SoShaderStateMatrixParameter.3coin4 - Man Page

The SoShaderStateMatrixParameter class is used to define a matrix as shader parameter whose content is derived from the traversal state.

Synopsis

#include <Inventor/nodes/SoShaderParameter.h>

Inherits SoUniformShaderParameter.

Public Types

enum MatrixType { MODELVIEW, PROJECTION, TEXTURE, MODELVIEW_PROJECTION }
enum MatrixTransform { IDENTITY, TRANSPOSE, INVERSE, INVERSE_TRANSPOSE }

Public Member Functions

virtual SoType getTypeId (void) const
Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and 'downward' casting.
virtual void updateParameter (SoGLShaderObject *shaderObject)
Updates the shader parameter in the OpenGL state with the content of the value field.
virtual void updateValue (SoState *state)

Static Public Member Functions

static SoType getClassTypeId (void)
static void initClass (void)

Public Attributes

SoSFEnum matrixType
SoSFEnum matrixTransform

Protected Member Functions

virtual const SoFieldData * getFieldData (void) const

Static Protected Member Functions

static const SoFieldData ** getFieldDataPtr (void)

Protected Attributes

SbMatrix value

Additional Inherited Members

Detailed Description

The SoShaderStateMatrixParameter class is used to define a matrix as shader parameter whose content is derived from the traversal state.

Unlike other parameter classes, SoShaderStateMatrixParameter does not have a value field. The value member is protected and updated automatically from the traversal state.

Member Enumeration Documentation

enum SoShaderStateMatrixParameter::MatrixType

Defines the different matrix types.

enum SoShaderStateMatrixParameter::MatrixTransform

Defines different transformations that can be applied to a matrix.

Member Function Documentation

SoType SoShaderStateMatrixParameter::getTypeId (void) const [virtual]

Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and 'downward' casting. Usage example:

void foo(SoNode * node)
{
  if (node->getTypeId() == SoFile::getClassTypeId()) {
    SoFile * filenode = (SoFile *)node;  // safe downward cast, knows the type
  }
}

For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.

For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.

Reimplemented from SoUniformShaderParameter.

const SoFieldData * SoShaderStateMatrixParameter::getFieldData (void) const [protected], [virtual]

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoUniformShaderParameter.

void SoShaderStateMatrixParameter::updateValue (SoState * state) [virtual]

Updates matrix value from state

Member Data Documentation

SoSFEnum SoShaderStateMatrixParameter::matrixType

Defines the matrix type value for the uniform shader variable.

SoSFEnum SoShaderStateMatrixParameter::matrixTransform

Defines a transformation that is applied to the matrix value. The default value of IDENTITY keeps the value unchanged.

Author

Generated automatically by Doxygen for Coin from the source code.

Info

Sat Aug 1 2020 Version 4.0.0 Coin