Panda3D
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A Level-of-Detail node. More...
#include <pandadoc.hpp>
Public Member Functions | |
__init__ (str name) | |
addSwitch (float in, float out) | |
Adds a switch range to the LODNode. | |
clearForceSwitch () | |
Undoes the effect of a previous call to force_switch() and releases the LODNode to once again display the normal level. | |
clearSwitches () | |
Removes the set of switching ranges for the LODNode, presumably in conjunction with removing all of its children. | |
forceSwitch (int index) | |
Forces the LODNode to show the indicated level instead of the level that would normally be shown based on the distance from the camera. | |
const LPoint3 | getCenter () |
Returns the center of the LOD. | |
int | getHighestSwitch () |
Returns the index number of the child with the highest level of detail; that is, the one that is designed to be seen from the closest to the camera. | |
float | getIn (int index) |
Returns the "in" distance of the indicated switch range. | |
list | getIns () |
float | getLodScale () |
Returns the multiplier for lod distances. | |
int | getLowestSwitch () |
Returns the index number of the child with the lowest level of detail; that is, the one that is designed to be seen from the farthest away. | |
int | getNumSwitches () |
Returns the number of switch ranges added to the LODNode. | |
float | getOut (int index) |
Returns the "out" distance of the indicated switch range. | |
list | getOuts () |
hideAllSwitches () | |
Hides all levels, restoring the LODNode to normal operation. | |
hideSwitch (int index) | |
Disables a previous call to show_switch(). | |
bool | isAnyShown () |
Returns true if any switch has been shown with show_switch(), indicating the LODNode is in debug show mode; or false if it is in the normal mode. | |
setCenter (const LPoint3 center) | |
Specifies the center of the LOD. | |
setLodScale (float value) | |
Sets the multiplier for lod distances. | |
bool | setSwitch (int index, float in, float out) |
Changes the switching range of a particular child of the LODNode. | |
showAllSwitches () | |
Shows all levels in their default colors. | |
showSwitch (int index) | |
This is provided as a debugging aid. | |
showSwitch (int index, const LColor color) | |
This is provided as a debugging aid. | |
bool | verifyChildBounds () |
Returns true if the bounding volumes for the geometry of each fhild node entirely fits within the switch_in radius for that child, or false otherwise. | |
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PandaNode | __copy__ () |
object | __deepcopy__ (object memo) |
__init__ (str name) | |
int | __traverse__ (Visitproc visit, void arg) |
addChild (PandaNode child_node, int sort, Thread current_thread) | |
Adds a new child to the node. | |
addStashed (PandaNode child_node, int sort, Thread current_thread) | |
Adds a new child to the node, directly as a stashed child. | |
adjustDrawMask (DrawMask show_mask, DrawMask hide_mask, DrawMask clear_mask) | |
Adjusts the hide/show bits of this particular node. | |
Light | asLight () |
Cross-casts the node to a Light pointer, if it is one of the four kinds of Light nodes, or returns NULL if it is not. | |
clearAttrib (int slot) | |
Removes the render attribute of the given type from this node. | |
clearAttrib (TypeHandle type) | |
Removes the render attribute of the given type from this node. | |
clearBounds () | |
Reverses the effect of a previous call to set_bounds(), and allows the node's bounding volume to be automatically computed once more based on the contents of the node. | |
clearEffect (TypeHandle type) | |
Removes the render effect of the given type from this node. | |
clearEffects (Thread current_thread) | |
Resets this node to have no render effects. | |
clearPythonTag (object key) | |
clearState (Thread current_thread) | |
Resets this node to leave the render state alone. | |
clearTag (str key, Thread current_thread) | |
Removes the value defined for this key on this particular node. | |
clearTransform (Thread current_thread) | |
Resets the transform on this node to the identity transform. | |
clearUnexpectedChange (unsigned int flags) | |
Sets one or more of the PandaNode::UnexpectedChange bits off, indicating that the corresponding property may once again change on this node. | |
PandaNode | combineWith (PandaNode other) |
Collapses this PandaNode with the other PandaNode, if possible, and returns a pointer to the combined PandaNode, or NULL if the two PandaNodes cannot safely be combined. | |
int | compareTags (const PandaNode other) |
Returns a number less than 0, 0, or greater than 0, to indicate the similarity of tags between this node and the other one. | |
copyAllProperties (PandaNode other) | |
Copies the TransformState, RenderState, RenderEffects, tags, Python tags, and the show/hide state from the other node onto this one. | |
copyChildren (PandaNode other, Thread current_thread) | |
Makes another instance of all the children of the other node, copying them to this node. | |
