Method ProcessCameraInput

PathTracer/Editor.cpp:1053–1126

}

void Editor::ProcessCameraInput()
{
    // Calculate delta time
    auto currentTime = std::chrono::steady_clock::now();
    float deltaTime = std::chrono::duration<float>(currentTime - m_LastFrameTime).count();
    m_LastFrameTime = currentTime;
    
    bool cameraChanged = false;
    
    // Mouse rotation (only when dragging)
    if (ImGui::IsMouseClicked(ImGuiMouseButton_Left))
    {
        m_IsDraggingViewport = true;
        ImVec2 mousePos = ImGui::GetMousePos();
        m_LastMousePos = {mousePos.x, mousePos.y};
    }
    
    if (m_IsDraggingViewport && ImGui::IsMouseDown(ImGuiMouseButton_Left))
    {
        ImVec2 mousePos = ImGui::GetMousePos();
        glm::vec2 currentMousePos = {mousePos.x, mousePos.y};
        glm::vec2 deltaPos = currentMousePos - m_LastMousePos;
        
        m_Camera.ProcessMouseMovement(deltaPos.x, deltaPos.y);

        if (m_LastMousePos != currentMousePos)
            cameraChanged = true;

        m_LastMousePos = currentMousePos;
    }

    // Keyboard movement (WASD + space/left shift for up/down)
    if (m_IsDraggingViewport && ImGui::IsKeyDown(ImGuiKey_W))
    {
        m_Camera.ProcessKeyboard(FlyCamera::Direction::FORWARD, deltaTime);
        cameraChanged = true;
    }
    if (m_IsDraggingViewport && ImGui::IsKeyDown(ImGuiKey_S))
    {
        m_Camera.ProcessKeyboard(FlyCamera::Direction::BACKWARD, deltaTime);
        cameraChanged = true;
    }
    if (m_IsDraggingViewport && ImGui::IsKeyDown(ImGuiKey_A))
    {
        m_Camera.ProcessKeyboard(FlyCamera::Direction::LEFT, deltaTime);
        cameraChanged = true;
    }
    if (m_IsDraggingViewport && ImGui::IsKeyDown(ImGuiKey_D))
    {
        m_Camera.ProcessKeyboard(FlyCamera::Direction::RIGHT, deltaTime);
        cameraChanged = true;
    }
    if (m_IsDraggingViewport && ImGui::IsKeyDown(ImGuiKey_Space))
    {
        m_Camera.ProcessKeyboard(FlyCamera::Direction::UP, deltaTime);
        cameraChanged = true;
    }
    if (m_IsDraggingViewport && ImGui::IsKeyDown(ImGuiKey_LeftShift))