CEditorCamera.h

/*
!@
MIT License
 
Copyright (c) 2019 Skylicht Technology CO., LTD
 
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files
(the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify,
merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
This file is part of the "Skylicht Engine".
https://github.com/skylicht-lab/skylicht-engine
!#
*/
 
#pragma once
 
#include "Utils/CActivator.h"
#include "CCamera.h"
#include "Components/CComponentSystem.h"
 
namespace Skylicht
{
    class SKYLICHT_API CEditorCamera :
        public CComponentSystem,
        public IEventReceiver
    {
    public:
        enum EControlStyle
        {
            Default, 
            Maya,    
            Blender  
        };
 
    protected:
        CCamera* m_camera;

        f32 m_moveSpeed;
        
        f32 m_rotateSpeed;
        
        f32 m_zoomSpeed;

        gui::ICursorControl* m_cursorControl;

        core::position2df m_centerCursor;
        
        core::position2df m_cursorPos;

        bool m_altKeyDown;
        bool m_ctrlKeyDown;
        bool m_shiftKeyDown;
        
        bool m_leftMousePress;
        bool m_rightMousePress;
        bool m_midMousePress;

        bool m_mayaLeftMousePress;
        bool m_mayaRightMousePress;

        bool m_mouseWhell;
        float m_wheel;

        float m_pivotRotateDistance;
        
        EControlStyle m_controlStyle;
 
    public:
        CEditorCamera();
 
        virtual ~CEditorCamera();
 
        virtual void initComponent();
 
        virtual void updateComponent();
 
        virtual void endUpdate();
 
        virtual bool OnEvent(const SEvent& event);
 
        DECLARE_GETTYPENAME(CEditorCamera)
 
    public:
        inline void setRotateSpeed(float speed)
        {
            m_rotateSpeed = speed;
        }

        inline void setMoveSpeed(float speed)
        {
            m_moveSpeed = speed;
        }

        inline float getMoveSpeed()
        {
            return m_moveSpeed;
        }

        inline float getRotateSpeed()
        {
            return m_rotateSpeed;
        }

        inline float getZoomSpeed()
        {
            return m_zoomSpeed;
        }

        inline void setZoomSpeed(float z)
        {
            m_zoomSpeed = z;
        }

        inline CCamera* getCamera()
        {
            return m_camera;
        }

        inline void setControlStyle(EControlStyle style)
        {
            m_controlStyle = style;
        }

        inline EControlStyle getControlStyle()
        {
            return m_controlStyle;
        }

        inline bool isRightMousePressed()
        {
            return m_rightMousePress;
        }

        inline bool isLeftMousePressed()
        {
            return m_leftMousePress;
        }

        void setPivotRotate(const core::vector3df& pos);
        
        inline void setPivotRotateDistance(float d)
        {
            m_pivotRotateDistance = d;
        }
        
    protected:

        void fixVector(core::vector3df& v);
        
        void updateInputRotate(core::vector3df& relativeRotation, f32 timeDiff, bool useCenterPivot = false);
        
        void updateInputOffset(core::vector3df& offsetPosition, f32 timeDiff);

        void updateInputZoom(f32 timeDiff, core::vector3df& pos, const core::vector3df& moveDir);
    };
}