Product Idealization Transformations(Implementation)

double pwb::total_diagonal( double width , double length ){

return( sqrt( width*width + length*length ) );

}

double pwb :: width( ListOfxy_coordinates *anOutline )

{

double x , y , xMax , xMin , yMax , yMin;

double deltaX , deltaY;

xMax = anOutline->get(0)->x();

xMin = xMax;

yMax = anOutline->get(0)->y();

yMin = yMax;

for( int i = 0 ; i < anOutline->size() ; i++ )

{

x = anOutline->get(i)->x();

if( x < xMin ) xMin = x;

if( x > xMax ) xMax = x;

y = anOutline->get(i)->y();

if( y < yMin ) yMin = y;

if( y > yMax ) yMax = y;

}

deltaX = xMax - xMin;

deltaY = yMax - yMin;

if( deltaX <= deltaY ) return( deltaX );

else return( deltaY );

}

Previous slide

Next slide

Back to first slide

View graphic version

• However, the EXPRESS to C++ compiler does not automatically generate the appropriate access functions from the WHERE rules, and therefore they were implemented manually for TIGER.

• This slide shows two possible member functions created from wr3 and wr1, respectively.

• The first member function (pwb::width) can be used to obtain the value of the width from the outline, and the second (pwb::total_diagonal) to calculate the total diagonal from the width and the length.