server/dep/include/g3dlite/G3D/Line.h
Lynx3d ae3ad10bcf [10097] Update G3D up to v8.0b4
+ Got rid of zip lib requirement in G3D...
  Still can re-enable code by defining _HAVE_ZIP...

+ Remove silly X11 lib dependency from G3D
  Code doesn't seem to do anything yet anyway, and even if, we don't want it :p

+ Fix another weird G3D build problem...

+ Remove some __asm usage in g3d, which is not available on Win64
  My editor also decided to remove a ton of trailing white spaces...tss...

+ Reapply G3D fixes for 64bit VC

+ not use SSE specific header when SSE not enabled in *nix

+ Updated project files

+ New vmap_assembler VC90/VC80 Project

+ vmap assembler binaries updates

NOTE: Old vmap fikes expected work (as tests show) with new library version.
      But better use new generated versions. Its different in small parts to bad or good...

(based on Lynx3d's repo commit 44798d3)

Signed-off-by: VladimirMangos <vladimir@getmangos.com>
2010-06-23 06:45:25 +04:00

105 lines
2.2 KiB
C++

/**
@file Line.h
Line class
@maintainer Morgan McGuire, http://graphics.cs.williams.edu
@created 2001-06-02
@edited 2006-02-28
*/
#ifndef G3D_LINE_H
#define G3D_LINE_H
#include "G3D/platform.h"
#include "G3D/Vector3.h"
namespace G3D {
class Plane;
/**
An infinite 3D line.
*/
class Line {
protected:
Vector3 _point;
Vector3 _direction;
Line(const Vector3& point, const Vector3& direction) {
_point = point;
_direction = direction.direction();
}
public:
/** Undefined (provided for creating Array<Line> only) */
inline Line() {}
Line(class BinaryInput& b);
void serialize(class BinaryOutput& b) const;
void deserialize(class BinaryInput& b);
virtual ~Line() {}
/**
Constructs a line from two (not equal) points.
*/
static Line fromTwoPoints(const Vector3 &point1, const Vector3 &point2) {
return Line(point1, point2 - point1);
}
/**
Creates a line from a point and a (nonzero) direction.
*/
static Line fromPointAndDirection(const Vector3& point, const Vector3& direction) {
return Line(point, direction);
}
/**
Returns the closest point on the line to point.
*/
Vector3 closestPoint(const Vector3& pt) const;
/**
Returns the distance between point and the line
*/
double distance(const Vector3& point) const {
return (closestPoint(point) - point).magnitude();
}
/** Returns a point on the line */
Vector3 point() const;
/** Returns the direction (or negative direction) of the line */
Vector3 direction() const;
/**
Returns the point where the line and plane intersect. If there
is no intersection, returns a point at infinity.
*/
Vector3 intersection(const Plane &plane) const;
/** Finds the closest point to the two lines.
@param minDist Returns the minimum distance between the lines.
@cite http://objectmix.com/graphics/133793-coordinates-closest-points-pair-skew-lines.html
*/
Vector3 closestPoint(const Line& B, float& minDist) const;
inline Vector3 closestPoint(const Line& B) const {
float m;
return closestPoint(B, m);
}
};
};// namespace
#endif