- split {curve,lattice,armature}_deform_verts out of mesh_deform

 - removed mesh_deform (merge into mesh_modifier)
 - switch python lattice_apply function to use object_apply_deform,
   this isn't exactly equivalent but the python system shouldn't
   have been calling that deep into the kernel anyway.

New feature: Modifier stack
 - added Object.modifiers (list of ModifierData elements)
 - added DNA_modifier_types.h
     o contains type definition for the file data for the various
       modifier types
 - added BKE_modifier.h
     o contains modifierType_get_info (access to modifier type registry)
     o structs and defines for runtime modifier usage
 - updated mesh_calc_modifiers to evaluate modifier stack (note that
   for the time being it also evaluates the old style modifiers so files
   should load and work as normal).
 - add file handling modifier code (todo: don't replicate on object copy)
 - add modifier stack UI code (lives in object panel)


Only real new feature at the moment is that you can apply lattices and
curves *after* a subdivision surface which was never possible before.

Todo:
 - DEP graph updating does not work correctly yet, so you generally have
   to tab cycle to see results.
 - editmode calculation does not use modifier stack.
 - bug fixes (there must be a few in there somewhere)

1 files changed, 116 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_modifier.h b/source/blender/blenkernel/BKE_modifier.h
new file mode 100644
index 00000000000..651eb781fe7
--- /dev/null
+++ b/source/blender/blenkernel/BKE_modifier.h
@@ -0,0 +1,116 @@
+/**
+ *	
+ * $$ 
+ *
+ * ***** BEGIN GPL/BL DUAL 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. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+#ifndef BKE_MODIFIER_H
+#define BKE_MODIFIER_H
+
+struct DerivedMesh;
+struct ModifierData;
+struct Object;
+
+typedef enum {
+		/* Should not be used, only for None modifier type */
+	eModifierTypeType_None,
+
+		/* Modifier only does deformation, implies that modifier
+		 * type should have a valid deformVerts function. OnlyDeform
+		 * style modifiers implicitly accept either mesh or CV
+		 * input but should still declare flags appropriately.
+		 */
+	eModifierTypeType_OnlyDeform,
+
+	eModifierTypeType_Constructive,
+	eModifierTypeType_Nonconstructive,
+} ModifierTypeType;
+
+typedef enum {
+	eModifierTypeFlag_AcceptsMesh = (1<<0),
+	eModifierTypeFlag_AcceptsCVs = (1<<1),
+	eModifierTypeFlag_SupportsMapping = (1<<2),
+	eModifierTypeFlag_RequiresObject = (1<<3),
+} ModifierTypeFlag;
+
+typedef struct ModifierTypeInfo {
+	char name[32], structName[32];
+	ModifierTypeType type;
+	ModifierTypeFlag flags;
+
+		/* Create new instance data for this modifier type.
+		 * 
+		 * This function must be present.
+		 */
+	struct ModifierData *(*allocData)(void);
+
+		/* Return a boolean value indicating if this modifier is able to be calculated
+		 * based on the modifier data. This is *not* regarding the md->flag, that is
+		 * tested by the system, this is just if the data validates (for example, a
+		 * lattice will return false if the lattice object is not defined).
+		 *
+		 * This function must be present.
+		 */
+	int (*isDisabled)(struct ModifierData *md);
+
+		/* Only for deform types, should apply the deformation
+		 * to the given vertex array. Object is guaranteed to be
+		 * non-NULL.
+		 */
+	void (*deformVerts)(struct ModifierData *md, struct Object *ob, float (*vertexCos)[3], int numVerts);
+
+		/* For non-deform types: apply the modifier and return a new derived
+		 * data object (type is dependent on object type). If the _derivedData_
+		 * argument is non-NULL then the modifier should read the object data 
+		 * from the derived object instead of the _data_ object. 
+		 *
+		 * If the _vertexCos_ argument is non-NULL then the modifier should read 
+		 * the vertex coordinates from that (even if _derivedData_ is non-NULL).
+		 * The length of the _vertexCos_ array is either the number of verts in
+		 * the derived object (if non-NULL) or otherwise the number of verts in
+		 * the original object.
+		 *
+		 * The _useRenderParams_ indicates if the modifier is being applied in
+		 * the service of the renderer which may alter quality settings.
+		 *
+		 * The modifier is expected to release (or reuse) the _derivedData_ argument
+		 * if non-NULL. The modifier *MAY NOT* share the _vertexCos_ argument.
+		 *
+		 * It is possible for _ob_ to be NULL if the modifier type is not flagged
+		 * to require an object. A NULL _ob_ occurs when original coordinate data
+		 * is requested for an object.
+		 */
+	void *(*applyModifier)(struct ModifierData *md, void *data, struct Object *ob, 
+		 								void *derivedData, float (*vertexCos)[3], int useRenderParams);
+} ModifierTypeInfo;
+
+ModifierTypeInfo *modifierType_get_info(ModifierType type);
+
+#endif
+