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SoSFImage3 Class Reference

The SoSFImage3 class is used to store 3D (volume) images. More...

#include <Inventor/fields/SoSFImage3.h>

Inheritance diagram for SoSFImage3:
SoSField SoField

Public Member Functions

virtual SoType getTypeId (void) const
 
virtual void copyFrom (const SoField &field)
 
const SoSFImage3operator= (const SoSFImage3 &field)
 
virtual SbBool isSame (const SoField &field) const
 
const unsigned char * getValue (SbVec3s &size, int &nc) const
 
void setValue (const SbVec3s &size, const int nc, const unsigned char *bytes)
 
int operator== (const SoSFImage3 &field) const
 
int operator!= (const SoSFImage3 &field) const
 
unsigned char * startEditing (SbVec3s &size, int &nc)
 
void finishEditing (void)
 
- Public Member Functions inherited from SoSField
virtual ~SoSField ()
 
- Public Member Functions inherited from SoField
virtual ~SoField ()
 
void setIgnored (SbBool ignore)
 
SbBool isIgnored (void) const
 
void setDefault (SbBool defaultVal)
 
SbBool isDefault (void) const
 
SbBool isOfType (const SoType type) const
 
void enableConnection (SbBool flag)
 
SbBool isConnectionEnabled (void) const
 
SbBool connectFrom (SoEngineOutput *master, SbBool notnotify=FALSE, SbBool append=FALSE)
 
SbBool appendConnection (SoEngineOutput *master, SbBool notnotify=FALSE)
 
void disconnect (SoEngineOutput *engineoutput)
 
SbBool isConnectedFromEngine (void) const
 
SbBool getConnectedEngine (SoEngineOutput *&master) const
 
SbBool connectFrom (SoField *master, SbBool notnotify=FALSE, SbBool append=FALSE)
 
SbBool appendConnection (SoField *master, SbBool notnotify=FALSE)
 
void disconnect (SoField *field)
 
SbBool isConnectedFromField (void) const
 
SbBool getConnectedField (SoField *&master) const
 
int getNumConnections (void) const
 
int getForwardConnections (SoFieldList &slavelist) const
 
int getConnections (SoFieldList &masterlist) const
 
void disconnect (void)
 
SbBool isConnected (void) const
 
void setContainer (SoFieldContainer *cont)
 
SoFieldContainergetContainer (void) const
 
SbBool set (const char *valuestring)
 
void get (SbString &valuestring)
 
SbBool shouldWrite (void) const
 
virtual void touch (void)
 
virtual void startNotify (void)
 
virtual void notify (SoNotList *nlist)
 
SbBool enableNotify (SbBool on)
 
SbBool isNotifyEnabled (void) const
 
void addAuditor (void *f, SoNotRec::Type type)
 
void removeAuditor (void *f, SoNotRec::Type type)
 
int operator== (const SoField &f) const
 
int operator!= (const SoField &f) const
 
virtual void connectionStatusChanged (int numconnections)
 
SbBool isReadOnly (void) const
 
virtual void fixCopy (SbBool copyconnections)
 
virtual SbBool referencesCopy (void) const
 
void copyConnection (const SoField *fromfield)
 
virtual SbBool read (SoInput *input, const SbName &name)
 
virtual void write (SoOutput *out, const SbName &name) const
 
virtual void countWriteRefs (SoOutput *out) const
 
void setFieldType (int type)
 
int getFieldType (void) const
 
SbBool getDirty (void) const
 
void setDirty (SbBool dirty)
 
void evaluate (void) const
 

Static Public Member Functions

static void * createInstance (void)
 
static SoType getClassTypeId (void)
 
static void initClass (void)
 
- Static Public Member Functions inherited from SoSField
static void initClass (void)
 
static SoType getClassTypeId (void)
 
static void atexit_cleanup (void)
 
- Static Public Member Functions inherited from SoField
static void initClass (void)
 
static void initClasses (void)
 
static void cleanupClass (void)
 
static SoType getClassTypeId (void)
 

Additional Inherited Members

- Public Types inherited from SoField
enum  FieldType { NORMAL_FIELD = 0, EVENTIN_FIELD, EVENTOUT_FIELD, EXPOSED_FIELD }
 
- Protected Member Functions inherited from SoSField
 SoSField (void)
 
- Protected Member Functions inherited from SoField
 SoField (void)
 
void valueChanged (SbBool resetdefault=TRUE)
 
virtual void evaluateConnection (void) const
 
virtual SbBool readConnection (SoInput *in)
 
virtual void writeConnection (SoOutput *out) const
 
SbBool isDestructing (void) const
 
virtual SoNotRec createNotRec (SoBase *cont)
 

Detailed Description

The SoSFImage3 class is used to store 3D (volume) images.

