[vtkusers] vtkImagePlaneWidget - How to get the plane dimensions???

[dean.inglis at camris.ca]

Hi Mathieu,

you can use the three corner points of the widget's plane:

double* o = widget->GetOrigin();
double* p1 = widget->GetPoint1();
double* p2 = widget->GetPoint2();

double edgeLength1 = sqrt( vtkMath::Distance2BetweenPoints(p1,o) );
double edgeLength2 = sqrt( vtkMath::Distance2BetweenPoints(p2,o) );

double area = sqrt( vtkMath::Distance2BetweenPoints(p1,o)  *vtkMath::Distance2BetweenPoints(p2,o) ) ;


Dean