Dynamics parameters

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The first set of attributes and properties found on a connect [[Object_properties|object]].
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==== Active ====
 
==== Active ====
 
{| class="wikitable" style="width: 100%"
 
{| class="wikitable" style="width: 100%"
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= Initial velocity =
 
= Initial velocity =
 
==== Linear ====
 
==== Linear ====
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{| class="wikitable" style="width: 100%"
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|-
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! scope="row" width="75" | type
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| vector
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|-
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! scope="row" width="75" | default
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| 0.000 0.000 0.000
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|-
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! scope="row" width="75" |
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| Initial velocity of the current object at the start of the simulation.
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|}
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==== Angular ====
 
==== Angular ====
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{| class="wikitable" style="width: 100%"
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|-
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! scope="row" width="75" | type
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| vector
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|-
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! scope="row" width="75" | default
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| False
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|-
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! scope="row" width="75" |
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| Initial angular velocity of the current object at the start of the simulation. Setting these attributes will give the mesh some spin which can add more natural realism to your simulation.
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|}
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= Energy dissipation =
 
= Energy dissipation =
 
==== Restitution ====
 
==== Restitution ====
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{| class="wikitable" style="width: 100%"
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|-
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! scope="row" width="75" | type
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| float
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|-
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! scope="row" width="75" | default
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| 0.100
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|-
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! scope="row" width="75" | min
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| 0.000
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|-
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! scope="row" width="75" |
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| Fractional value representing the ratio of speeds after and before an impact, taken along the line of the impact.
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|}
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==== Friction ====
 
==== Friction ====
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{| class="wikitable" style="width: 100%"
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|-
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! scope="row" width="75" | type
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| float
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|-
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! scope="row" width="75" | default
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| 0.200
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|-
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! scope="row" width="75" | min
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| 0.000
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|-
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! scope="row" width="75" |
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| Friction resists relative lateral motion of two solid surfaces in contact.
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|}
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==== Linear damping ====
 
==== Linear damping ====
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{| class="wikitable" style="width: 100%"
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|-
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! scope="row" width="75" | type
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| float
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|-
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! scope="row" width="75" | default
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| 0.000
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|-
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! scope="row" width="75" |
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| DISABLED
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|}
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==== Angular damping ====
 
==== Angular damping ====
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{| class="wikitable" style="width: 100%"
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|-
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! scope="row" width="75" | type
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| float
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|-
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! scope="row" width="75" | default
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| 0.000
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|-
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! scope="row" width="75" |
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| DISABLED
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|}
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= Fields =
 
= Fields =
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Displays fields that are connected to the simulator. Each field is displayed in its own check box allowing a user, on a per object basis, to toggle on and off the fields to apply to the current simulation.
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[[File:Object properties fields.png]]

Latest revision as of 23:00, 8 July 2012

The first set of attributes and properties found on a connect object.


Contents

[edit] Active

type bool
default True
Simulates the motion of the body; otherwise the body acts as a passive collision object.

[edit] Deformable

type bool
default False
Track the shape deformation of passive (collision) objects.

[edit] Active on break

type enum
default off
indices off : all fragments : paint/localized only
Normally when an object is connected to a simulator it reacts to gravity the moment the simulation begins.

Active on animated example


When an object has its Active attribute turned off it will not react to gravity. Even at collision time the fragments will generate but not react dynamically and the colliding object will simply bounce off.

Active off animated example


Setting this attribute to "all fragments" will cause all the generated fragments to react dynamically upon collision.

all fragments animated example


The third option, localized, applies to a connected node that has a localized paint map applied to it.

localized animated example


A common mistake that is made is to set a node with a node with a localized paint map to "all fragments". This causes the entire mesh, not just the localized geometry, to react upon a collision event. In the animated example below you will see that the entire mesh begins to fall once the collision happens.

localized mesh with Active on break set to all fragments animated example

[edit] Mass

type float
default 1.000
Mass of the current object.

[edit] Initial velocity

[edit] Linear

type vector
default 0.000 0.000 0.000
Initial velocity of the current object at the start of the simulation.

[edit] Angular

type vector
default False
Initial angular velocity of the current object at the start of the simulation. Setting these attributes will give the mesh some spin which can add more natural realism to your simulation.

[edit] Energy dissipation

[edit] Restitution

type float
default 0.100
min 0.000
Fractional value representing the ratio of speeds after and before an impact, taken along the line of the impact.

[edit] Friction

type float
default 0.200
min 0.000
Friction resists relative lateral motion of two solid surfaces in contact.

[edit] Linear damping

type float
default 0.000
DISABLED

[edit] Angular damping

type float
default 0.000
DISABLED

[edit] Fields

Displays fields that are connected to the simulator. Each field is displayed in its own check box allowing a user, on a per object basis, to toggle on and off the fields to apply to the current simulation.

Object properties fields.png

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