[ODE] collision detection problems ... ray and box

[LR]

Are you sure the Ray position and RAy direction (rkRay.m_kOrigin,
rkRay.m_kDirection) are good ? 
It work fine for me ...
 
Laurent.
 

  _____  

De : ode-bounces at q12.org [mailto:ode-bounces at q12.org] De la part de Jürgen
Ladstätter
Envoyé : samedi 25 mars 2006 10:48
À : ode at q12.org
Objet : [ODE] collision detection problems ... ray and box


hi there all,
 
i don't know wheter its an ODE error or my mistake that i forgot smth ...
let me discribe the way i implemented it today ...
 
first of all i create a quadtreespace for my items with which i wanna make
the CD (collision detection).

dVector3 center, size;
center[0] = 0.0f; center[1] = 0.0f; center[2] = 0.0f; center[3] = 0.0f;
size[0] = 1000.0f; size[1] = 1000.0f; size[2] = 1000.0f; size[3] = 0.0f;
g_ikCDSpace = dQuadTreeSpaceCreate( 0, center, size, 5 );
 
then i add some boxes to my space and add those ids to a vector queue, so
that i can fetch them faster in the future

VertexPoint sVertex;
sVertex.bEnabled = true;
sVertex.gidCDBox = dCreateBox ( g_ikCDSpace, 20.0f, 20.0f, 20.0f);
m_vBV.push_back( sVertex );
m_viEnd   = m_vBV.end();
 
when i'm clicking now on my screen i calculate the origin for my ray and the
direction, and then do some CD - but it doesnt work :(
 
m_viStart = m_vBV.begin();
dGeomID testray = dCreateRay (g_ikCDSpace, 1000.0f);
dGeomRaySet( testray, rkRay.m_kOrigin[0], rkRay.m_kOrigin[1],
rkRay.m_kOrigin[2], rkRay.m_kDirection[0], rkRay.m_kDirection[1],
rkRay.m_kDirection[2]);
dGeomRaySetLength (testray,10000);
dContactGeom contact;
 
for( ; m_viStart != m_viEnd; m_viStart++ )
{
 if( dCollide( testray,m_viStart->gidCDBox,0,&contact,sizeof(dContactGeom))
!= 0)
 {
  neolog << "yuhuu";
  m_viStart->bEnabled = false;
  return distance( m_vBV.begin(), m_viStart );
 }
}
 
thats all what i implemented so far but it doesnt work. is there any need to
call an update function in the rendercycle or smth like that?
any malicious ideas? ;)
 

Thanks in advance, Jürgen
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