PandaNode | copySubgraph (Thread current_thread) |
Allocates and returns a complete copy of this PandaNode and the entire scene graph rooted at this PandaNode. | |
copyTags (PandaNode other) | |
Copies all of the tags stored on the other node onto this node. | |
int | countNumDescendants () |
Returns the number of nodes at and below this level. | |
int | findChild (PandaNode node, Thread current_thread) |
Returns the index of the indicated child node, if it is a child, or -1 if it is not. | |
int | findParent (PandaNode node, Thread current_thread) |
Returns the index of the indicated parent node, if it is a parent, or -1 if it is not. | |
int | findStashed (PandaNode node, Thread current_thread) |
Returns the index of the indicated stashed node, if it is a stashed child, or -1 if it is not. | |
const RenderAttrib | getAttrib (int slot) |
Returns the render attribute of the indicated type, if it is defined on the node, or NULL if it is not. | |
const RenderAttrib | getAttrib (TypeHandle type) |
Returns the render attribute of the indicated type, if it is defined on the node, or NULL if it is not. | |
const BoundingVolume | getBounds (Thread current_thread) |
Returns the external bounding volume of this node: a bounding volume that contains the user bounding volume, the internal bounding volume, and all of the children's bounding volumes. | |
const BoundingVolume | getBounds (UpdateSeq seq, Thread current_thread) |
This flavor of get_bounds() return the external bounding volume, and also fills in seq with the bounding volume's current sequence number. | |
BoundingVolume::BoundsType | getBoundsType () |
Returns the bounding volume type set with set_bounds_type(). | |
PandaNode | getChild (int n, Thread current_thread) |
Returns the nth child node of this node. | |
list | getChildren () |
int | getChildSort (int n, Thread current_thread) |
Returns the sort index of the nth child node of this node (that is, the number that was passed to add_child()). | |
DrawMask | getDrawControlMask () |
Returns the set of bits in draw_show_mask that are considered meaningful. | |
DrawMask | getDrawShowMask () |
Returns the hide/show bits of this particular node. | |
const RenderEffect | getEffect (TypeHandle type) |
Returns the render effect of the indicated type, if it is defined on the node, or NULL if it is not. | |
const RenderEffects | getEffects (Thread current_thread) |
Returns the complete RenderEffects that will be applied to this node. | |
int | getFancyBits (Thread current_thread) |
Returns the union of all of the enum FancyBits values corresponding to the various "fancy" attributes that are set on the node. | |
const BoundingVolume | getInternalBounds (Thread current_thread) |
Returns the node's internal bounding volume. | |
int | getInternalVertices (Thread current_thread) |
Returns the total number of vertices that will be rendered by this particular node alone, not accounting for its children. | |
CollideMask | getIntoCollideMask () |
Returns the "into" collide mask for this node. | |
CollideMask | getLegalCollideMask () |
Returns the subset of CollideMask bits that may be set for this particular type of PandaNode. | |
int | getNestedVertices (Thread current_thread) |
Returns the total number of vertices that will be rendered by this node and all of its descendents. | |
CollideMask | getNetCollideMask (Thread current_thread) |
Returns the union of all into_collide_mask() values set at CollisionNodes at this level and below. | |
DrawMask | getNetDrawControlMask () |
Returns the set of bits in get_net_draw_show_mask() that have been explicitly set via adjust_draw_mask(), rather than implicitly inherited. | |
DrawMask | getNetDrawShowMask () |
Returns the union of all draw_show_mask values–of renderable nodes only– at this level and below. | |
int | getNumChildren (Thread current_thread) |
Returns the number of child nodes this node has. | |
int | getNumParents (Thread current_thread) |
Returns the number of parent nodes this node has. | |
int | getNumStashed (Thread current_thread) |
Returns the number of stashed nodes this node has. | |
const RenderAttrib | getOffClipPlanes (Thread current_thread) |
Returns a ClipPlaneAttrib which represents the union of all of the clip planes that have been turned off at this level and below. | |
PandaNode | getParent (int n, Thread current_thread) |
Returns the nth parent node of this node. | |
list | getParents () |
const TransformState | getPrevTransform (Thread current_thread) |
Returns the transform that has been set as this node's "previous" position. | |
object | getPythonTag (object key) |
object | getPythonTagKeys () |
object | getPythonTags () |
list | getStashed () |
PandaNode | getStashed (int n, Thread current_thread) |
Returns the nth stashed child of this node. | |
PandaNode::Stashed | getStashed (Thread current_thread) |
Returns an object that can be used to walk through the list of children of the node. | |
int | getStashedSort (int n, Thread current_thread) |
Returns the sort index of the nth stashed node of this node (that is, the number that was passed to add_child()). | |
