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Using Particle Engine For Arrows

Posted: Fri, 19th Jan 2007, 8:35pm

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DavidLittlefield

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I was fooling around with the particle engine and decided to try a picture of an arrow. My results were actually pretty satisfying. I made the emitter a rectangle, lowered the particle max pretty low(depending on your shot, i put mine at around 20), and the particle rate low (I used 10) and the lifetime as long as you need it. On the opactiy/color bar I took of the black "Opacity" tab so it's solid the whole time. It didnt look bad because they kind of fanned out. It probably wouldn't work if you showed the emitter, but it could come in handy for any LOTR fan-film.
Posted: Fri, 19th Jan 2007, 9:15pm

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Pyromarius

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Why don't you make a preset of it that you can upload to the website?

Pyromarius
Posted: Fri, 19th Jan 2007, 9:53pm

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DavidLittlefield

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I'll have to work on it a bit more. But I'll definitly look into it.
Posted: Fri, 19th Jan 2007, 11:33pm

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Axeman

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The tricky part there is that you cannot rotate the texture, so there can be no arc to the path of the arrow.
Posted: Sat, 20th Jan 2007, 2:48pm

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jotoki

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yeah i wondered about the trajectory when i saw this thread. I haven;t spent much time with the particle engine, is it possible to change the texture with time ? if so you might be able to create multiple textures with differning rotations of course this may not be possible at all I dont know.
Posted: Sat, 20th Jan 2007, 5:32pm

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Axeman

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Yes, you can create animated textures, up to 50 frames long I think. So you could use a sequence of images of a gradually turning arrow to simulate the trajectory arc, but you would have to time the motion of the arc with the path of the particles just right; seems like it would be a bit tricky. Clever idea though, it would totally be possible.
Posted: Sat, 20th Jan 2007, 9:11pm

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jotoki

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yay 6 years on here and finally i have a clever idea. My work here is done lol But tricky, oh for sure it would be yes.
Posted: Mon, 22nd Jan 2007, 3:07am

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DavidLittlefield

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Ahem. I'd just like to say that I am the one that origionally posted the thread (But I'll alow you to bask in a little glory jotoki). But anyways, for a quick shot it's really not that noticable that the arrows aren't "arc-ing" over the sky. Since the arrows are actually fanning out it gives the illusion that they're changing. I haven't tried this idea, but perhaps if you put a few different pictures of arrows, some more tilted than others, it may look more realisitic.
Posted: Mon, 22nd Jan 2007, 8:57am

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jotoki

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I wasnt claiming glory for using the particle system for arrows only for giving axeman a solution to the trajectory issue he had pointed out. For a quick shot sure it would work as you said and if done right very well I expect, Axeman and I were just talking about the possibility of a longer shot showing the arc of the arrow over time which would require some kind of trajectory change. Just kind of expanding you your idea. best idea might be to cut between shots of the arrows and the people on the ground allowing each arrow shot to have a differing trajectory so removing the need to animate textures. There are a few ways to pull this off, it just depends what you're looking for.
Posted: Thu, 25th Jan 2007, 7:27pm

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DavidLittlefield

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I put up another thread in General Chat that has a link to a video that has the arrows using the particle engine in it.
Posted: Thu, 25th Jan 2007, 8:18pm

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shadu

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Check my WEB site for our movie "still hunted" during the combat scene i used some flaming arrow made in particule illusion.


www.imaginethisproductions.net

Shadu
Posted: Mon, 29th Jan 2007, 8:41pm

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Mandalorian

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That would be cool if the texture rotation was part of the next update for the particle engine, it would definitely make sparks easier to make, since they have a bit of an "arc" to them as well.
Posted: Mon, 29th Jan 2007, 9:18pm

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Lithium Kraft

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I agree. Particle rotation would be the greatest thing since the amazing speed update.