You are viewing an archive of the old fxhome.com forums. The community has since moved to hitfilm.com.

Making a line of particles thinner at the back

Posted: Tue, 19th Jul 2011, 2:09am

Post 1 of 7

Azulon'sAssassin

Force: 1108 | Joined: 26th Oct 2010 | Posts: 648

VisionLab User Windows User

Gold Member

How could I make a moving line of particles (like a fireball that moves across the screen) to be thinner in the back than the front? Something like this:

http://www.google.com/imgres?imgurl=http://www.hotspotsz.com/newsimages1/fireball.jpg&imgrefurl=http://www.hotspotsz.com/Mystery_fireball_streaks_across_sky_(Article-18261).html&usg=__i-MJmW8sE2XJ22GRqj1D4nq7J5o=&h=135&w=192&sz=5&hl=en&start=42&zoom=1&tbnid=7xT3J_qsNezWcM:&tbnh=108&tbnw=153&ei=pOYkTvf6JLCx0AHm-qjHCg&prev=/search%3Fq%3Dmoving%2Bfireball%26hl%3Den%26biw%3D1280%26bih%3D827%26gbv%3D2%26tbm%3Disch&itbs=1&iact=rc&dur=312&page=3&ndsp=20&ved=1t:429,r:1,s:42&tx=110&ty=82

Also, how could I get an effect like this:

http://www.google.com/imgres?imgurl=http://images.wikia.com/avatar/images/7/7d/Azula_Earth_King.png&imgrefurl=http://avatar.wikia.com/wiki/The_Crossroads_of_Destiny&usg=__qUYMfO8o7QMF1Dq_n4aNKBn04tA=&h=250&w=333&sz=192&hl=en&start=104&zoom=1&tbnid=Zy6Xl_S89ujz7M:&tbnh=155&tbnw=184&ei=_-YkTuK9FKO20AG85bj1Cg&prev=/search%3Fq%3Dcrazy%2Bazula%2Bfire%2Bblast%26um%3D1%26hl%3Den%26sa%3DX%26rlz%3D1R2DKUS_enUS405%26biw%3D1280%26bih%3D827%26tbm%3Disch&um=1&itbs=1&iact=hc&vpx=872&vpy=488&dur=1312&hovh=194&hovw=259&tx=187&ty=145&page=6&ndsp=21&ved=1t:429,r:4,s:104&biw=1280&bih=827

I was thinking of using a muzzle flash fro that one.

Also, how could I get a flame that comes up from a point and is sort of 'puffy and cloudy?"
Posted: Wed, 27th Jul 2011, 2:54pm

Post 2 of 7

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

To get a tapered tail like that, you'll probably need to use multiple emitters stacked on top of each other, including a long skinny one for the center of the tail, and then some getting gradually shorter and fatter to make up the ball at the front.

I've no idea what that second effect is supposed to look like in motion, but you could definitely get that general shape with a muzzle flash, or with a freehand neon light.

I've no idea what you mean when you mention a puffy and cloudy flame. Link or example please?
Posted: Thu, 28th Jul 2011, 2:28am

Post 3 of 7

Azulon'sAssassin

Force: 1108 | Joined: 26th Oct 2010 | Posts: 648

VisionLab User Windows User

Gold Member

Well, the second effect forst of pulses, and forget the puffy fire. Also, could I not just set the lifetime down? I thought that could work.
Posted: Thu, 28th Jul 2011, 4:23am

Post 4 of 7

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

I just realized that you can pretty easily use the Size gradient to make the tail taper out. I totally spaced that before.
Posted: Thu, 28th Jul 2011, 11:33pm

Post 5 of 7

Azulon'sAssassin

Force: 1108 | Joined: 26th Oct 2010 | Posts: 648

VisionLab User Windows User

Gold Member

Oh, so just pull that little "bar" down at the end?
Posted: Fri, 29th Jul 2011, 2:11pm

Post 6 of 7

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

right, if the left end of the bar is higher than the right end, then the size will decrease over time.
Posted: Sat, 30th Jul 2011, 12:08am

Post 7 of 7

Azulon'sAssassin

Force: 1108 | Joined: 26th Oct 2010 | Posts: 648

VisionLab User Windows User

Gold Member

Thanks.