1 files changed, 106 insertions, 0 deletions
diff --git a/source/blender/collada/collada_utils.cpp b/source/blender/collada/collada_utils.cpp
new file mode 100644
index 00000000000..0634c910e96
--- /dev/null
+++ b/source/blender/collada/collada_utils.cpp
@@ -0,0 +1,106 @@
+/**
+ * $Id$
+ *
+ * ***** 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.
+ *
+ * Contributor(s): Chingiz Dyussenov, Arystanbek Dyussenov, Nathan Letwory.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#include "COLLADAFWGeometry.h"
+#include "COLLADAFWMeshPrimitive.h"
+#include "COLLADAFWMeshVertexData.h"
+
+#include "DNA_customdata_types.h"
+#include "DNA_object_types.h"
+
+#include "BLI_math.h"
+
+#include "BKE_context.h"
+#include "BKE_customdata.h"
+#include "BKE_depsgraph.h"
+#include "BKE_object.h"
+
+#include "WM_api.h" // XXX hrm, see if we can do without this
+#include "WM_types.h"
+
+float bc_get_float_value(const COLLADAFW::FloatOrDoubleArray& array, unsigned int index)
+{
+	if (index >= array.getValuesCount())
+		return 0.0f;
+
+	if (array.getType() == COLLADAFW::MeshVertexData::DATA_TYPE_FLOAT)
+		return array.getFloatValues()->getData()[index];
+	else 
+		return array.getDoubleValues()->getData()[index];
+}
+
+// copied from /editors/object/object_relations.c
+int bc_test_parent_loop(Object *par, Object *ob)
+{
+	/* test if 'ob' is a parent somewhere in par's parents */
+	
+	if(par == NULL) return 0;
+	if(ob == par) return 1;
+	
+	return bc_test_parent_loop(par->parent, ob);
+}
+
+// a shortened version of parent_set_exec()
+// if is_parent_space is true then ob->obmat will be multiplied by par->obmat before parenting
+int bc_set_parent(Object *ob, Object *par, bContext *C, bool is_parent_space)
+{
+	Object workob;
+	Main *bmain = CTX_data_main(C);
+	Scene *sce = CTX_data_scene(C);
+	
+	if (!par || bc_test_parent_loop(par, ob))
+		return false;
+
+	ob->parent = par;
+	ob->partype = PAROBJECT;
+
+	ob->parsubstr[0] = 0;
+
+	if (is_parent_space) {
+		float mat[4][4];
+		// calc par->obmat
+		where_is_object(sce, par);
+
+		// move child obmat into world space
+		mul_m4_m4m4(mat, ob->obmat, par->obmat);
+		copy_m4_m4(ob->obmat, mat);
+	}
+	
+	// apply child obmat (i.e. decompose it into rot/loc/size)
+	object_apply_mat4(ob, ob->obmat);
+
+	// compute parentinv
+	what_does_parent(sce, ob, &workob);
+	invert_m4_m4(ob->parentinv, workob.obmat);
+
+	ob->recalc |= OB_RECALC_OB | OB_RECALC_DATA;
+	par->recalc |= OB_RECALC_OB;
+
+	DAG_scene_sort(bmain, sce);
+	DAG_ids_flush_update(bmain, 0);
+	WM_event_add_notifier(C, NC_OBJECT|ND_TRANSFORM, NULL);
+
+	return true;
+}
+