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42 lines
930 B
C++
42 lines
930 B
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef EIGEN_TRACKBALL_H
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#define EIGEN_TRACKBALL_H
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#include <Eigen/Geometry>
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class Camera;
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class Trackball {
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public:
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enum Mode { Around, Local };
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Trackball() : mpCamera(0) {}
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void start(Mode m = Around) {
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mMode = m;
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mLastPointOk = false;
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}
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void setCamera(Camera* pCam) { mpCamera = pCam; }
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void track(const Eigen::Vector2i& newPoint2D);
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protected:
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bool mapToSphere(const Eigen::Vector2i& p2, Eigen::Vector3f& v3);
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Camera* mpCamera;
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Eigen::Vector3f mLastPoint3D;
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Mode mMode;
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bool mLastPointOk;
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};
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#endif // EIGEN_TRACKBALL_H
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