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
320
321
322
323
324
325
326
327
328
329
330
331
332
|
/*
* 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) 2009/2018 by the Blender Foundation.
*/
/** \file
* \ingroup draw
*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "BLI_sys_types.h"
#include "DNA_armature_types.h"
#include "DNA_scene_types.h"
#include "DNA_view3d_types.h"
#include "DNA_object_types.h"
#include "BLI_math.h"
#include "UI_resources.h"
#include "DEG_depsgraph_query.h"
#include "DRW_engine.h"
#include "DRW_render.h"
#include "GPU_shader.h"
#include "GPU_immediate.h"
#include "draw_common.h"
#include "draw_manager_text.h"
#include "draw_mode_engines.h"
/* ********************************* Lists ************************************** */
/* All lists are per viewport specific datas.
* They are all free when viewport changes engines
* or is free itself.
*/
/* XXX: How to show frame numbers, etc.? Currently only doing the dots and lines */
typedef struct MPATH_PassList {
struct DRWPass *lines;
struct DRWPass *points;
} MPATH_PassList;
typedef struct MPATH_StorageList {
struct MPATH_PrivateData *g_data;
} MPATH_StorageList;
typedef struct MPATH_Data {
void *engine_type;
DRWViewportEmptyList *fbl;
DRWViewportEmptyList *txl;
MPATH_PassList *psl;
MPATH_StorageList *stl;
} MPATH_Data;
#if 0
static struct {
GPUShader *mpath_line_sh;
GPUShader *mpath_points_sh;
} e_data = {0};
#endif
/* *************************** Path Cache *********************************** */
/* Just convert the CPU cache to GPU cache. */
static GPUVertBuf *mpath_vbo_get(bMotionPath *mpath)
{
if (!mpath->points_vbo) {
GPUVertFormat format = {0};
/* Match structure of bMotionPathVert. */
uint pos = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
GPU_vertformat_attr_add(&format, "flag", GPU_COMP_I32, 1, GPU_FETCH_INT);
mpath->points_vbo = GPU_vertbuf_create_with_format(&format);
GPU_vertbuf_data_alloc(mpath->points_vbo, mpath->length);
/* meh... a useless memcpy. */
GPUVertBufRaw raw_data;
GPU_vertbuf_attr_get_raw_data(mpath->points_vbo, pos, &raw_data);
memcpy(GPU_vertbuf_raw_step(&raw_data), mpath->points, sizeof(bMotionPathVert) * mpath->length);
}
return mpath->points_vbo;
}
static GPUBatch *mpath_batch_line_get(bMotionPath *mpath)
{
if (!mpath->batch_line) {
mpath->batch_line = GPU_batch_create(GPU_PRIM_LINE_STRIP, mpath_vbo_get(mpath), NULL);
}
return mpath->batch_line;
}
static GPUBatch *mpath_batch_points_get(bMotionPath *mpath)
{
if (!mpath->batch_points) {
mpath->batch_points = GPU_batch_create(GPU_PRIM_POINTS, mpath_vbo_get(mpath), NULL);
}
return mpath->batch_points;
}
/* *************************** Draw Engine Entrypoints ************************** */
static void MPATH_engine_init(void *UNUSED(vedata))
{
}
static void MPATH_engine_free(void)
{
}
/* Here init all passes and shading groups
* Assume that all Passes are NULL */
static void MPATH_cache_init(void *vedata)
{
MPATH_PassList *psl = ((MPATH_Data *)vedata)->psl;
{
DRWState state = DRW_STATE_WRITE_COLOR;
psl->lines = DRW_pass_create("Motionpath Line Pass", state);
}
{
DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_POINT;
psl->points = DRW_pass_create("Motionpath Point Pass", state);
}
}
static void MPATH_get_frame_range_to_draw(
bAnimVizSettings *avs, bMotionPath *mpath, int current_frame,
int *r_start, int *r_end, int *r_step)
{
int start, end;
if (avs->path_type == MOTIONPATH_TYPE_ACFRA) {
start = current_frame - avs->path_bc;
end = current_frame + avs->path_ac + 1;
}
else {
start = avs->path_sf;
end = avs->path_ef;
}
if (start > end) {
SWAP(int, start, end);
}
CLAMP(start, mpath->start_frame, mpath->end_frame);
CLAMP(end, mpath->start_frame, mpath->end_frame);
*r_start = start;
*r_end = end;
*r_step = max_ii(avs->path_step, 1);
}
static void MPATH_cache_motion_path(MPATH_PassList *psl,
Object *ob, bPoseChannel *pchan,
bAnimVizSettings *avs, bMotionPath *mpath)
{
const DRWContextState *draw_ctx = DRW_context_state_get();
struct DRWTextStore *dt = DRW_text_cache_ensure();
int txt_flag = DRW_TEXT_CACHE_GLOBALSPACE | DRW_TEXT_CACHE_ASCII;
int cfra = (int)DEG_get_ctime(draw_ctx->depsgraph);
bool sel = (pchan) ? (pchan->bone->flag & BONE_SELECTED) : (ob->flag & SELECT);
bool show_keyframes = (avs->path_viewflag & MOTIONPATH_VIEW_KFRAS) != 0;
int sfra, efra, stepsize;
MPATH_get_frame_range_to_draw(avs, mpath, cfra, &sfra, &efra, &stepsize);
int len = efra - sfra;
if (len == 0) {
return;
}
int start_index = sfra - mpath->start_frame;
bool use_custom_col = (mpath->flag & MOTIONPATH_FLAG_CUSTOM) != 0;
/* draw curve-line of path */
/* Draw lines only if line drawing option is enabled */
if (mpath->flag & MOTIONPATH_FLAG_LINES) {
DRWShadingGroup *shgrp = DRW_shgroup_create(mpath_line_shader_get(), psl->lines);
DRW_shgroup_uniform_int_copy(shgrp, "frameCurrent", cfra);
DRW_shgroup_uniform_int_copy(shgrp, "frameStart", sfra);
DRW_shgroup_uniform_int_copy(shgrp, "frameEnd", efra);
DRW_shgroup_uniform_int_copy(shgrp, "cacheStart", mpath->start_frame);
DRW_shgroup_uniform_int_copy(shgrp, "lineThickness", mpath->line_thickness);
DRW_shgroup_uniform_bool_copy(shgrp, "selected", sel);
DRW_shgroup_uniform_bool_copy(shgrp, "useCustomColor", use_custom_col);
DRW_shgroup_uniform_vec2(shgrp, "viewportSize", DRW_viewport_size_get(), 1);
DRW_shgroup_uniform_block(shgrp, "globalsBlock", G_draw.block_ubo);
if (use_custom_col) {
DRW_shgroup_uniform_vec3(shgrp, "customColor", mpath->color, 1);
}
/* Only draw the required range. */
DRW_shgroup_call_range_add(shgrp, mpath_batch_line_get(mpath), NULL, start_index, len);
}
/* Draw points. */
DRWShadingGroup *shgrp = DRW_shgroup_create(mpath_points_shader_get(), psl->points);
DRW_shgroup_uniform_int_copy(shgrp, "frameCurrent", cfra);
DRW_shgroup_uniform_int_copy(shgrp, "cacheStart", mpath->start_frame);
DRW_shgroup_uniform_int_copy(shgrp, "pointSize", max_ii(mpath->line_thickness - 1, 1));
DRW_shgroup_uniform_int_copy(shgrp, "stepSize", stepsize);
DRW_shgroup_uniform_bool_copy(shgrp, "showKeyFrames", show_keyframes);
DRW_shgroup_uniform_bool_copy(shgrp, "useCustomColor", use_custom_col);
DRW_shgroup_uniform_block(shgrp, "globalsBlock", G_draw.block_ubo);
if (use_custom_col) {
