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, 195 insertions, 0 deletions

diff --git a/source/blender/editors/transform/transform_convert_node.c b/source/blender/editors/transform/transform_convert_node.c
new file mode 100644
index 00000000000..41e3a79e4c9
--- /dev/null
+++ b/source/blender/editors/transform/transform_convert_node.c
@@ -0,0 +1,195 @@
+/*
+ * 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_space_types.h"
+
+#include "MEM_guardedalloc.h"
+
+#include "BLI_math.h"
+
+#include "BKE_context.h"
+#include "BKE_node.h"
+#include "BKE_report.h"
+
+#include "ED_node.h"
+
+#include "UI_interface.h"
+
+#include "transform.h"
+#include "transform_convert.h"
+
+/* -------------------------------------------------------------------- */
+/** \name Node Transform Creation
+ *
+ * \{ */
+
+/* transcribe given node into TransData2D for Transforming */
+static void NodeToTransData(TransData *td, TransData2D *td2d, bNode *node, const float dpi_fac)
+{
+  float locx, locy;
+
+  /* account for parents (nested nodes) */
+  if (node->parent) {
+    nodeToView(node->parent, node->locx, node->locy, &locx, &locy);
+  }
+  else {
+    locx = node->locx;
+    locy = node->locy;
+  }
+
+  /* use top-left corner as the transform origin for nodes */
+  /* weirdo - but the node system is a mix of free 2d elements and dpi sensitive UI */
+#ifdef USE_NODE_CENTER
+  td2d->loc[0] = (locx * dpi_fac) + (BLI_rctf_size_x(&node->totr) * +0.5f);
+  td2d->loc[1] = (locy * dpi_fac) + (BLI_rctf_size_y(&node->totr) * -0.5f);
+#else
+  td2d->loc[0] = locx * dpi_fac;
+  td2d->loc[1] = locy * dpi_fac;
+#endif
+  td2d->loc[2] = 0.0f;
+  td2d->loc2d = td2d->loc; /* current location */
+
+  td->flag = 0;
+
+  td->loc = td2d->loc;
+  copy_v3_v3(td->iloc, td->loc);
+  /* use node center instead of origin (top-left corner) */
+  td->center[0] = td2d->loc[0];
+  td->center[1] = td2d->loc[1];
+  td->center[2] = 0.0f;
+
+  memset(td->axismtx, 0, sizeof(td->axismtx));
+  td->axismtx[2][2] = 1.0f;
+
+  td->ext = NULL;
+  td->val = NULL;
+
+  td->flag |= TD_SELECTED;
+  td->dist = 0.0;
+
+  unit_m3(td->mtx);
+  unit_m3(td->smtx);
+
+  td->extra = node;
+}
+
+static bool is_node_parent_select(bNode *node)
+{
+  while ((node = node->parent)) {
+    if (node->flag & NODE_TRANSFORM) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void createTransNodeData(bContext *UNUSED(C), TransInfo *t)
+{
+  const float dpi_fac = UI_DPI_FAC;
+  TransData *td;
+  TransData2D *td2d;
+  SpaceNode *snode = t->sa->spacedata.first;
+  bNode *node;
+
+  TransDataContainer *tc = TRANS_DATA_CONTAINER_FIRST_SINGLE(t);
+
+  tc->data_len = 0;
+
+  if (!snode->edittree) {
+    return;
+  }
+
+  /* nodes dont support PET and probably never will */
+  t->flag &= ~T_PROP_EDIT_ALL;
+
+  /* set transform flags on nodes */
+  for (node = snode->edittree->nodes.first; node; node = node->next) {
+    if (node->flag & NODE_SELECT && is_node_parent_select(node) == false) {
+      node->flag |= NODE_TRANSFORM;
+      tc->data_len++;
+    }
+    else {
+      node->flag &= ~NODE_TRANSFORM;
+    }
+  }
+
+  td = tc->data = MEM_callocN(tc->data_len * sizeof(TransData), "TransNode TransData");
+  td2d = tc->data_2d = MEM_callocN(tc->data_len * sizeof(TransData2D), "TransNode TransData2D");
+
+  for (node = snode->edittree->nodes.first; node; node = node->next) {
+    if (node->flag & NODE_TRANSFORM) {
+      NodeToTransData(td++, td2d++, node, dpi_fac);
+    }
+  }
+}
+
+/** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name Node Transform Creation
+ *
+ * \{ */
+
+void flushTransNodes(TransInfo *t)
+{
+  const float dpi_fac = UI_DPI_FAC;
+
+  FOREACH_TRANS_DATA_CONTAINER (t, tc) {
+    int a;
+    TransData *td;
+    TransData2D *td2d;
+
+    applyGridAbsolute(t);
+
+    /* flush to 2d vector from internally used 3d vector */
+    for (a = 0, td = tc->data, td2d = tc->data_2d; a < tc->data_len; a++, td++, td2d++) {
+      bNode *node = td->extra;
+      float locx, locy;
+
+      /* weirdo - but the node system is a mix of free 2d elements and dpi sensitive UI */
+#ifdef USE_NODE_CENTER
+      locx = (td2d->loc[0] - (BLI_rctf_size_x(&node->totr)) * +0.5f) / dpi_fac;
+      locy = (td2d->loc[1] - (BLI_rctf_size_y(&node->totr)) * -0.5f) / dpi_fac;
+#else
+      locx = td2d->loc[0] / dpi_fac;
+      locy = td2d->loc[1] / dpi_fac;
+#endif
+
+      /* account for parents (nested nodes) */
+      if (node->parent) {
+        nodeFromView(node->parent, locx, locy, &node->locx, &node->locy);
+      }
+      else {
+        node->locx = locx;
+        node->locy = locy;
+      }
+    }
+
+    /* handle intersection with noodles */
+    if (tc->data_len == 1) {
+      ED_node_link_intersect_test(t->sa, 1);
+    }
+  }
+}
+
+/** \} */