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トップに関する質問[OpenGL] カメラの視点回転が正しいのか知りたい。

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3

文章とタイトルを修正

2021/10/31 07:18

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退会済みユーザー
test CHANGED
@@ -1 +1 @@
1
- [OpenGL] カメラの視点回転で回転姿勢を扱いたい。
1
+ [OpenGL] カメラの視点回転が正しいのか知りたい。
test CHANGED
@@ -1,12 +1,6 @@
1
- 提示コードですがMain.cppのコメント部のようにカメラを上下左右に回転させたいのですがそれをするには回転姿勢を扱う必要があるのですがそれはどういった行列の計算が必要なのでしょうか？
1
+ 提示コードですがCamera.cppのコメント部内部のコードなのですがsetLook()関数をMain.cppで使っているのですがcos.sinの使い方と視線の動かし方は正しいのでしょうか？
2
-
3
-
4
-
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-
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-
7
- 参考サイト：[ https://blog.natade.net/2017/05/27/directx-opengl-d3dxmatrixrotation-glrotate/
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+
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-
9
- ](https://blog.natade.net/2017/05/27/directx-opengl-d3dxmatrixrotation-glrotate/)
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+
10
4
 
11
5
 
12
6
 
@@ -14,9 +8,173 @@
14
8
 
15
9
 
16
10
 
11
+ ##### Camera.cpp
12
+
13
+ ```
14
+
15
+ #include "../header/Camera.hpp"
16
+
17
+
18
+
19
+ #include <glm/glm.hpp>
20
+
17
- ![イメージ説明](08d28edb4f3b830f74d57229b6b5d9fb.png)
21
+ #include <glm/gtx/transform.hpp>
22
+
18
-
23
+ #include <glm/gtc/matrix_transform.hpp>
24
+
19
-
25
+ #include "../header/Window.hpp"
26
+
27
+ #include "../header/Init.hpp"
28
+
29
+
30
+
31
+ std::shared_ptr<std::vector<FrameWork::D2::VertexAttribute>> FrameWork::Camera::vertex = std::make_shared<std::vector<FrameWork::D2::VertexAttribute>>(0); //頂点配列
32
+
33
+
34
+
35
+ glm::mat4 FrameWork::Camera::scale = glm::mat4(); //拡大縮小
36
+
37
+ glm::mat4 FrameWork::Camera::rotate = glm::mat4(); //回転
38
+
39
+ glm::mat4 FrameWork::Camera::translate = glm::mat4(); //平行移動
40
+
41
+
42
+
43
+ //描画行列
44
+
45
+ glm::vec3 FrameWork::Camera::position = glm::vec3(0,0,0); //座標
46
+
47
+ glm::vec3 FrameWork::Camera::vecLook = glm::vec3(0,0,-1); //向き(視線)
48
+
49
+ glm::mat4 FrameWork::Camera::view = glm::lookAt(glm::vec3(position.x, position.y, position.z), vecLook, glm::vec3(0, 1, 0)); //ビュー行列
50
+
51
+ glm::mat4 FrameWork::Camera::projection = glm::perspective(glm::radians(90.0f), 4.0f / 3.0f, 0.00001f, 10000.0f); //透視射形行列
52
+
53
+
54
+
55
+ // ##################################### 初期化　#####################################
56
+
57
+ void FrameWork::Camera::Init()
58
+
59
+ {
60
+
61
+ vertex->resize(6); //頂点配列を初期化
62
+
63
+ }
64
+
65
+
66
+
67
+
68
+
69
+ // ##################################### 頂点属性を取得　#####################################
70
+
71
+ std::shared_ptr<std::vector<FrameWork::D2::VertexAttribute>> FrameWork::Camera::getVertexAttribute()
72
+
73
+ {
74
+
75
+ return vertex;
76
+
77
+ }
78
+
79
+
80
+
81
+ // ##################################### 座標を設定　#####################################
82
+
83
+ void FrameWork::Camera::setPosition(glm::vec3 p)
84
+
85
+ {
86
+
87
+ position = p; //座標
88
+
89
+ }
90
+
91
+ ////////////////////////////////////////////////////////////////////////////////////////////////////////
92
+
93
+ // ##################################### 視線を設定 #####################################
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+
95
+ void FrameWork::Camera::setLook(glm::vec3 l)
96
+
97
+ {
98
+
99
+ vecLook = l; //向き
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+
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+
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+
103
+ glm::vec3 up = glm::vec3(0, 1, 0);
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+
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+ glm::vec3 cameraDirection = glm::normalize(position - vecLook);
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+
107
+ glm::vec3 cameraRight = glm::normalize(glm::cross(up, cameraDirection));
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+
109
+ glm::vec3 cameraUp = glm::cross(vecLook, cameraRight);
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+
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+
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+
113
+ view = glm::lookAt(glm::vec3(position.x, position.y, position.z), position + vecLook,up);
114
+
115
+ }
116
+
117
+ ////////////////////////////////////////////////////////////////////////////////////////////////////////
118
+
119
+ // ##################################### 座標を取得 #####################################
120
+
121
+ glm::vec3 FrameWork::Camera::getPosition()
122
+
123
+ {
124
+
125
+ return position;
126
+
127
+ }
128
+
129
+
130
+
131
+ // #####################################　視線を取得 #####################################
132
+
133
+ glm::vec3 FrameWork::Camera::getLook()
134
+
135
+ {
136
+
137
+ return vecLook;
138
+
139
+ }
140
+
141
+
142
+
143
+ // ##################################### 3D ビュー行列を取得　透視射形行列 #####################################
144
+
145
+ glm::mat4 FrameWork::Camera::getViewProjection()
146
+
147
+ {
148
+
149
+ return projection * view;
150
+
151
+ }
152
+
153
+
154
+
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+ // ##################################### ２D ビュー行列を取得 正射形　#####################################
156
+
157
+ glm::mat4 FrameWork::Camera::getProjection_2D()
158
+
159
+ {
160
+
161
+ return glm::ortho(0.0f, FrameWork::windowContext->getSize().x, FrameWork::windowContext->getSize().y, 0.0f, -1.0f, 1.0f);
162
+
163
+ }
164
+
165
+
166
+
167
+ // ###################### デストラクタ ######################
168
+
169
+ FrameWork::Camera::~Camera()
170
+
171
+ {
172
+
173
+
174
+
175
+ }
176
+
177
+ ```
20
178
 
