請教Particle 的Instancer問題

[EIN]

請教Particle 的Instancer問題:

[EIN]

請問點先可以把d Particles指向中心 或 指向指定的方法 ?

[singsinghk]

1.create perParticleAttr directionPP (vector)

2.in creation & runtime expression add:
vector $particlePosition=particleShape1.worldPosition;
vector $origin=<<0,0,0>>;

particleShape1.directionPP=unit($origin-$particlePosition);

3.in Instancer(Geometry Replacement) parts
change AimDirertion => directionPP


*Please make sure the instancer object on +X axis direction.

[EIN]

做到了~多謝你!
感激!!!!

[stantang]

To add to singsinghk's answer, if you want to have the particles look at something (let's say locator1 here) instead of just the origin, you can do this:

1.create perParticleAttr lookAtMe (vector)

2.in runtime expression add:
particleShape1.lookAtMe= <<locator1.tx,locator1.ty,locator1.tz>>;

3.in Instancer(Geometry Replacement) parts
change AimPosition to lookAtMe

Feel free to change the object being aimed from locator1 to whatever you want.

[EIN]

THX!stantang~
又學到野!

想請教多個問題..像圖1,我用particle tool畫了幾粒粒子後,可否再修改每粒粒子的位置或再增加粒子數量(畫多幾粒)?

[stantang]

As far as I know, there is no way to edit the number of particles in a single particle shape that's created by particle tool, but you can edit the position of the particle by using the follow MEL.

particle -e -at position -id 2 -vectorValue 0 0 0;

Change the id number to the id of the particle you want to edit, the vectorValue is where you want to put it.

To be honest, it would be much easier to recreate the particles if you have to edit the particle positions.

[stantang]

Forgot to mention, you can also use component editor to edit the positions, but redoing the particle would still be easier when you have a lot.

[EIN]

多謝你的解答~