|  | // This file is part of Eigen, a lightweight C++ template library | 
|  | // for linear algebra. | 
|  | // | 
|  | // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr> | 
|  | // | 
|  | // This Source Code Form is subject to the terms of the Mozilla | 
|  | // Public License v. 2.0. If a copy of the MPL was not distributed | 
|  | // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. | 
|  |  | 
|  | #ifndef EIGEN_CAMERA_H | 
|  | #define EIGEN_CAMERA_H | 
|  |  | 
|  | #include <Eigen/Geometry> | 
|  | #include <QObject> | 
|  | // #include <frame.h> | 
|  |  | 
|  | class Frame { | 
|  | public: | 
|  | EIGEN_MAKE_ALIGNED_OPERATOR_NEW | 
|  |  | 
|  | inline Frame(const Eigen::Vector3f& pos = Eigen::Vector3f::Zero(), const Eigen::Quaternionf& o = Eigen::Quaternionf()) | 
|  | : orientation(o), position(pos) {} | 
|  | Frame lerp(float alpha, const Frame& other) const { | 
|  | return Frame((1.f - alpha) * position + alpha * other.position, orientation.slerp(alpha, other.orientation)); | 
|  | } | 
|  |  | 
|  | Eigen::Quaternionf orientation; | 
|  | Eigen::Vector3f position; | 
|  | }; | 
|  |  | 
|  | class Camera { | 
|  | public: | 
|  | EIGEN_MAKE_ALIGNED_OPERATOR_NEW | 
|  |  | 
|  | Camera(void); | 
|  |  | 
|  | Camera(const Camera& other); | 
|  |  | 
|  | virtual ~Camera(); | 
|  |  | 
|  | Camera& operator=(const Camera& other); | 
|  |  | 
|  | void setViewport(uint offsetx, uint offsety, uint width, uint height); | 
|  | void setViewport(uint width, uint height); | 
|  |  | 
|  | inline uint vpX(void) const { return mVpX; } | 
|  | inline uint vpY(void) const { return mVpY; } | 
|  | inline uint vpWidth(void) const { return mVpWidth; } | 
|  | inline uint vpHeight(void) const { return mVpHeight; } | 
|  |  | 
|  | inline float fovY(void) const { return mFovY; } | 
|  | void setFovY(float value); | 
|  |  | 
|  | void setPosition(const Eigen::Vector3f& pos); | 
|  | inline const Eigen::Vector3f& position(void) const { return mFrame.position; } | 
|  |  | 
|  | void setOrientation(const Eigen::Quaternionf& q); | 
|  | inline const Eigen::Quaternionf& orientation(void) const { return mFrame.orientation; } | 
|  |  | 
|  | void setFrame(const Frame& f); | 
|  | const Frame& frame(void) const { return mFrame; } | 
|  |  | 
|  | void setDirection(const Eigen::Vector3f& newDirection); | 
|  | Eigen::Vector3f direction(void) const; | 
|  | void setUp(const Eigen::Vector3f& vectorUp); | 
|  | Eigen::Vector3f up(void) const; | 
|  | Eigen::Vector3f right(void) const; | 
|  |  | 
|  | void setTarget(const Eigen::Vector3f& target); | 
|  | inline const Eigen::Vector3f& target(void) { return mTarget; } | 
|  |  | 
|  | const Eigen::Affine3f& viewMatrix(void) const; | 
|  | const Eigen::Matrix4f& projectionMatrix(void) const; | 
|  |  | 
|  | void rotateAroundTarget(const Eigen::Quaternionf& q); | 
|  | void localRotate(const Eigen::Quaternionf& q); | 
|  | void zoom(float d); | 
|  |  | 
|  | void localTranslate(const Eigen::Vector3f& t); | 
|  |  | 
|  | /** Setup OpenGL matrices and viewport */ | 
|  | void activateGL(void); | 
|  |  | 
|  | Eigen::Vector3f unProject(const Eigen::Vector2f& uv, float depth, const Eigen::Matrix4f& invModelview) const; | 
|  | Eigen::Vector3f unProject(const Eigen::Vector2f& uv, float depth) const; | 
|  |  | 
|  | protected: | 
|  | void updateViewMatrix(void) const; | 
|  | void updateProjectionMatrix(void) const; | 
|  |  | 
|  | protected: | 
|  | uint mVpX, mVpY; | 
|  | uint mVpWidth, mVpHeight; | 
|  |  | 
|  | Frame mFrame; | 
|  |  | 
|  | mutable Eigen::Affine3f mViewMatrix; | 
|  | mutable Eigen::Matrix4f mProjectionMatrix; | 
|  |  | 
|  | mutable bool mViewIsUptodate; | 
|  | mutable bool mProjIsUptodate; | 
|  |  | 
|  | // used by rotateAroundTarget | 
|  | Eigen::Vector3f mTarget; | 
|  |  | 
|  | float mFovY; | 
|  | float mNearDist; | 
|  | float mFarDist; | 
|  | }; | 
|  |  | 
|  | #endif  // EIGEN_CAMERA_H |