From 0d1fae46c9d8e6a276c6cbc6d3723695f2ca3f5d Mon Sep 17 00:00:00 2001
From: "Benedikt S. Vogler" <developer@benediktsvogler.com>
Date: Thu, 10 Jul 2025 13:48:22 +0200
Subject: [PATCH] add rotation keys

q and e key to rotate camera along the Z axis
---
 .gitignore                          | 3 ++-
 src/GUIManager.cpp                  | 2 ++
 src/Renderer.cpp                    | 6 ++++++
 src/vulkan/Window.h                 | 2 +-
 src/vulkan/windowing/GLFWWindow.cpp | 6 ++++--
 src/vulkan/windowing/GLFWWindow.h   | 2 +-
 6 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/.gitignore b/.gitignore
index 692201a..4c04705 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,4 +40,5 @@ apps/apple/VulkanSplatting/ThirdParty
 # xcuserdata under any directory is ignored
 xcuserdata/
 
-project.xcconfig
\ No newline at end of file
+project.xcconfig
+/build
diff --git a/src/GUIManager.cpp b/src/GUIManager.cpp
index 72ff7f4..e5a6a8d 100644
--- a/src/GUIManager.cpp
+++ b/src/GUIManager.cpp
@@ -89,6 +89,8 @@ void GUIManager::buildGui() {
     ImGui::Text("WASD: move");
     ImGui::Text("Space: up");
     ImGui::Text("Shift: down");
+    ImGui::Text("Q: rotate left");
+    ImGui::Text("E: rotate right");
     ImGui::Text("Left click: capture mouse");
     ImGui::Text("ESC: release mouse");
     ImGui::Text("Mouse captured: %s", mouseCapture ? "true" : "false");
diff --git a/src/Renderer.cpp b/src/Renderer.cpp
index fe7e4e4..afbe8f7 100644
--- a/src/Renderer.cpp
+++ b/src/Renderer.cpp
@@ -75,6 +75,12 @@ void Renderer::handleInput() {
             window->mouseCapture(false);
             guiManager.mouseCapture = false;
         }
+        if (keys[7]) {
+            camera.rotation = glm::rotate(camera.rotation, -0.05f, glm::vec3(0.0f, 0.0f, 1.0f));
+        }
+        if (keys[8]) {
+            camera.rotation = glm::rotate(camera.rotation, 0.05f, glm::vec3(0.0f, 0.0f, 1.0f));
+        }
         if (direction != glm::vec3(0.0f, 0.0f, 0.0f)) {
             direction = glm::normalize(direction);
             camera.position += (glm::mat4_cast(camera.rotation) * glm::vec4(direction, 1.0f)).xyz() * 0.3f;
diff --git a/src/vulkan/Window.h b/src/vulkan/Window.h
index 71932d0..1124c72 100644
--- a/src/vulkan/Window.h
+++ b/src/vulkan/Window.h
@@ -19,7 +19,7 @@ class Window {
 
     virtual std::array<double, 2> getCursorTranslation() { return {0, 0}; }
 
-    virtual std::array<bool, 7> getKeys() { return {false, false, false, false, false, false, false}; }
+    virtual std::array<bool, 9> getKeys() { return {false, false, false, false, false, false, false, false, false}; }
 
     virtual void mouseCapture(bool capture) { }
 
diff --git a/src/vulkan/windowing/GLFWWindow.cpp b/src/vulkan/windowing/GLFWWindow.cpp
index 576982d..a93ced4 100644
--- a/src/vulkan/windowing/GLFWWindow.cpp
+++ b/src/vulkan/windowing/GLFWWindow.cpp
@@ -53,7 +53,7 @@ std::array<double, 2> GLFWWindow::getCursorTranslation() {
     return translation;
 }
 
-std::array<bool, 7> GLFWWindow::getKeys() {
+std::array<bool, 9> GLFWWindow::getKeys() {
     return {
         glfwGetKey(static_cast<GLFWwindow *>(window), GLFW_KEY_W) == GLFW_PRESS,
         glfwGetKey(static_cast<GLFWwindow *>(window), GLFW_KEY_A) == GLFW_PRESS,
@@ -61,7 +61,9 @@ std::array<bool, 7> GLFWWindow::getKeys() {
         glfwGetKey(static_cast<GLFWwindow *>(window), GLFW_KEY_D) == GLFW_PRESS,
         glfwGetKey(static_cast<GLFWwindow *>(window), GLFW_KEY_SPACE) == GLFW_PRESS,
         glfwGetKey(static_cast<GLFWwindow *>(window), GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS,
-        glfwGetKey(static_cast<GLFWwindow *>(window), GLFW_KEY_ESCAPE) == GLFW_PRESS
+        glfwGetKey(static_cast<GLFWwindow *>(window), GLFW_KEY_ESCAPE) == GLFW_PRESS,
+        glfwGetKey(static_cast<GLFWwindow *>(window), GLFW_KEY_Q) == GLFW_PRESS,
+        glfwGetKey(static_cast<GLFWwindow *>(window), GLFW_KEY_E) == GLFW_PRESS
     };
 }
 
diff --git a/src/vulkan/windowing/GLFWWindow.h b/src/vulkan/windowing/GLFWWindow.h
index 25ff327..767b9e4 100644
--- a/src/vulkan/windowing/GLFWWindow.h
+++ b/src/vulkan/windowing/GLFWWindow.h
@@ -17,7 +17,7 @@ class GLFWWindow final : public Window {
 
     std::array<double, 2> getCursorTranslation() override;
 
-    std::array<bool, 7> getKeys() override;
+    std::array<bool, 9> getKeys() override;
 
     void mouseCapture(bool capture) override;