# HPlane

## Functions

| `HPlane`
| `HPlane`
| `HPlane`
void | `Set`
double | `ClassifyPoint`
void | `CalculateNormal`
bool | `Equal`
float | `a`
float | `b`
float | `c`
float | `d`
void | `a`
void | `b`
void | `c`
void | `d`

## Detailed Description

class `HPlane`

  The HPlane class is the data type of a plane.

  The HPlane class encapsulates the a, b, c and d parameters of the plane equation.

  Subclassed by HPlaneKey

  Public Functions

  inline `HPlane`(float const A = 0, float const B = 1, float const C = 0, float const D = 0)
  inline `HPlane`(HVector const &normal, float const D)
  inline `HPlane`(HPlane const &p)
  inline void `Set`(float A, float B, float C, float D)

    This method sets an HPlane object with parameter values.

  inline double `ClassifyPoint`(HPoint const &p) const

    This method determines if given point is infront of or behind the plane.

    Returns: | A positive value if the point is in front of the plane or a negative value if the point is behind the plane. If the value is 0, the point is on the plane.

  inline void `CalculateNormal`(HPoint &normal) const

    This method returns a perpendicular plane vector.

    Parameters: | normal – Pass by reference. The method returns the value for a normalized vector that is perpendicular to the plane.

  inline bool `Equal`(HPlane const *p, float epsi1 = (1e-5f), float epsi2 = (1e-5f)) const

    This method checks if the xyz components of the point are equal.

  inline float `a`() const
  inline float `b`() const
  inline float `c`() const
  inline float `d`() const
  inline void `a`(float A)
  inline void `b`(float B)
  inline void `c`(float C)
  inline void `d`(float D)

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