jit.phys.conetwist
Description
jit.phys.conetwist is a special point-to-point constraint that restricts the translation and allows limits on the rotation. The x-axis serves as a twist axis. This can be useful to represent limbs of a body, such as arms and legs. Motor forces can be applied to the constraint. If only a single body is bound, it is constrained to a point in world space.
Examples

Attributes
bias [float]
Magnitude of the limit's position correction (default = 0.3). This attribute sets how strictly the position error is corrected. For most cases, the value should not be greater than 1.
body1 [symbol]
The name of the first jit.phys.body to constrain.
body2 [symbol]
The name of the second jit.phys.body to constrain.
collisions [int]
Enables collisions between attached bodies (default = 0).
enable [int]
Enable this constraint in the physics simulation (default = 1).
position1 [3 floats]
The pivot point of body1 as a 3D vector relative to the body1 center of mass (default = 0 0 0).
position2 [3 floats]
The pivot point of body2 as a 3D vector relative to the body2 center of mass (default = 0 0 0). If body2 is blank, this is the worldspace position of the constraint.
quat1 [4 floats]
The quaternion orientation of body1 relative to the constraint (default = 0 0 0 1).
quat2 [4 floats]
The quaternion orientation of body2 relative to the constraint (default = 0 0 0 1). If body2 is blank, this is the worldspace orientation of the constraint.
relaxation [float]
The rate at which velocity errors are corrected by limits, effectively the strength of the limits (default = 1.0) . Lower values specify weaker limits. For most cases, the relaxation value should not be greater than 1.
rotate1 [4 floats]
Rotation of body1 relative to the constraint (default = 0 0 0 1).
rotate2 [4 floats]
Rotation of body2 relative to the constraint (default = 0 0 0 1). If body2 is blank, this is the worldspace orientation of the constraint.
rotatexyz1 [3 floats]
Euler rotation of body1 relative to the constraint (default = 0 0 0).
rotatexyz2 [3 floats]
Euler rotation of body2 relative to the constraint (default = 0 0 0). If body2 is blank, this is the worldspace orientation of the constraint.
strength [float]
Set the constraint strength (default = 0.2). Determines what proportion of the joint error will be fixed each simulation step. Values between 0.1 and 0.8 are recommended.
stretch [float]
Set the constraint stretch (default = 0.0). Setting to a positive value allows forces acting on rigid bodies to violate the constraint by an amount proportional to the stretch value.
swing1limit [float]
The limit of allowed rotation in degrees in either direction around the swing 1 axis (default = 180). With a limit of 180 degrees, rotation is unconstrainted around the axis.
swing2limit [float]
The limit of allowed rotation in degrees in either direction around the swing 2 axis (default = 180). With a limit of 180 degrees, rotation is unconstrainted around the axis.
twistlimit [float]
The limit, in degrees, of allowed rotation in degrees in either direction around the twist axis (default = 180). With a limit of 180 degrees, rotation is unconstrainted around the axis.
worldname [symbol]
The name of a jit.phys.world context this constraint is bound to.
worldpos [3 floats]
The derived constraint world position (default = 0 0 0)
worldquat [4 floats]
The derived constraint world quaternion (default = 0 0 0 1)
Common Box Attributes
Messages
reset
See Also
Name | Description |
---|---|
Working with OpenGL | Working with OpenGL |
jit.phys.world | |
jit.phys.body | |
jit.phys.barslide | |
jit.phys.hinge | |
jit.phys.point2point | |
jit.phys.6dof |