bool QOsgEventHandler::handle(
const osgGA::GUIEventAdapter &ea
, osgGA::GUIActionAdapter &)
{
if(ea.getEventType() == osgGA::GUIEventAdapter::FRAME
|| ea.getEventType() == osgGA::GUIEventAdapter::MOVE)
return false;
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::KEYDOWN):
{
if(ea.getKey() == '-'
|| ea.getKey() == '+')
{
const float f = 1.00f
+ (ea.getKey() == '+' ? +0.004f : -0.004f);
if(m_fov * f >= 1.f && m_fov * f <= 179.f)
m_fov *= f;
emit fovChanged(m_fov);
}
}
break;
case(osgGA::GUIEventAdapter::SCROLL):
{
const float f = 1.00f
+ (ea.getScrollingMotion() == osgGA::GUIEventAdapter::SCROLL_DOWN ? -0.08f : +0.08f);
if(m_fov * f >= 1.f && m_fov * f <= 179.f)
m_fov *= f;
emit fovChanged(m_fov);
return true;
}
break;
case(osgGA::GUIEventAdapter::RELEASE):
if(ea.getButton() == osgGA::GUIEventAdapter::MIDDLE_MOUSE_BUTTON
&& (ea.getModKeyMask() & osgGA::GUIEventAdapter::MODKEY_CTRL) != 0)
{
m_fov = m_fovBackup;
emit fovChanged(m_fov);
return true;
}
break;
default:
break;
};
return false;
}
/**
* @brief setCameraParameters
* @param fieldOfView
* @param zNear
* @param zFar
**/
void VolumetricHelicoidWidget::setCameraParameters(double _fieldOfView, double _zNear, double _zFar)
{
this->FOV=_fieldOfView;
this->zNear = _zNear;
this->zFar = _zFar;
emit zNearChanged(zNear);
emit zFarChanged(zFar);
emit fovChanged(FOV);
}