21
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22
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@@ -24,468 +182,70 @@
24
182
 
25
183
  ##### Main.cpp
26
184
 
185
+ ```cpp
186
+
187
+
188
+
189
+ //関数の外に宣言 初期値↓
190
+
191
+ float cameraLookSpeed = PI / 100; //視点移動速度
192
+
193
+ glm::vec3 cameraLook = glm::vec3(PI /2,PI,0);
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+
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+
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+
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+
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+
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+
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+
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+
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+
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+ if (FrameWork::windowContext->getKeyInput(GLFW_KEY_LEFT_CONTROL) > 0)
204
+
205
+ {
206
+
207
+ if (FrameWork::windowContext->getKeyInput(GLFW_KEY_LEFT) > (short)0)
208
+
209
+ {
210
+
211
+ cameraLook.x += -cameraLookSpeed;
212
+
213
+ }
214
+
215
+ else if (FrameWork::windowContext->getKeyInput(GLFW_KEY_RIGHT) > (short)0)
216
+
217
+ {
218
+
219
+ cameraLook.x += cameraLookSpeed;
220
+
221
+ }
222
+
223
+
224
+
225
+ if (FrameWork::windowContext->getKeyInput(GLFW_KEY_UP) > (short)0)
226
+
227
+ {
228
+
229
+ cameraLook.y += cameraLookSpeed;
230
+
231
+ }
232
+
233
+ else if (FrameWork::windowContext->getKeyInput(GLFW_KEY_DOWN) > (short)0)
234
+
235
+ {
236
+
237
+ cameraLook.y += -cameraLookSpeed;
238
+
239
+ }
240
+
241
+ }
242
+
243
+
244
+
245
+ FrameWork::Camera::setLook(glm::vec3(cos(cameraLook.x) * cos(cameraLook.y), sin(cameraLook.y), sin(cameraLook.x) * cos(cameraLook.y)));
246
+
247
+ FrameWork::Camera::setPosition(cameraPos);
248
+
249
+
250
+
27
251
  ```
28
-
29
- include "../header/FrameWork.hpp"
30
-
31
- #include "../header/Resource.hpp"
32
-
33
-
34
-
35
- #include <iostream>
36
-
37
- #include "../header/Camera.hpp"
38
-
39
-
40
-
41
-
42
-
43
- int main()
44
-
45
- {
46
-
47
- FrameWork::Init(glm::ivec2(800, 600), glm::ivec2(4,2), "FrameWork"); //　初期化
48
-
49
- FrameWork::Camera::Init(); //カメラ初期化
50
-
51
-
52
-
53
-
54
-
55
- FrameWork::ObjFile cubeFile;
56
-
57
- FrameWork::D3::LoadObj("Model/Cube.obj",cubeFile);
58
-
59
- FrameWork::D3::Object cube(cubeFile);
60
-
61
-
62
-
63
- FrameWork::ObjFile groundFile;
64
-
65
- FrameWork::D3::LoadObj("Model/ground.obj",groundFile);
66
-
67
- FrameWork::D3::Object ground(groundFile);
68
-
69
-
70
-
71
-
72
-
73
- float y = 0;
74
-
75
- float x = 0;
76
-
77
-
78
-
79
- float angleY = 0;
80
-
81
- float angleX = 0;
82
-
83
-
84
-
85
- float vecSpeed = PI / 100;
86
-
87
- while (*FrameWork::windowContext)
88
-
89
- {
90
-
91
- FrameWork::windowContext->FrameUpdate(glm::vec4(0,0,0,255));
92
-
93
-
94
-
95
-
96
-
97
-
98
-
99
-
100
-
101
- if(FrameWork::windowContext->getKeyInput(GLFW_KEY_A) > (short)0)
102
-
103
- {
104
-
105
- angleY = 0.001;
106
-
107
-
108
-
109
- cube.setRotate(glm::vec3(0,1,0),angleY);
110
-
111
- }
112
-
113
- else if(FrameWork::windowContext->getKeyInput(GLFW_KEY_D) > (short)0)
114
-
115
- {
116
-
117
- angleY = -0.001;
118
-
119
- cube.setRotate(glm::vec3(0,1,0),angleY);
120
-
121
-
122
-
123
- }
124
-
125
- else if(FrameWork::windowContext->getKeyInput(GLFW_KEY_W) > (short)0)
126
-
127
- {
128
-
129
- angleY = 0.001;
130
-
131
- cube.setRotate(glm::vec3(1,0,0),angleY);
132
-
133
-
134
-
135
- }
136
-
137
