void Navigator::DoScale(m2::PointD const & pt1, m2::PointD const & pt2, double /*timeInSec*/)
{
if (m_LastPt1 == pt1 && m_LastPt2 == pt2)
return;
if (pt1 == pt2)
return;
ScreenBase PrevScreen = m_Screen;
m_Screen = m_StartScreen;
// Checking for rotation threshold.
if (m_DoCheckRotationThreshold)
{
double s = pt1.Length(pt2) / m_StartPt1.Length(m_StartPt2);
double a = ang::AngleTo(pt1, pt2) - ang::AngleTo(m_StartPt1, m_StartPt2);
double aThresh = 10.0 / 180.0 * math::pi;
double sThresh = 1.2;
bool isScalingInBounds = (s > 1 / sThresh) && (s < sThresh);
bool isRotationOutBounds = fabs(a) > aThresh;
if (isScalingInBounds)
{
if (isRotationOutBounds)
{
m_IsRotatingDuringScale = true;
m_DoCheckRotationThreshold = false;
}
}
else
{
m_IsRotatingDuringScale = false;
m_DoCheckRotationThreshold = false;
}
}
m_Screen = PrevScreen;
if (!ScaleImpl(pt1, pt2,
m_LastPt1, m_LastPt2,
pt1.Length(pt2) > m_LastPt1.Length(m_LastPt2),
m_IsRotatingDuringScale))
{
m_Screen = PrevScreen;
}
m_LastPt1 = pt1;
m_LastPt2 = pt2;
}
void MyPositionController::DragEnded(m2::PointD const & distance)
{
float const kBindingDistance = 0.1;
m_needBlockAnimation = false;
if (distance.Length() > kBindingDistance * min(m_pixelRect.SizeX(), m_pixelRect.SizeY()))
StopLocationFollow();
UpdateViewport(kDoNotChangeZoom);
}
void operator() (m2::PointD const & p)
{
m2::PointD const pt(this->convert_point(p));
if (m_exist)
m_length += pt.Length(m_prevPt);
m_exist = true;
m_prevPt = pt;
}
ScreenBase::MatrixT const
ScreenBase::CalcTransform(m2::PointD const & oldPt1, m2::PointD const & oldPt2,
m2::PointD const & newPt1, m2::PointD const & newPt2,
bool allowRotate)
{
double const s = newPt1.Length(newPt2) / oldPt1.Length(oldPt2);
double const a = allowRotate ? ang::AngleTo(newPt1, newPt2) - ang::AngleTo(oldPt1, oldPt2) : 0.0;
MatrixT m =
math::Shift(
math::Scale(
math::Rotate(
math::Shift(
math::Identity<double, 3>(),
-oldPt1.x, -oldPt1.y
),
a
),
s, s
),
newPt1.x, newPt1.y
);
return m;
}
void cut_path_intervals::operator()(m2::PointD const & pt)
{
if (m_hasPrevPt)
{
double const segLen = pt.Length(m_prev);
for (; m_pos != m_intervals->size(); m_pos += 2)
{
double const start = (*m_intervals)[m_pos];
if (start >= m_length + segLen)
break;
m2::PointD const dir = (pt - m_prev) / segLen;
if (start >= m_length)
{
m_points.push_back(PathInfo(start));
push_point(m_prev + dir * (start - m_length));
}
double const end = (*m_intervals)[m_pos+1];
if (end >= m_length + segLen)
{
push_point(pt);
break;
}
if (end < m_length + segLen)
{
push_point(m_prev + dir * (end - m_length));
#ifdef DEBUG
double const len = m_points.back().GetLength();
ASSERT_LESS_OR_EQUAL ( fabs(len - (end - start)), 1.0E-4, (len, end - start) );
#endif
}
}
m_prev = pt;
m_length += segLen;
}
else
{
m_hasPrevPt = true;
m_prev = pt;
}
}