*/
static SGSkyColor scolor;
- FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
+// FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
scolor.sky_color = l->sky_color();
scolor.fog_color = l->adj_fog_color();
globals->get_aircraft_model()->select( true );
globals->get_model_mgr()->draw();
globals->get_aircraft_model()->draw();
- // If the view is internal, the previous line draw the
- // cockpit with modified near/far clip planes and deselect
- // the aircraft in the global scenegraph
- // Otherwise, it just enables the aircraft: The scenegraph
- // must be drawn again to see the plane.
- ssgBranch *branch = globals->get_scenery()->get_aircraft_branch();
- // in external view the shadows are drawn before the transparent parts of the ac
- if( ! is_internal )
- branch->setTravCallback( SSG_CALLBACK_POSTTRAV, SGShadowVolume::ACpostTravCB);
- ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
- branch->setTravCallback( SSG_CALLBACK_POSTTRAV, 0);
+
FGTileMgr::set_tile_filter( true );
sgSetModelFilter( true );
globals->get_aircraft_model()->select( true );
FGHitList::~FGHitList() {}
+// http://www.cs.lth.se/home/Tomas_Akenine_Moller/raytri/raytri.c
+// http://little3d.free.fr/ressources/jgt%20Fast,%20Minumum%20Storage%20Ray-Triangle%20Intersection.htm
+// http://www.acm.org/jgt/papers/MollerTrumbore97/
+
+/* Ray-Triangle Intersection Test Routines */
+/* Different optimizations of my and Ben Trumbore's */
+/* code from journals of graphics tools (JGT) */
+/* http://www.acm.org/jgt/ */
+/* by Tomas Moller, May 2000 */
+
+/* code rewritten to do tests on the sign of the determinant */
+/* the division is at the end in the code */
+// cosmetics change by H.J :
+// make u & v locals since we don't use them, use sg functions
+static bool intersect_triangle(const double orig[3], const double dir[3],
+ const double vert0[3], const double vert1[3], const double vert2[3],
+ double *t)
+{
+ double u, v;
+ double edge1[3], edge2[3], tvec[3], pvec[3], qvec[3];
+
+ const SGDfloat eps = 1e-4;
+
+ /* find vectors for two edges sharing vert0 */
+ sgdSubVec3(edge1, vert1, vert0);
+ sgdSubVec3(edge2, vert2, vert0);
+
+ /* begin calculating determinant - also used to calculate U parameter */
+ sgdVectorProductVec3(pvec, dir, edge2);
+
+ /* if determinant is near zero, ray lies in plane of triangle */
+ double det = sgdScalarProductVec3(edge1, pvec);
+
+ if (det > eps)
+ {
+ /* calculate distance from vert0 to ray origin */
+ sgdSubVec3(tvec, orig, vert0);
+
+ /* calculate U parameter and test bounds */
+ u = sgdScalarProductVec3(tvec, pvec);
+ if (u < 0.0 || u > det)
+ return false;
+
+ /* prepare to test V parameter */
+ sgdVectorProductVec3(qvec, tvec, edge1);
+
+ /* calculate V parameter and test bounds */
+ v = sgdScalarProductVec3(dir, qvec);
+ if (v < 0.0 || u + v > det)
+ return false;
+
+ }
+ else if(det < -eps)
+ {
+ /* calculate distance from vert0 to ray origin */
+ sgdSubVec3(tvec, orig, vert0);
+
+ /* calculate U parameter and test bounds */
+ u = sgdScalarProductVec3(tvec, pvec);
+ if (u > 0.0 || u < det)
+ return false;
+
+ /* prepare to test V parameter */
+ sgdVectorProductVec3(qvec, tvec, edge1);
+
+ /* calculate V parameter and test bounds */
+ v = sgdScalarProductVec3(dir, qvec) ;
+ if (v > 0.0 || u + v < det)
+ return false;
+ }
+ else return false; /* ray is parallell to the plane of the triangle */
+
+ /* calculate t, ray intersects triangle */
+ *t = sgdScalarProductVec3(edge2, qvec) / det;
+
+ return true;
+}
+
+
/*
Find the intersection of an infinite line with a leaf the line being
defined by a point and direction.
sgdSetVec3( tri[0], leaf->getVertex( i1 ) );
sgdSetVec3( tri[1], leaf->getVertex( i2 ) );
sgdSetVec3( tri[2], leaf->getVertex( i3 ) );
-
+#if 1
+ sgdFloat t;
+ if( intersect_triangle( orig, dir, tri[0], tri[1], tri[2], &t) ) {
+ sgdVec4 plane;
+ sgdMakePlane( plane, tri[0], tri[1], tri[2] );
+ // t is the distance to the triangle plane
+ // so P = Orig + t*dir
+ sgdVec3 point;
+ sgdAddScaledVec3( point, orig, dir, t );
+ sgdXformPnt3( point, point, m );
+ sgdXformPnt4(plane,plane,m);
+ add(leaf,i,point,plane);
+ num_hits++;
+ }
+#else
if( isZeroAreaTri( tri ) )
continue;
if( fgdPointInTriangle( point, tri ) ) {
// transform point into passed into desired coordinate frame
sgdXformPnt3( point, point, m );
- sgdXformPnt4(plane,plane,m);
+ sgdXformPnt4(plane,plane,m);
add(leaf,i,point,plane);
num_hits++;
}
}
+#endif
}
return num_hits;
}
&& !kid->getBSphere()->isEmpty() )
{
sgdVec3 center;
+ const sgFloat *BSCenter = kid->getBSphere()->getCenter();
sgdSetVec3( center,
- kid->getBSphere()->getCenter()[0],
- kid->getBSphere()->getCenter()[1],
- kid->getBSphere()->getCenter()[2] );
+ BSCenter[0],
+ BSCenter[1],
+ BSCenter[2] );
sgdXformPnt3( center, m ) ;
// sgdClosestPointToLineDistSquared( center, orig, dir )
// inlined here because because of profiling results
sgdVec3 u, u1, v;
sgdSubVec3(u, center, orig);
- sgdScaleVec3( u1, dir, sgdScalarProductVec3(u,dir)
- / sgdScalarProductVec3(dir,dir) );
+ sgdScaleVec3( u1, dir, sgdScalarProductVec3(u,dir) );
sgdSubVec3(v, u, u1);
// double because of possible overflow
sgdCopyVec3(orig, view_pos );
sgdCopyVec3(dir, abs_view_pos );
+ sgdNormaliseVec3( dir );
hit_list->Intersect( globals->get_scenery()->get_terrain_branch(),
orig, dir );
projects / flightgear.git / commitdiff