# SoText3 Class Reference
[Nodes]

`#include <Inventor/nodes/SoText3.h>`

Inheritance diagram for SoText3:

List of all members.

## Detailed Description

The SoText3 class renders extruded 3D text.

Render text as 3D geometry.

Beware that using a lot of SoText3 text characters in a scene will usually have severe impact on the rendering performance, as each and every character of the text contributes a lot of polygon primitives to the rendering system.

Due to the above mentioned fact, SoText3 nodes are best used in situations where you need just one or a few characters to be placed in your scene, than to visualize e.g. complete sentences.

See also:
  SoText2, SoAsciiText, SoProfile

## Public Types

enum | Part { FRONT = 1, SIDES = 2, BACK = 4, ALL = FRONT|BACK|SIDES }
enum | Justification { LEFT = 1, RIGHT, CENTER }

## Public Member Functions

| SoText3 (void)
SbBox3f | getCharacterBounds (SoState *state, int stringindex, int charindex)
virtual void | GLRender (SoGLRenderAction *action)
virtual void | getPrimitiveCount (SoGetPrimitiveCountAction *action)

## Static Public Member Functions

void | initClass (void)

## Public Attributes

SoMFString | string
SoSFFloat | spacing
SoSFEnum | justification
SoSFBitMask | parts

## Protected Member Functions

virtual | ~SoText3 ()
virtual void | generatePrimitives (SoAction *)
virtual void | computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
virtual SoDetail * | createTriangleDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, const SoPrimitiveVertex *v3, SoPickedPoint *pp)
virtual void | notify (SoNotList *list)

## Friends

class | SoText3P

## Member Enumeration Documentation

enum SoText3::Part

Used to specify which parts should be rendered/generated.

Enumeration values:

  FRONT | Front of characters.
  SIDES | Sides of characters.
  BACK | Back of characters.
  ALL | All parts.

enum SoText3::Justification

Used to specify horizontal string alignment.

Enumeration values:

  LEFT | Left edges of strings are aligned.
  RIGHT | Right edges of strings are aligned.
  CENTER | Strings are centered.

## Constructor & Destructor Documentation

SoText3::SoText3 | ( | void |  | ) |

| Constructor.

SoText3::~SoText3 | ( |  | ) | `[protected, virtual]`

| Destructor.

## Member Function Documentation

void SoText3::initClass | ( | void |  | ) | `[static]`

| Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system. Reimplemented from SoShape.

SbBox3f SoText3::getCharacterBounds | ( | SoState * | state,
|  | int | stringindex,
|  | int | charindex
| ) |

| Not implemented. Should probably have been private in OIV. Let us know if you need this method for anything, and we'll implement it.

void SoText3::GLRender | ( | SoGLRenderAction * | action | ) | `[virtual]`

| Action method for the SoGLRenderAction. This is called during rendering traversals. Nodes influencing the rendering state in any way or who wants to throw geometry primitives at OpenGL overrides this method. Reimplemented from SoShape.

void SoText3::getPrimitiveCount | ( | SoGetPrimitiveCountAction * | action | ) | `[virtual]`

| Action method for the SoGetPrimitiveCountAction. Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the action. Nodes influencing how geometry nodes calculates their primitive count also overrides this method to change the relevant state variables. Reimplemented from SoShape.

void SoText3::generatePrimitives | ( | SoAction * | action | ) | `[protected, virtual]`

The method implements action behavior for shape nodes for SoCallbackAction. It is invoked from SoShape::callback(). (Subclasses should not override SoNode::callback().)

The subclass implementations uses the convenience methods SoShape::beginShape(), SoShape::shapeVertex(), and SoShape::endShape(), with SoDetail instances, to pass the primitives making up the shape back to the caller.

Implements SoShape.

void SoText3::computeBBox | ( | SoAction * | action,
|  | SbBox3f & | box,
|  | SbVec3f & | center
| ) | `[protected, virtual]`

Implemented by SoShape subclasses to let the SoShape superclass know the exact size and weighted center point of the shape's bounding box.

The bounding box and center point should be calculated and returned in the local coordinate system.

The method implements action behavior for shape nodes for SoGetBoundingBoxAction. It is invoked from SoShape::getBoundingBox(). (Subclasses should not override SoNode::getBoundingBox().)

The box parameter sent in is guaranteed to be an empty box, while center is undefined upon function entry.

Implements SoShape.

SoDetail * SoText3::createTriangleDetail | ( | SoRayPickAction * | action,
|  | const SoPrimitiveVertex * | v1,
|  | const SoPrimitiveVertex * | v2,
|  | const SoPrimitiveVertex * | v3,
|  | SoPickedPoint * | pp
| ) | `[protected, virtual]`

Will create triangle detail for a SoPickedPoint. This method will only be called internally, when generatePrimitives() is used for picking (SoShape::rayPick() is not overridden).

This method returns `NULL` in Open Inventor, and subclasses will need to override this method to create details for a SoPickedPoint.

This is not necessary with Coin. Of course, if you choose to override it, it will work in the same way as Open Inventor.

For this to work, you must supply a face or line detail when generating primitives. If you supply `NULL` for the detail argument in SoShape::beginShape(), you'll have to override this method.

Reimplemented from SoShape.

void SoText3::notify | ( | SoNotList * | list | ) | `[protected, virtual]`

| Notifies all auditors for this instance when changes are made. Reimplemented from SoShape.

## Member Data Documentation

SoMFString SoText3::string

| The strings. Defaults to empty set.

SoSFFloat SoText3::spacing

| Vertical spacing. 1.0 is the default spacing.

SoSFEnum SoText3::justification

| Horizontal justification. Default is alignment at the left border.

SoSFBitMask SoText3::parts

| Character parts. Default is to show only the front-facing part.

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

- SoText3.h
- SoText3.cpp