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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

投稿

退会済みユーザー
title CHANGED
@@ -1,1 +1,1 @@
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- [OpenGL] カメラの視点回転で回転姿勢を扱いたい。
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+ [OpenGL] カメラの視点回転が正しいのか知りたい。
body CHANGED
@@ -1,165 +1,8 @@
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？
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- 参考サイト：[ https://blog.natade.net/2017/05/27/directx-opengl-d3dxmatrixrotation-glrotate/
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- ](https://blog.natade.net/2017/05/27/directx-opengl-d3dxmatrixrotation-glrotate/)
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-
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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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-
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-
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-
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- ##### Main.cpp
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- ```
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- include "../header/FrameWork.hpp"
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- #include "../header/Resource.hpp"
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-
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- #include <iostream>
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- #include "../header/Camera.hpp"
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-
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-
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- int main()
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- {
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- FrameWork::Init(glm::ivec2(800, 600), glm::ivec2(4,2), "FrameWork"); //　初期化
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- FrameWork::Camera::Init(); //カメラ初期化
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-
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-
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- FrameWork::ObjFile cubeFile;
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- FrameWork::D3::LoadObj("Model/Cube.obj",cubeFile);
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- FrameWork::D3::Object cube(cubeFile);
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-
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- FrameWork::ObjFile groundFile;
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- FrameWork::D3::LoadObj("Model/ground.obj",groundFile);
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- FrameWork::D3::Object ground(groundFile);
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-
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-
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- float y = 0;
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- float x = 0;
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-
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- float angleY = 0;
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- float angleX = 0;
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-
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- float vecSpeed = PI / 100;
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- while (*FrameWork::windowContext)
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- {
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- FrameWork::windowContext->FrameUpdate(glm::vec4(0,0,0,255));
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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_A) > (short)0)
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- {
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- angleY = 0.001;
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-
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- cube.setRotate(glm::vec3(0,1,0),angleY);
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- }
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- else if(FrameWork::windowContext->getKeyInput(GLFW_KEY_D) > (short)0)
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- {
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- angleY = -0.001;
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- cube.setRotate(glm::vec3(0,1,0),angleY);
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-
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- }
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- else if(FrameWork::windowContext->getKeyInput(GLFW_KEY_W) > (short)0)
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- {
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- angleY = 0.001;
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- cube.setRotate(glm::vec3(1,0,0),angleY);
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-
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- }
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- else if(FrameWork::windowContext->getKeyInput(GLFW_KEY_S) > (short)0)
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- {
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- angleY = -0.001;
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- cube.setRotate(glm::vec3(1,0,0),angleY);
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- }
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-
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-
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- if(FrameWork::windowContext->getKeyInput(GLFW_KEY_LEFT) > (short)0)
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- {
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- x += -vecSpeed;
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-
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- // printf("left\n");
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- // printf("%f , %f \n",x,y);
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-
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- }
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- else if(FrameWork::windowContext->getKeyInput(GLFW_KEY_RIGHT) > (short)0)
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- {
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- x += vecSpeed;
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- // printf("right\n");
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- // printf("%f , %f \n",x,y);
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-
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- }
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-
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- if(FrameWork::windowContext->getKeyInput(GLFW_KEY_UP) > (short)0)
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- {
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- y += vecSpeed;
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- // printf("up\n");
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- // printf("%f , %f \n",x,y);
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-
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-
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- }
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- else if(FrameWork::windowContext->getKeyInput(GLFW_KEY_DOWN) > (short)0)
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- {
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- y += -vecSpeed;
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- // printf("down\n");
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- // printf("%f , %f \n",x,y);
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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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- 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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-
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- //Cube
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- cube.shader->setEnable();
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- cube.setPosition(glm::vec3(0,70,30));
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- cube.setScale(glm::vec3(30,30,30));
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- // cube.shader->setUniform4f("uFragment",FrameWork::GetGlColor(glm::vec4(0,0,100,255)));
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- cube.shader->setUniform3f("objectColor", glm::vec3(1.0f, 0.5f, 0.31f));
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- cube.shader->setUniform3f("lightColor", glm::vec3(1.0f, 1.0f, 1.0f));
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- cube.shader->setUniform3f("lightPos", glm::vec3(0,0,0.0f));
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- cube.shader->setUniform3f("viewPos",FrameWork::Camera::getPosition());
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- cube.Renderer();
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- cube.shader->setDisable();
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-
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-
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-
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-
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-
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- //Ground
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- ground.shader->setEnable();
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- ground.setPosition(glm::vec3(0,0,0));
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- ground.setScale(glm::vec3(1,1,1));
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- ground.shader->setUniform3f("objectColor", glm::vec3(1.0f, 0.5f, 0.31f));
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- ground.shader->setUniform3f("lightColor", glm::vec3(1.0f, 1.0f, 1.0f));
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- ground.shader->setUniform3f("lightPos", glm::vec3(0,0,0));
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- ground.shader->setUniform3f("viewPos", FrameWork::Camera::getPosition());
139
- //ground.shader->setUniform4f("uFragment",FrameWork::GetGlColor(glm::vec4(0,100,0,255)));
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- ground.Renderer();
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- ground.shader->setDisable();
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-
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-
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-
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-
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-
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-
148
- FrameWork::windowContext->Wait();
149
- FrameWork::windowContext->SwapBuffers();
150
- }
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-
152
-
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-
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-
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-
156
- return 0;
157
- }
158
-
159
- ```
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-
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-
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-
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6
  ##### Camera.cpp
164
7
  ```
165
8
  #include "../header/Camera.hpp"
@@ -200,20 +43,20 @@
200
43
  {
201
44
  position = p; //座標
202
45
  }
203
-
46
+ ////////////////////////////////////////////////////////////////////////////////////////////////////////
204
47
  // ##################################### 視線を設定 #####################################
205
48
  void FrameWork::Camera::setLook(glm::vec3 l)
206
49
  {
207
50
  vecLook = l; //向き
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+
208
52
  glm::vec3 up = glm::vec3(0, 1, 0);
209
-
210
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  glm::vec3 cameraDirection = glm::normalize(position - vecLook);
211
54
  glm::vec3 cameraRight = glm::normalize(glm::cross(up, cameraDirection));
212
55
  glm::vec3 cameraUp = glm::cross(vecLook, cameraRight);
213
56
 
