spring

Principle
aim        ang
eye
foc
image
roll      rota
vertex      vol
See also

Principle

Springs can be defined on some parameters of an object, eg between the vertices of a volume, which can simulate the elastic surfaces "soft", their torsion is controlled by angular springs between edges of these surfaces.
Dynamic animation (yes dynamic) their movements will be managed automatically by a dynamic model.
Two coefficients to adjust the reaction of the springs:
1) The stiffness (between 0 and 1)
        0: very soft
       1: Very steep
2) The viscosity (between 0 and -1)
        0: very fluid
        -1: highly viscous
Examples:
1) stiff=0.1, visc=-0.01: normal spring.
2) stiff=1, visc=-0.1: highly reactive.

spring foc

spring foc view(id)

        Returns the spting of the focal of the view id.

spring foc view(id)=stiff,visc

        Changes this spring.

spring aim

spring aim view(id)

        Returns the spring of the aim point of the viez id.

spring aim view(id)=stiff,visc

        Changes this spring.

spring image

spring image(id)

        Returns the stifness,viscosity coefficients of the dynamic image id.

spring image(id)=stiff,visc

        Changes these coefficients.
Note:
The image must of type dynamic and yes dynamic must be active. When the colors of some pixels change then come into vibration with a stiff stiffness and damping (viscosity) visc.

spring ang

spring ang vol(id)

        Returns the torsion coefficients of the volume id relative to its father.

spring ang vol(id)=stiff,visc

        Changes this spring.
Note:
Animation dynamic volume id undergo a torsional stiffness stiff and viscosity visc.

spring eye

spring eye view(id)

        Returns the spring of the eye of the view id.

spring eye view(id)=stiff,visc

        Changes this spring.

spring rota vol

spring rota vol(id)

        Returns the torsion coefficients of the volume id.

spring rota vol(id)=stiff,visc

        Changes these coefficients.
Note:
AIn dynamic animation volume id undergoes a torsional stiffness stiff and viscosity visc.

spring roll

spring roll view(id)

        Returns the spring of the roll of the view id.

spring roll view(id)=stiff,visc

        Changes this spring.

spring vertex vol

spring vertex(s) vol(id)

        Returns the coefficients of the spring attached to the vertex s of the volume id.

spring vertex(s)vol(id)=stiff,visc

        Changes these coefficients.
Notes:
1) Dynamic animation if the volume id has a mass or if its vertex s has a mass, its motion will be that of a spring of stiffness stiff viscosity visc.
2) If multiple vertices are equipped with a property spring, they interact automatically.
3) If a vertex has no property 'spring', it will be considered fixed.
4) See demo spring.
5) The stiffness is in the range of .01 to .2
6) The viscosity is of the order of at -0.00001 - .1
8) The mass is of the order of 0.1 to 1
See also: generate spring vertex vol.

spring vol

spring vol(id)

        Returns the spring property of the volume id.

spring vol(id)=stiff,visc


        Changes this property.
Notes:
1) Dynamic animation and the volume id has a masse or if the vertices have masses, its movement will be that of a network of springs stiffness stiff viscosity visc.
2) The stiffness is in the range of .01 to .2
3) The viscosity is of the order of at -0.00001 - .1
4) The mass is of the order of 0.1 to 1

See also:

field
force
generate spring vol
mass
meta spring
no dynamic
yes dynamic