ccNormalCompressor Class Reference

Normal compressor. More...

#include <ecvNormalCompressor.h>

Static Public Member Functions
static unsigned	Compress (const PointCoordinateType N[3])
	Compression algorithm. More...
static void	Decompress (unsigned index, PointCoordinateType N[3], unsigned char level=QUANTIZE_LEVEL)
	Decompression algorithm. More...
static void	InvertNormal (CompressedNormType &code)
	Inverts a (compressed) normal. More...

Static Public Attributes
static const unsigned char	QUANTIZE_LEVEL
	Compressed normals quantization level (number of directions: 2^(2*N+3)) More...
static const unsigned	MAX_VALID_NORM_CODE
	Last valid normal code. More...
static const unsigned	NULL_NORM_CODE = MAX_VALID_NORM_CODE + 1
	Null normal code. More...

Detailed Description

Normal compressor.

Definition at line 16 of file ecvNormalCompressor.h.

Member Function Documentation

Compress()

unsigned ccNormalCompressor::Compress ( const PointCoordinateType  N[3] )

static

Compression algorithm.

compute in which sector lie the elements

scale the sectored vector - early return for null vector

compute the box

then for each required level, quantize...

Definition at line 23 of file ecvNormalCompressor.cpp.

References NULL_NORM_CODE, QUANTIZE_LEVEL, x, y, and z.

Referenced by ccNormalVectors::GetNormIndex().

Decompress()

void ccNormalCompressor::Decompress ( unsigned  index, PointCoordinateType  N[3], unsigned char  level = QUANTIZE_LEVEL  )

static

Decompression algorithm.

special case for the null code

recompute the box in the sector...

Definition at line 119 of file ecvNormalCompressor.cpp.

References NULL_NORM_CODE.

Referenced by ccNormalVectors::init().

InvertNormal()

void ccNormalCompressor::InvertNormal ( CompressedNormType &  code )

static

Inverts a (compressed) normal.

Definition at line 16 of file ecvNormalCompressor.cpp.

References NULL_NORM_CODE, and QUANTIZE_LEVEL.

Referenced by ccPointCloud::invertNormals(), and ccMesh::invertPerTriangleNormals().

Member Data Documentation

MAX_VALID_NORM_CODE

const unsigned ccNormalCompressor::MAX_VALID_NORM_CODE

static

Initial value:

=
            (1 << (QUANTIZE_LEVEL * 2 + 3)) - 1

Last valid normal code.

Definition at line 25 of file ecvNormalCompressor.h.

NULL_NORM_CODE

const unsigned ccNormalCompressor::NULL_NORM_CODE = MAX_VALID_NORM_CODE + 1

static

Null normal code.

Definition at line 28 of file ecvNormalCompressor.h.

Referenced by Compress(), Decompress(), ccNormalVectors::init(), and InvertNormal().

QUANTIZE_LEVEL

const unsigned char ccNormalCompressor::QUANTIZE_LEVEL

static

Initial value:

=
            9

Compressed normals quantization level (number of directions: 2^(2*N+3))

Warning

Never pass a 'constant initializer' by reference

Definition at line 21 of file ecvNormalCompressor.h.

Referenced by Compress(), and InvertNormal().

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The documentation for this class was generated from the following files:

• /root/ACloudViewer/libs/CV_db/include/ecvNormalCompressor.h
• /root/ACloudViewer/libs/CV_db/src/ecvNormalCompressor.cpp