camera_dragger.h

[詳解]

 
 
// Copyright(c) 2023-2025 Design Engineering Laboratory, Saitama University
// Released under the MIT license
// https://opensource.org/licenses/mit-license.php
 
#ifndef DESIGNLAB_CAMERA_DRAGGER_H_
#define DESIGNLAB_CAMERA_DRAGGER_H_
 
#include <memory>
 
#include "dxlib_camera.h"
#include "interface_dxlib_draggable.h"
#include "interface_dxlib_wheel_handler.h"
 
 
namespace designlab
{
 
class CameraDragger final : public IDxlibDraggable, public IDxlibWheelHandler
{
public:
    explicit CameraDragger(const std::shared_ptr<DxlibCamera> camera);
 
    bool IsDraggable(
        [[maybe_unused]] int cursor_x,
        [[maybe_unused]] int cursor_y) const override
    {
        // カメラの操作はどこをクリックしても可能．
        return true;
    };
 
    bool IsDragged() const override { return is_dragged_; };
 
    void SetDragged(bool is_dragged) override { is_dragged_ = is_dragged; };
 
    void DraggedAction(
        int cursor_dif_x, int cursor_dif_y,
        unsigned int mouse_key_bit) override;
 
    bool CanHandleWheel(
        [[maybe_unused]] int cursor_x,
        [[maybe_unused]] int cursor_y) const override
    {
        // カメラの操作はどこをクリックしても可能．
        return true;
    };
 
    void RotMouseWheel(int rot) const override;
 
private:
    const float kCameraZoomSpeed{ 50.f };  
 
    const float kCameraMoveSpeed{ 0.007f };  
 
    const float kCameraTargetMoveSpeed{ 3.f };  
 
    const double kMouseMoveMargin{ 0.5 };
 
    const std::shared_ptr<DxlibCamera> camera_ptr_;
 
    bool is_dragged_{ false };  
};
 
}  // namespace designlab
 
 
#endif  // DESIGNLAB_CAMERA_DRAGGER_H_