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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
|
/* 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.
*
* Copyright 2014, Blender Foundation.
*/
#include "COM_PlaneCornerPinOperation.h"
#include "COM_ConstantOperation.h"
namespace blender::compositor {
constexpr int LOWER_LEFT_CORNER_INDEX = 0;
constexpr int LOWER_RIGHT_CORNER_INDEX = 1;
constexpr int UPPER_RIGHT_CORNER_INDEX = 2;
constexpr int UPPER_LEFT_CORNER_INDEX = 3;
static bool check_corners(float corners[4][2])
{
int i, next, prev;
float cross = 0.0f;
for (i = 0; i < 4; i++) {
float v1[2], v2[2], cur_cross;
next = (i + 1) % 4;
prev = (4 + i - 1) % 4;
sub_v2_v2v2(v1, corners[i], corners[prev]);
sub_v2_v2v2(v2, corners[next], corners[i]);
cur_cross = cross_v2v2(v1, v2);
if (fabsf(cur_cross) <= FLT_EPSILON) {
return false;
}
if (cross == 0.0f) {
cross = cur_cross;
}
else if (cross * cur_cross < 0.0f) {
return false;
}
}
return true;
}
/* TODO(manzanilla): to be removed with tiled implementation. */
static void read_corners_from_sockets(rcti *rect, SocketReader *readers[4], float corners[4][2])
{
for (int i = 0; i < 4; i++) {
float result[4] = {0.0f, 0.0f, 0.0f, 0.0f};
readers[i]->read_sampled(result, rect->xmin, rect->ymin, PixelSampler::Nearest);
corners[i][0] = result[0];
corners[i][1] = result[1];
}
/* convexity check:
* concave corners need to be prevented, otherwise
* BKE_tracking_homography_between_two_quads will freeze
*/
if (!check_corners(corners)) {
/* simply revert to default corners
* there could be a more elegant solution,
* this prevents freezing at least.
*/
corners[0][0] = 0.0f;
corners[0][1] = 0.0f;
corners[1][0] = 1.0f;
corners[1][1] = 0.0f;
corners[2][0] = 1.0f;
corners[2][1] = 1.0f;
corners[3][0] = 0.0f;
corners[3][1] = 1.0f;
}
}
static void set_default_corner(const int corner_idx, float r_corner[2])
{
BLI_assert(corner_idx >= 0 && corner_idx < 4);
switch (corner_idx) {
case LOWER_LEFT_CORNER_INDEX:
r_corner[0] = 0.0f;
r_corner[1] = 0.0f;
break;
case LOWER_RIGHT_CORNER_INDEX:
r_corner[0] = 1.0f;
r_corner[1] = 0.0f;
break;
case UPPER_RIGHT_CORNER_INDEX:
r_corner[0] = 1.0f;
r_corner[1] = 1.0f;
break;
case UPPER_LEFT_CORNER_INDEX:
r_corner[0] = 0.0f;
r_corner[1] = 1.0f;
break;
}
}
static void read_input_corners(NodeOperation *op, const int first_input_idx, float r_corners[4][2])
{
for (const int i : IndexRange(4)) {
NodeOperation *input = op->get_input_operation(i + first_input_idx);
if (input->get_flags().is_constant_operation) {
ConstantOperation *corner_input = static_cast<ConstantOperation *>(input);
copy_v2_v2(r_corners[i], corner_input->get_constant_elem());
}
else {
set_default_corner(i, r_corners[i]);
}
}
/* Convexity check: concave corners need to be prevented, otherwise
* #BKE_tracking_homography_between_two_quads will freeze. */
if (!check_corners(r_corners)) {
/* Revert to default corners. There could be a more elegant solution,
* this prevents freezing at least. */
for (const int i : IndexRange(4)) {
set_default_corner(i, r_corners[i]);
}
}
}
/* ******** PlaneCornerPinMaskOperation ******** */
PlaneCornerPinMaskOperation::PlaneCornerPinMaskOperation() : corners_ready_(false)
{
add_input_socket(DataType::Vector);
add_input_socket(DataType::Vector);
add_input_socket(DataType::Vector);
add_input_socket(DataType::Vector);
/* XXX this is stupid: we need to make this "complex",
* so we can use the initialize_tile_data function
* to read corners from input sockets ...
