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/*****
* bbox3.h
* Andy Hammerlindl 2002/06/06
*
* Stores a rectangle that encloses a drawing object.
*****/
#ifndef BBOX3_H
#define BBOX3_H
#include "triple.h"
// For CYGWIN
#undef near
#undef far
namespace camp {
// The box that encloses a path
struct bbox3 {
bool empty;
double left;
double bottom;
double near;
double right;
double top;
double far;
// Start bbox3 about the origin
bbox3()
: empty(true), left(0.0), bottom(0.0), near(0.0),
right(0.0), top(0.0), far(0.0)
{
}
bbox3(double left, double bottom, double near,
double right, double top, double far)
: empty(false), left(left), bottom(bottom), near(near),
right(right), top(top), far(far)
{
}
// Start a bbox3 with a point
bbox3(double x, double y, double z)
: empty(false), left(x), bottom(y), near(z), right(x), top(y), far(z)
{
}
// Start a bbox3 with a point
bbox3(const triple& v)
: empty(false), left(v.getx()), bottom(v.gety()), near(v.getz()),
right(v.getx()), top(v.gety()), far(v.getz())
{
}
// Start a bbox3 with 2 points
bbox3(const triple& m, const triple& M)
: empty(false),
left(m.getx()), bottom(m.gety()), near(m.getz()),
right(M.getx()), top(M.gety()), far(M.getz())
{
}
// Add a point to a bbox3
void add(const triple& v)
{
const double x = v.getx(), y = v.gety(), z = v.getz();
add(x,y,z);
}
void add(double x, double y, double z)
{
if (empty) {
left = right = x;
top = bottom = y;
near = far = z;
empty = false;
}
else {
if(x < left)
left = x;
else if(x > right)
right = x;
if(y < bottom)
bottom = y;
else if(y > top)
top = y;
if(z < near)
near = z;
else if(z > far)
far = z;
}
}
// Add a point to a nonempty bbox3
void addnonempty(double x, double y, double z)
{
if(x < left)
left = x;
else if(x > right)
right = x;
if(y < bottom)
bottom = y;
else if(y > top)
top = y;
if(z < near)
near = z;
else if(z > far)
far = z;
}
// Add (x,y) pair to a nonempty bbox3
void addnonempty(pair v)
{
double x=v.getx();
if(x < left)
left = x;
else if(x > right)
right = x;
double y=v.gety();
if(y < bottom)
bottom = y;
else if(y > top)
top = y;
}
// Add a point to a nonempty bbox3
void addnonempty(const triple& v)
{
addnonempty(v.getx(),v.gety(),v.getz());
}
// Add a point to a nonempty bbox, updating bounding times
void addnonempty(const triple& v, bbox3& times, double t)
{
double x = v.getx(), y = v.gety(), z = v.getz();
if(x < left) {
left = x;
times.left = t;
}
else if(x > right) {
right = x;
times.right = t;
}
if(y < bottom) {
bottom = y;
times.bottom = t;
}
else if(y > top) {
top = y;
times.top = t;
}
if(z < near) {
near = z;
times.near=t;
}
else if(z > far) {
far = z;
times.far=t;
}
}
bbox3 operator+= (const triple& v)
{
add(v);
return *this;
}
triple Min() const {
return triple(left,bottom,near);
}
triple Max() const {
return triple(right,top,far);
}
pair Min2() const {
return pair(left,bottom);
}
pair Max2() const {
return pair(right,top);
}
friend ostream& operator << (ostream& out, const bbox3& b)
{
out << "Min " << b.Min() << " Max " << b.Max();
return out;
}
};
} // namespace camp
GC_DECLARE_PTRFREE(camp::bbox3);
#endif
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