/* helper func - just draw the F-Curve by sampling the visible region (for drawing curves with modifiers) */
static void draw_fcurve_curve(bAnimContext *ac, ID *id, FCurve *fcu, View2D *v2d, View2DGrid *grid)
{
ChannelDriver *driver;
float samplefreq, ctime;
float stime, etime;
float unitFac;
float dx, dy;
short mapping_flag = ANIM_get_normalization_flags(ac);
/* when opening a blend file on a different sized screen or while dragging the toolbar this can happen
* best just bail out in this case */
UI_view2d_grid_size(grid, &dx, &dy);
if (dx <= 0.0f)
return;
/* disable any drivers temporarily */
driver = fcu->driver;
fcu->driver = NULL;
/* compute unit correction factor */
unitFac = ANIM_unit_mapping_get_factor(ac->scene, id, fcu, mapping_flag);
/* Note about sampling frequency:
* Ideally, this is chosen such that we have 1-2 pixels = 1 segment
* which means that our curves can be as smooth as possible. However,
* this does mean that curves may not be fully accurate (i.e. if they have
* sudden spikes which happen at the sampling point, we may have problems).
* Also, this may introduce lower performance on less densely detailed curves,'
* though it is impossible to predict this from the modifiers!
*
* If the automatically determined sampling frequency is likely to cause an infinite
* loop (i.e. too close to 0), then clamp it to a determined "safe" value. The value
* chosen here is just the coarsest value which still looks reasonable...
*/
/* grid->dx represents the number of 'frames' between gridlines, but we divide by U.v2d_min_gridsize to get pixels-steps */
/* TODO: perhaps we should have 1.0 frames as upper limit so that curves don't get too distorted? */
samplefreq = dx / (U.v2d_min_gridsize * U.pixelsize);
if (samplefreq < 0.00001f) samplefreq = 0.00001f;
/* the start/end times are simply the horizontal extents of the 'cur' rect */
stime = v2d->cur.xmin;
etime = v2d->cur.xmax + samplefreq; /* + samplefreq here so that last item gets included... */
/* at each sampling interval, add a new vertex
* - apply the unit correction factor to the calculated values so that
* the displayed values appear correctly in the viewport
*/
glBegin(GL_LINE_STRIP);
for (ctime = stime; ctime <= etime; ctime += samplefreq)
glVertex2f(ctime, evaluate_fcurve(fcu, ctime) * unitFac);
glEnd();
/* restore driver */
fcu->driver = driver;
}
/* Evaluates the curves between each selected keyframe on each frame, and keys the value */
void sample_fcurve (FCurve *fcu)
{
BezTriple *bezt, *start=NULL, *end=NULL;
tempFrameValCache *value_cache, *fp;
int sfra, range;
int i, n, nIndex;
/* find selected keyframes... once pair has been found, add keyframes */
for (i=0, bezt=fcu->bezt; i < fcu->totvert; i++, bezt++) {
/* check if selected, and which end this is */
if (BEZSELECTED(bezt)) {
if (start) {
/* set end */
end= bezt;
/* cache values then add keyframes using these values, as adding
* keyframes while sampling will affect the outcome...
* - only start sampling+adding from index=1, so that we don't overwrite original keyframe
*/
range= (int)( ceil(end->vec[1][0] - start->vec[1][0]) );
sfra= (int)( floor(start->vec[1][0]) );
if (range) {
value_cache= MEM_callocN(sizeof(tempFrameValCache)*range, "IcuFrameValCache");
/* sample values */
for (n=1, fp=value_cache; n<range && fp; n++, fp++) {
fp->frame= (float)(sfra + n);
fp->val= evaluate_fcurve(fcu, fp->frame);
}
/* add keyframes with these, tagging as 'breakdowns' */
for (n=1, fp=value_cache; n<range && fp; n++, fp++) {
nIndex= insert_vert_fcurve(fcu, fp->frame, fp->val, 1);
BEZKEYTYPE(fcu->bezt + nIndex)= BEZT_KEYTYPE_BREAKDOWN;
}
/* free temp cache */
MEM_freeN(value_cache);
/* as we added keyframes, we need to compensate so that bezt is at the right place */
bezt = fcu->bezt + i + range - 1;
i += (range - 1);
}
/* bezt was selected, so it now marks the start of a whole new chain to search */
start= bezt;
end= NULL;
}
else {
/* just set start keyframe */
start= bezt;
end= NULL;
}
}
}
/* recalculate channel's handles? */
calchandles_fcurve(fcu);
}
/* helper call for drawing influence/time control curves for a given NLA-strip */
static void nla_draw_strip_curves(NlaStrip *strip, float yminc, float ymaxc)
{
const float yheight = ymaxc - yminc;
/* drawing color is simply a light-gray */
// TODO: is this color suitable?