const RenderState | getState (Thread current_thread) |
Returns the complete RenderState that will be applied to all nodes at this level and below, as set on this node. | |
str | getTag (str key, Thread current_thread) |
Retrieves the user-defined value that was previously set on this node for the particular key, if any. | |
object | getTagKeys () |
const TransformState | getTransform (Thread current_thread) |
Returns the transform that has been set on this particular node. | |
unsigned int | getUnexpectedChange (unsigned int flags) |
Returns nonzero if any of the bits in the input parameter are set on this node, or zero if none of them are set. | |
bool | hasAttrib (int slot) |
Returns true if there is a render attribute of the indicated type defined on this node, or false if there is not. | |
bool | hasAttrib (TypeHandle type) |
Returns true if there is a render attribute of the indicated type defined on this node, or false if there is not. | |
bool | hasDirtyPrevTransform () |
Returns true if this node has the _dirty_prev_transform flag set, which indicates its _prev_transform is different from its _transform value (in pipeline stage 0). | |
bool | hasEffect (TypeHandle type) |
Returns true if there is a render effect of the indicated type defined on this node, or false if there is not. | |
bool | hasPythonTag (object key) |
bool | hasTag (str key, Thread current_thread) |
Returns true if a value has been defined on this node for the particular key (even if that value is the empty string), or false if no value has been set. | |
bool | hasTags () |
Returns true if the node has any tags (or any Python tags) at all, false if it has none. | |
bool | isAmbientLight () |
Returns true if this is an AmbientLight, false if it is not a light, or it is some other kind of light. | |
bool | isBoundsStale () |
Returns true if the bounding volume of this node is stale and will be implicitly recomputed at the next call to get_bounds(), or false if it is fresh and need not be recomputed. | |
bool | isCollisionNode () |
A simple downcast check. | |
bool | isFinal (Thread current_thread) |
Returns the current state of the "final" flag. | |
bool | isGeomNode () |
A simple downcast check. | |
bool | isLodNode () |
A simple downcast check. | |
bool | isOverallHidden () |
Returns true if the node has been hidden to all cameras by clearing its overall bit. | |
bool | isSceneRoot () |
Returns true if this particular node is known to be the render root of some active DisplayRegion associated with the global GraphicsEngine, false otherwise. | |
bool | isUnderSceneRoot () |
Returns true if this particular node is in a live scene graph: that is, it is a child or descendent of a node that is itself a scene root. | |
listTags (Ostream out, str separator) | |
Writes a list of all the tag keys assigned to the node to the indicated stream. | |
ls (Ostream out, int indent_level) | |
Lists all the nodes at and below the current path hierarchically. | |
PandaNode | makeCopy () |
Returns a newly-allocated PandaNode that is a shallow copy of this one. | |
markBoundsStale (Thread current_thread) | |
Indicates that the bounding volume, or something that influences the bounding volume (or any of the other things stored in CData, like net_collide_mask), may have changed for this node, and that it must be recomputed. | |
markInternalBoundsStale (Thread current_thread) | |
Should be called by a derived class to mark the internal bounding volume stale, so that compute_internal_bounds() will be called when the bounding volume is next requested. | |
output (Ostream out) | |
prepareScene (GraphicsStateGuardianBase gsg, const RenderState node_state) | |
Walks through the scene graph beginning at this node, and does whatever initialization is required to render the scene properly with the indicated GSG. | |
removeAllChildren (Thread current_thread) | |
Removes all the children from the node at once, including stashed children. | |
removeChild (int child_index, Thread current_thread) | |
Removes the nth child from the node. | |
bool | removeChild (PandaNode child_node, Thread current_thread) |
Removes the indicated child from the node. | |
removeStashed (int child_index, Thread current_thread) | |
Removes the nth stashed child from the node. | |
bool | replaceChild (PandaNode orig_child, PandaNode new_child, Thread current_thread) |
Searches for the orig_child node in the node's list of children, and replaces it with the new_child instead. | |
replaceNode (PandaNode other) | |
Inserts this node into the scene graph in place of the other one, and removes the other node. | |
resetPrevTransform (Thread current_thread) | |
Resets the transform that represents this node's "previous" position to the same as the current transform. | |
setAttrib (const RenderAttrib attrib, int override) | |
Adds the indicated render attribute to the scene graph on this node. | |
setBound (const BoundingVolume volume) | |
setBounds (const BoundingVolume volume) | |
Resets the bounding volume so that it is the indicated volume. | |
