This code allows a user to select a meshwrapper that they click on using the
mouse. It is very useful code. The following code is above my head. Peter
Amstutz wrote it for me back in 2003.
I have since updated to the latest version of CrystalSpace, Hitbeam is
different, and I do not know how to update my code.
Here is the code:
csVector3 v;
int FrameWidth, FrameHeight;
iGraphics2D* g2d = g3d->GetDriver2D ();
FrameWidth = g2d->GetWidth ();
FrameHeight = g2d->GetHeight ();
//M.x = Mouse's coordinates x , M.y = Mouse's coordinates y
csVector2 p (M.x, FrameHeight-M.y);
/*This next line gives the error: error: no matching function for call to
iCamera::InvPerspective(csVector2&, int, csVector3&)
*/
view->GetCamera ()->InvPerspective (p, 1, v);
csVector3 vw = view->GetCamera ()->GetTransform ().This2Other (v);
iSector* sector = view->GetCamera ()->GetSector ();
csVector3 origin = view->GetCamera ()->GetTransform ().GetO2TTranslation ();
csVector3 isect;
//Now for the old code that no longer works:
iPolygon3D **sel=NULL;
iMeshWrapper *temp_wrap= sector->HitBeam (origin, origin + (vw-origin) * 20,
isect,sel);
----------------------------------------------------------------------------------------------
Here is another look at my code. I tried changing stuff by reading the docs and
help from IRC, but I think I messed up stuff.
csVector3 v;
int FrameWidth, FrameHeight;
iGraphics2D* g2d = g3d->GetDriver2D ();
FrameWidth = g2d->GetWidth ();
FrameHeight = g2d->GetHeight ();
csVector2 p (M.x, FrameHeight-M.y);
//OLD CODE view->GetCamera ()->InvPerspective (p, 1, v);
//NEXT LINE = NEW CODE: Is this the problem?
view->GetCamera ()->InvPerspective (p, 1.0);
csVector3 vw = view->GetCamera ()->GetTransform ().This2Other (v);
iSector* sector = view->GetCamera ()->GetSector ();
csVector3 origin = view->GetCamera ()->GetTransform ().GetO2TTranslation ();
csVector3 isect;
//OLD CODE iPolygon3D **sel=NULL;
//OLD CODE iMeshWrapper *temp_wrap= sector->HitBeam (origin, origin +
(vw-origin) * 20, isect,sel);
//NEXT LINE = NEW CODE: Is this the problem?
iMeshWrapper *temp_wrap=sector->HitBeam(origin,
origin+(vw-origin)*20,true).mesh;
-------------------------------------------------------------------------
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