PRIM PHYSICS MATERIAL

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/LSL

PRIM_PHYSICS_MATERIAL

	LSL Feature Request
	The described constant does not exist. This article is a feature request.

Description

Constant: integer PRIM_PHYSICS_MATERIAL = 31;

The integer constant PRIM_PHYSICS_MATERIAL has the value 31

PRIM_PHYSICS_MATERIAL is used to get or set the prim's physics material properties.

llSetPrimitiveParams

llSetPrimitiveParams([ PRIM_PHYSICS_MATERIAL, integer material_bits, float gravity_multiplier, float restitution, float friction, float density ]);

• integer	material_bits
• float	gravity_multiplier	–	range [-1.0, +28.0], default: 1.0
• float	restitution	–	range [0.0, 1.0], default: [0.3, 0.9] [1]
• float	friction	–	range [0.0, 255.0], default: [0.2, 0.9][1]
• float	density	–	range [1.0, 22587.0] kg/m^3, default: 1000.0

When used with llSetPrimitiveParams & llSetLinkPrimitiveParams

llGetPrimitiveParams

llGetPrimitiveParams([ PRIM_PHYSICS_MATERIAL ]);

Returns the list [ integer material_bits, float gravity_multiplier, float restitution, float friction, float density ]

• integer	material_bits
• float	gravity_multiplier	–	range [-1.0, +28.0], default: 1.0
• float	restitution	–	range [0.0, 1.0], default: [0.3, 0.9] [1]
• float	friction	–	range [0.0, 255.0], default: [0.2, 0.9][1]
• float	density	–	range [1.0, 22587.0] kg/m^3, default: 1000.0

mask Flags	V	Description
DENSITY	1	Indicates that density parameter is enabled and will override the previous value.
FRICTION	2	Indicates that friction parameter is enabled and will override the previous value.
RESTITUTION	4	Indicates that restitution parameter is enabled and will override the previous value.
GRAVITY_MULTIPLIER	8	Indicates that gravity_multiplier parameter is enabled and will override the previous value.

Caveats

• A collision between two objects with restitution 1.0 will still not be perfectly elastic due to damping in the physics engine.

Related Articles

Functions

•	llGetPrimitiveParams
•	llGetLinkPrimitiveParams
•	llSetPrimitiveParams
•	llSetLinkPrimitiveParams
•	llSetLinkPrimitiveParamsFast
•	llSetPhysicsMaterial
•	llGetPhysicsMaterial

Deep Notes

History

• Introduced in Second Life RC LeTigre 11.09.09.240509, September 9, 2011
• SLUniverse:Future physics functions tease
• Content taken from Release Notes/Second Life Server/11#11.09.23.241511
• Documentation expanded with information from Physics Material Settings test.

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Footnotes

1. ^ The default values for friction and restitution depend upon the prim's material.
2. ^ The ranges in this article are written in Interval Notation.

Signature
//integer PRIM_PHYSICS_MATERIAL = 31;