PxPairFlag Struct Reference
[Physics]

Collection of flags describing the actions to take for a collision pair. More...

#include <PxFiltering.h>

List of all members.

Public Types

enum  Enum {
  eSOLVE_CONTACT = (1<<0),
  eMODIFY_CONTACTS = (1<<1),
  eNOTIFY_TOUCH_FOUND = (1<<2),
  eNOTIFY_TOUCH_PERSISTS = (1<<3),
  eNOTIFY_TOUCH_LOST = (1<<4),
  eNOTIFY_TOUCH_CCD = (1<<5),
  eNOTIFY_THRESHOLD_FORCE_FOUND = (1<<6),
  eNOTIFY_THRESHOLD_FORCE_PERSISTS = (1<<7),
  eNOTIFY_THRESHOLD_FORCE_LOST = (1<<8),
  eNOTIFY_CONTACT_POINTS = (1<<9),
  eDETECT_DISCRETE_CONTACT = (1<<10),
  eDETECT_CCD_CONTACT = (1<<11),
  ePRE_SOLVER_VELOCITY = (1<<12),
  ePOST_SOLVER_VELOCITY = (1<<13),
  eCONTACT_EVENT_POSE = (1<<14),
  eNEXT_FREE = (1<<15),
  eCONTACT_DEFAULT = eSOLVE_CONTACT | eDETECT_DISCRETE_CONTACT,
  eTRIGGER_DEFAULT = eNOTIFY_TOUCH_FOUND | eNOTIFY_TOUCH_LOST | eDETECT_DISCRETE_CONTACT
}

Detailed Description

Collection of flags describing the actions to take for a collision pair.

See also:
PxPairFlags PxSimulationFilterShader.filter() PxSimulationFilterCallback

Member Enumeration Documentation

enum PxPairFlag::Enum

Enumerator:
eSOLVE_CONTACT  Process the contacts of this collision pair in the dynamics solver.

Note:
Only takes effect if the colliding actors are rigid bodies.
eMODIFY_CONTACTS  Call contact modification callback for this collision pair.

Note:
Only takes effect if the colliding actors are rigid bodies.
See also:
PxContactModifyCallback
eNOTIFY_TOUCH_FOUND  Call contact report callback or trigger callback when this collision pair starts to be in contact.

If one of the two collision objects is a trigger shape (see PxShapeFlag::eTRIGGER_SHAPE) then the trigger callback will get called as soon as the other object enters the trigger volume. If none of the two collision objects is a trigger shape then the contact report callback will get called when the actors of this collision pair start to be in contact.

Note:
Only takes effect if the colliding actors are rigid bodies.

Only takes effect if eDETECT_DISCRETE_CONTACT or eDETECT_CCD_CONTACT is raised

See also:
PxSimulationEventCallback.onContact() PxSimulationEventCallback.onTrigger()
eNOTIFY_TOUCH_PERSISTS  Call contact report callback while this collision pair is in contact.

If none of the two collision objects is a trigger shape then the contact report callback will get called while the actors of this collision pair are in contact.

Note:
Triggers do not support this event. Persistent trigger contacts need to be tracked separately by observing eNOTIFY_TOUCH_FOUND/eNOTIFY_TOUCH_LOST events.

Only takes effect if the colliding actors are rigid bodies.

No report will get sent if the objects in contact are sleeping.

Only takes effect if eDETECT_DISCRETE_CONTACT or eDETECT_CCD_CONTACT is raised

If this flag gets enabled while a pair is in touch already, there will be no eNOTIFY_TOUCH_PERSISTS events until the pair loses and regains touch.

See also:
PxSimulationEventCallback.onContact() PxSimulationEventCallback.onTrigger()
eNOTIFY_TOUCH_LOST  Call contact report callback or trigger callback when this collision pair stops to be in contact.

If one of the two collision objects is a trigger shape (see PxShapeFlag::eTRIGGER_SHAPE) then the trigger callback will get called as soon as the other object leaves the trigger volume. If none of the two collision objects is a trigger shape then the contact report callback will get called when the actors of this collision pair stop to be in contact.

Note:
Only takes effect if the colliding actors are rigid bodies.

This event will also get triggered if one of the colliding objects gets deleted.

Only takes effect if eDETECT_DISCRETE_CONTACT or eDETECT_CCD_CONTACT is raised

See also:
PxSimulationEventCallback.onContact() PxSimulationEventCallback.onTrigger()
eNOTIFY_TOUCH_CCD  Call contact report callback when this collision pair is in contact during CCD passes.

If CCD with multiple passes is enabled, then a fast moving object might bounce on and off the same object multiple times. Hence, the same pair might be in contact multiple times during a simulation step. This flag will make sure that all the detected collision during CCD will get reported. For performance reasons, the system can not always tell whether the contact pair lost touch in one of the previous CCD passes and thus can also not always tell whether the contact is new or has persisted. eNOTIFY_TOUCH_CCD just reports when the two collision objects were detected as being in contact during a CCD pass.

Note:
Only takes effect if the colliding actors are rigid bodies.

Trigger shapes are not supported.

Only takes effect if eDETECT_CCD_CONTACT is raised

See also:
PxSimulationEventCallback.onContact() PxSimulationEventCallback.onTrigger()
eNOTIFY_THRESHOLD_FORCE_FOUND  Call contact report callback when the contact force between the actors of this collision pair exceeds one of the actor-defined force thresholds.

