how to make zoom in with mouse ?

[umen]

Hi
im really begginer , how can i do simple zoom in out with the mouse ?
im reading the document and the fourm with out any example about simple zoom in / out

[soulless]

In the mouse event just change the field of view of the camera.

[Radikalizm]

or you could just move your camera towards its target with a certain offset based on the delta-value of your scrolling wheel

[randomMesh]

In the mouse event just change the field of view of the camera.

Copy this into your event receiver:

Code: Select all

//check mouse events
if(irr::EET_MOUSE_INPUT_EVENT == event.EventType)
{
	//check mouse wheel
	if (irr::EMIE_MOUSE_WHEEL == event.MouseInput.Event)
	{
		irr::scene::ICameraSceneNode* const camera = smgr->getActiveCamera();

		//zoom camera
		irr::f32 newFOV = camera->getFOV();

		if (event.MouseInput.Wheel < 0)
			newFOV = irr::core::min_(newFOV + irr::core::DEGTORAD, irr::core::PI*0.5f);
		else
			newFOV = irr::core::max_(newFOV - irr::core::DEGTORAD, irr::core::PI*0.0125f);

		camera->setFOV(newFOV);

		return true;
	}
}