// XXX nasty hacked color for now... which looks quite bad too...
glColor3f(0.7f, 0.7f, 0.7f);
/* draw with AA'd line */
glEnable(GL_LINE_SMOOTH);
glEnable(GL_BLEND);
/* influence -------------------------- */
if (strip->flag & NLASTRIP_FLAG_USR_INFLUENCE) {
FCurve *fcu = list_find_fcurve(&strip->fcurves, "influence", 0);
float cfra;
/* plot the curve (over the strip's main region) */
glBegin(GL_LINE_STRIP);
/* sample at 1 frame intervals, and draw
* - min y-val is yminc, max is y-maxc, so clamp in those regions
*/
for (cfra = strip->start; cfra <= strip->end; cfra += 1.0f) {
float y = evaluate_fcurve(fcu, cfra);
CLAMP(y, 0.0f, 1.0f);
glVertex2f(cfra, ((y * yheight) + yminc));
}
glEnd(); // GL_LINE_STRIP
}
else {
/* use blend in/out values only if both aren't zero */
if ((IS_EQF(strip->blendin, 0.0f) && IS_EQF(strip->blendout, 0.0f)) == 0) {
glBegin(GL_LINE_STRIP);
/* start of strip - if no blendin, start straight at 1, otherwise from 0 to 1 over blendin frames */
if (IS_EQF(strip->blendin, 0.0f) == 0) {
glVertex2f(strip->start, yminc);
glVertex2f(strip->start + strip->blendin, ymaxc);
}
else
glVertex2f(strip->start, ymaxc);
/* end of strip */
if (IS_EQF(strip->blendout, 0.0f) == 0) {
glVertex2f(strip->end - strip->blendout, ymaxc);
glVertex2f(strip->end, yminc);
}
else
glVertex2f(strip->end, ymaxc);
glEnd(); // GL_LINE_STRIP
}
}
/* time -------------------------- */
// XXX do we want to draw this curve? in a different color too?
/* turn off AA'd lines */
glDisable(GL_LINE_SMOOTH);
glDisable(GL_BLEND);
}
/* Create new libmv Tracks structure from blender's tracks list. */
static struct libmv_Tracks *libmv_tracks_new(MovieClip *clip, ListBase *tracksbase, int width, int height)
{
int tracknr = 0;
MovieTrackingTrack *track;
struct libmv_Tracks *tracks = libmv_tracksNew();
track = tracksbase->first;
while (track) {
FCurve *weight_fcurve;
int a = 0;
weight_fcurve = id_data_find_fcurve(&clip->id, track, &RNA_MovieTrackingTrack,
"weight", 0, NULL);
for (a = 0; a < track->markersnr; a++) {
MovieTrackingMarker *marker = &track->markers[a];
if ((marker->flag & MARKER_DISABLED) == 0) {
float weight = track->weight;
if (weight_fcurve) {
int scene_framenr =
BKE_movieclip_remap_clip_to_scene_frame(clip, marker->framenr);
weight = evaluate_fcurve(weight_fcurve, scene_framenr);
}
libmv_tracksInsert(tracks, marker->framenr, tracknr,
(marker->pos[0] + track->offset[0]) * width,
(marker->pos[1] + track->offset[1]) * height,
weight);
}
}
track = track->next;
tracknr++;
}
return tracks;
}
/* helper func - just draw the F-Curve by sampling the visible region (for drawing curves with modifiers) */
static void draw_fcurve_curve(bAnimContext *ac, ID *id, FCurve *fcu, View2D *v2d, View2DGrid *grid)
{
SpaceIpo *sipo = (SpaceIpo *)ac->sl;
ChannelDriver *driver;
float samplefreq;
float stime, etime;
float unitFac, offset;
float dx, dy;
short mapping_flag = ANIM_get_normalization_flags(ac);
int i, n;
/* when opening a blend file on a different sized screen or while dragging the toolbar this can happen
* best just bail out in this case */
UI_view2d_grid_size(grid, &dx, &dy);
if (dx <= 0.0f)
return;
/* disable any drivers temporarily */
driver = fcu->driver;
fcu->driver = NULL;
/* compute unit correction factor */
unitFac = ANIM_unit_mapping_get_factor(ac->scene, id, fcu, mapping_flag, &offset);
