// ----------------------------------------------------------------------
void
XYZFileElevationTask::
xy_place_scale( shawn::SimulationController& sc,
const XYZFile& f,
shawn::Vec& bp, shawn::Vec& s )
throw( std::runtime_error )
{
double scale = sc.environment().optional_double_param("xy_scale",1.0);
bp = Vec( sc.environment().optional_double_param("x1",0.0),
sc.environment().optional_double_param("y1",0.0),
bp.z() );
s = Vec( sc.environment().optional_double_param("x_scale",scale),
sc.environment().optional_double_param("y_scale",scale),
s.z() );
}
// ----------------------------------------------------------------------
void
rotate_2D( double angle, shawn::Vec& coord, const shawn::Vec& origin )
throw()
{
double cos_angle = cos( angle );
double sin_angle = sin( angle );
coord = shawn::Vec(
((coord.x() - origin.x()) * cos_angle) - ((coord.y() - origin.y()) * sin_angle) + origin.x(),
((coord.y() - origin.y()) * cos_angle) + ((coord.x() - origin.x()) * sin_angle) + origin.y(),
coord.z() );
}