Note:
Only takes effect if the colliding actors are rigid bodies.

Only takes effect if eDETECT_DISCRETE_CONTACT or eDETECT_CCD_CONTACT is raised

See also:
PxSimulationEventCallback.onContact()
eNOTIFY_THRESHOLD_FORCE_PERSISTS  Call contact report callback when the contact force between the actors of this collision pair continues to exceed one of the actor-defined force thresholds.

Note:
Only takes effect if the colliding actors are rigid bodies.

If a pair gets re-filtered and this flag has previously been disabled, then the report will not get fired in the same frame even if the force threshold has been reached in the previous one (unless eNOTIFY_THRESHOLD_FORCE_FOUND has been set in the previous frame).

Only takes effect if eDETECT_DISCRETE_CONTACT or eDETECT_CCD_CONTACT is raised

See also:
PxSimulationEventCallback.onContact()
eNOTIFY_THRESHOLD_FORCE_LOST  Call contact report callback when the contact force between the actors of this collision pair falls below one of the actor-defined force thresholds (includes the case where this collision pair stops being in contact).

Note:
Only takes effect if the colliding actors are rigid bodies.

If a pair gets re-filtered and this flag has previously been disabled, then the report will not get fired in the same frame even if the force threshold has been reached in the previous one (unless eNOTIFY_THRESHOLD_FORCE_FOUND or eNOTIFY_THRESHOLD_FORCE_PERSISTS has been set in the previous frame).

Only takes effect if eDETECT_DISCRETE_CONTACT or eDETECT_CCD_CONTACT is raised

See also:
PxSimulationEventCallback.onContact()
eNOTIFY_CONTACT_POINTS  Provide contact points in contact reports for this collision pair.

Note:
Only takes effect if the colliding actors are rigid bodies and if used in combination with the flags eNOTIFY_TOUCH_... or eNOTIFY_THRESHOLD_FORCE_...

Only takes effect if eDETECT_DISCRETE_CONTACT or eDETECT_CCD_CONTACT is raised

See also:
PxSimulationEventCallback.onContact() PxContactPair PxContactPair.extractContacts()
eDETECT_DISCRETE_CONTACT  This flag is used to indicate whether this pair generates discrete collision detection contacts.

Note:
Contacts are only responded to if eSOLVE_CONTACT is enabled.
eDETECT_CCD_CONTACT  This flag is used to indicate whether this pair generates CCD contacts.

Note:
The contacts will only be responded to if eSOLVE_CONTACT is enabled on this pair.

The scene must have PxSceneFlag::eENABLE_CCD enabled to use this feature.

Non-static bodies of the pair should have PxRigidBodyFlag::eENABLE_CCD specified for this feature to work correctly.

This flag is not supported with trigger shapes. However, CCD trigger events can be emulated using non-trigger shapes and requesting eNOTIFY_TOUCH_FOUND and eNOTIFY_TOUCH_LOST and not raising eSOLVE_CONTACT on the pair.

See also:
PxRigidBodyFlag::eENABLE_CCD

PxSceneFlag::eENABLE_CCD

ePRE_SOLVER_VELOCITY  Provide pre solver velocities in contact reports for this collision pair.

If the collision pair has contact reports enabled, the velocities of the rigid bodies before contacts have been solved will be provided in the contact report callback unless the pair lost touch in which case no data will be provided.

Note:
Usually it is not necessary to request these velocities as they will be available by querying the velocity from the provided PxRigidActor object directly. However, it might be the case that the velocity of a rigid body gets set while the simulation is running in which case the PxRigidActor would return this new velocity in the contact report callback and not the velocity the simulation used.
See also:
PxSimulationEventCallback.onContact(), PxContactPairVelocity, PxContactPairHeader.extraDataStream
ePOST_SOLVER_VELOCITY  Provide post solver velocities in contact reports for this collision pair.

If the collision pair has contact reports enabled, the velocities of the rigid bodies after contacts have been solved will be provided in the contact report callback unless the pair lost touch in which case no data will be provided.

See also:
PxSimulationEventCallback.onContact(), PxContactPairVelocity, PxContactPairHeader.extraDataStream
eCONTACT_EVENT_POSE  Provide rigid body poses in contact reports for this collision pair.

If the collision pair has contact reports enabled, the rigid body poses at the contact event will be provided in the contact report callback unless the pair lost touch in which case no data will be provided.

Note:
Usually it is not necessary to request these poses as they will be available by querying the pose from the provided PxRigidActor object directly. However, it might be the case that the pose of a rigid body gets set while the simulation is running in which case the PxRigidActor would return this new pose in the contact report callback and not the pose the simulation used. Another use case is related to CCD with multiple passes enabled, A fast moving object might bounce on and off the same object multiple times. This flag can be used to request the rigid body poses at the time of impact for each such collision event.
See also:
PxSimulationEventCallback.onContact(), PxContactPairPose, PxContactPairHeader.extraDataStream
eNEXT_FREE  For internal use only.
eCONTACT_DEFAULT  Provided default flag to do simple contact processing for this collision pair.
eTRIGGER_DEFAULT  Provided default flag to get commonly used trigger behavior for this collision pair.

The documentation for this struct was generated from the following file:

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