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mathutils: add freeze() method, is_frozen attr

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This allows you to make any mathutils object immutable.
This commit is contained in:
Campbell Barton
2015-02-15 11:26:31 +11:00
parent ce85aef0d9
commit a9d979c8ef
7 changed files with 157 additions and 53 deletions
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21
source/blender/python/mathutils/mathutils.h
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@@ -34,6 +34,7 @@
struct DynStr;
extern char BaseMathObject_is_wrapped_doc[];
extern char BaseMathObject_is_frozen_doc[];
extern char BaseMathObject_owner_doc[];
#define BASE_MATH_NEW(struct_name, root_type, base_type) \
@@ -43,6 +44,7 @@ extern char BaseMathObject_owner_doc[];
/* BaseMathObject.flag */
enum {
BASE_MATH_FLAG_IS_WRAP = (1 << 0),
BASE_MATH_FLAG_IS_FROZEN = (1 << 1),
};
#define BASE_MATH_FLAG_DEFAULT 0
@@ -69,6 +71,10 @@ typedef struct {
PyObject *BaseMathObject_owner_get(BaseMathObject *self, void *);
PyObject *BaseMathObject_is_wrapped_get(BaseMathObject *self, void *);
PyObject *BaseMathObject_is_frozen_get(BaseMathObject *self, void *);
extern char BaseMathObject_freeze_doc[];
PyObject *BaseMathObject_freeze(BaseMathObject *self);
int BaseMathObject_traverse(BaseMathObject *self, visitproc visit, void *arg);
int BaseMathObject_clear(BaseMathObject *self);
@@ -102,6 +108,8 @@ int _BaseMathObject_WriteCallback(BaseMathObject *self);
int _BaseMathObject_ReadIndexCallback(BaseMathObject *self, int index);
int _BaseMathObject_WriteIndexCallback(BaseMathObject *self, int index);
void _BaseMathObject_RaiseFrozenExc(const BaseMathObject *self);
/* since this is called so often avoid where possible */
#define BaseMath_ReadCallback(_self) \
(((_self)->cb_user ? _BaseMathObject_ReadCallback((BaseMathObject *)_self):0))
@@ -112,6 +120,19 @@ int _BaseMathObject_WriteIndexCallback(BaseMathObject *self, int index);
#define BaseMath_WriteIndexCallback(_self, _index) \
(((_self)->cb_user ? _BaseMathObject_WriteIndexCallback((BaseMathObject *)_self, _index):0))
/* support BASE_MATH_FLAG_IS_FROZEN */
#define BaseMath_ReadCallback_ForWrite(_self) \
(UNLIKELY((_self)->flag & BASE_MATH_FLAG_IS_FROZEN) ? \
(_BaseMathObject_RaiseFrozenExc((BaseMathObject *)_self), -1) : (BaseMath_ReadCallback(_self)))
#define BaseMath_ReadIndexCallback_ForWrite(_self, _index) \
(UNLIKELY((_self)->flag & BASE_MATH_FLAG_IS_FROZEN) ? \
(_BaseMathObject_RaiseFrozenExc((BaseMathObject *)_self), -1) : (BaseMath_ReadIndexCallback(_self, _index)))
#define BaseMath_Prepare_ForWrite(_self) \
(UNLIKELY((_self)->flag & BASE_MATH_FLAG_IS_FROZEN) ? \
(_BaseMathObject_RaiseFrozenExc((BaseMathObject *)_self), -1) : 0)
/* utility func */
int mathutils_array_parse(float *array, int array_min, int array_max, PyObject *value, const char *error_prefix);
int mathutils_array_parse_alloc(float **array, int array_min, PyObject *value, const char *error_prefix);