Inheritance diagram for osg::ImpostorSprite:
Public Methods | |
ImpostorSprite () | |
virtual Object * | cloneType () const |
Clone an object of the same type as an ImpostorSprite. | |
virtual Object * | clone (const CopyOp &) const |
Clone on ImpostorSprite just returns a clone of type, since it is not appropriate to share data of an ImpostorSprite. | |
virtual bool | isSameKindAs (const Object *obj) const |
virtual const char * | libraryName () const |
return the name of the object's library. | |
virtual const char * | className () const |
return the name of the object's class type. | |
void | setParent (Impostor *parent) |
Set the parent, which must be an Impostor. | |
Impostor * | getParent () |
Get the parent, which is an Impostor. | |
const Impostor * | getParent () const |
Get the const parent, which is an Impostor. | |
void | setStoredLocalEyePoint (const Vec3 &v) |
Set the eye point for when the ImpsotorSprite was snapped. | |
const Vec3 & | getStoredLocalEyePoint () const |
Get the eye point for when the ImpsotorSprite was snapped. | |
void | setLastFrameUsed (const int frameNumber) |
Set the frame number for when the ImpostorSprite was last used in rendering. | |
int | getLastFrameUsed () const |
Get the frame number for when the ImpostorSprite was last used in rendering. | |
Vec3 * | getCoords () |
Get the coordinates of the corners of the quad. | |
const Vec3 * | getCoords () const |
Get the const coordinates of the corners of the quad. | |
Vec2 * | getTexCoords () |
Get the texture coordinates of the corners of the quad. | |
const Vec2 * | getTexCoords () const |
Get the const texture coordinates of the corners of the quad. | |
Vec3 * | getControlCoords () |
Get the control coordinates of the corners of the quad. | |
const Vec3 * | getControlCoords () const |
Get the const control coordinates of the corners of the quad. | |
const float | calcPixelError (const Matrix &MVPW) const |
calculate the pixel error value for passing in the ModelViewProjectionWindow transform, which transform local coords into screen space. | |
void | setTexture (Texture2D *tex, int s, int t) |
Texture2D * | getTexture () |
const Texture2D * | getTexture () const |
const int | s () const |
const int | t () const |
virtual void | drawImmediateMode (State &state) |
draw ImpostorSprite directly. | |
virtual void | accept (AttributeFunctor &af) |
accept an AttributeFunctor and call its methods to tell it about the interal attributes that this Drawable has. | |
virtual void | accept (PrimitiveFunctor &pf) |
accept a PrimtiveFunctor and call its methods to tell it about the interal primtives that this Drawable has. | |
Protected Methods | |
ImpostorSprite (const ImpostorSprite &) | |
ImpostorSprite & | operator= (const ImpostorSprite &) |
virtual | ~ImpostorSprite () |
virtual const bool | computeBound () const |
compute the bounding box of the drawable. | |
Protected Attributes | |
Impostor * | _parent |
ImpostorSpriteManager * | _ism |
ImpostorSprite * | _previous |
ImpostorSprite * | _next |
int | _lastFrameUsed |
Vec3 | _storedLocalEyePoint |
Vec3 | _coords [4] |
Vec2 | _texcoords [4] |
Vec3 | _controlcoords [4] |
Texture2D * | _texture |
int | _s |
int | _t |
Friends | |
class | osg::ImpostorSpriteManager |
The ImposterSprite is generated by rendering the original 3D geometry to a texture as an image cache. The ImpostorSprite is automatically generated by the osgUtil::CullVisitor so it not necessary to deal with it directly.
|
|
|
|
|
|
|
accept a PrimtiveFunctor and call its methods to tell it about the interal primtives that this Drawable has.
Reimplemented from osg::Drawable. |
|
accept an AttributeFunctor and call its methods to tell it about the interal attributes that this Drawable has.
Reimplemented from osg::Drawable. |
|
calculate the pixel error value for passing in the ModelViewProjectionWindow transform, which transform local coords into screen space.
|
|
return the name of the object's class type. Must be defined by derived classes. Reimplemented from osg::Drawable. |
|
Clone on ImpostorSprite just returns a clone of type, since it is not appropriate to share data of an ImpostorSprite.
Implements osg::Object. |
|
Clone an object of the same type as an ImpostorSprite.
Implements osg::Object. |
|
compute the bounding box of the drawable. Method must be implemented by subclasses. Reimplemented from osg::Drawable. |
|
draw ImpostorSprite directly.
Implements osg::Drawable. |
|
Get the const control coordinates of the corners of the quad.
|
|
Get the control coordinates of the corners of the quad. The control coordinates are the corners of the quad projected out onto the front face of bounding box which enclosed the impostor geometry when it was pre-rendered into the impostor sprite's texture. At the point of creation/or update of the impostor sprite the control coords will lie on top of the corners of the quad in screen space - with a pixel error or zero. Once the camera moves relative to the impostor sprite the control coords will no longer lie on top of the corners of the quad in screen space - a pixel error will have accumulated. This pixel error can then be used to determine whether the impostor needs to be updated. Stored in the order, [0] - top_left, [1] - bottom_left, [2] - bottom_right, [3] - top_left. |
|
Get the const coordinates of the corners of the quad.
|
|
Get the coordinates of the corners of the quad. Stored in the order, [0] - top_left, [1] - bottom_left, [2] - bottom_right, [3] - top_left. |
|
Get the frame number for when the ImpostorSprite was last used in rendering.
|
|
Get the const parent, which is an Impostor.
|
|
Get the parent, which is an Impostor.
|
|
Get the eye point for when the ImpsotorSprite was snapped.
|
|
Get the const texture coordinates of the corners of the quad.
|
|
Get the texture coordinates of the corners of the quad. Stored in the order, [0] - top_left, [1] - bottom_left, [2] - bottom_right, [3] - top_left. |
|
|
|
|
|
Reimplemented from osg::Drawable. |
|
return the name of the object's library. Must be defined by derived classes. The OpenSceneGraph convention the is that the namspace of a library is the same as the library name. Reimplemented from osg::Drawable. |
|
|
|
|
|
Set the frame number for when the ImpostorSprite was last used in rendering.
|
|
Set the parent, which must be an Impostor. Unlike conventional Drawables, ImpostorSprite's can only ever have one parent. |
|
Set the eye point for when the ImpsotorSprite was snapped.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|