ViewInterpolate.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
// CV_DB_LIB
#include <ecvViewportParameters.h>
 
class ecvViewportParameters;
class ccPolyline;
 
namespace cloudViewer {
 
class ViewInterpolate {
public:
    ViewInterpolate(const ecvViewportParameters& view1,
                    const ecvViewportParameters& view2,
                    unsigned int stepCount = 0);
 
    void setSmoothTrajectory(ccPolyline* smoothTrajectory,
                             ccPolyline* smoothTrajectoryReversed,
                             unsigned i1,
                             unsigned i2,
                             PointCoordinateType length);
 
    inline const ecvViewportParameters& view1() const { return m_view1; }
    // Returns the second viewport object
    inline const ecvViewportParameters& view2() const { return m_view2; }
 
    bool interpolate(ecvViewportParameters& a_returned_viewport,
                     double ratio) const;
 
    bool nextView(ecvViewportParameters& a_returned_viewport);
 
    inline unsigned int currentStep() { return m_currentStep; }
    inline void setCurrentStep(unsigned int step) { m_currentStep = step; }
 
    inline unsigned int maxStep() { return m_totalSteps; }
    inline void setMaxStep(unsigned int stepCount) { m_totalSteps = stepCount; }
 
    inline void reset() { m_currentStep = 0; }
 
private:
    const ecvViewportParameters& m_view1;
    const ecvViewportParameters& m_view2;
 
    unsigned int m_totalSteps;
    unsigned int m_currentStep;
 
    ccPolyline *smoothTrajectory, *smoothTrajectoryReversed;
    unsigned smoothTrajStartIndex, smoothTrajStopIndex, smoothTrajCurrentIndex;
    PointCoordinateType smoothSegmentLength, smoothCurrentLength;
};
 
}  // namespace cloudViewer