- else if(FrameWork::windowContext->getKeyInput(GLFW_KEY_S) > (short)0)
138
-
139
- {
140
-
141
- angleY = -0.001;
142
-
143
- cube.setRotate(glm::vec3(1,0,0),angleY);
144
-
145
- }
146
-
147
-
148
-
149
-
150
-
151
- if(FrameWork::windowContext->getKeyInput(GLFW_KEY_LEFT) > (short)0)
152
-
153
- {
154
-
155
- x += -vecSpeed;
156
-
157
-
158
-
159
- // printf("left\n");
160
-
161
- // printf("%f , %f \n",x,y);
162
-
163
-
164
-
165
- }
166
-
167
- else if(FrameWork::windowContext->getKeyInput(GLFW_KEY_RIGHT) > (short)0)
168
-
169
- {
170
-
171
- x += vecSpeed;
172
-
173
- // printf("right\n");
174
-
175
- // printf("%f , %f \n",x,y);
176
-
177
-
178
-
179
- }
180
-
181
-
182
-
183
- if(FrameWork::windowContext->getKeyInput(GLFW_KEY_UP) > (short)0)
184
-
185
- {
186
-
187
- y += vecSpeed;
188
-
189
- // printf("up\n");
190
-
191
- // printf("%f , %f \n",x,y);
192
-
193
-
194
-
195
-
196
-
197
- }
198
-
199
- else if(FrameWork::windowContext->getKeyInput(GLFW_KEY_DOWN) > (short)0)
200
-
201
- {
202
-
203
- y += -vecSpeed;
204
-
205
- // printf("down\n");
206
-
207
- // printf("%f , %f \n",x,y);
208
-
209
-
210
-
211
- }
212
-
213
-
214
-
215
-
216
-
217
-
218
-
219
- /////////////////////////////////////////////////////////////////////////////////////////////////////
220
-
221
- FrameWork::Camera::setLook(glm::vec3(cos(x) + 0,sin(y) + 100,sin(x) + 300));
222
-
223
- FrameWork::Camera::setPosition(glm::vec3(0,100,300));
224
-
225
- //////////////////////////////////////////////////////////////////////////////////////////////////////////
226
-
227
-
228
-
229
- //Cube
230
-
231
- cube.shader->setEnable();
232
-
233
- cube.setPosition(glm::vec3(0,70,30));
234
-
235
- cube.setScale(glm::vec3(30,30,30));
236
-
237
- // cube.shader->setUniform4f("uFragment",FrameWork::GetGlColor(glm::vec4(0,0,100,255)));
238
-
239
- cube.shader->setUniform3f("objectColor", glm::vec3(1.0f, 0.5f, 0.31f));
240
-
241
- cube.shader->setUniform3f("lightColor", glm::vec3(1.0f, 1.0f, 1.0f));
242
-
243
- cube.shader->setUniform3f("lightPos", glm::vec3(0,0,0.0f));
244
-
245
- cube.shader->setUniform3f("viewPos",FrameWork::Camera::getPosition());
246
-
247
- cube.Renderer();
248
-
249
- cube.shader->setDisable();
250
-
251
-
252
-
253
-
254
-
255
-
256
-
257
-
258
-
259
-
260
-
261
- //Ground
262
-
263
- ground.shader->setEnable();
264
-
265
- ground.setPosition(glm::vec3(0,0,0));
266
-
267
- ground.setScale(glm::vec3(1,1,1));
268
-
269
- ground.shader->setUniform3f("objectColor", glm::vec3(1.0f, 0.5f, 0.31f));
270
-
271
- ground.shader->setUniform3f("lightColor", glm::vec3(1.0f, 1.0f, 1.0f));
272
-
273
- ground.shader->setUniform3f("lightPos", glm::vec3(0,0,0));
274
-
275
- ground.shader->setUniform3f("viewPos", FrameWork::Camera::getPosition());
276
-
277
- //ground.shader->setUniform4f("uFragment",FrameWork::GetGlColor(glm::vec4(0,100,0,255)));
278
-
279
- ground.Renderer();
280
-
281
- ground.shader->setDisable();
282
-
283
-
284
-
285
-
286
-
287
-
288
-
289
-
290
-
291
-
292
-
293
-
294
-
295
- FrameWork::windowContext->Wait();
296
-
297
- FrameWork::windowContext->SwapBuffers();
298
-
299
- }
300
-
301
-
302
-
303
-
304
-
305
-
306
-
307
-
308
-
309
-
310
-
311
- return 0;
312
-
313
- }
314
-
315
-
316
-
317
- ```
318
-
319
-
320
-
321
-
322
-
323
-
324
-
325
- ##### Camera.cpp
326
-
327
- ```
328
-
329
- #include "../header/Camera.hpp"
330
-
331
-
332
-
333
- #include <glm/glm.hpp>
334
-
335
- #include <glm/gtx/transform.hpp>
336
-
337
- #include <glm/gtc/matrix_transform.hpp>
338
-
339
- #include "../header/Window.hpp"
340
-
341
- #include "../header/Init.hpp"
