WaterPhysicsSystem::Edge::EdgeType WaterPhysicsSystem::Edge::getEdgeType()
{
if (aPosition().y < bPosition().y)
{ /// Downwards pointing
if (aPosition().x < bPosition().x)
{
return eLeftFloor;
}
else
{
return eLeftRoof;
}
}
else
{ /// Upwards pointing
if (aPosition().x < bPosition().x)
{
return eRightFloor;
}
else
{
return eRightRoof;
}
}
}
WaterPhysicsSystem::Edge* WaterPhysicsSystem::Edge::split(Vec2f _point, Boundary* _boundary)
{
Vertex* anchor = new Vertex(_point, _boundary, true);
Edge* edge = new Edge;
edge->setA(anchor, bPosition());
edge->setB(b);
setB(anchor);
return edge;
}
QPointF translate( const TernaryPoint& point )
{
if ( point.isValid() ) {
// the position is calculated by
// - first moving along the B-C line to the function that b
// selects
// - then traversing the selected function until we meet with
// the function that A selects (which is a parallel of the B-C
// line)
QPointF bPosition( 1.0 - point.b(), 0.0 );
QPointF aPosition( point.a() * AxisVector_C_A );
QPointF result( bPosition + aPosition );
return result;
} else {
qWarning() << "TernaryPoint::translate(TernaryPoint): cannot translate invalid ternary points:"
<< point;
return QPointF();
}
}
bPosition operator+ (bPosition& other)
{ return bPosition(ypos+other.ypos,xpos+other.xpos); }
