/**********************************************************************************
* AUTHOR : Bharath A.
* DATE : 03-SEP-2007
* NAME : affineTransform
* DESCRIPTION : scales the tracegroup according to the x and y scale factors.
* After scaling, the "referenceCorner" of the tracegroup is translated to
* (translateToX,translateToY)
* ARGUMENTS : xScaleFactor - factor by which x dimension has to be scaled
* yScaleFactor - factor by which y dimension has to be scaled
* referenceCorner - corner to be retained after scaling and moved to (translateToX,translateToY)
* RETURNS : SUCCESS on successful scale operation
* NOTES :
* CHANGE HISTROY
* Author Date Description of change
*************************************************************************************/
int LTKTraceGroup::affineTransform(float xScaleFactor,float yScaleFactor,
float translateToX,float translateToY,
TGCORNER referenceCorner)
{
LOG( LTKLogger::LTK_LOGLEVEL_DEBUG) <<
"Enter: LTKTraceGroup::translateTo()"<<endl;
LTKTrace trace;
vector<LTKTrace> scaledTracesVec; // holds the scaled traces
floatVector scaledXVec; // scaled x channel values of a trace
floatVector scaledYVec; // scaled y channel values of a trace
float x, y;
float xReference, yReference;
float xMin=0.0f;
float yMin=0.0f;
float xMax=0.0f;
float yMax=0.0f;
int traceIndex, index;
int errorCode;
int numPoints;
if(xScaleFactor <= 0)
{
LOG( LTKLogger::LTK_LOGLEVEL_ERR) <<
"Error: "<<EINVALID_X_SCALE_FACTOR <<": "<<
getErrorMessage(EINVALID_X_SCALE_FACTOR) <<
"LTKTraceGroup::scale()"<<endl;
LTKReturnError(EINVALID_X_SCALE_FACTOR);
}
if(yScaleFactor <= 0)
{
LOG( LTKLogger::LTK_LOGLEVEL_ERR) <<
"Error: "<<EINVALID_X_SCALE_FACTOR <<": "<<
getErrorMessage(EINVALID_X_SCALE_FACTOR) <<
"LTKTraceGroup::scale()"<<endl;
LTKReturnError(EINVALID_Y_SCALE_FACTOR);
}
if((errorCode = getBoundingBox(xMin,yMin,xMax,yMax))!=SUCCESS)
{
LOG( LTKLogger::LTK_LOGLEVEL_ERR) <<
"Error: LTKTraceGroup::affineTransform()"<<endl;
LTKReturnError(errorCode);
}
switch(referenceCorner)
{
case XMIN_YMIN:
xReference=xMin;
yReference=yMin;
break;
case XMIN_YMAX:
xReference=xMin;
yReference=yMax;
break;
case XMAX_YMIN:
xReference=xMax;
yReference=yMin;
break;
case XMAX_YMAX:
xReference=xMax;
yReference=yMax;
break;
default: break;//define an exception
}
int numTraces = m_traceVector.size();
for(traceIndex=0; traceIndex < numTraces; ++traceIndex)
{
getTraceAt(traceIndex, trace);
floatVector xVec;
//no error handling required as the bounding box is found
trace.getChannelValues(X_CHANNEL_NAME, xVec);
floatVector yVec;
trace.getChannelValues(Y_CHANNEL_NAME, yVec);
numPoints = xVec.size();
for(index=0; index < numPoints; index++)
{
//the additive term is to translate back the scaled tracegroup
//so that the corner asked for is preserved at the destination
//(translateToX,translateToY)
x = ( (xVec.at(index) * xScaleFactor)/m_xScaleFactor) +
(translateToX - (xReference*(xScaleFactor/m_xScaleFactor)) );
scaledXVec.push_back(x);
//the additive term is to translate back the scaled tracegroup
//so that the corner asked for is preserved at the destination
//(translateToX,translateToY)
y= ( (yVec.at(index) * yScaleFactor)/m_yScaleFactor) +
(translateToY - (yReference*(yScaleFactor/m_yScaleFactor)));
scaledYVec.push_back(y);
}
trace.reassignChannelValues(X_CHANNEL_NAME,scaledXVec);
trace.reassignChannelValues(Y_CHANNEL_NAME,scaledYVec);
scaledXVec.clear();
scaledYVec.clear();
scaledTracesVec.push_back(trace);
}
m_traceVector = scaledTracesVec;
m_xScaleFactor = xScaleFactor;
m_yScaleFactor = yScaleFactor;
LOG( LTKLogger::LTK_LOGLEVEL_DEBUG) <<
"Enter: LTKTraceGroup::affineTransform()"<<endl;
return SUCCESS;
}
/******************************************************************************
* AUTHOR : Bharath A.