342
-
343
-
344
-
345
- std::shared_ptr<std::vector<FrameWork::D2::VertexAttribute>> FrameWork::Camera::vertex = std::make_shared<std::vector<FrameWork::D2::VertexAttribute>>(0); //頂点配列
346
-
347
-
348
-
349
- glm::mat4 FrameWork::Camera::scale = glm::mat4(); //拡大縮小
350
-
351
- glm::mat4 FrameWork::Camera::rotate = glm::mat4(); //回転
352
-
353
- glm::mat4 FrameWork::Camera::translate = glm::mat4(); //平行移動
354
-
355
-
356
-
357
- //描画行列
358
-
359
- glm::vec3 FrameWork::Camera::position = glm::vec3(0,0,0); //座標
360
-
361
- glm::vec3 FrameWork::Camera::vecLook = glm::vec3(0,0,-1); //向き(視線)
362
-
363
- glm::mat4 FrameWork::Camera::view = glm::lookAt(glm::vec3(position.x, position.y, position.z), vecLook, glm::vec3(0, 1, 0)); //ビュー行列
364
-
365
- glm::mat4 FrameWork::Camera::projection = glm::perspective(glm::radians(90.0f), 4.0f / 3.0f, 0.00001f, 10000.0f); //透視射形行列
366
-
367
-
368
-
369
- // ##################################### 初期化　#####################################
370
-
371
- void FrameWork::Camera::Init()
372
-
373
- {
374
-
375
- vertex->resize(6); //頂点配列を初期化
376
-
377
- }
378
-
379
-
380
-
381
-
382
-
383
- // ##################################### 頂点属性を取得　#####################################
384
-
385
- std::shared_ptr<std::vector<FrameWork::D2::VertexAttribute>> FrameWork::Camera::getVertexAttribute()
386
-
387
- {
388
-
389
- return vertex;
390
-
391
- }
392
-
393
-
394
-
395
- // ##################################### 座標を設定　#####################################
396
-
397
- void FrameWork::Camera::setPosition(glm::vec3 p)
398
-
399
- {
400
-
401
- position = p; //座標
402
-
403
- }
404
-
405
-
406
-
407
- // ##################################### 視線を設定 #####################################
408
-
409
- void FrameWork::Camera::setLook(glm::vec3 l)
410
-
411
- {
412
-
413
- vecLook = l; //向き
414
-
415
- glm::vec3 up = glm::vec3(0, 1, 0);
416
-
417
-
418
-
419
- glm::vec3 cameraDirection = glm::normalize(position - vecLook);
420
-
421
- glm::vec3 cameraRight = glm::normalize(glm::cross(up, cameraDirection));
422
-
423
- glm::vec3 cameraUp = glm::cross(vecLook, cameraRight);
424
-
425
-
426
-
427
- view = glm::lookAt(glm::vec3(position.x, position.y, position.z), position + vecLook,glm::vec3(0, 1, 0));
428
-
429
- }
430
-
431
-
432
-
433
- // ##################################### 座標を取得 #####################################
434
-
435
- glm::vec3 FrameWork::Camera::getPosition()
436
-
437
- {
438
-
439
- return position;
440
-
441
- }
442
-
443
-
444
-
445
- // #####################################　視線を取得 #####################################
446
-
447
- glm::vec3 FrameWork::Camera::getLook()
448
-
449
- {
450
-
451
- return vecLook;
452
-
453
- }
454
-
455
-
456
-
457
- // ##################################### 3D ビュー行列を取得　透視射形行列 #####################################
458
-
459
- glm::mat4 FrameWork::Camera::getViewProjection()
460
-
461
- {
462
-
463
- return projection * view;
464
-
465
- }
466
-
467
-
468
-
469
- // ##################################### ２D ビュー行列を取得 正射形　#####################################
470
-
471
- glm::mat4 FrameWork::Camera::getProjection_2D()
472
-
473
- {
474
-
475
- return glm::ortho(0.0f, FrameWork::windowContext->getSize().x, FrameWork::windowContext->getSize().y, 0.0f, -1.0f, 1.0f);
476
-
477
- }
478
-
479
-
480
-
481
- // ###################### デストラクタ ######################
482
-
483
- FrameWork::Camera::~Camera()
484
-
485
- {
486
-
487
-
488
-
489
- }
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-
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- ```

