Differential D10300 Diff 33525 source/blender/editors/transform/transform_convert_nla.c

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source/blender/editors/transform/transform_convert_nla.c

Show First 20 Lines • Show All 298 Lines • ▼ Show 20 Lines	void recalcData_nla(TransInfo *t)

/* For each strip we've got, perform some additional validation of the values		/* For each strip we've got, perform some additional validation of the values
* that got set before using RNA to set the value (which does some special		* that got set before using RNA to set the value (which does some special
* operations when setting these values to make sure that everything works ok).		* operations when setting these values to make sure that everything works ok).
*/		*/
for (i = 0; i < tc->data_len; i++, tdn++) {		for (i = 0; i < tc->data_len; i++, tdn++) {
NlaStrip *strip = tdn->strip;		NlaStrip *strip = tdn->strip;
PointerRNA strip_ptr;		PointerRNA strip_ptr;
short pExceeded, nExceeded, iter;		short iter;
int delta_y1, delta_y2;		int delta_y1, delta_y2;

/* if this tdn has no handles, that means it is just a dummy that should be skipped */		/* if this tdn has no handles, that means it is just a dummy that should be skipped */
if (tdn->handle == 0) {		if (tdn->handle == 0) {
continue;		continue;
}		}

/* set refresh tags for objects using this animation,		/* set refresh tags for objects using this animation,
Show All 37 Lines	if (t->state == TRANS_CANCEL) {
continue;		continue;
}		}

/* firstly, check if the proposed transform locations would overlap with any neighboring strips		/* firstly, check if the proposed transform locations would overlap with any neighboring strips
* (barring transitions) which are absolute barriers since they are not being moved		* (barring transitions) which are absolute barriers since they are not being moved
*		*
* this is done as a iterative procedure (done 5 times max for now)		* this is done as a iterative procedure (done 5 times max for now)
*/		*/
		NlaStrip *prev = strip->prev;
		while (prev != NULL && (prev->type & NLASTRIP_TYPE_TRANSITION)) {
		prev = prev->prev;
		}

		NlaStrip *next = strip->next;
		while (next != NULL && (next->type & NLASTRIP_TYPE_TRANSITION)) {
		next = next->next;
		}

for (iter = 0; iter < 5; iter++) {		for (iter = 0; iter < 5; iter++) {
pExceeded = ((strip->prev) && (strip->prev->type != NLASTRIP_TYPE_TRANSITION) &&
(tdn->h1[0] < strip->prev->end));		const bool pExceeded = (prev != NULL) && (tdn->h1[0] < prev->end);
nExceeded = ((strip->next) && (strip->next->type != NLASTRIP_TYPE_TRANSITION) &&		const bool nExceeded = (next != NULL) && (tdn->h2[0] > next->start);
(tdn->h2[0] > strip->next->start));

if ((pExceeded && nExceeded) \|\| (iter == 4)) {		if ((pExceeded && nExceeded) \|\| (iter == 4)) {
/* both endpoints exceeded (or iteration ping-pong'd meaning that we need a compromise)		/* both endpoints exceeded (or iteration ping-pong'd meaning that we need a
		* compromise)
* - Simply crop strip to fit within the bounds of the strips bounding it		* - Simply crop strip to fit within the bounds of the strips bounding it
* - If there were no neighbors, clear the transforms		* - If there were no neighbors, clear the transforms
* (make it default to the strip's current values).		* (make it default to the strip's current values).
*/		*/
if (strip->prev && strip->next) {		if (prev && next) {
tdn->h1[0] = strip->prev->end;		tdn->h1[0] = prev->end;
tdn->h2[0] = strip->next->start;		tdn->h2[0] = next->start;
}		}
else {		else {
tdn->h1[0] = strip->start;		tdn->h1[0] = strip->start;
tdn->h2[0] = strip->end;		tdn->h2[0] = strip->end;
}		}
}		}
else if (nExceeded) {		else if (nExceeded) {
/* move backwards */		/* move backwards */
float offset = tdn->h2[0] - strip->next->start;		float offset = tdn->h2[0] - next->start;

tdn->h1[0] -= offset;		tdn->h1[0] -= offset;
tdn->h2[0] -= offset;		tdn->h2[0] -= offset;
}		}
else if (pExceeded) {		else if (pExceeded) {
/* more forwards */		/* more forwards */
float offset = strip->prev->end - tdn->h1[0];		float offset = prev->end - tdn->h1[0];

tdn->h1[0] += offset;		tdn->h1[0] += offset;
tdn->h2[0] += offset;		tdn->h2[0] += offset;
}		}
else { /* all is fine and well */		else { /* all is fine and well */
break;		break;
}		}
}		}
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