1 files changed, 113 insertions, 0 deletions
diff --git a/source/blender/editors/lattice/editlattice_undo.c b/source/blender/editors/lattice/editlattice_undo.c
new file mode 100644
index 00000000000..aa817928f92
--- /dev/null
+++ b/source/blender/editors/lattice/editlattice_undo.c
@@ -0,0 +1,113 @@
+/*
+ * ***** 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.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * Contributor(s): Blender Foundation
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/editors/lattice/editlattice_undo.c
+ *  \ingroup edlattice
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include "MEM_guardedalloc.h"
+
+#include "BLI_utildefines.h"
+
+#include "DNA_curve_types.h"
+#include "DNA_lattice_types.h"
+#include "DNA_object_types.h"
+#include "DNA_scene_types.h"
+
+#include "BKE_context.h"
+
+#include "ED_lattice.h"
+#include "ED_util.h"
+
+#include "lattice_intern.h"
+
+typedef struct UndoLattice {
+	BPoint *def;
+	int pntsu, pntsv, pntsw, actbp;
+} UndoLattice;
+
+static void undoLatt_to_editLatt(void *data, void *edata, void *UNUSED(obdata))
+{
+	UndoLattice *ult = (UndoLattice *)data;
+	EditLatt *editlatt = (EditLatt *)edata;
+	int a = editlatt->latt->pntsu * editlatt->latt->pntsv * editlatt->latt->pntsw;
+
+	memcpy(editlatt->latt->def, ult->def, a * sizeof(BPoint));
+	editlatt->latt->actbp = ult->actbp;
+}
+
+static void *editLatt_to_undoLatt(void *edata, void *UNUSED(obdata))
+{
+	UndoLattice *ult = MEM_callocN(sizeof(UndoLattice), "UndoLattice");
+	EditLatt *editlatt = (EditLatt *)edata;
+
+	ult->def = MEM_dupallocN(editlatt->latt->def);
+	ult->pntsu = editlatt->latt->pntsu;
+	ult->pntsv = editlatt->latt->pntsv;
+	ult->pntsw = editlatt->latt->pntsw;
+	ult->actbp = editlatt->latt->actbp;
+
+	return ult;
+}
+
+static void free_undoLatt(void *data)
+{
+	UndoLattice *ult = (UndoLattice *)data;
+
+	if (ult->def) MEM_freeN(ult->def);
+	MEM_freeN(ult);
+}
+
+static int validate_undoLatt(void *data, void *edata)
+{
+	UndoLattice *ult = (UndoLattice *)data;
+	EditLatt *editlatt = (EditLatt *)edata;
+
+	return (ult->pntsu == editlatt->latt->pntsu &&
+	        ult->pntsv == editlatt->latt->pntsv &&
+	        ult->pntsw == editlatt->latt->pntsw);
+}
+
+static void *get_editlatt(bContext *C)
+{
+	Object *obedit = CTX_data_edit_object(C);
+
+	if (obedit && obedit->type == OB_LATTICE) {
+		Lattice *lt = obedit->data;
+		return lt->editlatt;
+	}
+
+	return NULL;
+}
+
+/* and this is all the undo system needs to know */
+void undo_push_lattice(bContext *C, const char *name)
+{
+	undo_editmode_push(C, name, get_editlatt, free_undoLatt, undoLatt_to_editLatt, editLatt_to_undoLatt, validate_undoLatt);
+}