/**
* Convert a dpcore::Point to network format. The
* reverse operation for this is in statetracker.cpp
* @param p
* @return
*/
protocol::PenPoint pointToProtocol(const dpcore::Point &p)
{
// The two least significant bits of the coordinate
// are the fractional part.
// The rest is the integer part with a bias of 128
uint16_t x = (qMax(0, p.x() + 128) << 2) | (uint16_t(p.xFrac()*4) & 3);
uint16_t y = (qMax(0, p.y() + 128) << 2) | (uint16_t(p.yFrac()*4) & 3);
return protocol::PenPoint(x, y, p.pressure() * 255);
}
/**
* @param point stroke coordinates to send
*/
void SessionState::sendStrokePoint(const dpcore::Point& point)
{
host_->sendPacket(protocol::StrokePoint(
host_->localuser_,
point.x(),
point.y(),
point.xFrac(),
point.yFrac(),
qRound(point.pressure()*255)
)
);
}