/* Note about sampling frequency:
* Ideally, this is chosen such that we have 1-2 pixels = 1 segment
* which means that our curves can be as smooth as possible. However,
* this does mean that curves may not be fully accurate (i.e. if they have
* sudden spikes which happen at the sampling point, we may have problems).
* Also, this may introduce lower performance on less densely detailed curves,
* though it is impossible to predict this from the modifiers!
*
* If the automatically determined sampling frequency is likely to cause an infinite
* loop (i.e. too close to 0), then clamp it to a determined "safe" value. The value
* chosen here is just the coarsest value which still looks reasonable...
*/
/* grid->dx represents the number of 'frames' between gridlines, but we divide by U.v2d_min_gridsize to get pixels-steps */
/* TODO: perhaps we should have 1.0 frames as upper limit so that curves don't get too distorted? */
samplefreq = dx / (U.v2d_min_gridsize * U.pixelsize);
if (sipo->flag & SIPO_BEAUTYDRAW_OFF) {
/* Low Precision = coarse lower-bound clamping
*
* Although the "Beauty Draw" flag was originally for AA'd
* line drawing, the sampling rate here has a much greater
* impact on performance (e.g. for T40372)!
*
* This one still amounts to 10 sample-frames for each 1-frame interval
* which should be quite a decent approximation in many situations.
*/
if (samplefreq < 0.1f)
samplefreq = 0.1f;
}
else {
/* "Higher Precision" but slower - especially on larger windows (e.g. T40372) */
if (samplefreq < 0.00001f)
samplefreq = 0.00001f;
}
/* the start/end times are simply the horizontal extents of the 'cur' rect */
stime = v2d->cur.xmin;
etime = v2d->cur.xmax + samplefreq; /* + samplefreq here so that last item gets included... */
/* at each sampling interval, add a new vertex
* - apply the unit correction factor to the calculated values so that
* the displayed values appear correctly in the viewport
*/
glBegin(GL_LINE_STRIP);
n = (etime - stime) / samplefreq + 0.5f;
for (i = 0; i <= n; i++) {
float ctime = stime + i * samplefreq;
glVertex2f(ctime, (evaluate_fcurve(fcu, ctime) + offset) * unitFac);
}
glEnd();
/* restore driver */
fcu->driver = driver;
}
/* helper for apply() - perform sliding for quaternion rotations (using quat blending) */
static void pose_slide_apply_quat(tPoseSlideOp *pso, tPChanFCurveLink *pfl)
{
FCurve *fcu_w = NULL, *fcu_x = NULL, *fcu_y = NULL, *fcu_z = NULL;
bPoseChannel *pchan = pfl->pchan;
LinkData *ld = NULL;
char *path = NULL;
float cframe;
/* get the path to use - this should be quaternion rotations only (needs care) */
path = BLI_sprintfN("%s.%s", pfl->pchan_path, "rotation_quaternion");
/* get the current frame number */
cframe = (float)pso->cframe;
/* using this path, find each matching F-Curve for the variables we're interested in */
while ( (ld = poseAnim_mapping_getNextFCurve(&pfl->fcurves, ld, path)) ) {
FCurve *fcu = (FCurve *)ld->data;
/* assign this F-Curve to one of the relevant pointers... */
switch (fcu->array_index) {
case 3: /* z */
fcu_z = fcu;
break;
case 2: /* y */
fcu_y = fcu;
break;
case 1: /* x */
fcu_x = fcu;
break;
case 0: /* w */
fcu_w = fcu;
break;
}
}
/* only if all channels exist, proceed */
if (fcu_w && fcu_x && fcu_y && fcu_z) {
float quat_prev[4], quat_next[4];
/* get 2 quats */