The SoSFImage3 class provides storage for inline 3D image maps. 3D images in Coin are mainly used for 3D texture mapping support.

SoSFImage3 instances can be exported and imported as any other field class in Coin.

The components of an SoSFImage3 is: its image dimensions (width, height and depth), the number of bytes used for describing each pixel (number of components) and an associated pixel buffer. The size of the pixel buffer will be width*height*depth*components.

For texture maps, the components / bytes-per-pixel setting translates as follows: use 1 for a grayscale imagemap, 2 for grayscale + opacity (i.e. alpha value), 3 for RGB (1 byte each for red, green and blue) and 4 components means 3 bytes for RGB + 1 byte opacity value (aka RGBA).

This field is serializable into the Inventor / Coin file format in the following manner:

FIELDNAME X Y Z C 0xRRGGBBAA 0xRRGGBBAA ...

"X", "Y" and "Z" are the image dimensions along the given axes, "C" is the number of components in the image. The number of 0xRRGGBBAA pixel color specifications needs to equal the exact number of pixels, which is X*Y*Z. Each part of the pixel color value is in the range 0x00 to 0xff (hexadecimal, 0 to 255 decimal).

For 3-component images, the pixel-format is 0xXXRRGGBB, where the byte in the pixel color value marked as "XX" is ignored and can be left out.

For 2-component images, the pixel-format is 0xXXXXGGAA, where the bytes in the pixel color values marked as "XX" are ignored and can be left out. "GG" is the part which gives a grayscale value and "AA" is for opacity.

For 1-component images, the pixel-format is 0xXXXXXXGG, where the bytes in the pixel color values marked as "XX" are ignored and can be left out.

The pixels are read as being ordered in rows along X (width), columns along Y (height, bottom to top) and Z "planes" (depth, front to back).

Here's a simple example of the file format serialization, for a 2x2x2 RGB-image inside an SoTexture3 node:

Texture3 {
images 2 2 2 3
0x000000 0x00ff00
0xff0000 0xffff00
0x000000 0x0000ff
0x00ff00 0x00ffff
}

The image above is colored black+green on the first line and red+yellow on the second line in the first Z plane. The second Z plane is colored black+blue on the first line and green+cyan on the second line.

Be aware that this class is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.

See also
SoTexture3, SoSFImage
Since
Coin 2.0
TGS Inventor 2.6

Member Function Documentation

◆ getTypeId()

SoType SoSFImage3::getTypeId ( void  ) const
virtual

Returns the type identification instance which uniquely identifies the Coin field class the object belongs to.

See also
getClassTypeId(), SoType

Implements SoField.

◆ copyFrom()

void SoSFImage3::copyFrom ( const SoField f)
virtual

Copy value(s) from f into this field. f must be of the same type as this field.

Implements SoField.

◆ isSame()

SbBool SoSFImage3::isSame ( const SoField f) const
virtual

Check for equal type and value(s).

Implements SoField.

◆ getValue()

const unsigned char * SoSFImage3::getValue ( SbVec3s size,
int nc 
) const

Return pixel buffer, set size to contain the image dimensions and nc to the number of components in the image.

◆ setValue()

void SoSFImage3::setValue ( const SbVec3s size,
const int  nc,
const unsigned char *  bytes 
)

Initialize this field to size and nc.

If bytes is not NULL, the image data is copied from bytes into this field. If bytes is NULL, the image data is cleared by setting all bytes to 0 (note that the behavior on passing a NULL pointer is specific for Coin, Open Inventor will crash if you try it).

◆ operator==()

int SoSFImage3::operator== ( const SoSFImage3 field) const

Compare image of field with the image in this field and return TRUE if they are equal.

◆ operator!=()

int SoSFImage3::operator!= ( const SoSFImage3 field) const
inline

Compare image of field with the image in this field and return FALSE if they are equal.

◆ startEditing()

unsigned char * SoSFImage3::startEditing ( SbVec3s size,
int nc 
)

Return pixel buffer, set size to contain the image dimensions and nc to the number of components in the image.

The field's container will not be notified about the changes until you call finishEditing().

◆ finishEditing()

void SoSFImage3::finishEditing ( void  )

Notify the field's auditors that the image data have been modified.


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