Transform: Split transform_conversions into multiple files.

Part of T68836

`transform conversions.c` is a file that is getting too big (almost 10,000 lines).
So it's a good idea to split it into smaller files.

differential revision: https://developer.blender.org/D5677

1 files changed, 700 insertions, 0 deletions

diff --git a/source/blender/editors/transform/transform_convert_graph.c b/source/blender/editors/transform/transform_convert_graph.c
new file mode 100644
index 00000000000..c3afbb9b7ba
--- /dev/null
+++ b/source/blender/editors/transform/transform_convert_graph.c
@@ -0,0 +1,700 @@
+/*
+ * 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 2
+ * 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, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup edtransform
+ */
+
+#include "DNA_anim_types.h"
+#include "DNA_space_types.h"
+
+#include "MEM_guardedalloc.h"
+
+#include "BLI_math.h"
+
+#include "BKE_context.h"
+#include "BKE_fcurve.h"
+#include "BKE_nla.h"
+#include "BKE_report.h"
+
+#include "ED_anim_api.h"
+#include "ED_markers.h"
+
+#include "UI_view2d.h"
+
+#include "transform.h"
+#include "transform_convert.h"
+
+typedef struct TransDataGraph {
+  float unit_scale;
+  float offset;
+} TransDataGraph;
+
+/* -------------------------------------------------------------------- */
+/** \name Graph Editor Transform Creation
+ *
+ * \{ */
+
+/* Helper function for createTransGraphEditData, which is responsible for associating
+ * source data with transform data
+ */
+static void bezt_to_transdata(TransData *td,
+                              TransData2D *td2d,
+                              TransDataGraph *tdg,
+                              AnimData *adt,
+                              BezTriple *bezt,
+                              int bi,
+                              bool selected,
+                              bool ishandle,
+                              bool intvals,
+                              float mtx[3][3],
+                              float smtx[3][3],
+                              float unit_scale,
+                              float offset)
+{
+  float *loc = bezt->vec[bi];
+  const float *cent = bezt->vec[1];
+
+  /* New location from td gets dumped onto the old-location of td2d, which then
+   * gets copied to the actual data at td2d->loc2d (bezt->vec[n])
+   *
+   * Due to NLA mapping, we apply NLA mapping to some of the verts here,
+   * and then that mapping will be undone after transform is done.
+   */
+
+  if (adt) {
+    td2d->loc[0] = BKE_nla_tweakedit_remap(adt, loc[0], NLATIME_CONVERT_MAP);
+    td2d->loc[1] = (loc[1] + offset) * unit_scale;
+    td2d->loc[2] = 0.0f;
+    td2d->loc2d = loc;
+
+    td->loc = td2d->loc;
+    td->center[0] = BKE_nla_tweakedit_remap(adt, cent[0], NLATIME_CONVERT_MAP);
+    td->center[1] = (cent[1] + offset) * unit_scale;
+    td->center[2] = 0.0f;
+
+    copy_v3_v3(td->iloc, td->loc);
+  }
+  else {
+    td2d->loc[0] = loc[0];
+    td2d->loc[1] = (loc[1] + offset) * unit_scale;
+    td2d->loc[2] = 0.0f;
+    td2d->loc2d = loc;
+
+    td->loc = td2d->loc;
+    copy_v3_v3(td->center, cent);
+    td->center[1] = (td->center[1] + offset) * unit_scale;
+    copy_v3_v3(td->iloc, td->loc);
