1 files changed, 257 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/pointcloud.c b/source/blender/blenkernel/intern/pointcloud.c
new file mode 100644
index 00000000000..cc68e93a116
--- /dev/null
+++ b/source/blender/blenkernel/intern/pointcloud.c
@@ -0,0 +1,257 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/blenkernel/intern/pointcloud.c
+ *  \ingroup bke
+ */
+
+#include "MEM_guardedalloc.h"
+
+#include "DNA_defaults.h"
+#include "DNA_object_types.h"
+#include "DNA_pointcloud_types.h"
+
+#include "BLI_listbase.h"
+#include "BLI_math.h"
+#include "BLI_rand.h"
+#include "BLI_string.h"
+#include "BLI_utildefines.h"
+
+#include "BKE_animsys.h"
+#include "BKE_customdata.h"
+#include "BKE_idtype.h"
+#include "BKE_global.h"
+#include "BKE_lib_id.h"
+#include "BKE_lib_query.h"
+#include "BKE_lib_remap.h"
+#include "BKE_main.h"
+#include "BKE_modifier.h"
+#include "BKE_object.h"
+#include "BKE_pointcloud.h"
+
+#include "BLT_translation.h"
+
+#include "DEG_depsgraph_query.h"
+
+/* PointCloud datablock */
+
+static void pointcloud_random(PointCloud *pointcloud)
+{
+  pointcloud->totpoint = 400;
+  CustomData_realloc(&pointcloud->pdata, pointcloud->totpoint);
+  BKE_pointcloud_update_customdata_pointers(pointcloud);
+
+  RNG *rng = BLI_rng_new(0);
+
+  for (int i = 0; i < pointcloud->totpoint; i++) {
+    pointcloud->co[i][0] = 2.0f * BLI_rng_get_float(rng) - 1.0f;
+    pointcloud->co[i][1] = 2.0f * BLI_rng_get_float(rng) - 1.0f;
+    pointcloud->co[i][2] = 2.0f * BLI_rng_get_float(rng) - 1.0f;
+    pointcloud->radius[i] = 0.05f * BLI_rng_get_float(rng);
+  }
+
+  BLI_rng_free(rng);
+}
+
+static void pointcloud_init_data(ID *id)
+{
+  PointCloud *pointcloud = (PointCloud *)id;
+  BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(pointcloud, id));
+
+  MEMCPY_STRUCT_AFTER(pointcloud, DNA_struct_default_get(PointCloud), id);
+
+  CustomData_reset(&pointcloud->pdata);
+  CustomData_add_layer(&pointcloud->pdata, CD_LOCATION, CD_CALLOC, NULL, pointcloud->totpoint);
+  CustomData_add_layer(&pointcloud->pdata, CD_RADIUS, CD_CALLOC, NULL, pointcloud->totpoint);
+  BKE_pointcloud_update_customdata_pointers(pointcloud);
+
+  pointcloud_random(pointcloud);
+}
+
+void *BKE_pointcloud_add(Main *bmain, const char *name)
+{
+  PointCloud *pointcloud = BKE_libblock_alloc(bmain, ID_PT, name, 0);
+
+  pointcloud_init_data(&pointcloud->id);
+
+  return pointcloud;
+}
+
+static void pointcloud_copy_data(Main *UNUSED(bmain), ID *id_dst, const ID *id_src, const int flag)
+{
+  PointCloud *pointcloud_dst = (PointCloud *)id_dst;
+  const PointCloud *pointcloud_src = (const PointCloud *)id_src;
+  pointcloud_dst->mat = MEM_dupallocN(pointcloud_dst->mat);
+
+  const eCDAllocType alloc_type = (flag & LIB_ID_COPY_CD_REFERENCE) ? CD_REFERENCE : CD_DUPLICATE;
+  CustomData_copy(&pointcloud_src->pdata,
+                  &pointcloud_dst->pdata,
+                  CD_MASK_ALL,
+                  alloc_type,
+                  pointcloud_dst->totpoint);
+  BKE_pointcloud_update_customdata_pointers(pointcloud_dst);
+}
+
+PointCloud *BKE_pointcloud_copy(Main *bmain, const PointCloud *pointcloud)
+{
+  PointCloud *pointcloud_copy;
+  BKE_id_copy(bmain, &pointcloud->id, (ID **)&pointcloud_copy);
+  return pointcloud_copy;
+}
+
+static void pointcloud_make_local(Main *bmain, ID *id, const int flags)
+{
+  BKE_lib_id_make_local_generic(bmain, id, flags);
+}
+
+static void pointcloud_free_data(ID *id)
+{
+  PointCloud *pointcloud = (PointCloud *)id;
+  BKE_animdata_free(&pointcloud->id, false);
+  BKE_pointcloud_batch_cache_free(pointcloud);
+  CustomData_free(&pointcloud->pdata, pointcloud->totpoint);
+  MEM_SAFE_FREE(pointcloud->mat);
+}
+
+IDTypeInfo IDType_ID_PT = {
+    .id_code = ID_PT,
+    .id_filter = FILTER_ID_PT,
+    .main_listbase_index = INDEX_ID_PT,
+    .struct_size = sizeof(PointCloud),
+    .name = "PointCloud",
