Implemented dynamic and multidimensional array support in RNA.

Example code: http://www.pasteall.org/7332/c.
New API functions: http://www.pasteall.org/7330/c.

Maximum number of dimensions is currently limited to 3, but can be increased arbitrarily if needed.

What this means for ID property access:

* MeshFace.verts - dynamic array, size 3 or 4 depending on MFace.v4
* MeshTextureFace.uv - dynamic, 2-dimensional array, size depends on MFace.v4
* Object.matrix - 2-dimensional array

What this means for functions:

* more intuitive API possibility, for example:
  Mesh.add_vertices([(x, y, z), (x, y, z), ...])
  Mesh.add_faces([(1, 2, 3), (4, 5, 6), ...])

Python part is not complete yet, e.g. it is possible to:

MeshFace.verts = (1, 2, 3) # even if Mesh.verts is (1, 2, 3, 4) and vice-versa
MeshTextureFace.uv = [(0.0, 0.0)] * 4 # only if a corresponding MFace is a quad

but the following won't work:

MeshTextureFace.uv[3] = (0.0, 0.0) # setting uv[3] modifies MTFace.uv[1][0] instead of MTFace.uv[3]

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_internal_types.h b/source/blender/makesrna/intern/rna_internal_types.h
index 12bd876ce52..d706fd5ac19 100644
--- a/source/blender/makesrna/intern/rna_internal_types.h
+++ b/source/blender/makesrna/intern/rna_internal_types.h
@@ -40,6 +40,7 @@ struct IDProperty;
 struct GHash;
 
 #define RNA_MAX_ARRAY 32
+#define RNA_MAX_ARRAY_DIMENSION 3
 
 /* Function Callbacks */
 
@@ -49,6 +50,8 @@ typedef struct IDProperty* (*IDPropertiesFunc)(struct PointerRNA *ptr, int creat
 typedef struct StructRNA *(*StructRefineFunc)(struct PointerRNA *ptr);
 typedef char *(*StructPathFunc)(struct PointerRNA *ptr);
 
+typedef int (*PropArrayLengthGetFunc)(struct PointerRNA *ptr);
+typedef int (*PropArrayLengthSetFunc)(struct PointerRNA *ptr, int length);
 typedef int (*PropBooleanGetFunc)(struct PointerRNA *ptr);
 typedef void (*PropBooleanSetFunc)(struct PointerRNA *ptr, int value);
 typedef void (*PropBooleanArrayGetFunc)(struct PointerRNA *ptr, int *values);
@@ -131,6 +134,14 @@ struct PropertyRNA {
 	PropertySubType subtype;
 	/* if an array this is > 0, specifying the length */
 	unsigned int arraylength;
+	/* these, if non-NULL, override arraylength */
+	PropArrayLengthGetFunc getlength;
+	/* if NULL, length cannot be changed by a user */
+	PropArrayLengthSetFunc setlength;
+	/* used only for dynamic arrays for now, default 1 */
+	unsigned short arraydimension;
+	/* dimension sizes for dimensions greater than 1, first dimension size is not specified */
+	unsigned short dimsize[RNA_MAX_ARRAY_DIMENSION - 1];
 	
 	/* callback for updates on change */
 	UpdateFunc update;