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2021/10/31 07:18

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退会済みユーザー
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+ 参考サイト： [https://learnopengl.com/Getting-started/Camera](https://learnopengl.com/Getting-started/Camera)
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  ![イメージ説明](08d28edb4f3b830f74d57229b6b5d9fb.png)
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  vecLook = l; //向き
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+ glm::vec3 up = glm::vec3(0, 1, 0);
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+ glm::vec3 cameraDirection = glm::normalize(position - vecLook);
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+ glm::vec3 cameraRight = glm::normalize(glm::cross(up, cameraDirection));
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+ glm::vec3 cameraUp = glm::cross(vecLook, cameraRight);
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- view = glm::lookAt(glm::vec3(position.x, position.y, position.z), vecLook, glm::vec3(0, 1, 0));
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+ view = glm::lookAt(glm::vec3(position.x, position.y, position.z), position + vecLook,glm::vec3(0, 1, 0));
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  }
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文章を修正

2021/10/28 08:26

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退会済みユーザー
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- 提示コードですがMain.cppのようにカメラを上下左右に回転させたいのですがそれをするには回転姿勢を扱う必要があるのですがそれはどういった行列の計算が必要なのでしょうか？
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+ 提示コードですがMain.cppのコメント部のようにカメラを上下左右に回転させたいのですがそれをするには回転姿勢を扱う必要があるのですがそれはどういった行列の計算が必要なのでしょうか？
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+ /////////////////////////////////////////////////////////////////////////////////////////////////////
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  FrameWork::Camera::setLook(glm::vec3(cos(x) + 0,sin(y) + 100,sin(x) + 300));
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  FrameWork::Camera::setPosition(glm::vec3(0,100,300));
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+ //////////////////////////////////////////////////////////////////////////////////////////////////////////
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