+  }
+
+  if (!ishandle) {
+    td2d->h1 = bezt->vec[0];
+    td2d->h2 = bezt->vec[2];
+    copy_v2_v2(td2d->ih1, td2d->h1);
+    copy_v2_v2(td2d->ih2, td2d->h2);
+  }
+  else {
+    td2d->h1 = NULL;
+    td2d->h2 = NULL;
+  }
+
+  memset(td->axismtx, 0, sizeof(td->axismtx));
+  td->axismtx[2][2] = 1.0f;
+
+  td->ext = NULL;
+  td->val = NULL;
+
+  /* store AnimData info in td->extra, for applying mapping when flushing */
+  td->extra = adt;
+
+  if (selected) {
+    td->flag |= TD_SELECTED;
+    td->dist = 0.0f;
+  }
+  else {
+    td->dist = FLT_MAX;
+  }
+
+  if (ishandle) {
+    td->flag |= TD_NOTIMESNAP;
+  }
+  if (intvals) {
+    td->flag |= TD_INTVALUES;
+  }
+
+  /* copy space-conversion matrices for dealing with non-uniform scales */
+  copy_m3_m3(td->mtx, mtx);
+  copy_m3_m3(td->smtx, smtx);
+
+  tdg->unit_scale = unit_scale;
+  tdg->offset = offset;
+}
+
+static bool graph_edit_is_translation_mode(TransInfo *t)
+{
+  return ELEM(t->mode, TFM_TRANSLATION, TFM_TIME_TRANSLATE, TFM_TIME_SLIDE, TFM_TIME_DUPLICATE);
+}
+
+static bool graph_edit_use_local_center(TransInfo *t)
+{
+  return ((t->around == V3D_AROUND_LOCAL_ORIGINS) && (graph_edit_is_translation_mode(t) == false));
+}
+
+static void graph_key_shortest_dist(
+    TransInfo *t, FCurve *fcu, TransData *td_start, TransData *td, int cfra, bool use_handle)
+{
+  int j = 0;
+  TransData *td_iter = td_start;
+
+  td->dist = FLT_MAX;
+  for (; j < fcu->totvert; j++) {
+    BezTriple *bezt = fcu->bezt + j;
+    if (FrameOnMouseSide(t->frame_side, bezt->vec[1][0], cfra)) {
+      const bool sel2 = (bezt->f2 & SELECT) != 0;
+      const bool sel1 = use_handle ? (bezt->f1 & SELECT) != 0 : sel2;
+      const bool sel3 = use_handle ? (bezt->f3 & SELECT) != 0 : sel2;
+
+      if (sel1 || sel2 || sel3) {
+        td->dist = td->rdist = min_ff(td->dist, fabs(td_iter->center[0] - td->center[0]));
+      }
+
+      td_iter += 3;
+    }
+  }
+}
+
+void createTransGraphEditData(bContext *C, TransInfo *t)
+{
+  SpaceGraph *sipo = (SpaceGraph *)t->sa->spacedata.first;
+  Scene *scene = t->scene;
+  ARegion *ar = t->ar;
+  View2D *v2d = &ar->v2d;
+
+  TransData *td = NULL;
+  TransData2D *td2d = NULL;
+  TransDataGraph *tdg = NULL;
+
+  bAnimContext ac;
+  ListBase anim_data = {NULL, NULL};
+  bAnimListElem *ale;
+  int filter;
+
+  BezTriple *bezt;
+  int count = 0, i;
+  float mtx[3][3], smtx[3][3];
+  const bool is_translation_mode = graph_edit_is_translation_mode(t);
+  const bool use_handle = !(sipo->flag & SIPO_NOHANDLES);
+  const bool use_local_center = graph_edit_use_local_center(t);
+  const bool is_prop_edit = (t->flag & T_PROP_EDIT) != 0;
+  short anim_map_flag = ANIM_UNITCONV_ONLYSEL | ANIM_UNITCONV_SELVERTS;
+
+  /* determine what type of data we are operating on */
+  if (ANIM_animdata_get_context(C, &ac) == 0) {
+    return;
+  }
+
+  anim_map_flag |= ANIM_get_normalization_flags(&ac);
+
+  /* filter data */
+  filter = (ANIMFILTER_DATA_VISIBLE | ANIMFILTER_FOREDIT | ANIMFILTER_CURVE_VISIBLE);
+  ANIM_animdata_filter(&ac, &anim_data, filter, ac.data, ac.datatype);
+
+  /* which side of the current frame should be allowed */
+  // XXX we still want this mode, but how to get this using standard transform too?
