Ray From mouse pos

devil20 · Post by **devil20** » Tue Jul 19, 2005 7:49 am

Hi

How can i get 3d Ray from 2d mouse position ? engine has any function ?

I just want to pick some objects but i need intersection points at mouse cursor position if any .

lantis · Post by **lantis** » Wed Jul 20, 2005 9:11 am

irr::core::position2d<int> cursorPos;
cursorPos = cursor->getPosition();

smgr->getSceneCollisionManager()->getSceneNodeFromScreenCoordinatesBB(cursorPos);

Unfortunately here bug in engine and sometimes this code can't pickup node

bitplane · Post by **bitplane** » Wed Jul 20, 2005 11:10 pm

// answering the original question:
line3d<f32> raytrace = colmgr->getRayFromScreenCoordinates(device->getCursorControl()->getPosition(), camera);

pr3t3nd3r_guest · Post by **pr3t3nd3r_guest** » Sun Jul 24, 2005 12:03 pm

lantis wrote:irr::core::position2d<int> cursorPos;
cursorPos = cursor->getPosition();

smgr->getSceneCollisionManager()->getSceneNodeFromScreenCoordinatesBB(cursorPos);

Unfortunately here bug in engine and sometimes this code can't pickup node

When create nodes what you don't want to be selected use id 0 and the same for mouse cursor, light ... etc ...
Sometimes the desired node doesn't get selected because there are other nodes in front with id -1.

lantis · Post by **lantis** » Tue Jul 26, 2005 9:56 am

pr3t3nd3r_guest you are wrong - this bug happens and if all id >=0