DRW_shgroup_uniform_vec3(shgrp, "customColor", mpath->color, 1);
}
/* Only draw the required range. */
DRW_shgroup_call_range_add(shgrp, mpath_batch_points_get(mpath), NULL, start_index, len);
/* Draw frame numbers at each framestep value */
bool show_kf_no = (avs->path_viewflag & MOTIONPATH_VIEW_KFNOS) != 0;
if ((avs->path_viewflag & (MOTIONPATH_VIEW_FNUMS)) || (show_kf_no && show_keyframes)) {
int i;
uchar col[4], col_kf[4];
UI_GetThemeColor3ubv(TH_TEXT_HI, col);
UI_GetThemeColor3ubv(TH_VERTEX_SELECT, col_kf);
col[3] = col_kf[3] = 255;
bMotionPathVert *mpv;
bMotionPathVert *mpv_start = mpath->points + start_index;
for (i = 0, mpv = mpv_start; i < len; i += stepsize, mpv += stepsize) {
int frame = sfra + i;
char numstr[32];
size_t numstr_len;
bool is_keyframe = (mpv->flag & MOTIONPATH_VERT_KEY) != 0;
if ((show_keyframes && show_kf_no && is_keyframe) ||
((avs->path_viewflag & MOTIONPATH_VIEW_FNUMS) && (i == 0)))
{
numstr_len = sprintf(numstr, " %d", frame);
DRW_text_cache_add(dt, mpv->co, numstr, numstr_len, 0, 0, txt_flag, (is_keyframe) ? col_kf : col);
}
else if (avs->path_viewflag & MOTIONPATH_VIEW_FNUMS) {
bMotionPathVert *mpvP = (mpv - stepsize);
bMotionPathVert *mpvN = (mpv + stepsize);
/* only draw framenum if several consecutive highlighted points don't occur on same point */
if ((equals_v3v3(mpv->co, mpvP->co) == 0) || (equals_v3v3(mpv->co, mpvN->co) == 0)) {
numstr_len = sprintf(numstr, " %d", frame);
DRW_text_cache_add(dt, mpv->co, numstr, numstr_len, 0, 0, txt_flag, col);
}
}
}
}
}
/* Add geometry to shading groups. Execute for each objects */
static void MPATH_cache_populate(void *vedata, Object *ob)
{
MPATH_PassList *psl = ((MPATH_Data *)vedata)->psl;
const DRWContextState *draw_ctx = DRW_context_state_get();
if (draw_ctx->v3d->overlay.flag & V3D_OVERLAY_HIDE_MOTION_PATHS) {
return;
}
if (ob->type == OB_ARMATURE) {
if (DRW_pose_mode_armature(ob, draw_ctx->obact)) {
for (bPoseChannel *pchan = ob->pose->chanbase.first; pchan; pchan = pchan->next) {
if (pchan->mpath) {
MPATH_cache_motion_path(psl, ob, pchan, &ob->pose->avs, pchan->mpath);
}
}
}
}
else {
if (ob->mpath) {
MPATH_cache_motion_path(psl, ob, NULL, &ob->avs, ob->mpath);
}
}
}
/* Draw time! Control rendering pipeline from here */
static void MPATH_draw_scene(void *vedata)
{
MPATH_PassList *psl = ((MPATH_Data *)vedata)->psl;
DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get();
DefaultTextureList *dtxl = DRW_viewport_texture_list_get();
if (DRW_pass_is_empty(psl->lines) &&
DRW_pass_is_empty(psl->points))
{
/* Nothing to draw. */
return;
}
MULTISAMPLE_SYNC_ENABLE(dfbl, dtxl);
DRW_draw_pass(psl->lines);
DRW_draw_pass(psl->points);
MULTISAMPLE_SYNC_DISABLE_NO_DEPTH(dfbl, dtxl);
}
/* *************************** Draw Engine Defines ****************************** */
static const DrawEngineDataSize MPATH_data_size = DRW_VIEWPORT_DATA_SIZE(MPATH_Data);
DrawEngineType draw_engine_motion_path_type = {
NULL, NULL,
N_("MotionPath"),
&MPATH_data_size,
&MPATH_engine_init,
&MPATH_engine_free,
&MPATH_cache_init,
&MPATH_cache_populate,
NULL,
NULL,
&MPATH_draw_scene,
NULL,
NULL,
};
|