+  if (t->mode == TFM_TIME_EXTEND) {
+    /* only side on which mouse is gets transformed */
+    float xmouse, ymouse;
+
+    UI_view2d_region_to_view(v2d, t->mouse.imval[0], t->mouse.imval[1], &xmouse, &ymouse);
+    t->frame_side = (xmouse > CFRA) ? 'R' : 'L';  // XXX use t->frame_side
+  }
+  else {
+    /* normal transform - both sides of current frame are considered */
+    t->frame_side = 'B';
+  }
+
+  /* Loop 1: count how many BezTriples (specifically their verts)
+   * are selected (or should be edited). */
+  for (ale = anim_data.first; ale; ale = ale->next) {
+    AnimData *adt = ANIM_nla_mapping_get(&ac, ale);
+    FCurve *fcu = (FCurve *)ale->key_data;
+    float cfra;
+    int curvecount = 0;
+    bool selected = false;
+
+    /* F-Curve may not have any keyframes */
+    if (fcu->bezt == NULL) {
+      continue;
+    }
+
+    /* convert current-frame to action-time (slightly less accurate, especially under
+     * higher scaling ratios, but is faster than converting all points)
+     */
+    if (adt) {
+      cfra = BKE_nla_tweakedit_remap(adt, (float)CFRA, NLATIME_CONVERT_UNMAP);
+    }
+    else {
+      cfra = (float)CFRA;
+    }
+
+    /* Only include BezTriples whose 'keyframe'
+     * occurs on the same side of the current frame as mouse. */
+    for (i = 0, bezt = fcu->bezt; i < fcu->totvert; i++, bezt++) {
+      if (FrameOnMouseSide(t->frame_side, bezt->vec[1][0], cfra)) {
+        const bool sel2 = (bezt->f2 & SELECT) != 0;
+        const bool sel1 = use_handle ? (bezt->f1 & SELECT) != 0 : sel2;
+        const bool sel3 = use_handle ? (bezt->f3 & SELECT) != 0 : sel2;
+
+        if (is_prop_edit) {
+          curvecount += 3;
+          if (sel2 || sel1 || sel3) {
+            selected = true;
+          }
+        }
+        else {
+          if (!is_translation_mode || !(sel2)) {
+            if (sel1) {
+              count++;
+            }
+
+            if (sel3) {
+              count++;
+            }
+          }
+
+          /* only include main vert if selected */
+          if (sel2 && !use_local_center) {
+            count++;
+          }
+        }
+      }
+    }
+
+    if (is_prop_edit) {
+      if (selected) {
+        count += curvecount;
+        ale->tag = true;
+      }
+    }
+  }
+
+  /* stop if trying to build list if nothing selected */
+  if (count == 0) {
+    /* cleanup temp list */
+    ANIM_animdata_freelist(&anim_data);
+    return;
+  }
+
+  TransDataContainer *tc = TRANS_DATA_CONTAINER_FIRST_SINGLE(t);
+
+  /* allocate memory for data */
+  tc->data_len = count;
+
+  tc->data = MEM_callocN(tc->data_len * sizeof(TransData), "TransData (Graph Editor)");
+  /* For each 2d vert a 3d vector is allocated,
+   * so that they can be treated just as if they were 3d verts. */
+  tc->data_2d = MEM_callocN(tc->data_len * sizeof(TransData2D), "TransData2D (Graph Editor)");
+  tc->custom.type.data = MEM_callocN(tc->data_len * sizeof(TransDataGraph), "TransDataGraph");
+  tc->custom.type.use_free = true;
+
+  td = tc->data;
+  td2d = tc->data_2d;
+  tdg = tc->custom.type.data;
+
+  /* precompute space-conversion matrices for dealing with non-uniform scaling of Graph Editor */
+  unit_m3(mtx);
+  unit_m3(smtx);
+
+  if (ELEM(t->mode, TFM_ROTATION, TFM_RESIZE)) {
+    float xscale, yscale;
+
+    /* apply scale factors to x and y axes of space-conversion matrices */
+    UI_view2d_scale_get(v2d, &xscale, &yscale);
+
+    /* mtx is data to global (i.e. view) conversion */
+    mul_v3_fl(mtx[0], xscale);
+    mul_v3_fl(mtx[1], yscale);
+
+    /* smtx is global (i.e. view) to data conversion */
+    if (IS_EQF(xscale, 0.0f) == 0) {
+      mul_v3_fl(smtx[0], 1.0f / xscale);
+    }
+    if (IS_EQF(yscale, 0.0f) == 0) {
+      mul_v3_fl(smtx[1], 1.0f / yscale);
+    }
+  }
+
+  /* loop 2: build transdata arrays */
+  for (ale = anim_data.first; ale; ale = ale->next) {
+    AnimData *adt = ANIM_nla_mapping_get(&ac, ale);
+    FCurve *fcu = (FCurve *)ale->key_data;
+    bool intvals = (fcu->flag & FCURVE_INT_VALUES) != 0;
+    float unit_scale, offset;
+    float cfra;
+
+    /* F-Curve may not have any keyframes */
+    if (fcu->bezt == NULL || (is_prop_edit && ale->tag == 0)) {
+      continue;
+    }
+
+    /* convert current-frame to action-time (slightly less accurate, especially under
+     * higher scaling ratios, but is faster than converting all points)
+     */
+    if (adt) {
+      cfra = BKE_nla_tweakedit_remap(adt, (float)CFRA, NLATIME_CONVERT_UNMAP);
+    }
+    else {
+      cfra = (float)CFRA;
+    }
+
+    unit_scale = ANIM_unit_mapping_get_factor(
+        ac.scene, ale->id, ale->key_data, anim_map_flag, &offset);
+
+    /* only include BezTriples whose 'keyframe' occurs on the same side
+     * of the current frame as mouse (if applicable) */
+    for (i = 0, bezt = fcu->bezt; i < fcu->totvert; i++, bezt++) {
+      if (FrameOnMouseSide(t->frame_side, bezt->vec[1][0], cfra)) {
+        const bool sel2 = (bezt->f2 & SELECT) != 0;
+        const bool sel1 = use_handle ? (bezt->f1 & SELECT) != 0 : sel2;