quat_prev[0] = evaluate_fcurve(fcu_w, pso->prevFrame);
quat_prev[1] = evaluate_fcurve(fcu_x, pso->prevFrame);
quat_prev[2] = evaluate_fcurve(fcu_y, pso->prevFrame);
quat_prev[3] = evaluate_fcurve(fcu_z, pso->prevFrame);
quat_next[0] = evaluate_fcurve(fcu_w, pso->nextFrame);
quat_next[1] = evaluate_fcurve(fcu_x, pso->nextFrame);
quat_next[2] = evaluate_fcurve(fcu_y, pso->nextFrame);
quat_next[3] = evaluate_fcurve(fcu_z, pso->nextFrame);
/* perform blending */
if (pso->mode == POSESLIDE_BREAKDOWN) {
/* just perform the interpol between quat_prev and quat_next using pso->percentage as a guide */
interp_qt_qtqt(pchan->quat, quat_prev, quat_next, pso->percentage);
}
else if (pso->mode == POSESLIDE_PUSH) {
float quat_diff[4], quat_orig[4];
/* calculate the delta transform from the previous to the current */
/* TODO: investigate ways to favour one transform more? */
sub_qt_qtqt(quat_diff, pchan->quat, quat_prev);
/* make a copy of the original rotation */
copy_qt_qt(quat_orig, pchan->quat);
/* increase the original by the delta transform, by an amount determined by percentage */
add_qt_qtqt(pchan->quat, quat_orig, quat_diff, pso->percentage);
}
else {
float quat_interp[4], quat_orig[4];
int iters = (int)ceil(10.0f * pso->percentage); /* TODO: maybe a sensitivity ctrl on top of this is needed */
/* perform this blending several times until a satisfactory result is reached */
while (iters-- > 0) {
/* calculate the interpolation between the endpoints */
interp_qt_qtqt(quat_interp, quat_prev, quat_next, (cframe - pso->prevFrame) / (pso->nextFrame - pso->prevFrame));
/* make a copy of the original rotation */
copy_qt_qt(quat_orig, pchan->quat);
/* tricky interpolations - blending between original and new */
interp_qt_qtqt(pchan->quat, quat_orig, quat_interp, 1.0f / 6.0f);
}
}
}
/* free the path now */
MEM_freeN(path);
}
/* helper for apply() - perform sliding for some value */
static void pose_slide_apply_val(tPoseSlideOp *pso, FCurve *fcu, float *val)
{
float cframe = (float)pso->cframe;
float sVal, eVal;
float w1, w2;
/* get keyframe values for endpoint poses to blend with */
/* previous/start */
sVal = evaluate_fcurve(fcu, (float)pso->prevFrame);
/* next/end */
eVal = evaluate_fcurve(fcu, (float)pso->nextFrame);
/* calculate the relative weights of the endpoints */
if (pso->mode == POSESLIDE_BREAKDOWN) {
/* get weights from the percentage control */
w1 = pso->percentage; /* this must come second */
w2 = 1.0f - w1; /* this must come first */
}
else {
/* - these weights are derived from the relative distance of these
* poses from the current frame
* - they then get normalized so that they only sum up to 1
*/
float wtot;
w1 = cframe - (float)pso->prevFrame;
w2 = (float)pso->nextFrame - cframe;
wtot = w1 + w2;
w1 = (w1 / wtot);
w2 = (w2 / wtot);
}
/* depending on the mode, calculate the new value
* - in all of these, the start+end values are multiplied by w2 and w1 (respectively),
* since multiplication in another order would decrease the value the current frame is closer to
*/
switch (pso->mode) {
case POSESLIDE_PUSH: /* make the current pose more pronounced */
{
/* perform a weighted average here, favoring the middle pose
* - numerator should be larger than denominator to 'expand' the result
* - perform this weighting a number of times given by the percentage...
