本文整理汇总了C++中SSurface::LineEntirelyOutsideBbox方法的典型用法代码示例。如果您正苦于以下问题：C++ SSurface::LineEntirelyOutsideBbox方法的具体用法？C++ SSurface::LineEntirelyOutsideBbox怎么用？C++ SSurface::LineEntirelyOutsideBbox使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SSurface的用法示例。
在下文中一共展示了SSurface::LineEntirelyOutsideBbox方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: ClassifyEdge
//-----------------------------------------------------------------------------
// Does the given point lie on our shell? There are many cases; inside and
// outside are obvious, but then there's all the edge-on-edge and edge-on-face
// possibilities.
//
// To calculate, we intersect a ray through p with our shell, and classify
// using the closest intersection point. If the ray hits a surface on edge,
// then just reattempt in a different random direction.
//-----------------------------------------------------------------------------
bool SShell::ClassifyEdge(int *indir, int *outdir,
Vector ea, Vector eb,
Vector p,
Vector edge_n_in, Vector edge_n_out, Vector surf_n)
{
List<SInter> l;
ZERO(&l);
srand(0);
// First, check for edge-on-edge
int edge_inters = 0;
Vector inter_surf_n[2], inter_edge_n[2];
SSurface *srf;
for(srf = surface.First(); srf; srf = surface.NextAfter(srf)) {
if(srf->LineEntirelyOutsideBbox(ea, eb, true)) continue;
SEdgeList *sel = &(srf->edges);
SEdge *se;
for(se = sel->l.First(); se; se = sel->l.NextAfter(se)) {
if((ea.Equals(se->a) && eb.Equals(se->b)) ||
(eb.Equals(se->a) && ea.Equals(se->b)) ||
p.OnLineSegment(se->a, se->b))
{
if(edge_inters < 2) {
// Edge-on-edge case
Point2d pm;
srf->ClosestPointTo(p, &pm, false);
// A vector normal to the surface, at the intersection point
inter_surf_n[edge_inters] = srf->NormalAt(pm);
// A vector normal to the intersecting edge (but within the
// intersecting surface) at the intersection point, pointing
// out.
inter_edge_n[edge_inters] =
(inter_surf_n[edge_inters]).Cross((se->b).Minus((se->a)));
}
edge_inters++;
}
}
}
if(edge_inters == 2) {
// TODO, make this use the appropriate curved normals
double dotp[2];
for(int i = 0; i < 2; i++) {
dotp[i] = edge_n_out.DirectionCosineWith(inter_surf_n[i]);
}
if(fabs(dotp[1]) < DOTP_TOL) {
SWAP(double, dotp[0], dotp[1]);
SWAP(Vector, inter_surf_n[0], inter_surf_n[1]);
SWAP(Vector, inter_edge_n[0], inter_edge_n[1]);
}
int coinc = (surf_n.Dot(inter_surf_n[0])) > 0 ? COINC_SAME : COINC_OPP;
if(fabs(dotp[0]) < DOTP_TOL && fabs(dotp[1]) < DOTP_TOL) {
// This is actually an edge on face case, just that the face
// is split into two pieces joining at our edge.
*indir = coinc;
*outdir = coinc;
} else if(fabs(dotp[0]) < DOTP_TOL && dotp[1] > DOTP_TOL) {
if(edge_n_out.Dot(inter_edge_n[0]) > 0) {
*indir = coinc;
*outdir = OUTSIDE;
} else {
*indir = INSIDE;
*outdir = coinc;
}
} else if(fabs(dotp[0]) < DOTP_TOL && dotp[1] < -DOTP_TOL) {
if(edge_n_out.Dot(inter_edge_n[0]) > 0) {
*indir = coinc;
*outdir = INSIDE;
} else {
*indir = OUTSIDE;
*outdir = coinc;
}
} else if(dotp[0] > DOTP_TOL && dotp[1] > DOTP_TOL) {
*indir = INSIDE;
*outdir = OUTSIDE;
} else if(dotp[0] < -DOTP_TOL && dotp[1] < -DOTP_TOL) {
*indir = OUTSIDE;
*outdir = INSIDE;
} else {
// Edge is tangent to the shell at shell's edge, so can't be
// a boundary of the surface.
return false;
}
return true;
}
//.........这里部分代码省略.........