setBoundsType (BoundingVolume::BoundsType bounds_type) | |
Specifies the desired type of bounding volume that will be created for this node. | |
setEffect (const RenderEffect effect) | |
Adds the indicated render effect to the scene graph on this node. | |
setEffects (const RenderEffects effects, Thread current_thread) | |
Sets the complete RenderEffects that will be applied this node. | |
setFinal (bool flag) | |
Sets the "final" flag on this PandaNode. | |
setIntoCollideMask (CollideMask mask) | |
Sets the "into" CollideMask. | |
setOverallHidden (bool overall_hidden) | |
Sets or clears the hidden flag. | |
setPrevTransform (const TransformState transform, Thread current_thread) | |
Sets the transform that represents this node's "previous" position, one frame ago, for the purposes of detecting motion for accurate collision calculations. | |
setPythonTag (object key, object value) | |
setState (const RenderState state, Thread current_thread) | |
Sets the complete RenderState that will be applied to all nodes at this level and below. | |
setTag (str key, str value, Thread current_thread) | |
Associates a user-defined value with a user-defined key which is stored on the node. | |
setTransform (const TransformState transform, Thread current_thread) | |
Sets the transform that will be applied to this node and below. | |
setUnexpectedChange (unsigned int flags) | |
Sets one or more of the PandaNode::UnexpectedChange bits on, indicating that the corresponding property should not change again on this node. | |
stashChild (int child_index, Thread current_thread) | |
Stashes the indicated child node. | |
bool | stashChild (PandaNode child_node, Thread current_thread) |
Stashes the indicated child node. | |
stealChildren (PandaNode other, Thread current_thread) | |
Moves all the children from the other node onto this node. | |
unstashChild (int stashed_index, Thread current_thread) | |
Returns the indicated stashed node to normal child status. | |
bool | unstashChild (PandaNode child_node, Thread current_thread) |
Returns the indicated stashed node to normal child status. | |
write (Ostream out, int indent_level) | |
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object | __reduce__ () |
object | __reduce_persist__ (object pickler) |
VectorUchar | encodeToBamStream () |
Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a bytes object. | |
bool | encodeToBamStream (VectorUchar data, BamWriter writer) |
Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. | |
fillin (DatagramIterator scan, BamReader manager) | |
This internal function is intended to be called by each class's make_from_bam() method to read in all of the relevant data from the BamFile for the new object. | |
UpdateSeq | getBamModified () |
Returns the current bam_modified counter. | |
markBamModified () | |
Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. | |
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TypeHandle | getType () |
int | getTypeIndex () |
Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. | |
bool | isExactType (TypeHandle handle) |
Returns true if the current object is the indicated type exactly. | |
bool | isOfType (TypeHandle handle) |
Returns true if the current object is or derives from the indicated type. | |
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int | getRefCount () |
Returns the current reference count. | |
ref () | |
Explicitly increments the reference count. | |
bool | testRefCountIntegrity () |
Does some easy checks to make sure that the reference count isn't completely bogus. | |
bool | testRefCountNonzero () |
Does some easy checks to make sure that the reference count isn't zero, or completely bogus. | |
bool | unref () |
Explicitly decrements the reference count. | |
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__init__ (const Namable) | |
__init__ (str initial_name) | |
clearName () | |
Resets the Namable's name to empty. | |
str | getName () |
bool | hasName () |
Returns true if the Namable has a nonempty name set, false if the name is empty. | |
output (Ostream out) | |
Outputs the Namable. | |
setName (str name) | |
Static Public Member Functions | |
static TypeHandle | getClassType () |
static LODNode | makeDefaultLod (str name) |
Creates a new LODNode of the type specified by the default-lod-type config variable. | |
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static PandaNode | decodeFromBamStream (VectorUchar data, BamReader reader) |
Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on those bytes. | |
static DrawMask | getAllCameraMask () |
Returns a DrawMask that is appropriate for rendering to all cameras. | |
static TypeHandle | getClassType () |
static DrawMask | getOverallBit () |
Returns the special bit that, when specifically cleared in the node's DrawMask, indicates that the node is hidden to all cameras, regardless of the remaining DrawMask bits. | |
static | resetAllPrevTransform (Thread current_thread) |
