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/******************************************************************************
* Copyright (c) 2007 Hewlett-Packard Development Company, L.P.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or
* substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE
******************************************************************************/
/************************************************************************
* SVN MACROS
*
* $LastChangedDate: 2008-07-10 15:23:21 +0530 (Thu, 10 Jul 2008) $
* $Revision: 556 $
* $Author: sharmnid $
*
************************************************************************/
#ifndef __LTKPREPROCESSORINTERFACE_H
#define __LTKPREPROCESSORINTERFACE_H
#include "LTKTraceGroup.h"
class LTKPreprocessorInterface;
typedef int (LTKPreprocessorInterface::*FN_PTR_PREPROCESSOR)(const LTKTraceGroup& inTraceGroup, LTKTraceGroup& outTraceGroup);
class LTKPreprocessorInterface
{
public:
/**
* This function normalizes the size for a trace group.
* <p> If the width of the stroke set is more than the threshold,
* they are normalised by width and scale; otherwise they are traslated to the
* center if bounding box determined by scale. </p>
*
* @param traceGroup Object of LTKTraceGroup
*
* @return void
*/
/**
* @name Getter Functions
*/
// @{
/**
* The function get the function name as the argument and return the address of the
* function.
* @param funName
*
* @return address of the function.
*/
virtual FN_PTR_PREPROCESSOR getPreprocptr(const string &funName) = 0;
/**
* @name Setter Functions
*/
// @{
virtual int normalizeSize(const LTKTraceGroup& inTraceGroup, LTKTraceGroup& outTraceGroup) = 0;
/**
* This function is called on a trace group to normalize its orientation
*
* @param inTraceGroup input trace group that must be normalized.
* @param outTraceGroup The trace group whose traces are normalized.
*
* @return void
*
*/
virtual int normalizeOrientation(const LTKTraceGroup& inTraceGroup, LTKTraceGroup& outTraceGroup) = 0;
/**
* @param traceGroup Object of LTKTracegroup
* @param traceDimension Average number of points expected in a trace
*
* @return void
*/
virtual int duplicatePoints(const LTKTraceGroup& traceGroup, int traceDimension) = 0;
/**
* This function shifts the origin of eack stroke to the centroid of the stroke
*
* @param inTraceGroup Trace group input, whose traces have to be centered.
* @param outTraceGroup The output trace group that whose traces are centered.
*
* @return void
*/
virtual int centerTraces(const LTKTraceGroup& inTraceGroup, LTKTraceGroup& outTraceGroup) = 0;
/**
* This function dehooks the given tracegroup
*
* @param inTraceGroup Tracegroup which has to be dehooked
* @param outTraceGroup The dehooked tracegroup
*
* @return void
*/
virtual int dehookTraces(const LTKTraceGroup& inTraceGroup, LTKTraceGroup& outTraceGroup) = 0;
/**
* This function removes consecutively repeating x, y coordinates (thinning)
*
* @param inTraceGroup trace group to be thinned
* @param outTraceGroup thinned trace group
*
* @return SUCCESS on successful thinning operation
*/
virtual int removeDuplicatePoints(const LTKTraceGroup& inTraceGroup, LTKTraceGroup& outTraceGroup) = 0;
/**
* This function calculates the slopes of the strokes w.r.t maximum and minimum coordinates
* and reorders the strokes.
*
* @param inTraceGroup Object of LTKTraceGroup, whose traces have to be ordered.
* @param outTraceGroup The output trace group, whose traces are ordered.
*
* @return void
*/
virtual int orderTraces(const LTKTraceGroup& inTraceGroup, LTKTraceGroup& outTraceGroup) = 0;
/**
* This function reorients the given stroke
*
* @param inTrace Trace which has to be reversed
* @param outTrace The reversed trace
*
* @return void
*/
virtual int reverseTrace(const LTKTrace& inTrace, LTKTrace& outTrace) = 0;
/**
* This function takes trace by trace from a trace group and resamples the points in them
* according to the trace dimension.
*
* @param inTrace The input trace from trace group
* @param resamplePoints The ideal number of points to which the trace must be resampled.
* @param outTrace The output trace that has resampled points.
*
* @return void
*/
virtual int resampleTrace(const LTKTrace& inTrace, int resamplePoint, LTKTrace& outTrace) = 0;
/**
* This function smoothens the incoming tracegroup using moving average technique
*
* @param inTraceGroup The input trace group
* @param filterLength is the number of points used for smoothening a single point
* @param outTraceGrouo The output tracegroup that has smoothened points.
*
* @return SUCCESS
*/
virtual int smoothenTraceGroup(const LTKTraceGroup& inTraceGroup, LTKTraceGroup& outTraceGroup) = 0;
virtual int resampleTraceGroup(const LTKTraceGroup& inTraceGroup,
LTKTraceGroup& outTraceGroup)=0;
virtual int getQuantisedSlope(const LTKTrace& trace, vector<int>& qSlopeVector) = 0;
virtual int determineDominantPoints(const vector<int>& qSlopeVector, int flexibilityIndex, vector<int>& dominantPts) = 0;
virtual void setCaptureDevice(const LTKCaptureDevice& captureDevice) = 0;
virtual void setScreenContext(const LTKScreenContext& screenContext) = 0;
virtual bool getPreserveAspectRatio()const = 0 ;
virtual float getAspectRatioThreshold()const= 0 ;
virtual bool getPreserveRealtiveYPosition()const = 0 ;
virtual float getSizeThreshold()const =0 ;
virtual float getDotThreshold()const = 0 ;
virtual string getResamplingMethod()const = 0 ;
virtual const int getTraceDimension()const = 0 ;
virtual const int getFilterLength()const = 0 ;
virtual ~LTKPreprocessorInterface(){};
};
#endif
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