本文整理汇总了C++中Ray::Eval方法的典型用法代码示例。如果您正苦于以下问题：C++ Ray::Eval方法的具体用法？C++ Ray::Eval怎么用？C++ Ray::Eval使用的例子？那么恭喜您, 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Ray的用法示例。
在下文中一共展示了Ray::Eval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: Intersect
bool RayTesselatedSegmentPrimitive::Intersect(const Ray& ray, Intersection* intersection) {
Vec3f v0, v1;
_ResolveVertexAttrib(v0,v1,segments->pos);
float t,u, rayEpsilon;
bool hit = IntersectHairSegment(v0,v1,segments->radius,ray,&t,&u,&rayEpsilon);
if(hit) {
// intesection
intersection->rayEpsilon = rayEpsilon;
intersection->t = t;
intersection->dp.P = ray.Eval(t);
intersection->dp.uv = Vec2f(u,0);
if(segments->tangent.empty()) {
intersection->dp.Ng = segments->segmentTangent[idx];
intersection->dp.N = segments->segmentTangent[idx];
} else {
intersection->dp.Ng = ElementOperations::SegmentTangent(v0,v1);
intersection->dp.N = _InterpolateVertexAttrib(u,segments->tangent).GetNormalized();
}
intersection->dp.GenerateTuTv();
if(segments->uv.empty()) {
intersection->dp.st = intersection->dp.uv;
} else {
intersection->dp.st = _InterpolateVertexAttrib(u,segments->uv);
}
intersection->m = material;
}
return hit;
}