Visits all nodes in the world with the _dirty_prev_transform flag–that is, all nodes whose _prev_transform is different from the _transform in pipeline stage 0–and resets the _prev_transform to be the same as _transform. | |
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static TypedWritableReferenceCount | decodeFromBamStream (VectorUchar data, BamReader reader) |
Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on those bytes. | |
static TypeHandle | getClassType () |
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static TypeHandle | getClassType () |
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static TypeHandle | getClassType () |
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static TypeHandle | getClassType () |
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static TypeHandle | getClassType () |
Public Attributes | |
const LPoint3 | center |
Returns the center of the LOD. | |
int | highest_switch |
Returns the index number of the child with the highest level of detail; that is, the one that is designed to be seen from the closest to the camera. | |
float | ins [] |
Returns the "in" distance of the indicated switch range. | |
float | lod_scale |
Returns the multiplier for lod distances. | |
int | lowest_switch |
Returns the index number of the child with the lowest level of detail; that is, the one that is designed to be seen from the farthest away. | |
float | outs [] |
Returns the "out" distance of the indicated switch range. | |
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DrawMask | all_camera_mask |
Returns a DrawMask that is appropriate for rendering to all cameras. | |
bool | bounds_stale |
Returns true if the bounding volume of this node is stale and will be implicitly recomputed at the next call to get_bounds(), or false if it is fresh and need not be recomputed. | |
BoundingVolume::BoundsType | bounds_type |
Returns the bounding volume type set with set_bounds_type(). | |
PandaNode::Children | children |
Returns an object that can be used to walk through the list of children of the node. | |
DrawMask | draw_control_mask |
Returns the set of bits in draw_show_mask that are considered meaningful. | |
DrawMask | draw_show_mask |
Returns the hide/show bits of this particular node. | |
ConstPointerToRenderEffects | effects |
Returns the complete RenderEffects that will be applied to this node. | |
bool | final |
Returns the current state of the "final" flag. | |
ConstPointerToBoundingVolume | internal_bounds |
Returns the node's internal bounding volume. | |
int | internal_vertices |
Returns the total number of vertices that will be rendered by this particular node alone, not accounting for its children. | |
CollideMask | into_collide_mask |
Returns the "into" collide mask for this node. | |
CollideMask | legal_collide_mask |
Returns the subset of CollideMask bits that may be set for this particular type of PandaNode. | |
int | nested_vertices |
Returns the total number of vertices that will be rendered by this node and all of its descendents. | |
DrawMask | overall_bit |
Returns the special bit that, when specifically cleared in the node's DrawMask, indicates that the node is hidden to all cameras, regardless of the remaining DrawMask bits. | |
bool | overall_hidden |
Returns true if the node has been hidden to all cameras by clearing its overall bit. | |
PandaNode::Parents | parents |
Returns an object that can be used to walk through the list of parents of the node, similar to get_children() and get_stashed(). | |
ConstPointerToTransformState | prev_transform |
Returns the transform that has been set as this node's "previous" position. | |
object | python_tags |
PandaNode::Stashed | stashed |
Returns the nth stashed child of this node. | |
ConstPointerToRenderState | state |
Returns the complete RenderState that will be applied to all nodes at this level and below, as set on this node. | |
String | tags [] |
Retrieves the user-defined value that was previously set on this node for the particular key, if any. | |
ConstPointerToTransformState | transform |
Returns the transform that has been set on this particular node. | |
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TypeHandle | type |
Returns the TypeHandle representing this object's type. | |
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int | ref_count |
The current reference count. | |
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const String | name |
Additional Inherited Members | |
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enum | FancyBits { FB_transform = 1 , FB_state = 2 , FB_effects = 4 , FB_tag = 16 , FB_draw_mask = 32 , FB_cull_callback = 64 } |
enum | UnexpectedChange { UC_parents = 1 , UC_children = 2 , UC_transform = 4 , UC_state = 8 , UC_draw_mask = 16 } |
A Level-of-Detail node.
This selects only one of its children for rendering, according to the distance from the camera and the table indicated in the associated LOD object.
__init__ | ( | str | name | ) |
addSwitch | ( | float | in, |
float | out ) |
Adds a switch range to the LODNode.
This implies that the corresponding child node has been parented to the node.
