diff options
author | Joshua Leung <aligorith@gmail.com> | 2011-01-27 00:58:32 +0300 |
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committer | Joshua Leung <aligorith@gmail.com> | 2011-01-27 00:58:32 +0300 |
commit | 91b1efc2c53d6a457011251e5654db1bdd58ca2d (patch) | |
tree | c5939e34fdfe9d941c8a48a7277203be72e2e734 | |
parent | 4613d638a956a25830265c576cf7cf934d38eb93 (diff) |
"Bugfix" (otherwise known as another ZanQdo Feature Request)
Shape Key point data can now be animated directly. That is, you can
animate the locations that each shape key defines.
-rw-r--r-- | source/blender/makesrna/intern/rna_key.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/source/blender/makesrna/intern/rna_key.c b/source/blender/makesrna/intern/rna_key.c index d495ec5ee6b..beceb66986d 100644 --- a/source/blender/makesrna/intern/rna_key.c +++ b/source/blender/makesrna/intern/rna_key.c @@ -361,6 +361,82 @@ static void rna_Key_update_data(Main *bmain, Scene *scene, PointerRNA *ptr) } } +static KeyBlock *rna_ShapeKeyData_find_keyblock(Key *key, float *point) +{ + KeyBlock *kb; + + /* sanity checks */ + if (ELEM(NULL, key, point)) + return NULL; + + /* we'll need to manually search through the keyblocks and check + * if the point is somewhere in the middle of each block's data + */ + for (kb = key->block.first; kb; kb = kb->next) { + if (kb->data) { + float *start = (float *)kb->data; + float *end; + + /* easy cases first */ + if ((start == NULL) || (start > point)) { + /* there's no chance point is in array */ + continue; + } + else if (start == point) { + /* exact match - point is first in array */ + return kb; + } + + /* determine where end of array is + * - elemsize is in bytes, so use char* cast to get array in terms of bytes + */ + end = (float *)((char *)start + (key->elemsize * kb->totelem)); + + /* if point's address is less than the end, then it is somewhere between start and end, so in array */ + if (end > point) { + /* we've found the owner of the point data */ + return kb; + } + } + } + + return NULL; +} + +static int rna_ShapeKeyPoint_get_index(Key *key, KeyBlock *kb, float *point) +{ + /* if we frame the data array and point pointers as char*, then the difference between + * them will be in bytes. Thus, dividing through by key->elemsize (number of bytes per point) + * gives us the offset of point from start of array. + */ + char *start = (char *)kb->data; + char *pt = (char *)point; + + return (int)(pt - start) / key->elemsize; +} + +static char *rna_ShapeKeyPoint_path(PointerRNA *ptr) +{ + ID *id = (ID *)ptr->id.data; + Key *key = rna_ShapeKey_find_key(ptr->id.data); + KeyBlock *kb; + float *point = (float *)ptr->data; + + /* if we can get a key block, we can construct a path */ + kb = rna_ShapeKeyData_find_keyblock(key, point); + + if (kb) { + int index = rna_ShapeKeyPoint_get_index(key, kb, point); + + if (GS(id->name) == ID_KE) + return BLI_sprintfN("keys[\"%s\"].data[%d]", kb->name, index); + else + return BLI_sprintfN("shape_keys.keys[\"%s\"].data[%d]", kb->name, index); + } + else + return NULL; // XXX: there's really no way to resolve this... +} + #else static void rna_def_keydata(BlenderRNA *brna) @@ -370,6 +446,7 @@ static void rna_def_keydata(BlenderRNA *brna) srna= RNA_def_struct(brna, "ShapeKeyPoint", NULL); RNA_def_struct_ui_text(srna, "Shape Key Point", "Point in a shape key"); + RNA_def_struct_path_func(srna, "rna_ShapeKeyPoint_path"); prop= RNA_def_property(srna, "co", PROP_FLOAT, PROP_TRANSLATION); RNA_def_property_array(prop, 3); @@ -379,6 +456,7 @@ static void rna_def_keydata(BlenderRNA *brna) srna= RNA_def_struct(brna, "ShapeKeyCurvePoint", NULL); RNA_def_struct_ui_text(srna, "Shape Key Curve Point", "Point in a shape key for curves"); + RNA_def_struct_path_func(srna, "rna_ShapeKeyPoint_path"); /* there's nothing type specific here, so this is fine for now */ prop= RNA_def_property(srna, "co", PROP_FLOAT, PROP_TRANSLATION); RNA_def_property_array(prop, 3); @@ -393,6 +471,7 @@ static void rna_def_keydata(BlenderRNA *brna) srna= RNA_def_struct(brna, "ShapeKeyBezierPoint", NULL); RNA_def_struct_ui_text(srna, "Shape Key Bezier Point", "Point in a shape key for bezier curves"); + RNA_def_struct_path_func(srna, "rna_ShapeKeyPoint_path"); /* there's nothing type specific here, so this is fine for now */ prop= RNA_def_property(srna, "co", PROP_FLOAT, PROP_TRANSLATION); RNA_def_property_array(prop, 3); |