+        const bool sel3 = use_handle ? (bezt->f3 & SELECT) != 0 : sel2;
+
+        TransDataCurveHandleFlags *hdata = NULL;
+        /* short h1=1, h2=1; */ /* UNUSED */
+
+        if (is_prop_edit) {
+          bool is_sel = (sel2 || sel1 || sel3);
+          /* we always select all handles for proportional editing if central handle is selected */
+          initTransDataCurveHandles(td, bezt);
+          bezt_to_transdata(td++,
+                            td2d++,
+                            tdg++,
+                            adt,
+                            bezt,
+                            0,
+                            is_sel,
+                            true,
+                            intvals,
+                            mtx,
+                            smtx,
+                            unit_scale,
+                            offset);
+          initTransDataCurveHandles(td, bezt);
+          bezt_to_transdata(td++,
+                            td2d++,
+                            tdg++,
+                            adt,
+                            bezt,
+                            1,
+                            is_sel,
+                            false,
+                            intvals,
+                            mtx,
+                            smtx,
+                            unit_scale,
+                            offset);
+          initTransDataCurveHandles(td, bezt);
+          bezt_to_transdata(td++,
+                            td2d++,
+                            tdg++,
+                            adt,
+                            bezt,
+                            2,
+                            is_sel,
+                            true,
+                            intvals,
+                            mtx,
+                            smtx,
+                            unit_scale,
+                            offset);
+        }
+        else {
+          /* only include handles if selected, irrespective of the interpolation modes.
+           * also, only treat handles specially if the center point isn't selected.
+           */
+          if (!is_translation_mode || !(sel2)) {
+            if (sel1) {
+              hdata = initTransDataCurveHandles(td, bezt);
+              bezt_to_transdata(td++,
+                                td2d++,
+                                tdg++,
+                                adt,
+                                bezt,
+                                0,
+                                sel1,
+                                true,
+                                intvals,
+                                mtx,
+                                smtx,
+                                unit_scale,
+                                offset);
+            }
+            else {
+              /* h1 = 0; */ /* UNUSED */
+            }
+
+            if (sel3) {
+              if (hdata == NULL) {
+                hdata = initTransDataCurveHandles(td, bezt);
+              }
+              bezt_to_transdata(td++,
+                                td2d++,
+                                tdg++,
+                                adt,
+                                bezt,
+                                2,
+                                sel3,
+                                true,
+                                intvals,
+                                mtx,
+                                smtx,
+                                unit_scale,
+                                offset);
+            }
+            else {
+              /* h2 = 0; */ /* UNUSED */
+            }
+          }
+
+          /* only include main vert if selected */
+          if (sel2 && !use_local_center) {
+            /* move handles relative to center */
+            if (is_translation_mode) {
+              if (sel1) {
+                td->flag |= TD_MOVEHANDLE1;
+              }
+              if (sel3) {
+                td->flag |= TD_MOVEHANDLE2;
+              }
+            }
+
+            /* if handles were not selected, store their selection status */
+            if (!(sel1) || !(sel3)) {
+              if (hdata == NULL) {
+                hdata = initTransDataCurveHandles(td, bezt);
+              }
+            }
+
+            bezt_to_transdata(td++,
+                              td2d++,
+                              tdg++,
+                              adt,
+                              bezt,
+                              1,
+                              sel2,
+                              false,
+                              intvals,
+                              mtx,
+                              smtx,
+                              unit_scale,
+                              offset);
+          }
+          /* Special hack (must be done after #initTransDataCurveHandles(),
+           * as that stores handle settings to restore...):
+           *
+           * - Check if we've got entire BezTriple selected and we're scaling/rotating that point,
+           *   then check if we're using auto-handles.
