<rigid_body>/<extra>/<technique profile="PhysX_3.x"> Element
- Specification Version: 1.4.1
- Category: (Physics) Physics Model
Introduction
- COLLADA format allows Physics scene description. However only a small set of parameters are supported. This extension allows to embed full set of parameters supported by PhysX 3.x.
- See PhysX 3.x documentation for further details about each parameter.
Note relative to transforms
- COLLADA does not define any transform for <rigid_body> element and supposes rigid body's initial transform is taken from <instance_rigid_body>’s target. In Maya, a rigid body can have a different transform than its targeted node. Importers can use <global_pose> element to get the actual transform used by PhysX SDK in Maya. Importing and using <global_pose> is optional but if an importer chooses to use <global_pose> then it must use <shape>/<extra>/<technique profile=”PhysX_3.3”>/<local_pose> and <rigid_constraint>/<extra>/<technique profile=”PhysX_3.3”>/<local_pose0>|<local_pose1> and ignore standard COLLADA shape transform and constraint <ref_attachment>/<attachment> transforms.
Related Elements
| Affected Parent element(s)
|
<rigid_body>
|
| Extra and/or Technique
|
<extra>/<technique profile=”PhysX_3.x”>
|
| Child elements
|
See following section
|
Child Elements
| Name |
Description |
Default |
Occurrences
|
| <px_rigid_body> |
Extension’s root element. |
N/A |
0 or 1
|
Child Elements for px_rigid_body
- Child elements must appear in the following order if present:
| Name |
Description |
Default |
Occurrences
|
| <px_rigid_body> |
Extension’s root element. |
N/A |
0 or 1
|
| <global_pose sid=”...”> |
7 floating point values: 4 for rotation quaternion and 3 for translation. |
N/A |
1
|
| <actor_flags> |
Any combination of VISUALIZATION, DISABLE_GRAVITY, SEND_SLEEP_NOTIFIES, DISABLE_SIMULATION. See PxActorFlags documentation. |
VISUALIZATION |
0 or 1
|
| <dominance_group> |
integer |
0 |
0 or 1
|
| <owner_client> |
integer |
0 |
0 or 1
|
| <rigid_body_flags> |
See PxRigidBodyFlags. Can be any combination of KINEMATIC, USE_KINEMATIC_TARGET_FOR_SCENE_QUERIES, ENABLE_CCD, ENABLE_CCD_FRICTION. |
No flag |
0 or 1
|
| <min_ccd_advance_coefficient sid=”...”> |
Floating point value. |
0.15 |
0 or 1
|
| <max_depenetration_velocity sid=”...”> |
Floating point value |
INF |
0 or 1
|
| <linear_damping sid=”...”> |
Floating point value |
0 |
0 or 1
|
| <angular_damping sid=”...”> |
Floating point value |
0 |
0 or 1
|
| <max_angular_velocity sid=”...”> |
Floating point value |
7.0 |
0 or 1
|
| <sleep_threshold sid=”...”> |
Floating point value |
5e-5 |
0 or 1
|
| <stabilization_threshold sid=”...”> |
Floating point value |
1e-5 |
0 or 1
|
| <wake_counter sid=”...”> |
Floating point value |
0.4 |
0 or 1
|
| <min_position_iters sid=”...”> |
Integer value |
4 |
0 or 1
|
| <min_velocity_iters sid=”...”> |
Integer value |
1 |
0 or 1
|
| <contact_report_threshold sid=”...”> |
Floating point value |
INF |
0 or 1
|
Example
<rigid_body name=”RB0”>
<dynamic>true</dynamic>
...
<extra>
<technique profile=”PhysX_3.x”>
<px_rigid_body>
<global_pose>0 0 0 1 0 0 0</global_pose>
<actor_flags>VISUALIZATION</actor_flags>
<dominance_group>1</dominance_group>
<owner_client>0</owner_client>
<rigid_body_flags>KINEMATIC ENABLE_CCD</rigid_body_flags>
<min_ccd_advance_coefficient>0.15</min_ccd_advance_coefficient>
<max_depenetration_velocity>1e32</max_depenetration_velocity>
<linear_damping>0</linear_damping>
<angular_damping>0</angular_damping>
<max_angular_velocity>7</max_angular_velocity>
<sleep_threshold>5e-7</sleep_threshold>
<stabilization_threshold>24.059</stabilization_threshold>
<wake_counter>0.4</wake_counter>
<min_position_iters>8</min_position_iters>
<min_velocity_iters>4</min_velocity_iters>
<contact_report_threshold>3.40282e38</contact_report_threshold>
</px_rigid_body>
</technique>
</extra>
</rigid_body>