43 lines
943 B
C
43 lines
943 B
C
|
// 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_TRACKBALL_H
|
||
|
|
#define EIGEN_TRACKBALL_H
|
||
|
|
|
||
|
|
#include <Eigen/Geometry>
|
||
|
|
|
||
|
|
class Camera;
|
||
|
|
|
||
|
|
class Trackball
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
|
||
|
|
enum Mode {Around, Local};
|
||
|
|
|
||
|
|
Trackball() : mpCamera(0) {}
|
||
|
|
|
||
|
|
void start(Mode m = Around) { mMode = m; mLastPointOk = false; }
|
||
|
|
|
||
|
|
void setCamera(Camera* pCam) { mpCamera = pCam; }
|
||
|
|
|
||
|
|
void track(const Eigen::Vector2i& newPoint2D);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
|
||
|
|
bool mapToSphere( const Eigen::Vector2i& p2, Eigen::Vector3f& v3);
|
||
|
|
|
||
|
|
Camera* mpCamera;
|
||
|
|
Eigen::Vector3f mLastPoint3D;
|
||
|
|
Mode mMode;
|
||
|
|
bool mLastPointOk;
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // EIGEN_TRACKBALL_H
|