+           * - If so, change them auto-handles to aligned handles so that handles get affected too
+           */
+          if (ELEM(bezt->h1, HD_AUTO, HD_AUTO_ANIM) && ELEM(bezt->h2, HD_AUTO, HD_AUTO_ANIM) &&
+              ELEM(t->mode, TFM_ROTATION, TFM_RESIZE)) {
+            if (hdata && (sel1) && (sel3)) {
+              bezt->h1 = HD_ALIGN;
+              bezt->h2 = HD_ALIGN;
+            }
+          }
+        }
+      }
+    }
+
+    /* Sets handles based on the selection */
+    testhandles_fcurve(fcu, use_handle);
+  }
+
+  if (is_prop_edit) {
+    /* loop 2: build transdata arrays */
+    td = tc->data;
+
+    for (ale = anim_data.first; ale; ale = ale->next) {
+      AnimData *adt = ANIM_nla_mapping_get(&ac, ale);
+      FCurve *fcu = (FCurve *)ale->key_data;
+      TransData *td_start = td;
+      float cfra;
+
+      /* F-Curve may not have any keyframes */
+      if (fcu->bezt == NULL || (ale->tag == 0)) {
+        continue;
+      }
+
+      /* convert current-frame to action-time (slightly less accurate, especially under
+       * higher scaling ratios, but is faster than converting all points)
+       */
+      if (adt) {
+        cfra = BKE_nla_tweakedit_remap(adt, (float)CFRA, NLATIME_CONVERT_UNMAP);
+      }
+      else {
+        cfra = (float)CFRA;
+      }
+
+      /* only include BezTriples whose 'keyframe' occurs on the
+       * same side of the current frame as mouse (if applicable) */
+      for (i = 0, bezt = fcu->bezt; i < fcu->totvert; i++, bezt++) {
+        if (FrameOnMouseSide(t->frame_side, bezt->vec[1][0], cfra)) {
+          const bool sel2 = (bezt->f2 & SELECT) != 0;
+          const bool sel1 = use_handle ? (bezt->f1 & SELECT) != 0 : sel2;
+          const bool sel3 = use_handle ? (bezt->f3 & SELECT) != 0 : sel2;
+
+          if (sel1 || sel2) {
+            td->dist = td->rdist = 0.0f;
+          }
+          else {
+            graph_key_shortest_dist(t, fcu, td_start, td, cfra, use_handle);
+          }
+          td++;
+
+          if (sel2) {
+            td->dist = td->rdist = 0.0f;
+          }
+          else {
+            graph_key_shortest_dist(t, fcu, td_start, td, cfra, use_handle);
+          }
+          td++;
+
+          if (sel3 || sel2) {
+            td->dist = td->rdist = 0.0f;
+          }
+          else {
+            graph_key_shortest_dist(t, fcu, td_start, td, cfra, use_handle);
+          }
+          td++;
+        }
+      }
+    }
+  }
+
+  /* cleanup temp list */
+  ANIM_animdata_freelist(&anim_data);
+}
+
+/** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name Graph Editor Transform Flush
+ *
+ * \{ */
+
+/* this function is called on recalcData to apply the transforms applied
+ * to the transdata on to the actual keyframe data
+ */
+void flushTransGraphData(TransInfo *t)
+{
+  SpaceGraph *sipo = (SpaceGraph *)t->sa->spacedata.first;
+  TransData *td;
+  TransData2D *td2d;
+  TransDataGraph *tdg;
+  Scene *scene = t->scene;
+  double secf = FPS;
+  int a;
+
+  TransDataContainer *tc = TRANS_DATA_CONTAINER_FIRST_SINGLE(t);
+
+  /* flush to 2d vector from internally used 3d vector */
+  for (a = 0, td = tc->data, td2d = tc->data_2d, tdg = tc->custom.type.data; a < tc->data_len;
+       a++, td++, td2d++, tdg++) {
