From a924b4dd302e5ab9d7379b4fb44e2de3d6dc5498 Mon Sep 17 00:00:00 2001
From: Linloir <3145078758@qq.com>
Date: Sun, 18 Dec 2022 13:55:17 +0800
Subject: [PATCH] [CORE][ADD] Ray class

---
 FinalProject/FinalProject.vcxproj         |  3 +++
 FinalProject/FinalProject.vcxproj.filters |  9 +++++++++
 FinalProject/ray.cpp                      | 14 ++++++++++++++
 FinalProject/ray.h                        | 23 +++++++++++++++++++++++
 4 files changed, 49 insertions(+)
 create mode 100644 FinalProject/ray.cpp
 create mode 100644 FinalProject/ray.h

diff --git a/FinalProject/FinalProject.vcxproj b/FinalProject/FinalProject.vcxproj
index e72bef0..610a83d 100644
--- a/FinalProject/FinalProject.vcxproj
+++ b/FinalProject/FinalProject.vcxproj
@@ -119,6 +119,7 @@
     <ClCompile Include="modelthumbnailwidget.cpp" />
     <ClCompile Include="pagewidget.cpp" />
     <ClCompile Include="pushbutton.cpp" />
+    <ClCompile Include="ray.cpp" />
     <ClCompile Include="renderable.cpp" />
     <ClCompile Include="roundedcornerwidget.cpp" />
     <ClCompile Include="sceneviewer.cpp" />
@@ -140,6 +141,7 @@
   </ItemGroup>
   <ItemGroup>
     <QtMoc Include="aboutpage.h" />
+    <ClInclude Include="boundary.h" />
     <ClInclude Include="camera.h" />
     <QtMoc Include="editorpage.h" />
     <QtMoc Include="framelesswindow.h" />
@@ -154,6 +156,7 @@
     <QtMoc Include="roundedcornerwidget.h" />
     <QtMoc Include="scrolllistwidget.h" />
     <QtMoc Include="modelthumbnailwidget.h" />
+    <ClInclude Include="ray.h" />
     <ClInclude Include="skybox.h" />
     <ClInclude Include="texture.h" />
     <ClInclude Include="utils.h" />
diff --git a/FinalProject/FinalProject.vcxproj.filters b/FinalProject/FinalProject.vcxproj.filters
index 345923c..902aa83 100644
--- a/FinalProject/FinalProject.vcxproj.filters
+++ b/FinalProject/FinalProject.vcxproj.filters
@@ -171,6 +171,9 @@
     <ClCompile Include="skybox.cpp">
       <Filter>Source Files\OpenGL Abstractions</Filter>
     </ClCompile>
+    <ClCompile Include="ray.cpp">
+      <Filter>Source Files\OpenGL Abstractions</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="camera.h">
@@ -218,6 +221,12 @@
     <ClInclude Include="skybox.h">
       <Filter>Header Files\OpenGL Abstractions</Filter>
     </ClInclude>
+    <ClInclude Include="boundary.h">
+      <Filter>Header Files\OpenGL Abstractions</Filter>
+    </ClInclude>
+    <ClInclude Include="ray.h">
+      <Filter>Header Files\OpenGL Abstractions</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <QtMoc Include="mainwindow.h">
diff --git a/FinalProject/ray.cpp b/FinalProject/ray.cpp
new file mode 100644
index 0000000..ffef4ad
--- /dev/null
+++ b/FinalProject/ray.cpp
@@ -0,0 +1,14 @@
+#include "ray.h"
+
+Ray Ray::toLocalSpace(glm::mat4 modelMatrix) {
+    // The model matrix is the matrix that transforms local space to world space
+    // Therefore the inverse of the model matrix transforms world space to local space
+    glm::mat4 inversedModelMatrix = glm::inverse(modelMatrix);
+    
+    // Transform the origin and direction of the ray to local space
+    glm::vec4 localOrigin = inversedModelMatrix * glm::vec4(_origin, 1.0f);
+    glm::vec4 localDirection = inversedModelMatrix * glm::vec4(_direction, 0.0f);
+    
+    // Return the new ray
+    return Ray(glm::vec3(localOrigin), glm::vec3(localDirection));
+}
\ No newline at end of file
diff --git a/FinalProject/ray.h b/FinalProject/ray.h
new file mode 100644
index 0000000..a0c2ab7
--- /dev/null
+++ b/FinalProject/ray.h
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <GLM/glm.hpp>
+
+class Ray {
+private:
+    glm::vec3 _origin;
+    glm::vec3 _direction;
+    
+public:
+    Ray() {}
+    Ray(glm::vec3 origin, glm::vec3 direction) : _origin(origin), _direction(direction) {}
+    
+public:
+    inline glm::vec3 origin() const { return _origin; }
+    inline glm::vec3 direction() const { return _direction; }
+
+    inline void setOrigin(glm::vec3 origin) { _origin = origin; }
+    inline void setDirection(glm::vec3 direction) { _direction = direction; }
+
+public:
+    Ray toLocalSpace(glm::mat4 modelMatrix);
+};
\ No newline at end of file