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.
*
* The Original Code is Copyright (C) 2006 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Bob Holcomb
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/nodes/composite/nodes/node_composite_distanceMatte.c
* \ingroup cmpnodes
*/
#include "node_composite_util.h"
/* ******************* channel Distance Matte ********************************* */
static bNodeSocketTemplate cmp_node_distance_matte_in[]={
{SOCK_RGBA, 1, "Image", 1.0f, 1.0f, 1.0f, 1.0f},
{SOCK_RGBA, 1, "Key Color", 1.0f, 1.0f, 1.0f, 1.0f},
{-1, 0, ""}
};
static bNodeSocketTemplate cmp_node_distance_matte_out[]={
{SOCK_RGBA, 0, "Image"},
{SOCK_FLOAT, 0, "Matte"},
{-1, 0, ""}
};
/* note, keyvals is passed on from caller as stack array */
/* might have been nicer as temp struct though... */
static void do_distance_matte(bNode *node, float *out, float *in)
{
NodeChroma *c= (NodeChroma *)node->storage;
float tolerence=c->t1;
float falloff=c->t2;
float distance;
float alpha;
distance=sqrt((c->key[0]-in[0])*(c->key[0]-in[0]) +
(c->key[1]-in[1])*(c->key[1]-in[1]) +
(c->key[2]-in[2])*(c->key[2]-in[2]));
copy_v3_v3(out, in);
/*make 100% transparent */
if (distance < tolerence) {
out[3]=0.0;
}
/*in the falloff region, make partially transparent */
else if (distance < falloff+tolerence) {
distance=distance-tolerence;
alpha=distance/falloff;
/*only change if more transparent than before */
if (alpha < in[3]) {
out[3]=alpha;
}
else { /* leave as before */
out[3]=in[3];
}
}
else {
out[3]=in[3];
}
}
static void node_composit_exec_distance_matte(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
{
/*
Loosely based on the Sequencer chroma key plug-in, but enhanced to work in other color spaces and
uses a different difference function (suggested in forums of vfxtalk.com).
*/
CompBuf *workbuf;
CompBuf *inbuf;
NodeChroma *c;
/*is anything connected?*/
if (out[0]->hasoutput==0 && out[1]->hasoutput==0) return;
/*must have an image imput*/
if (in[0]->data==NULL) return;
inbuf=typecheck_compbuf(in[0]->data, CB_RGBA);
c=node->storage;
workbuf=dupalloc_compbuf(inbuf);
/*use the input color*/
c->key[0]= in[1]->vec[0];
c->key[1]= in[1]->vec[1];
c->key[2]= in[1]->vec[2];
/* note, processor gets a keyvals array passed on as buffer constant */
composit1_pixel_processor(node, workbuf, workbuf, in[0]->vec, do_distance_matte, CB_RGBA);
out[0]->data=workbuf;
if (out[1]->hasoutput)
out[1]->data=valbuf_from_rgbabuf(workbuf, CHAN_A);
generate_preview(data, node, workbuf);
if (inbuf!=in[0]->data)
free_compbuf(inbuf);
}
static void node_composit_init_distance_matte(bNodeTree *UNUSED(ntree), bNode* node, bNodeTemplate *UNUSED(ntemp))
{
NodeChroma *c= MEM_callocN(sizeof(NodeChroma), "node chroma");
node->storage= c;
c->t1= 0.1f;
c->t2= 0.1f;
}
void register_node_type_cmp_distance_matte(bNodeTreeType *ttype)
{
static bNodeType ntype;
node_type_base(ttype, &ntype, CMP_NODE_DIST_MATTE, "Distance Key", NODE_CLASS_MATTE, NODE_PREVIEW|NODE_OPTIONS);
node_type_socket_templates(&ntype, cmp_node_distance_matte_in, cmp_node_distance_matte_out);
node_type_size(&ntype, 200, 80, 250);
node_type_init(&ntype, node_composit_init_distance_matte);
node_type_storage(&ntype, "NodeChroma", node_free_standard_storage, node_copy_standard_storage);
node_type_exec(&ntype, node_composit_exec_distance_matte);
nodeRegisterType(ttype, &ntype);
}
|