214
- view = glm::lookAt(glm::vec3(position.x, position.y, position.z), position + vecLook,glm::vec3(0, 1, 0));
57
+ view = glm::lookAt(glm::vec3(position.x, position.y, position.z), position + vecLook,up);
215
58
  }
216
-
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+ ////////////////////////////////////////////////////////////////////////////////////////////////////////
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  // ##################################### 座標を取得 #####################################
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  glm::vec3 FrameWork::Camera::getPosition()
219
62
  {
@@ -243,4 +86,41 @@
243
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  {
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245
88
  }
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+ ```
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+
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+
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+ ##### Main.cpp
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+ ```cpp
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+
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+ //関数の外に宣言 初期値↓
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+ float cameraLookSpeed = PI / 100; //視点移動速度
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+ glm::vec3 cameraLook = glm::vec3(PI /2,PI,0);
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+
99
+
100
+
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+
102
+ if (FrameWork::windowContext->getKeyInput(GLFW_KEY_LEFT_CONTROL) > 0)
103
+ {
104
+ if (FrameWork::windowContext->getKeyInput(GLFW_KEY_LEFT) > (short)0)
105
+ {
106
+ cameraLook.x += -cameraLookSpeed;
107
+ }
108
+ else if (FrameWork::windowContext->getKeyInput(GLFW_KEY_RIGHT) > (short)0)
109
+ {
110
+ cameraLook.x += cameraLookSpeed;
111
+ }
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+
113
+ if (FrameWork::windowContext->getKeyInput(GLFW_KEY_UP) > (short)0)
114
+ {
115
+ cameraLook.y += cameraLookSpeed;
116
+ }
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+ else if (FrameWork::windowContext->getKeyInput(GLFW_KEY_DOWN) > (short)0)
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+ {
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+ cameraLook.y += -cameraLookSpeed;
120
+ }
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+ }
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+
123
+ FrameWork::Camera::setLook(glm::vec3(cos(cameraLook.x) * cos(cameraLook.y), sin(cameraLook.y), sin(cameraLook.x) * cos(cameraLook.y)));
124
+ FrameWork::Camera::setPosition(cameraPos);
125
+
246
126
  ```

2

文章を修正

2021/10/31 07:18

投稿

退会済みユーザー
title CHANGED
File without changes
body CHANGED
@@ -4,6 +4,8 @@
4
4
  参考サイト：[ https://blog.natade.net/2017/05/27/directx-opengl-d3dxmatrixrotation-glrotate/
5
5
  ](https://blog.natade.net/2017/05/27/directx-opengl-d3dxmatrixrotation-glrotate/)
6
6
 
7
+ 参考サイト： [https://learnopengl.com/Getting-started/Camera](https://learnopengl.com/Getting-started/Camera)
8
+
7
9
  ![イメージ説明](08d28edb4f3b830f74d57229b6b5d9fb.png)
8
10
 
9
11
 
@@ -203,7 +205,13 @@
203
205
  void FrameWork::Camera::setLook(glm::vec3 l)
204
206
  {
205
207
  vecLook = l; //向き
208
+ glm::vec3 up = glm::vec3(0, 1, 0);
209
+
210
+ glm::vec3 cameraDirection = glm::normalize(position - vecLook);
211
+ glm::vec3 cameraRight = glm::normalize(glm::cross(up, cameraDirection));
212
+ glm::vec3 cameraUp = glm::cross(vecLook, cameraRight);
213
+
206
- view = glm::lookAt(glm::vec3(position.x, position.y, position.z), vecLook, glm::vec3(0, 1, 0));
214
+ view = glm::lookAt(glm::vec3(position.x, position.y, position.z), position + vecLook,glm::vec3(0, 1, 0));
207
215
  }
208
216
 
209
217
  // ##################################### 座標を取得 #####################################

1

文章を修正

2021/10/28 08:26

投稿

退会済みユーザー
title CHANGED
File without changes
body CHANGED
@@ -1,4 +1,4 @@
1
- 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？
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？
2
2
 
3
3
 
4
4
  参考サイト：[ https://blog.natade.net/2017/05/27/directx-opengl-d3dxmatrixrotation-glrotate/
@@ -105,11 +105,11 @@
105
105
 
106
106
 
107
107
 
108
-
108
+ /////////////////////////////////////////////////////////////////////////////////////////////////////
109
109
  FrameWork::Camera::setLook(glm::vec3(cos(x) + 0,sin(y) + 100,sin(x) + 300));
110
110
  FrameWork::Camera::setPosition(glm::vec3(0,100,300));
111
+ //////////////////////////////////////////////////////////////////////////////////////////////////////////
111
112
 
112
-
113
113
  //Cube
114
114
  cube.shader->setEnable();
115
115
  cube.setPosition(glm::vec3(0,70,30));