100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
#ifndef CCAMERA_H
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#define CCAMERA_H
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#include "CFrustumPlanes.h"
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#include <Common/CAABox.h>
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#include <Common/CMatrix4f.h>
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#include <Common/CRay.h>
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#include <Common/CVector2i.h>
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#include <Common/CVector3f.h>
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#include <Common/types.h>
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#include <Common/EKeyInputs.h>
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#include <Common/EMouseInputs.h>
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enum ECameraMoveMode
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{
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eFreeCamera, eOrbitCamera
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};
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/* This class uses a lot of mutable members as an optimization so that they can
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* be updated as infrequently as possible (eg only when the values are requested
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* the next time after changes are made) while still always returning the correct
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* value via the const get functions. They are not modified in const functions
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* beyond ensuring that all data is valid and synced with everything else (eg
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* mPosition is only modified to ensure it's correct in orbit mode given the
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* target/distance/pitch/yaw; it won't be modified as a camera snap in a const
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* function). */
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class CCamera
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{
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ECameraMoveMode mMode;
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mutable CVector3f mPosition;
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mutable CVector3f mDirection;
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mutable CVector3f mRightVector;
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mutable CVector3f mUpVector;
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float mAspectRatio;
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float mYaw;
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float mPitch;
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CVector3f mOrbitTarget;
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mutable float mOrbitDistance;
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float mMoveSpeed;
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float mLookSpeed;
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mutable CMatrix4f mViewMatrix;
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mutable CMatrix4f mProjectionMatrix;
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mutable CFrustumPlanes mFrustumPlanes;
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mutable bool mTransformDirty;
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mutable bool mViewDirty;
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mutable bool mProjectionDirty;
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mutable bool mFrustumPlanesDirty;
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public:
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CCamera();
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CCamera(CVector3f Position, CVector3f Target);
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void Pan(float XAmount, float YAmount);
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void Rotate(float XAmount, float YAmount);
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void Zoom(float Amount);
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void Snap(CVector3f Position);
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void ProcessKeyInput(EKeyInputs KeyFlags, double DeltaTime);
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void ProcessMouseInput(EKeyInputs KeyFlags, EMouseInputs MouseFlags, float XMovement, float YMovement);
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CRay CastRay(CVector2f DeviceCoords) const;
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void LoadMatrices() const;
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void SetMoveMode(ECameraMoveMode Mode);
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void SetOrbit(const CVector3f& OrbitTarget, float Distance);
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void SetOrbit(const CAABox& OrbitTarget, float DistScale = 4.f);
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void SetOrbitDistance(float Distance);
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// Getters
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CVector3f Position() const;
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CVector3f Direction() const;
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CVector3f UpVector() const;
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CVector3f RightVector() const;
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float Yaw() const;
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float Pitch() const;
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float FieldOfView() const;
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ECameraMoveMode MoveMode() const;
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const CMatrix4f& ViewMatrix() const;
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const CMatrix4f& ProjectionMatrix() const;
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const CFrustumPlanes& FrustumPlanes() const;
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// Setters
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void SetYaw(float Yaw);
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void SetPitch(float Pitch);
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void SetMoveSpeed(float MoveSpeed);
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void SetLookSpeed(float LookSpeed);
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void SetAspectRatio(float AspectRatio);
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// Private
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private:
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void ValidatePitch();
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void UpdateTransform() const;
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void UpdateView() const;
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void UpdateProjection() const;
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void UpdateFrustum() const;
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};
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#endif // CCAMERA_H
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