vertex.h File Reference

Vertex (3 dimensional vector). More...

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Defines

#define LSG_VERTEX_H 1

Typedefs

typedef float Vertex [3]

3 dimensional vector

Functions

void vertex_assign (Vertex dst, float x, float y, float z)

void vertex_copy (Vertex dst, const Vertex src)

void vertex_add (Vertex dst, const Vertex src)

void vertex_sub (Vertex dst, const Vertex src)

void vertex_mul (Vertex dst, const Vertex src)

void vertex_div (Vertex dst, const Vertex src)

void vertex_min (Vertex dst, const Vertex src)

void vertex_max (Vertex dst, const Vertex src)

void vertex_scale (Vertex dst, float scale)

float vertex_dot (const Vertex a, const Vertex b)

void vertex_cross (Vertex dst, const Vertex src)

float vertex_length (const Vertex src)

void vertex_normalize (Vertex dst)

Detailed Description

Vertex (3 dimensional vector).

Typedef Documentation

typedef float Vertex[3]

3 dimensional vector
A three dimensional vector

Function Documentation

void vertex_assign ( Vertex dst,

float x,

float y,

float z

)

Assign all three components of a vertex.
Parameters:

dst The destination vertex

x The value for the first component

y The value for the second component

z The value for the third component

void vertex_copy ( Vertex dst,

const Vertex src

)

Copy a vertex into another.
Parameters:

dst The destination vertex

src The source vertex

void vertex_add ( Vertex dst,

const Vertex src

)

Add a vertex to another.
Parameters:

dst The destination vertex

srx The vertex to add

void vertex_sub ( Vertex dst,

const Vertex src

)

Subtract a vertex from another.
Parameters:

dst The destination vertex

src The vertex to subtract

void vertex_mul ( Vertex dst,

const Vertex src

)

Multiply two vertices component wise.
Parameters:

dst The destination vertex

src The vertex to multiply onto dst

void vertex_div ( Vertex dst,

const Vertex src

)

Divide two vertices component wise.
Parameters:

dst The destination vertex

src The vertex by which to divide dst

void vertex_min ( Vertex dst,

const Vertex src

)

Compute the component wise minimum of two vertices.
Parameters:

dst The destination vertex

src The second vertex

void vertex_max ( Vertex dst,

const Vertex src

)

Compute the component wise maximum of two vertices.
Parameters:

dst The destination vertex

src The second vertex

void vertex_scale ( Vertex dst,

float scale

)

Scale a vertex by a scalar value.
Parameters:

dst The vertex to scale

scale The scale factor

float vertex_dot ( const Vertex a,

const Vertex b

)

Compute the dot product of two vertices.
Parameters:

a The first vertex

b The second vertex

Returns:
The dot product of a and b (a * b == |a| * |b| * cos(a, b))

void vertex_cross ( Vertex dst,

const Vertex src

)

Compute the cross product of two vertices. dst = dst x src
Parameters:

dst The destination vertex and the first factor

src The second factor

float vertex_length ( const Vertex src )

Compute the euclidean length of a vertex.
Parameters:

src The vertex

Returns:
The euclidean length of vertex src (|src|)

void vertex_normalize ( Vertex dst )

Normalize a vertex so that its length is 1.
Parameters:

dst The vertex to normalize


Defines
#define	LSG_VERTEX_H 1
Typedefs
typedef float	Vertex [3]
	3 dimensional vector
Functions
void	vertex_assign (Vertex dst, float x, float y, float z)
void	vertex_copy (Vertex dst, const Vertex src)
void	vertex_add (Vertex dst, const Vertex src)
void	vertex_sub (Vertex dst, const Vertex src)
void	vertex_mul (Vertex dst, const Vertex src)
void	vertex_div (Vertex dst, const Vertex src)
void	vertex_min (Vertex dst, const Vertex src)
void	vertex_max (Vertex dst, const Vertex src)
void	vertex_scale (Vertex dst, float scale)
float	vertex_dot (const Vertex a, const Vertex b)
void	vertex_cross (Vertex dst, const Vertex src)
float	vertex_length (const Vertex src)
void	vertex_normalize (Vertex dst)