three.js - Three js particle system with mouse interaction -


i try change behaviour particles example: http://threejs.org/examples/#webgl_particles_random

to more this: http://minimal.be/lab/flugl/

now when change fragment of code:

            ( = 0; < scene.children.length; ++ ) {                  var object = scene.children[ ];                  if ( object instanceof three.particlesystem ) {                      object.rotation.z = time * ( < 4 ? + 1 : - ( + 1 ) );                  }              }

into that:

            ( = 0; < scene.children.length; ++ ) {                  var object = scene.children[ ];                  if ( object instanceof three.particlesystem ) {                      object.position.x = mousex;                     object.position.y = -mousey;                 }             }

all particles move globally without change distance , velocity. change, present example. how modify code, avoid global changes in move particles? have change in shaders? or particle system in three.js enough create mouse attractor behaviour?


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