+    /* pointers to relevant AnimData blocks are stored in the td->extra pointers */
+    AnimData *adt = (AnimData *)td->extra;
+
+    float inv_unit_scale = 1.0f / tdg->unit_scale;
+
+    /* handle snapping for time values
+     * - we should still be in NLA-mapping timespace
+     * - only apply to keyframes (but never to handles)
+     * - don't do this when canceling, or else these changes won't go away
+     */
+    if ((t->state != TRANS_CANCEL) && (td->flag & TD_NOTIMESNAP) == 0) {
+      switch (sipo->autosnap) {
+        case SACTSNAP_FRAME: /* snap to nearest frame */
+          td2d->loc[0] = floor((double)td2d->loc[0] + 0.5);
+          break;
+
+        case SACTSNAP_SECOND: /* snap to nearest second */
+          td2d->loc[0] = floor(((double)td2d->loc[0] / secf) + 0.5) * secf;
+          break;
+
+        case SACTSNAP_MARKER: /* snap to nearest marker */
+          td2d->loc[0] = (float)ED_markers_find_nearest_marker_time(&t->scene->markers,
+                                                                    td2d->loc[0]);
+          break;
+      }
+    }
+
+    /* we need to unapply the nla-mapping from the time in some situations */
+    if (adt) {
+      td2d->loc2d[0] = BKE_nla_tweakedit_remap(adt, td2d->loc[0], NLATIME_CONVERT_UNMAP);
+    }
+    else {
+      td2d->loc2d[0] = td2d->loc[0];
+    }
+
+    /** Time-stepping auto-snapping modes don't get applied for Graph Editor transforms,
+     * as these use the generic transform modes which don't account for this sort of thing.
+     * These ones aren't affected by NLA mapping, so we do this after the conversion...
+     *
+     * \note We also have to apply to td->loc,
+     * as that's what the handle-adjustment step below looks to,
+     * otherwise we get "swimming handles".
+     *
+     * \note We don't do this when canceling transforms, or else these changes don't go away.
+     */
+    if ((t->state != TRANS_CANCEL) && (td->flag & TD_NOTIMESNAP) == 0 &&
+        ELEM(sipo->autosnap, SACTSNAP_STEP, SACTSNAP_TSTEP)) {
+      switch (sipo->autosnap) {
+        case SACTSNAP_STEP: /* frame step */
+          td2d->loc2d[0] = floor((double)td2d->loc[0] + 0.5);
+          td->loc[0] = floor((double)td->loc[0] + 0.5);
+          break;
+
+        case SACTSNAP_TSTEP: /* second step */
+          /* XXX: the handle behavior in this case is still not quite right... */
+          td2d->loc[0] = floor(((double)td2d->loc[0] / secf) + 0.5) * secf;
+          td->loc[0] = floor(((double)td->loc[0] / secf) + 0.5) * secf;
+          break;
+      }
+    }
+
+    /* if int-values only, truncate to integers */
+    if (td->flag & TD_INTVALUES) {
+      td2d->loc2d[1] = floorf(td2d->loc[1] * inv_unit_scale - tdg->offset + 0.5f);
+    }
+    else {
+      td2d->loc2d[1] = td2d->loc[1] * inv_unit_scale - tdg->offset;
+    }
+
+    if ((td->flag & TD_MOVEHANDLE1) && td2d->h1) {
+      td2d->h1[0] = td2d->ih1[0] + td->loc[0] - td->iloc[0];
+      td2d->h1[1] = td2d->ih1[1] + (td->loc[1] - td->iloc[1]) * inv_unit_scale;
+    }
+
+    if ((td->flag & TD_MOVEHANDLE2) && td2d->h2) {
+      td2d->h2[0] = td2d->ih2[0] + td->loc[0] - td->iloc[0];
+      td2d->h2[1] = td2d->ih2[1] + (td->loc[1] - td->iloc[1]) * inv_unit_scale;
+    }
+  }
+}
+
+/** \} */