motion in curve path

[ready]

I moved the center of last 2 solid that of the 1st solid, I forced each making solid "path curve" and have linked the movement of the 1st strong movement last 2 solid so that the movement of 1st solid path leads other solid trajectory.comment do the same so that other solids do not go out of the track in turn.

[Sarford]

Hi Ready,

The way to do this is quite simple. Lock all three cubes to the curve with a path constrain. Then put an expression on the Path %age of the second and third constrain.

The expression is actualy an equals expression minus the distance you want the cubes to be appart in Path %age.

"cube.kine.pathcns.perc" would have the cubes at the same position
"(cube.kine.pathcns.perc)-100" would have the cubes at opposite sides of the curve
"(cube.kine.pathcns.perc)-10" would have them 10% of the curve length appart.

Here is a picture to show it. In my example they are 3% of the curve length appart.

ps: Leave the center of the object in the center of the objects. You don't have to move them for this to work.

[ready]

thank you for your reply.
is the same method that I used to run my sound.
you used cubes for your animation test done with rectangular blocks as if you animate wagons of a locomotive. on a road right there are no problems, but in cornering the latest cars tend to derail or out of the trajectory.
I wonder if there is no way a means of distorting the latest cars so they can keep on track in the turns, style cartoon.
I thought the power lattice but I do not know how to apply it on a path as in Maya with "lattice flow path objet "

[ready]

what is the equivalent of Maya "lattice flow path object" in xsi ???