ModelInteractorLogic.h

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#pragma once

#include <map>

#include "Open3D/Visualization/Rendering/RendererHandle.h"
#include "Open3D/Visualization/Rendering/RotationInteractorLogic.h"

namespace open3d {

namespace visualization {

class Scene;

class ModelInteractorLogic : public RotationInteractorLogic {
    using Super = RotationInteractorLogic;

public:
    ModelInteractorLogic(visualization::Scene* scene,
                         visualization::Camera* camera,
                         double min_far_plane);
    virtual ~ModelInteractorLogic();

    void SetBoundingBox(
            const geometry::AxisAlignedBoundingBox& bounds) override;

    void SetModel(GeometryHandle axes,
                  const std::vector<GeometryHandle>& objects);

    void Rotate(int dx, int dy) override;
    void RotateZ(int dx, int dy) override;
    void Dolly(int dy, DragType drag_type) override;
    void Pan(int dx, int dy) override;

    void StartMouseDrag() override;
    void UpdateMouseDragUI() override;
    void EndMouseDrag() override;

private:
    Scene* scene_;
    GeometryHandle axes_;
    std::vector<GeometryHandle> model_;
    bool is_axes_visible_;

    geometry::AxisAlignedBoundingBox bounds_at_mouse_down_;
    std::map<GeometryHandle, Camera::Transform> transforms_at_mouse_down_;

    void UpdateBoundingBox(const Camera::Transform& t);
};

}  // namespace visualization
}  // namespace open3d