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backlash_comp.h
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backlash_comp.h
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/*
* backlash_comp.h
* PHD Guiding
*
* Created by Bruce Waddington
* Copyright (c) 2015 Bruce Waddington and Andy Galasso
* All rights reserved.
*
* This source code is distributed under the following "BSD" license
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* Neither the name of Bret McKee, Dad Dog Development,
* Craig Stark, Stark Labs nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef BACKLASH_COMP_H_INCLUDED
#define BACKLASH_COMP_H_INCLUDED
// Encapsulated struct for handling Dec backlash measurement
class BacklashTool
{
int m_pulseWidth;
int m_stepCount;
int m_northPulseCount;
int m_restoreCount;
int m_acceptedMoves;
double m_lastClearRslt;
double m_lastDecGuideRate;
double m_backlashResultPx; // units of pixels
int m_backlashResultMs;
double m_northRate;
PHD_Point m_lastMountLocation;
PHD_Point m_startingPoint;
PHD_Point m_markerPoint;
PHD_Point m_endSouth;
wxString m_lastStatus;
Scope *m_scope;
std::vector<double> m_northBLSteps;
std::vector<double> m_southBLSteps;
public:
enum BLT_STATE
{
BLT_STATE_INITIALIZE,
BLT_STATE_CLEAR_NORTH,
BLT_STATE_STEP_NORTH,
BLT_STATE_STEP_SOUTH,
BLT_STATE_ABORTED,
BLT_STATE_TEST_CORRECTION,
BLT_STATE_RESTORE,
BLT_STATE_WRAPUP,
BLT_STATE_COMPLETED
} m_bltState;
enum MeasurementConstants // To control the behavior of the measurement process
{
BACKLASH_MIN_COUNT = 3,
BACKLASH_EXPECTED_DISTANCE = 4,
MAX_CLEARING_STEPS = 100,
NORTH_PULSE_SIZE = 500,
MAX_NORTH_PULSES = 8000,
TRIAL_TOLERANCE = 2
};
enum MeasurementResults
{
MEASUREMENT_INVALID,
MEASUREMENT_IMPAIRED,
MEASUREMENT_VALID
} m_Rslt;
public:
BacklashTool();
void StartMeasurement();
void StopMeasurement();
void DecMeasurementStep(const PHD_Point& currentLoc);
void CleanUp();
BLT_STATE GetBltState() const { return m_bltState; }
MeasurementResults GetMeasurementQuality() const { return m_Rslt; }
double GetBacklashResultPx() const { return m_backlashResultPx; }
int GetBacklashResultMs() const { return m_backlashResultMs; }
wxString GetLastStatus() const { return m_lastStatus; }
void SetBacklashPulse(int amt) { m_pulseWidth = amt; }
void ShowGraph(wxDialog *pGA);
const std::vector<double>& GetNorthSteps() const { return m_northBLSteps; }
const std::vector<double>& GetSouthSteps() const { return m_southBLSteps; }
};
class BacklashComp
{
bool m_compActive;
int m_lastDirection;
bool m_justCompensated;
int m_pulseWidth;
Mount *m_pMount;
public:
BacklashComp(Mount *theMount);
int GetBacklashPulse() const { return m_pulseWidth; }
void SetBacklashPulse(int ms);
void EnableBacklashComp(bool enable);
bool IsEnabled() const { return m_compActive; }
int GetBacklashComp(int dir, double yDist);
void HandleOverShoot(int pulseSize);
void Reset();
};
#endif