static bool TryingToDoPerpendicularJump(const WebCore::IntRect& rect, const WebCore::IntRect& previousRect, EA::WebKit::JumpDirection direction)
{
if (direction == EA::WebKit::JumpLeft || direction == EA::WebKit::JumpRight)
{
if (rect.maxXMinYCorner().x() <= previousRect.maxXMinYCorner().x() && rect.minXMinYCorner().x() >= previousRect.minXMinYCorner().x())
{
return true;
}
else
{
return false;
}
}
else
{
if (rect.maxXMinYCorner().y() <= previousRect.maxXMinYCorner().y() && rect.maxXMaxYCorner().y() >= previousRect.maxXMaxYCorner().y())
{
return true;
}
else
{
return false;
}
}
}
static bool WouldBeTrappedInElement(const WebCore::IntRect& rect, const WebCore::IntPoint& point, EA::WebKit::JumpDirection direction)
{
// If we're not inside, don't worry
if (rect.contains(point))
{
typedef WebCore::IntPoint Vector2D;
const WebCore::IntPoint centre = Average( rect.minXMaxYCorner(), rect.maxXMinYCorner() );
Vector2D pointToCentre = Subtract(centre,point);
Vector2D forward;
switch (direction)
{
// note these are 'backward
case EA::WebKit::JumpUp: forward = Vector2D(0,-100); break;
case EA::WebKit::JumpDown: forward = Vector2D(0,100); break;
case EA::WebKit::JumpLeft: forward = Vector2D(-100,0); break;
case EA::WebKit::JumpRight: forward = Vector2D(100,0); break;
}
// Basically, if the centre is behind us, don't jump there
if (DotProduct(forward,pointToCentre) < 0)
{
return false;
}
else
{
/*printf("(%d,%d) Trapped Inside Element (%d,%d)->(%d,%d): forward=(%d,%d) pointToCentre=(%d,%d) dot=%d\n",
point.x(),
point.y(),
rect.bottomLeft().x(),
rect.bottomLeft().y(),
rect.topRight().x(),
rect.topRight().y(),
forward.x(),
forward.y(),
pointToCentre.x(),
pointToCentre.y(),
DotProduct(forward,pointToCentre)
);*/
return true;
}
}
else
{
return false;
}
}