void grPropagateDamage (ssgEntity* l, sgVec3 poc, sgVec3 force, int cnt)
{
//showEntityType (l);
if (l->isAKindOf (ssgTypeBranch())) {
ssgBranch* br = (ssgBranch*) l;
for (int i = 0 ; i < br -> getNumKids () ; i++ ) {
ssgEntity* ln = br->getKid (i);
grPropagateDamage(ln, poc, force, cnt+1);
}
}
if (l->isAKindOf (ssgTypeVtxTable())) {
sgVec3* v;
int Nv;
ssgVtxTable* vt = (ssgVtxTable*) l;
Nv = vt->getNumVertices();
vt->getVertexList ((void**) &v);
tdble sigma = sgLengthVec3 (force);
tdble invSigma = 5.0;
for (int i=0; i<Nv; i++) {
tdble r = sgDistanceSquaredVec3 (poc, v[i]);
tdble f = exp(-r*invSigma)*5.0;
v[i][0] += force[0]*f;
v[i][1] += force[1]*f;
// use sigma as a random number generator (!)
v[i][2] += (force[2]+0.02*sin(2.0*r + 10.0*sigma))*f;
//printf ("(%f %f %f)\n", v[i][0], v[i][1], v[i][2]);
}
}
}
ssgVtxTableShadow::ssgVtxTableShadow ( GLenum ty, ssgVertexArray *vl,
ssgNormalArray *nl,
ssgTexCoordArray *tl,
ssgColourArray *cl ) : ssgVtxTable( ty, vl, nl, tl, cl )
{
type = ssgTypeVtxTable () ;
factor=0;
unit=0;
}
ssgVtxTableCarlight::ssgVtxTableCarlight(ssgVertexArray *vtx, double s, sgVec3 p)
{
gltype = GL_TRIANGLE_STRIP;
type = ssgTypeVtxTable();
size = s;
on = 1;
pos[0] = p[0];
pos[1] = p[1];
pos[2] = p[2];
vertices = (vtx!=NULL) ? vtx : new ssgVertexArray();
normals = new ssgNormalArray();
texcoords = new ssgTexCoordArray();
colours = new ssgColourArray();
vertices->ref();
normals->ref();
texcoords->ref();
colours->ref();
recalcBSphere();
}
ssgVtxTableSmoke:: ssgVtxTableSmoke (ssgVertexArray *shd_vtx , float initsize, int typ)
{
sizex = sizey = sizez = initsize;
gltype = GL_TRIANGLE_STRIP;
type = ssgTypeVtxTable () ;
stype = typ;
vertices = (shd_vtx!=NULL) ? shd_vtx : new ssgVertexArray () ;
normals = new ssgNormalArray () ;
texcoords = new ssgTexCoordArray () ;
colours = new ssgColourArray () ;
vertices -> ref () ;
normals -> ref () ;
texcoords -> ref () ;
colours -> ref () ;
cur_col[0] = cur_col[1] = cur_col[2] = 0.8;
vvx = vvy = vvz = 0.0;
init_alpha = 0.9;
recalcBSphere () ;
}
