Method castRay

Engine/source/environment/meshRoad.cpp:2096–2291

}

bool MeshRoad::castRay( const Point3F &s, const Point3F &e, RayInfo *info )
{
   Point3F start = s;
   Point3F end = e;
   mObjToWorld.mulP(start);
   mObjToWorld.mulP(end);

   F32 out = 1.0f;   // The output fraction/percentage along the line defined by s and e
   VectorF norm(0.0f, 0.0f, 0.0f);     // The normal of the face intersected
   
   Vector<MeshRoadHitSegment> hitSegments;

   for ( U32 i = 0; i < mSegments.size(); i++ )
   {
      const MeshRoadSegment &segment = mSegments[i];

      F32 t;
      VectorF n;

      if ( segment.getWorldBounds().collideLine( start, end, &t, &n ) )
      {
         hitSegments.increment();
         hitSegments.last().t = t;
         hitSegments.last().idx = i;         
      }
   }

   dQsort( hitSegments.address(), hitSegments.size(), sizeof(MeshRoadHitSegment), compareHitSegments );

   U32 idx0, idx1, idx2;
   F32 t;

   for ( U32 i = 0; i < hitSegments.size(); i++ )
   {
      U32 segIdx = hitSegments[i].idx;
      const MeshRoadSegment &segment = mSegments[segIdx];

      U32 numConvexes ;
      U32 halfConvexes;
      U32 nextSegOffset = 2*mSideProfile.mNodes.size();
      U32 leftSideOffset = nextSegOffset/2;
      U32 k2, capIdx1, capIdx2, capIdx3;

      // Each segment has 6 faces
      for ( U32 j = 0; j < 6; j++ )
      {
         if ( j == 4 && segIdx != 0 )
            continue;

         if ( j == 5 && segIdx != mSegments.size() - 1 )
            continue;

         // The top and bottom sides have 2 convex(s)
         // The left, right, front, and back sides depend on the user-defined profile
         switch(j)
         {
         case 0:  numConvexes = 2; break;                                  // Top
         case 1:                                                           // Left