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#include <Inventor/nodes/SoDirectionalLight.h>
Inheritance diagram for SoDirectionalLight:
A directional light source provides a model of light sources which are at infinite distance from the geometry it illuminates, thereby having no set position and consisting of an infinite volume of parallel rays.
This is of course a simplified model of far-away light sources, as "infinite distance" is impossible.
The sun shining on objects on earth is a good example of something which can be modeled rather well for the most common purposes with a directional light source.
See also documentation of parent class for important information regarding light sources in general.
Public Member Functions | |
virtual SoType | getTypeId (void) const |
SoDirectionalLight (void) | |
virtual void | GLRender (SoGLRenderAction *action) |
Static Public Member Functions | |
SoType | getClassTypeId (void) |
void | initClass (void) |
Public Attributes | |
SoSFVec3f | direction |
Protected Member Functions | |
virtual const SoFieldData * | getFieldData (void) const |
virtual | ~SoDirectionalLight () |
Static Protected Member Functions | |
const SoFieldData ** | getFieldDataPtr (void) |
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Constructor. |
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Destructor. |
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This static method returns the SoType object associated with objects of this class. Reimplemented from SoLight. Reimplemented in SoDirectionalLightManip. |
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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:
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 SoLight. Reimplemented in SoDirectionalLightManip. |
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This API member is considered internal to the library, as it is not likely to be of interest to the application programmer. Reimplemented from SoLight. Reimplemented in SoDirectionalLightManip. |
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Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns Reimplemented from SoLight. Reimplemented in SoDirectionalLightManip. |
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Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system. Reimplemented from SoLight. Reimplemented in SoDirectionalLightManip. |
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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 SoNode. Reimplemented in SoDirectionalLightManip. |
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The direction of the light source. Defaults to pointing along the negative z-axis. |
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