*/
int iters = (int)ceil(10.0f * pso->percentage); /* TODO: maybe a sensitivity ctrl on top of this is needed */
while (iters-- > 0) {
(*val) = (-((sVal * w2) + (eVal * w1)) + ((*val) * 6.0f) ) / 5.0f;
}
break;
}
case POSESLIDE_RELAX: /* make the current pose more like its surrounding ones */
{
/* perform a weighted average here, favoring the middle pose
* - numerator should be smaller than denominator to 'relax' the result
* - perform this weighting a number of times given by the percentage...
*/
int iters = (int)ceil(10.0f * pso->percentage); /* TODO: maybe a sensitivity ctrl on top of this is needed */
while (iters-- > 0) {
(*val) = ( ((sVal * w2) + (eVal * w1)) + ((*val) * 5.0f) ) / 6.0f;
}
break;
}
case POSESLIDE_BREAKDOWN: /* make the current pose slide around between the endpoints */
{
/* perform simple linear interpolation - coefficient for start must come from pso->percentage... */
/* TODO: make this use some kind of spline interpolation instead? */
(*val) = ((sVal * w2) + (eVal * w1));
break;
}
}
}
/* helper call for drawing influence/time control curves for a given NLA-strip */
static void nla_draw_strip_curves(NlaStrip *strip, float yminc, float ymaxc, unsigned int pos)
{
const float yheight = ymaxc - yminc;
immUniformColor3f(0.7f, 0.7f, 0.7f);
/* draw with AA'd line */
GPU_line_smooth(true);
GPU_blend(true);
/* influence -------------------------- */
if (strip->flag & NLASTRIP_FLAG_USR_INFLUENCE) {
FCurve *fcu = list_find_fcurve(&strip->fcurves, "influence", 0);
float cfra;
/* plot the curve (over the strip's main region) */
if (fcu) {
immBegin(GPU_PRIM_LINE_STRIP, abs((int)(strip->end - strip->start) + 1));
/* sample at 1 frame intervals, and draw
* - min y-val is yminc, max is y-maxc, so clamp in those regions
*/
for (cfra = strip->start; cfra <= strip->end; cfra += 1.0f) {
float y = evaluate_fcurve(fcu, cfra); /* assume this to be in 0-1 range */
CLAMP(y, 0.0f, 1.0f);
immVertex2f(pos, cfra, ((y * yheight) + yminc));
}
immEnd();
}
}
else {
/* use blend in/out values only if both aren't zero */
if ((IS_EQF(strip->blendin, 0.0f) && IS_EQF(strip->blendout, 0.0f)) == 0) {
immBeginAtMost(GPU_PRIM_LINE_STRIP, 4);
/* start of strip - if no blendin, start straight at 1,
* otherwise from 0 to 1 over blendin frames */
if (IS_EQF(strip->blendin, 0.0f) == 0) {
immVertex2f(pos, strip->start, yminc);
immVertex2f(pos, strip->start + strip->blendin, ymaxc);
}
else {
immVertex2f(pos, strip->start, ymaxc);
}
/* end of strip */
if (IS_EQF(strip->blendout, 0.0f) == 0) {
immVertex2f(pos, strip->end - strip->blendout, ymaxc);
immVertex2f(pos, strip->end, yminc);
}
else {
immVertex2f(pos, strip->end, ymaxc);
}
immEnd();
}
}
/* turn off AA'd lines */
GPU_line_smooth(false);
GPU_blend(false);
}