source: GTP/trunk/Lib/Vis/Preprocessing/src/IntersectableWrapper.cpp @ 1344

#include "IntersectableWrapper.h"
#include "Mesh.h"
#include "Triangle3.h"


namespace GtpVisibilityPreprocessor {


AxisAlignedBox3 TriangleIntersectable::GetBox() const
{       
        return mItem.GetBoundingBox();
}


int TriangleIntersectable::CastRay(Ray &ray)
{       
        float nearestT = MAX_FLOAT;
        float t;
        Vector3 nearestNormal;

        if (ray.GetType() == Ray::LOCAL_RAY && !ray.intersections.empty())
                nearestT = ray.intersections[0].mT;

        const int hitCode = mItem.CastRay(ray, t, nearestT, nearestNormal);

        nearestT = t;

        if ((hitCode == Ray::INTERSECTION) && (ray.GetType() == Ray::LOCAL_RAY))
        {
                if (!ray.intersections.empty())
                {
                        ray.intersections[0] = Ray::Intersection(nearestT, nearestNormal, this, 0);
                }
                else
                {
                        ray.intersections.push_back(Ray::Intersection(nearestT, nearestNormal, this, 0));
                }
                
                return 1;
        }

        return 0;
}
        

int TriangleIntersectable::NumberOfFaces() const
{
        return 1;
}


Vector3 TriangleIntersectable::GetNormal(const int idx) const
{
        return mItem.GetNormal();
}

 
}