+    .name_plural = "pointclouds",
+    .translation_context = BLT_I18NCONTEXT_ID_POINTCLOUD,
+    .flags = 0,
+
+    .init_data = pointcloud_init_data,
+    .copy_data = pointcloud_copy_data,
+    .free_data = pointcloud_free_data,
+    .make_local = pointcloud_make_local,
+};
+
+BoundBox *BKE_pointcloud_boundbox_get(Object *ob)
+{
+  BLI_assert(ob->type == OB_POINTCLOUD);
+  PointCloud *pointcloud = ob->data;
+
+  if (ob->runtime.bb != NULL && (ob->runtime.bb->flag & BOUNDBOX_DIRTY) == 0) {
+    return ob->runtime.bb;
+  }
+
+  if (ob->runtime.bb == NULL) {
+    ob->runtime.bb = MEM_callocN(sizeof(BoundBox), "pointcloud boundbox");
+
+    float min[3], max[3];
+    INIT_MINMAX(min, max);
+
+    float(*pointcloud_co)[3] = pointcloud->co;
+    float *pointcloud_radius = pointcloud->radius;
+    for (int a = 0; a < pointcloud->totpoint; a++) {
+      float *co = pointcloud_co[a];
+      float radius = (pointcloud_radius) ? pointcloud_radius[a] : 0.0f;
+      float co_min[3] = {co[0] - radius, co[1] - radius, co[2] - radius};
+      float co_max[3] = {co[0] + radius, co[1] + radius, co[2] + radius};
+      DO_MIN(co_min, min);
+      DO_MAX(co_max, max);
+    }
+
+    BKE_boundbox_init_from_minmax(ob->runtime.bb, min, max);
+  }
+
+  return ob->runtime.bb;
+}
+
+void BKE_pointcloud_update_customdata_pointers(PointCloud *pointcloud)
+{
+  pointcloud->co = CustomData_get_layer(&pointcloud->pdata, CD_LOCATION);
+  pointcloud->radius = CustomData_get_layer(&pointcloud->pdata, CD_RADIUS);
+}
+
+/* Dependency Graph */
+
+PointCloud *BKE_pointcloud_new_for_eval(const PointCloud *pointcloud_src, int totpoint)
+{
+  PointCloud *pointcloud_dst = BKE_id_new_nomain(ID_HA, NULL);
+
+  STRNCPY(pointcloud_dst->id.name, pointcloud_src->id.name);
+  pointcloud_dst->mat = MEM_dupallocN(pointcloud_src->mat);
+  pointcloud_dst->totcol = pointcloud_src->totcol;
+
+  pointcloud_dst->totpoint = totpoint;
+  CustomData_copy(
+      &pointcloud_src->pdata, &pointcloud_dst->pdata, CD_MASK_ALL, CD_CALLOC, totpoint);
+  BKE_pointcloud_update_customdata_pointers(pointcloud_dst);
+
+  return pointcloud_dst;
+}
+
+PointCloud *BKE_pointcloud_copy_for_eval(struct PointCloud *pointcloud_src, bool reference)
+{
+  int flags = LIB_ID_COPY_LOCALIZE;
+
+  if (reference) {
+    flags |= LIB_ID_COPY_CD_REFERENCE;
+  }
+
+  PointCloud *result;
+  BKE_id_copy_ex(NULL, &pointcloud_src->id, (ID **)&result, flags);
+  return result;
+}
+
+static PointCloud *pointcloud_evaluate_modifiers(struct Depsgraph *UNUSED(depsgraph),
+                                                 struct Scene *UNUSED(scene),
+                                                 Object *UNUSED(object),
+                                                 PointCloud *pointcloud_input)
+{
+  return pointcloud_input;
+}
+
+void BKE_pointcloud_data_update(struct Depsgraph *depsgraph, struct Scene *scene, Object *object)
+{
+  /* Free any evaluated data and restore original data. */
+  BKE_object_free_derived_caches(object);
+
+  /* Evaluate modifiers. */
+  PointCloud *pointcloud = object->data;
+  PointCloud *pointcloud_eval = pointcloud_evaluate_modifiers(
+      depsgraph, scene, object, pointcloud);
+
+  /* Assign evaluated object. */
+  const bool is_owned = (pointcloud != pointcloud_eval);
+  BKE_object_eval_assign_data(object, &pointcloud_eval->id, is_owned);
+}
+
+/* Draw Cache */
+void (*BKE_pointcloud_batch_cache_dirty_tag_cb)(PointCloud *pointcloud, int mode) = NULL;
+void (*BKE_pointcloud_batch_cache_free_cb)(PointCloud *pointcloud) = NULL;
+
+void BKE_pointcloud_batch_cache_dirty_tag(PointCloud *pointcloud, int mode)
+{
+  if (pointcloud->batch_cache) {
+    BKE_pointcloud_batch_cache_dirty_tag_cb(pointcloud, mode);
+  }
+}
+
+void BKE_pointcloud_batch_cache_free(PointCloud *pointcloud)
+{
+  if (pointcloud->batch_cache) {
+    BKE_pointcloud_batch_cache_free_cb(pointcloud);
+  }
+}