Solid Particle Parenting

[jerome]

Hi Folks,

Here's a SPS new feature : the particle parenting.

Simple to understand : once a particle has a parent, all its rotation, position and pivot are then expressed in the parent particle local space.

Simple to use :

sps.initParticles = function() {
    for (var i = 1; i < sps.nbParticles; i++) {
        // declare each previous particle as the parent of the current one
        sps.particles[i].parentId = i - 1;
    }
};

sps.updateParticle = function(p) {
    // each particle will rotate for +0.001 in the already rotated parent space
    particle.rotation.z += 0.001;
}

examples :

the green box is parented to the translating red one, it also rotates around a local pivot http://jerome.bousquie.fr/BJS/test/spsParenting.html

600 boxes, parented per groups (stems) of 10, each rotating around its pivot : http://jerome.bousquie.fr/BJS/test/spsParenting2.html

 

[Wingnut]

Excellent feature, Jerome!  Thank you!!!

[jerome]

you're welcome

[Guest]

AS always it rocks!

[jerome]

Some PG demo coming soon

Meanwhile, a little crowd of 300 guys walking around in one draw call : http://jerome.bousquie.fr/BJS/test/spsParenting3.html

[JohnK]

An adaptation of @jerome's demo above with elbows and knees https://tender-murdock-275855.netlify.com/

[jerome]

excellent !!!