*/
flags.complex = true;
}
void PlaneCornerPinMaskOperation::init_data()
{
if (execution_model_ == eExecutionModel::FullFrame) {
float corners[4][2];
read_input_corners(this, 0, corners);
calculate_corners(corners, true, 0);
}
}
/* TODO(manzanilla): to be removed with tiled implementation. Same for #deinit_execution and do the
* same on #PlaneCornerPinWarpImageOperation. */
void PlaneCornerPinMaskOperation::init_execution()
{
PlaneDistortMaskOperation::init_execution();
init_mutex();
}
void PlaneCornerPinMaskOperation::deinit_execution()
{
PlaneDistortMaskOperation::deinit_execution();
deinit_mutex();
}
void *PlaneCornerPinMaskOperation::initialize_tile_data(rcti *rect)
{
void *data = PlaneDistortMaskOperation::initialize_tile_data(rect);
/* get corner values once, by reading inputs at (0,0)
* XXX this assumes invariable values (no image inputs),
* we don't have a nice generic system for that yet
*/
lock_mutex();
if (!corners_ready_) {
SocketReader *readers[4] = {
get_input_socket_reader(0),
get_input_socket_reader(1),
get_input_socket_reader(2),
get_input_socket_reader(3),
};
float corners[4][2];
read_corners_from_sockets(rect, readers, corners);
calculate_corners(corners, true, 0);
corners_ready_ = true;
}
unlock_mutex();
return data;
}
void PlaneCornerPinMaskOperation::determine_canvas(const rcti &preferred_area, rcti &r_area)
{
if (execution_model_ == eExecutionModel::FullFrame) {
/* Determine input canvases. */
PlaneDistortMaskOperation::determine_canvas(preferred_area, r_area);
}
r_area = preferred_area;
}
void PlaneCornerPinMaskOperation::get_area_of_interest(const int UNUSED(input_idx),
const rcti &UNUSED(output_area),
rcti &r_input_area)
{
/* All corner inputs are used as constants. */
r_input_area = COM_CONSTANT_INPUT_AREA_OF_INTEREST;
}
/* ******** PlaneCornerPinWarpImageOperation ******** */
PlaneCornerPinWarpImageOperation::PlaneCornerPinWarpImageOperation() : corners_ready_(false)
{
add_input_socket(DataType::Vector);
add_input_socket(DataType::Vector);
add_input_socket(DataType::Vector);
add_input_socket(DataType::Vector);
}
void PlaneCornerPinWarpImageOperation::init_data()
{
if (execution_model_ == eExecutionModel::FullFrame) {
float corners[4][2];
read_input_corners(this, 1, corners);
calculate_corners(corners, true, 0);
}
}
void PlaneCornerPinWarpImageOperation::init_execution()
{
PlaneDistortWarpImageOperation::init_execution();
init_mutex();
}
void PlaneCornerPinWarpImageOperation::deinit_execution()
{
PlaneDistortWarpImageOperation::deinit_execution();
deinit_mutex();
}
void *PlaneCornerPinWarpImageOperation::initialize_tile_data(rcti *rect)
{
void *data = PlaneDistortWarpImageOperation::initialize_tile_data(rect);
/* get corner values once, by reading inputs at (0,0)
* XXX this assumes invariable values (no image inputs),
* we don't have a nice generic system for that yet
*/
lock_mutex();
if (!corners_ready_) {
/* corner sockets start at index 1 */
SocketReader *readers[4] = {
get_input_socket_reader(1),
get_input_socket_reader(2),
get_input_socket_reader(3),
get_input_socket_reader(4),
};
float corners[4][2];
read_corners_from_sockets(rect, readers, corners);
calculate_corners(corners, true, 0);
corners_ready_ = true;
}
unlock_mutex();
return data;
}
bool PlaneCornerPinWarpImageOperation::determine_depending_area_of_interest(
rcti *input, ReadBufferOperation *read_operation, rcti *output)
{
for (int i = 0; i < 4; i++) {
if (get_input_operation(i + 1)->determine_depending_area_of_interest(
input, read_operation, output)) {
return true;
}
}
/* XXX this is bad, but unavoidable with the current design:
* we don't know the actual corners and matrix at this point,
* so all we can do is get the full input image
*/
output->xmin = 0;
output->ymin = 0;
output->xmax = get_input_operation(0)->get_width();
output->ymax = get_input_operation(0)->get_height();
return true;
#if 0
return PlaneDistortWarpImageOperation::determine_depending_area_of_interest(
input, read_operation, output);
#endif
}
void PlaneCornerPinWarpImageOperation::get_area_of_interest(const int input_idx,
const rcti &output_area,
rcti &r_input_area)
{
if (input_idx == 0) {
PlaneDistortWarpImageOperation::get_area_of_interest(input_idx, output_area, r_input_area);
}
else {
/* Corner inputs are used as constants. */
r_input_area = COM_CONSTANT_INPUT_AREA_OF_INTEREST;
}
}
} // namespace blender::compositor
|