* DATE : 03-SEP-2007
* NAME : translateTo
* DESCRIPTION : translates the tracegroup so that the "referenceCorner" is
moved to (x,y)
* ARGUMENTS : x: x value of point to which referenceCorner has to be moved
* y: y value of point to which referenceCorner has to be moved
* referenceCorner - the reference corner in the tracegroup that
has to be moved to (x,y)
* RETURNS : SUCCESS on successful translation operation
* NOTES :
* CHANGE HISTROY
* Author Date Description of change
*******************************************************************************/
int LTKTraceGroup::translateTo(float x,float y,TGCORNER referenceCorner)
{
LOG( LTKLogger::LTK_LOGLEVEL_DEBUG) <<
"Enter: LTKTraceGroup::translateTo()"<<endl;
LTKTrace trace;
vector<LTKTrace> translatedTracesVec; // holds the translated traces
floatVector translatedXVec; // translated x channel values of a trace
floatVector translatedYVec; // translated y channel values of a trace
float xValue, yValue;
float xReference, yReference;
float xMin=0.0f;
float yMin=0.0f;
float xMax=0.0f;
float yMax=0.0f;
int errorCode;
int traceIndex, index;
int numPoints;
if((errorCode = getBoundingBox(xMin,yMin,xMax,yMax))!=SUCCESS)
{
LOG( LTKLogger::LTK_LOGLEVEL_ERR) <<
"Error: LTKTraceGroup::translateTo()"<<endl;
LTKReturnError(errorCode);
}
switch(referenceCorner)
{
case XMIN_YMIN:
xReference=xMin;
yReference=yMin;
break;
case XMIN_YMAX:
xReference=xMin;
yReference=yMax;
break;
case XMAX_YMIN:
xReference=xMax;
yReference=yMin;
break;
case XMAX_YMAX:
xReference=xMax;
yReference=yMax;
break;
default: break;//define an exception
}
int numTraces = getNumTraces();
for(traceIndex=0; traceIndex < numTraces; ++traceIndex)
{
getTraceAt(traceIndex, trace);
floatVector xVec;
//no error handling required as the bounding box is found
trace.getChannelValues(X_CHANNEL_NAME, xVec);
floatVector yVec;
trace.getChannelValues(Y_CHANNEL_NAME, yVec);
numPoints = xVec.size();
for(index=0; index < numPoints; index++)
{
xValue=xVec.at(index)+(x-xReference);
translatedXVec.push_back(xValue);
yValue=yVec.at(index)+(y-yReference);
translatedYVec.push_back(yValue);
}
trace.reassignChannelValues(X_CHANNEL_NAME,translatedXVec);
trace.reassignChannelValues(Y_CHANNEL_NAME,translatedYVec);
translatedXVec.clear();
translatedYVec.clear();
translatedTracesVec.push_back(trace);
}
m_traceVector=translatedTracesVec;
LOG( LTKLogger::LTK_LOGLEVEL_DEBUG) <<
"Exit: LTKTraceGroup::translateTo()"<<endl;
return SUCCESS;
}
