josh/fart
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

converted shapes/Intersect::intersect() to using BoolIntersectionList

Browse Source 
git-svn-id: svn://anubis/fart/trunk@152 7f9b0f55-74a9-4bce-be96-3c2cd072584d
This commit is contained in:
Josh Holtrop 2009-02-24 03:04:26 +00:00
parent 2e6c62a032
commit bcbec65a8f
4 changed files with 78 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
main/Scene.cc
View File

@ -177,8 +177,8 @@ vector<Scene::ShapeDistance> Scene::getRayHits(const Ray & ray)
i < num_results;
i++)
{
refptr<Shape> shape = intersections[i].first;
const Vector & isect_point = intersections[i].second;
refptr<Shape> shape = intersections[i].shape;
const Vector & isect_point = intersections[i].vector;
Vector normal = shape->getNormalAt(isect_point);
double dot = normal % ray.getDirection();
double intersect_dist = (isect_point - ray.getOrigin()).mag();

2
shapes/Intersect.cc
View File

@ -11,7 +11,7 @@ Shape::IntersectionList Intersect::intersect(refptr<Shape> _this, const Ray & ra
{
IntersectionList res1 = m_shape1->intersect(m_shape1, ray);
IntersectionList res2 = m_shape2->intersect(m_shape2, ray);
IntersectionList merged = res1.merge(res2, ray.getOrigin());
BoolIntersectionList merged(res1, res2, ray.getOrigin());
IntersectionList res;
bool in1 = false, in2 = false;

35
shapes/Shape.cc
View File

@ -15,45 +15,44 @@ Shape::~Shape()
{
}
class IntersectionComparator : public std::binary_function<Shape::Intersection,
Shape::Intersection,
class BoolIntersectionComparator
: public std::binary_function<Shape::BoolIntersection,
Shape::BoolIntersection,
bool>
{
public:
IntersectionComparator(const Vector & refPoint)
BoolIntersectionComparator(const Vector & refPoint)
{
m_refPoint = refPoint;
}
bool operator()(const Shape::Intersection & i1,
const Shape::Intersection & i2) const
bool operator()(const Shape::BoolIntersection & i1,
const Shape::BoolIntersection & i2) const
{
return (m_refPoint.dist_to(i1.second)
< m_refPoint.dist_to(i2.second));
return (m_refPoint.dist_to(i1.intersection.vector)
< m_refPoint.dist_to(i2.intersection.vector));
}
protected:
Vector m_refPoint;
};
Shape::IntersectionList
Shape::IntersectionList::merge(const IntersectionList & other,
Shape::BoolIntersectionList::BoolIntersectionList(const IntersectionList & l1,
const IntersectionList & l2,
const Vector & startPoint)
{
Shape::IntersectionList result;
for (size_t i = 0, sz = m_intersections.size();
for (size_t i = 0, sz = l1.size();
i < sz;
i++)
{
result.add(m_intersections[i]);
m_intersections.push_back( BoolIntersection(l1[i], true) );
}
for (size_t i = 0, sz = other.m_intersections.size();
for (size_t i = 0, sz = l2.size();
i < sz;
i++)
{
result.add(other.m_intersections[i]);
m_intersections.push_back( BoolIntersection(l2[i], false) );
}
sort(result.begin(), result.end(), IntersectionComparator(startPoint));
return result;
sort(m_intersections.begin(),
m_intersections.end(),
BoolIntersectionComparator(startPoint));
}

60
shapes/Shape.h
View File

@ -14,7 +14,30 @@
class Shape
{
public:
typedef std::pair< refptr<Shape> , Vector > Intersection;
class Intersection
{
public:
Intersection() {};
Intersection(refptr<Shape> shape, const Vector & vector)
{
this->shape = shape;
this->vector = vector;
}
refptr<Shape> shape;
Vector vector;
};
class BoolIntersection
{
public:
BoolIntersection() {};
BoolIntersection(const Intersection & intersection, bool left)
{
this->intersection = intersection;
this->left = left;
}
Intersection intersection;
bool left;
};
class IntersectionList
{
public:
@ -26,7 +49,11 @@ class Shape
{
return m_intersections[i];
}
size_t size() { return m_intersections.size(); }
const Intersection & operator[](int i) const
{
return m_intersections[i];
}
size_t size() const { return m_intersections.size(); }
std::vector<Intersection>::iterator begin()
{
return m_intersections.begin();
@ -35,11 +62,36 @@ class Shape
{
return m_intersections.end();
}
IntersectionList merge(const IntersectionList & other,
const Vector & startPoint);
protected:
std::vector< Intersection > m_intersections;
};
class BoolIntersectionList
{
public:
BoolIntersectionList(const IntersectionList & l1,
const IntersectionList & l2,
const Vector & startPoint);
BoolIntersection & operator[](int i)
{
return m_intersections[i];
}
const BoolIntersection & operator[](int i) const
{
return m_intersections[i];
}
size_t size() const { return m_intersections.size(); }
std::vector<BoolIntersection>::iterator begin()
{
return m_intersections.begin();
}
std::vector<BoolIntersection>::iterator end()
{
return m_intersections.end();
}
protected:
std::vector< BoolIntersection > m_intersections;
};
Shape();
virtual ~Shape();