# Thinking Particles

#1581

Hi, I know its a pretty noob question, but Im trying to do something.

Im putting particles (drops) over the surface of a fruit, and i need to offset the position of the particles over the normal of the surface, just to separate both meshes a bit.

How can I do that?

thanks

#1582

Take the normal, multiply it by something and add it to the position, use the result as new position.

#1583

Thanks hristo

#1584

Another question Im trying to make a spiderweb, create the lines between particles and that sort of thing, but Im stuck on the most basic part, the jointing of particles, I want those particles to being jointed to those on the poles, but I cant get it, any clue of what is my mistake? thanks

#1585

Opps, posted in TP forum instead of Krakatoa ha haā¦

#1586

Hey Guys I am back,

Have been really busy trying to teach myself mathematics, and am still at the moment and shall be for the foreseeable future.

But apart from that I have continued fiddling with RBD in Thinking Particles. This time with a small little test. I do however have one question, I have prefractured this small piece of Geometry and want to know if there is a way to activate the fragments when there is no longer my physical support left for them.

For example, if the base of a pillar blew out then the pieces above them will start too fall. Should I just activate them using the TimeInterval condition? Or is there a way for the pieces to realize there is no longer any support?

In my exampe below everything is in the active group at the same time and therefore you see some movement and compression before the supporting pieces actually blow away.

Sorry if this post is confusing

Video

#1587

Hello everybody,

does anybody know how to improve the collisions between ropes and other geometry like mentioned before by shadowst17. I donāt get any kind of accurancy!

#1588

What I sometimes do instead is to emit a particle from something that gets blown out, shoot that particle up and activate whatever it meets on its way.

#1589

Hi everybody!

I need to generate some kind of HUD effect in 3D. Some kid of Holographic TAG over a characterā¦

I need the TAG to be constant in size whatever the distance. Anyone can help me??? Is there any Math for that?

In addition, the TAG should be visually at a constant distance of his parentā¦

Thank you!!

#1590

hy guys. I am stuck in place. I need particles inbetween of those boxes. those yellow boxes are also particles generated on path. any help would be appreciable. and need alignment too.

#1591

Oh cool I could try that! I think I shall play around with that idea now and see what comes of it :).

Thanks again mate!

#1592

Hi guys, Iām a new TP user, I love the rule-based concept behind it and itās extremely flexible and of course full procedural .There are a tons of resources on the web but I canāt solve my problem. I want that my particles of group 2 are aligned/born on the surface of my particles on the group 1(that has a simple position born with shapeInstance) and so on. I want like a fractal system where particles grow on surface of previous particlesā¦like a treeās branches. Any advice how can solve this? Thanks in advance

#1593

hi there,

the StdShape or geomInstance nodes provide an input for vertex color, but is there any way to control the vertex color of custom particles like fragments or object2particlesā¦?

cheers
felix

#1594

Unfortunately no

#1595

What is the preferred method for the dealing with point cached objects in TP? I have a cached piece of geo that I read in like thisā¦ Born a particle, give it a position. Then take that group and in a new dynamic set, create a GeomInstance node and read in the animated geo I want to reference. The shape comes across fine, but I donāt see any animation. Any ideas on why this might be happening?

#1596

try putting the particle age in the ātimeā input of the geo instance

#1597

Hi guys,

I want my destruction to start in different places and I want to control it by some animated helper objects. I know how to activate particles by distane from one node, but what if I want to use 10 nodes instead?

Copy/paste the whole dynamic system for every each node does not make sense. Can I group my āactivation nodesā to some one node? And then use this group to activate by distance?

#1598

Either put the nodes in a particle group with object2particle, or put them in an āobjectsā node (TP5 and higher) and use its node output with index input to get a specific node. And another option would be to use a XtoOne node where you connect all the nodes to the input, and choose which one is routed to the output with the index of the XtoOne.

#1599

Siā¦ I can build matrix from position and alignment and do some matrix calculation with Math node.

But, How can I apply result to particles?

#1600

hey, urgent question,

it seems that tp doesnt render vray material property,

what im using is a vray material with some refratction, and there iāve set under refraction properties, affect channels: all channels,

and on normal object it renders correctly, on any object imported into tp seems this function is off,

is there a way to work around it? exept exporting everything?