//! Make the first screen position correspond to the second (useful for mouse dragging)
void StelMovementMgr::dragView(int x1, int y1, int x2, int y2)
{
if (dragTimeMode)
{
core->setTimeRate(0);
Vec3d v1, v2;
const StelProjectorP prj = core->getProjection(StelCore::FrameEquinoxEqu);
prj->unProject(x2,y2, v2);
prj->unProject(x1,y1, v1);
v1[2]=0; v1.normalize();
v2[2]=0; v2.normalize();
double angle = (v2^v1)[2];
double deltaDay = angle/(2.*M_PI)*core->getLocalSiderealDayLength();
core->setJD(core->getJD()+deltaDay);
addTimeDragPoint(x2, y2);
}
else
{
Vec3d tempvec1, tempvec2;
const StelProjectorP prj = core->getProjection(StelCore::FrameJ2000);
prj->unProject(x2,y2, tempvec2);
prj->unProject(x1,y1, tempvec1);
double az1, alt1, az2, alt2;
StelUtils::rectToSphe(&az1, &alt1, j2000ToMountFrame(tempvec1));
StelUtils::rectToSphe(&az2, &alt2, j2000ToMountFrame(tempvec2));
panView(az2-az1, alt1-alt2);
}
setFlagTracking(false);
setFlagLockEquPos(false);
}
void mouseMoveEvent( QMouseEvent *e ) {
if (_leftButtonPressed ) {
panView( e->pos() );
} else if (_rightButtonPressed) {
rotateView( e->pos() );
}
else if (_middleButtonPressed) {
zoomView( e->pos() );
}
}
// Increment/decrement smoothly the vision field and position
void StelMovementMgr::updateMotion(double deltaTime)
{
updateVisionVector(deltaTime);
const StelProjectorP proj = core->getProjection(StelCore::FrameJ2000);
// the more it is zoomed, the lower the moving speed is (in angle)
double depl=keyMoveSpeed*deltaTime*1000*currentFov;
double deplzoom=keyZoomSpeed*deltaTime*1000*proj->deltaZoom(currentFov*(M_PI/360.0))*(360.0/M_PI);
if (flagMoveSlow)
{
depl *= 0.2;
deplzoom *= 0.2;
}
if (deltaAz<0)
{
deltaAz = -depl/30;
if (deltaAz<-0.2)
deltaAz = -0.2;
}
else if (deltaAz>0)
{
deltaAz = (depl/30);
if (deltaAz>0.2)
deltaAz = 0.2;
}
if (deltaAlt<0)
{
deltaAlt = -depl/30;
if (deltaAlt<-0.2)
deltaAlt = -0.2;
}
else if (deltaAlt>0)
{
deltaAlt = depl/30;
if (deltaAlt>0.2)
deltaAlt = 0.2;
}
if (deltaFov<0)
{
deltaFov = -deplzoom*5;
if (deltaFov<-0.15*currentFov)
deltaFov = -0.15*currentFov;
}
else if (deltaFov>0)
{
deltaFov = deplzoom*5;
if (deltaFov>20)
deltaFov = 20;
}
if (deltaFov != 0 )
{
changeFov(deltaFov);
}
panView(deltaAz, deltaAlt);
updateAutoZoom(deltaTime);
}