00001
00005 #include "Plane.h"
00006 #include "HitRecord.h"
00007 #include "Math.h"
00008 #include "Ray.h"
00009 #include <iostream>
00010 #include <stdlib.h>
00011 using namespace std;
00012
00013 Plane::Plane(Material* material, const Vector& normal, const Point& point)
00014 : Primitive(material), n(normal)
00015 {
00016 n.normalize();
00017 d = Dot(n, point);
00018 }
00019
00020 Plane::~Plane()
00021 {
00022 }
00023
00024 void Plane::intersect(HitRecord& hit, const RenderContext& context, const Ray& ray) const
00025 {
00026 double denom = Dot(n, ray.direction());
00027 if(Abs(denom) > 1.e-6){
00028 double t = (d-Dot(n, ray.origin()))/denom;
00029 hit.hit(t, this, matl);
00030 }
00031 }
00032
00033 void Plane::normal(Vector& normal, const RenderContext&,
00034 const Point&, const Ray&, const HitRecord&) const
00035 {
00036 normal = n;
00037 }
00038
00039 void Plane::getBounds(BoundingBox& bbox) const
00040 {
00041 cerr << "Plane::getBounds() called!" << endl;
00042 exit( 1 );
00043 }
00044