The sense of in vs. out distances is as if the object were coming towards you from far away: it switches "in" at the far distance, and switches "out" at the close distance. Thus, "in" should be larger than "out".
clearForceSwitch | ( | ) |
Undoes the effect of a previous call to force_switch() and releases the LODNode to once again display the normal level.
clearSwitches | ( | ) |
Removes the set of switching ranges for the LODNode, presumably in conjunction with removing all of its children.
See add_switch().
forceSwitch | ( | int | index | ) |
Forces the LODNode to show the indicated level instead of the level that would normally be shown based on the distance from the camera.
const LPoint3 getCenter | ( | ) |
Returns the center of the LOD.
This is the point that is compared to the camera (in camera space) to determine the particular LOD that should be chosen.
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static |
int getHighestSwitch | ( | ) |
Returns the index number of the child with the highest level of detail; that is, the one that is designed to be seen from the closest to the camera.
This is usually the last child, but it is not necessarily so.
float getIn | ( | int | index | ) |
Returns the "in" distance of the indicated switch range.
This should be larger than the "out" distance of the same range.
list getIns | ( | ) |
float getLodScale | ( | ) |
Returns the multiplier for lod distances.
int getLowestSwitch | ( | ) |
Returns the index number of the child with the lowest level of detail; that is, the one that is designed to be seen from the farthest away.
This is usually the first child, but it is not necessarily so.
int getNumSwitches | ( | ) |
float getOut | ( | int | index | ) |
Returns the "out" distance of the indicated switch range.
This should be smaller than the "in" distance of the same range.
list getOuts | ( | ) |
hideAllSwitches | ( | ) |
Hides all levels, restoring the LODNode to normal operation.
hideSwitch | ( | int | index | ) |
Disables a previous call to show_switch().
bool isAnyShown | ( | ) |
Returns true if any switch has been shown with show_switch(), indicating the LODNode is in debug show mode; or false if it is in the normal mode.
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static |
Creates a new LODNode of the type specified by the default-lod-type config variable.
setCenter | ( | const LPoint3 | center | ) |
Specifies the center of the LOD.
This is the point that is compared to the camera (in camera space) to determine the particular LOD that should be chosen.
setLodScale | ( | float | value | ) |
Sets the multiplier for lod distances.
A higher value means you'll see farther switchs than normal
bool setSwitch | ( | int | index, |
float | in, | ||
float | out ) |
Changes the switching range of a particular child of the LODNode.
See add_switch().
showAllSwitches | ( | ) |
Shows all levels in their default colors.
showSwitch | ( | int | index | ) |
This is provided as a debugging aid.
show_switch() will put the LODNode into a special mode where rather than computing and drawing the appropriate level of the LOD, a ring is drawn around the LODNode center indicating the switch distances from the camera for the indicated level, and the geometry of the indicated level is drawn in wireframe.
Multiple different levels can be visualized this way at once. Call hide_switch() or hide_all_switches() to undo this mode and restore the LODNode to its normal behavior.
showSwitch | ( | int | index, |
const LColor | color ) |
This is provided as a debugging aid.
show_switch() will put the LODNode into a special mode where rather than computing and drawing the appropriate level of the LOD, a ring is drawn around the LODNode center indicating the switch distances from the camera for the indicated level, and the geometry of the indicated level is drawn in wireframe.
Multiple different levels can be visualized this way at once. Call hide_switch() or hide_all_switches() to undo this mode and restore the LODNode to its normal behavior.
bool verifyChildBounds | ( | ) |
Returns true if the bounding volumes for the geometry of each fhild node entirely fits within the switch_in radius for that child, or false otherwise.
It is almost always a mistake for the geometry of an LOD level to be larger than its switch_in radius.
const LPoint3 center |
Returns the center of the LOD.
This is the point that is compared to the camera (in camera space) to determine the particular LOD that should be chosen.
int highest_switch |
Returns the index number of the child with the highest level of detail; that is, the one that is designed to be seen from the closest to the camera.
This is usually the last child, but it is not necessarily so.
float ins[] |
Returns the "in" distance of the indicated switch range.
This should be larger than the "out" distance of the same range.
float lod_scale |
Returns the multiplier for lod distances.
int lowest_switch |
Returns the index number of the child with the lowest level of detail; that is, the one that is designed to be seen from the farthest away.
This is usually the first child, but it is not necessarily so.
float outs[] |
Returns the "out" distance of the indicated switch range.
This should be smaller than the "in" distance of the same range.