ frame--;
+ }
+ while (dx == 0 && dy == 0 && frame > past->firstFrame);
+ if (frame == past->firstFrame)
+ pathAngle = 0;
+ else
+ pathAngle = getAngle(dx, dy) / M_PI * 180;
+ return angle + flags->params.instanceAngle + pathAngle - flags->params.pathAngle;
+ }
+ else
+ return angle;
+ }
+ syntaxerror("no history found to get a value for parameter rotate.\n");
return 0;
}
int history_changeFilter(history_t* past, U16 frame)
{
- changeFilter_t* first = dictionary_lookup(past->changes, "filter");
+ filterState_t* first = dictionary_lookup(past->states, "filter");
if (first) //should always be true.
- return changeFilter_differs(first, frame);
- printf("no history found for parameter filter\n");
+ return filterState_differs(first, frame);
+ syntaxerror("no history found to predict changes for parameter filter.\n");
return 0;
}
-FILTERLIST* history_valueFilter(history_t* past, U16 frame)
+FILTERLIST* history_filterValue(history_t* past, U16 frame)
{
- changeFilter_t* first = dictionary_lookup(past->changes, "filter");
+ filterState_t* first = dictionary_lookup(past->states, "filter");
if (first) //should always be true.
- return changeFilter_value(first, frame);
- printf("no history found for parameter filter\n");
+ return filterState_value(first, frame);
+ syntaxerror("no history found to get a value for parameter filter.\n");
return 0;
}
#include <memory.h>
#include "swfc-interpolation.h"
-static inline float poly(float fraction, float start, float delta, int degree)
+static inline float poly(float fraction, float start, float delta, float slope, int degree)
{
- return delta * pow(fraction, degree) + start;
+ return delta * ((1 - slope) * pow(fraction, degree) + slope * fraction) + start;
}
float linear(float fraction, float start, float delta)
{
- return poly(fraction, start, delta, 1);
+ return poly(fraction, start, delta, 0, 1);
}
-float quadIn(float fraction, float start, float delta)
+float quadIn(float fraction, float start, float delta, float slope)
{
- return poly(fraction, start, delta, 2);
+ return poly(fraction, start, delta, slope, 2);
}
-float quadOut(float fraction, float start, float delta)
+float quadOut(float fraction, float start, float delta, float slope)
{
- return quadIn(1 - fraction, start + delta, -delta);
+ return quadIn(1 - fraction, start + delta, -delta, slope);
}
-float quadInOut(float fraction, float start, float delta)
+float quadInOut(float fraction, float start, float delta, float slope)
{
if (fraction < 0.5)
- return quadIn(2 * fraction, start, delta / 2);
- return quadOut(2 * fraction - 1, start + delta / 2, delta / 2);
+ return quadIn(2 * fraction, start, delta / 2, slope);
+ return quadOut(2 * fraction - 1, start + delta / 2, delta / 2, slope);
}
-float cubicIn(float fraction, float start, float delta)
+float cubicIn(float fraction, float start, float delta, float slope)
{
- return poly(fraction, start, delta, 3);
+ return poly(fraction, start, delta, slope, 3);
}
-float cubicOut(float fraction, float start, float delta)
+float cubicOut(float fraction, float start, float delta, float slope)
{
- return cubicIn(1 - fraction, start + delta, -delta);
+ return cubicIn(1 - fraction, start + delta, -delta, slope);
}
-float cubicInOut(float fraction, float start, float delta)
+float cubicInOut(float fraction, float start, float delta, float slope)
{
if (fraction < 0.5)
- return cubicIn(2 * fraction, start, delta / 2);
- return cubicOut(2 * fraction - 1, start + delta / 2, delta / 2);
+ return cubicIn(2 * fraction, start, delta / 2, slope);
+ return cubicOut(2 * fraction - 1, start + delta / 2, delta / 2, slope);
}
-float quartIn(float fraction, float start, float delta)
+float quartIn(float fraction, float start, float delta, float slope)
{
- return poly(fraction, start, delta, 4);
+ return poly(fraction, start, delta, slope, 4);
}
-float quartOut(float fraction, float start, float delta)
+float quartOut(float fraction, float start, float delta, float slope)
{
- return quartIn(1 - fraction, start + delta, -delta);
+ return quartIn(1 - fraction, start + delta, -delta, slope);
}
-float quartInOut(float fraction, float start, float delta)
+float quartInOut(float fraction, float start, float delta, float slope)
{
if (fraction < 0.5)
- return quartIn(2 * fraction, start, delta / 2);
- return quartOut(2 * fraction - 1, start + delta / 2, delta / 2);
+ return quartIn(2 * fraction, start, delta / 2, slope);
+ return quartOut(2 * fraction - 1, start + delta / 2, delta / 2, slope);
}
-float quintIn(float fraction, float start, float delta)
+float quintIn(float fraction, float start, float delta, float slope)
{
- return poly(fraction, start, delta, 5);
+ return poly(fraction, start, delta, slope, 5);
}
-float quintOut(float fraction, float start, float delta)
+float quintOut(float fraction, float start, float delta, float slope)
{
- return quintIn(1 - fraction, start + delta, -delta);
+ return quintIn(1 - fraction, start + delta, -delta, slope);
}
-float quintInOut(float fraction, float start, float delta)
+float quintInOut(float fraction, float start, float delta, float slope)
{
if (fraction < 0.5)
- return quintIn(2 * fraction, start, delta / 2);
- return quintOut(2 * fraction - 1, start + delta / 2, delta / 2);
+ return quintIn(2 * fraction, start, delta / 2, slope);
+ return quintOut(2 * fraction - 1, start + delta / 2, delta / 2, slope);
}
-float circleIn(float fraction, float start, float delta)
+float circleIn(float fraction, float start, float delta, float slope)
{
- return delta * (1 - sqrt(1 - fraction * fraction)) + start;
+ return delta * (1 - sqrt(1 - (1 - 2 * slope) * fraction * fraction - 2 * slope * fraction)) + start;
}
-float circleOut(float fraction, float start, float delta)
+float circleOut(float fraction, float start, float delta, float slope)
{
- return circleIn(1 - fraction, start + delta, -delta);
+ return circleIn(1 - fraction, start + delta, -delta, slope);
}
-float circleInOut(float fraction, float start, float delta)
+float circleInOut(float fraction, float start, float delta, float slope)
{
if (fraction < 0.5)
- return circleIn(2 * fraction, start, delta / 2);
- return circleOut(2 * fraction - 1, start + delta / 2, delta / 2);
+ return circleIn(2 * fraction, start, delta / 2, slope);
+ return circleOut(2 * fraction - 1, start + delta / 2, delta / 2, slope);
}
float exponentialIn(float fraction, float start, float delta)
git.asbjorn.biz / swftools.git / commitdiff