HexagonHeightField Class Reference

A core heightfield on a hexagonal grid. More...

#include <hexagonheightfield.h>

Inheritance diagram for HexagonHeightField:

Public Member Functions
	HexagonHeightField ()
	Empty.
	HexagonHeightField (const ScalarHexagonField2 &)
	Create a heightfield from a scalar field. More...
	HexagonHeightField (const Vector2 &, const double &, int, int, const double &=0.0)
	Create the field structure. More...
	~HexagonHeightField ()
	Empty.
Vector	Vertex (int, int) const
	Compute the vertex corresponding to a given sample. More...
Vector	Normal (int, int) const
	Compute the normal at a given sample. More...
double	Slope (int, int) const
	Compute the slope at a given integer point on the terrain. More...
void	CreateHexes (QVector< FrameScaled > &) const
	Create a stack representation of the model. More...

Detailed Description

A core heightfield on a hexagonal grid.

Constructor & Destructor Documentation

HexagonHeightField() [1/2]

HexagonHeightField::HexagonHeightField ( const ScalarHexagonField2 &  s )

explicit

Create a heightfield from a scalar field.

This constructor provides implicit conversion.

Parameters

s	Scalar field.

HexagonHeightField() [2/2]

HexagonHeightField::HexagonHeightField ( const Vector2 &  c, const double &  r, int  x, int  y, const double &  v = 0.0  )

explicit

Create the field structure.

Parameters

c	Origin.
x,y	Size of the array.
v	Default value of field.

Member Function Documentation

CreateHexes()

void HexagonHeightField::CreateHexes

(

QVector< FrameScaled > &

frames

)

const

Create a stack representation of the model.

Stacks are defined as scaled hexagonal prisms.

Parameters

frames

Set of instances.

Normal()

Vector HexagonHeightField::Normal	(	int	i,
		int	j
	)		const

Compute the normal at a given sample.

This function uses the weighted sum (area) of the normals of the triangles sharing the point on the grid. The returned vector is normalized.

Parameters

i,j	Integer coordinates of the sample.

Slope()

double HexagonHeightField::Slope	(	int	i,
		int	j
	)		const

Compute the slope at a given integer point on the terrain.

Parameters

i,j	Integer coordinates

Vertex()

Vector HexagonHeightField::Vertex	(	int	i,
		int	j
	)		const

Compute the vertex corresponding to a given sample.

Parameters

i,j	Integer coordinates of the sample.