source/blender/makesrna/intern/rna_mesh_utils.h


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143

/*
 * ***** 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.
 *
 * Contributor(s): Andrew Wiggin
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/makesrna/intern/rna_mesh_utils.h
 *  \ingroup RNA
 */
 
#ifndef __RNA_MESH_UTILS_H__
#define __RNA_MESH_UTILS_H__

/* Macros to help reduce code clutter in rna_mesh.c */

/* Define the accessors for a basic CustomDataLayer collection */
#define DEFINE_CUSTOMDATA_LAYER_COLLECTION(collection_name, customdata_type, layer_type)        \
	/* check */                                                                                 \
	static int rna_##collection_name##_check(                                                   \
	        CollectionPropertyIterator *UNUSED(iter), void *data)                               \
	{                                                                                           \
		CustomDataLayer *layer = (CustomDataLayer *)data;                                       \
		return (layer->type != layer_type);                                                     \
	}                                                                                           \
	/* begin */                                                                                 \
	static void rna_Mesh_##collection_name##s_begin(CollectionPropertyIterator *iter,           \
	                                                PointerRNA *ptr)                            \
	{                                                                                           \
		CustomData *data = rna_mesh_##customdata_type(ptr);                                     \
		if (data) {                                                                             \
			rna_iterator_array_begin(iter,                                                      \
			                         (void *)data->layers, sizeof(CustomDataLayer),             \
			                         data->totlayer, 0,                                         \
			                         rna_##collection_name##_check);                            \
		}                                                                                       \
		else {                                                                                  \
			rna_iterator_array_begin(iter, NULL, 0, 0, 0, NULL);                                \
		}                                                                                       \
	}                                                                                           \
	/* length */                                                                                \
	static int rna_Mesh_##collection_name##s_length(PointerRNA *ptr)                            \
	{                                                                                           \
		CustomData *data = rna_mesh_##customdata_type(ptr);                                     \
		return data ? CustomData_number_of_layers(data, layer_type) : 0;                        \
	}                                                                                           \
	/* index range */                                                                           \
	static void rna_Mesh_##collection_name##_index_range(                                       \
	        PointerRNA *ptr, int *min, int *max,                                                \
	        int *UNUSED(softmin), int *UNUSED(softmax))                                         \
	{                                                                                           \
		CustomData *data = rna_mesh_##customdata_type(ptr);                                     \
		*min = 0;                                                                               \
		*max = data ? CustomData_number_of_layers(data, layer_type) - 1 : 0;                    \
		*max = MAX2(0, *max);                                                                   \
	}

/* Define the accessors for special CustomDataLayers in the collection
 * (active, render, clone, stencil, etc) */
#define DEFINE_CUSTOMDATA_LAYER_COLLECTION_ACTIVEITEM(collection_name, customdata_type,         \
	                                                  layer_type, active_type, layer_rna_type)  \
	                                                                                            \
	static PointerRNA rna_Mesh_##collection_name##_##active_type##_get(PointerRNA *ptr)         \
	{                                                                                           \
		CustomData *data = rna_mesh_##customdata_type(ptr);                                     \
		CustomDataLayer *layer;                                                                 \
		if (data) {                                                                             \
			int index = CustomData_get_##active_type##_layer_index(data, layer_type);           \
			layer = (index == -1) ? NULL : &data->layers[index];                                \
		}                                                                                       \
		else {                                                                                  \
			layer = NULL;                                                                       \
			}                                                                                   \
		return rna_pointer_inherit_refine(ptr, &RNA_##layer_rna_type, layer);                   \
	}                                                                                           \
	                                                                                            \
	static void rna_Mesh_##collection_name##_##active_type##_set(PointerRNA *ptr,               \
	                                                             PointerRNA value)              \
	{                                                                                           \
		Mesh *me = rna_mesh(ptr);                                                               \
		CustomData *data = rna_mesh_##customdata_type(ptr);                                     \
		int a;                                                                                  \
		if (data) {                                                                             \
			CustomDataLayer *layer;                                                             \
			int layer_index = CustomData_get_layer_index(data, layer_type);                     \
			for (layer = data->layers + layer_index, a = 0; layer_index + a < data->totlayer; layer++, a++) { \
				if (value.data == layer) {                                                      \
					CustomData_set_layer_##active_type(data, layer_type, a);                    \
					                                                                            \
					/* keep loops in sync */                                                    \
					if (layer_type == CD_MTEXPOLY) {                                            \
						CustomData *ldata = rna_mesh_ldata_helper(me);                          \
						CustomData_set_layer_##active_type(ldata, CD_MLOOPUV, a);               \
					}                                                                           \
					BKE_mesh_update_customdata_pointers(me, true);                              \
					return;                                                                     \
				}                                                                               \
			}                                                                                   \
		}                                                                                       \
	}                                                                                           \
	                                                                                            \
	static int rna_Mesh_##collection_name##_##active_type##_index_get(PointerRNA *ptr)          \
	{                                                                                           \
		CustomData *data = rna_mesh_##customdata_type(ptr);                                     \
		if (data) {                                                                             \
			return CustomData_get_##active_type##_layer(data, layer_type);                      \
		}                                                                                       \
		else {                                                                                  \
			return 0;                                                                           \
		}                                                                                       \
	}                                                                                           \
	                                                                                            \
	static void rna_Mesh_##collection_name##_##active_type##_index_set(PointerRNA *ptr, int value) \
	{                                                                                           \
		Mesh *me = rna_mesh(ptr);                                                               \
		CustomData *data = rna_mesh_##customdata_type(ptr);                                     \
		if (data) {                                                                             \
			CustomData_set_layer_##active_type(data, layer_type, value);                        \
			/* keep loops in sync */                                                            \
			if (layer_type == CD_MTEXPOLY) {                                                    \
				CustomData *ldata = rna_mesh_ldata_helper(me);                                  \
				CustomData_set_layer_##active_type(ldata, CD_MLOOPUV, value);                   \
			}                                                                                   \
			BKE_mesh_update_customdata_pointers(me, true);                                      \
		}                                                                                       \
	}

#endif /* __RNA_MESH_UTILS_H__ */