Copies pv into a new #ClutterPaintVolume
Frees the resources allocated by pv
Retrieves the depth of the volume's, axis aligned, bounding box.
In other words; this takes into account what actor's coordinate
space pv belongs too and conceptually fits an axis aligned box
around the volume. It returns the size of that bounding box as
measured along the z-axis.
If, for example, clutter_actor_get_transformed_paint_volume() is used to transform a 2D child actor that is 100px wide, 100px high and 0px deep into container coordinates then the depth might not simply be 0px if the child actor has a 3D rotation applied to it.
Remember: if clutter_actor_get_transformed_paint_volume() is used then the transformed volume will be defined relative to the container actor and in container coordinates a 2D child actor can have a 3D bounding volume.
There are no accuracy guarantees for the reported depth, except that it must always be greater than, or equal to, the actor's depth. This is because actors may report simple, loose fitting paint volumes for efficiency.
Retrieves the height of the volume's, axis aligned, bounding box.
In other words; this takes into account what actor's coordinate
space pv belongs too and conceptually fits an axis aligned box
around the volume. It returns the size of that bounding box as
measured along the y-axis.
If, for example, clutter_actor_get_transformed_paint_volume() is used to transform a 2D child actor that is 100px wide, 100px high and 0px deep into container coordinates then the height might not simply be 100px if the child actor has a 3D rotation applied to it.
Remember: if clutter_actor_get_transformed_paint_volume() is used then a transformed child volume will be defined relative to the ancestor container actor and so a 2D child actor can have a 3D bounding volume.
There are no accuracy guarantees for the reported height, except that it must always be greater than, or equal to, the actor's height. This is because actors may report simple, loose fitting paint volumes for efficiency.
Retrieves the origin of the #ClutterPaintVolume.
Retrieves the width of the volume's, axis aligned, bounding box.
In other words; this takes into account what actor's coordinate
space pv belongs too and conceptually fits an axis aligned box
around the volume. It returns the size of that bounding box as
measured along the x-axis.
If, for example, clutter_actor_get_transformed_paint_volume() is used to transform a 2D child actor that is 100px wide, 100px high and 0px deep into container coordinates then the width might not simply be 100px if the child actor has a 3D rotation applied to it.
Remember: if clutter_actor_get_transformed_paint_volume() is used then a transformed child volume will be defined relative to the ancestor container actor and so a 2D child actor can have a 3D bounding volume.
There are no accuracy guarantees for the reported width, except that it must always be greater than, or equal to, the actor's width. This is because actors may report simple, loose fitting paint volumes for efficiency.
Sets the depth of the paint volume. The depth is measured along
the z axis in the actor coordinates that pv is associated with.
the depth of the paint volume, in pixels
Sets the #ClutterPaintVolume from the allocation of actor.
This function should be used when overriding the #ClutterActorClass.get_paint_volume() by #ClutterActor sub-classes that do not paint outside their allocation.
A typical example is:
|[ static gboolean my_actor_get_paint_volume (ClutterActor *self, ClutterPaintVolume *volume) { return clutter_paint_volume_set_from_allocation (volume, self); }
@param actor a #ClutterActor
Sets the height of the paint volume. The height is measured along
the y axis in the actor coordinates that pv is associated with.
the height of the paint volume, in pixels
Sets the origin of the paint volume.
The origin is defined as the X, Y and Z coordinates of the top-left corner of an actor's paint volume, in actor coordinates.
The default is origin is assumed at: (0, 0, 0)
a #ClutterVertex
Sets the width of the paint volume. The width is measured along
the x axis in the actor coordinates that pv is associated with.
the width of the paint volume, in pixels
Updates the geometry of pv to encompass pv and another_pv.
There are no guarantees about how precisely the two volumes will be unioned.
A second #ClutterPaintVolume to union with pv
Unions the 2D region represented by box to a #ClutterPaintVolume.
This function is similar to clutter_paint_volume_union(), but it is specific for 2D regions.
a #ClutterActorBox to union to pv
#ClutterPaintVolume is an opaque structure whose members cannot be directly accessed.
A #ClutterPaintVolume represents an a bounding volume whose internal representation isn't defined but can be set and queried in terms of an axis aligned bounding box.
A #ClutterPaintVolume for a #ClutterActor is defined to be relative from the current actor modelview matrix.
Other internal representation and methods for describing the bounding volume may be added in the future.