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ResInsight/Fwk/VizFwk/LibViewing/cvfManipulatorTrackball.h

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C++

//##################################################################################################
//
// Custom Visualization Core library
// Copyright (C) 2011-2013 Ceetron AS
//
// This library may be used under the terms of either the GNU General Public License or
// the GNU Lesser General Public License as follows:
//
// GNU General Public License Usage
// This library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
// for more details.
//
// GNU Lesser General Public License Usage
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
// for more details.
//
//##################################################################################################
#pragma once
#include "cvfObject.h"
#include "cvfQuat.h"
#include "cvfMatrix4.h"
namespace cvf {
class Camera;
//==================================================================================================
//
//
//
//==================================================================================================
class ManipulatorTrackball : public Object
{
public:
enum NavigationType
{
NONE,
PAN,
WALK,
ZOOM,
ROTATE
};
public:
ManipulatorTrackball();
~ManipulatorTrackball();
void setCamera(Camera* camera);
void setRotationPoint(const Vec3d& rotPoint);
void setView(const Vec3d& alongDirection, const Vec3d& upDirection);
NavigationType activeNavigation() const;
void startNavigation(NavigationType navigationType, int x, int y);
bool updateNavigation(int x, int y);
void endNavigation();
void setRotationSensitivity(double scaleFactor);
private:
bool pan(int posX, int posY);
bool walk(int posX, int posY);
bool zoom(int posX, int posY);
bool rotate(int posX, int posY);
static Quatd trackballRotation(double oldPosX, double oldPosY, double newPosX, double newPosY, const Mat4d& currViewMatrix, double sensitivityFactor);
static Vec3d projectToSphere(double radius, double posX, double posY);
private:
ref<Camera> m_camera; // Camera that should be manipulated
Vec3d m_rotationPoint; // Rotation point. Used both for rotations and to control pan/walk speed
NavigationType m_activeNavigation; // The active navigation type
int m_lastPosX; // Previous mouse position
int m_lastPosY;
Vec3d m_walkStartCameraPos; // Starting camera position for a walk operation
double m_walkSensitivity; // Scale factor for sensitivity of rotations
double m_rotateSensitivity; // Scale factor for walk sensitivity
};
}