Orienting Sprites

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  10 October 2003
Orienting Sprites

I have a street, when the surface is live I will create some particles as sprites and apply some leaves to them

The thing is how can I go about so that the sprites [ leaves ] are lying on the ground at birth rather than standing up



I want the leaves to ly on the ground before I apply fields
 
  10 October 2003
quick and dirty?

I always assumed sprites were something that always faced the camera.... course, I'm probably mistaken.

In the meantime, you could always used instanced geometry, like taking the image and placing it on little lowres square planes. They will be able to lie down, flip around, etc. Plus, I'd assume it'd look more realistic when applying fields and collisions to it. You could even bend up the planes a bit to make leaves that don't look so flat.

Hope that helps.

- Jeremy
 
  10 October 2003
Maybe this tutorial is interesting for you, i havent tried to achieve the effect you are refering to, but i hope this will help.

:: Galactor ::
 
  10 October 2003
Quote: Originally posted by galactor
Maybe this tutorial is interesting for you, i havent tried to achieve the effect you are refering to, but i hope this will help.

:: Galactor ::


linky link
 
  10 October 2003
Re: quick and dirty?

Quote: Originally posted by verbal007
I always assumed sprites were something that always faced the camera.... course, I'm probably mistaken.




yes, they are


Quote: In the meantime, you could always used instanced geometry, like taking the image and placing it on little lowres square planes. They will be able to lie down, flip around, etc. Plus, I'd assume it'd look more realistic when applying fields and collisions to it. You could even bend up the planes a bit to make leaves that don't look so flat.

Hope that helps.

- Jeremy [/B]


good idea but i see some problems ... i was planning to use like five or more different leave images and randomly apply them to around a thousand particles

- i will have to have many particle objects - one for lying down leaves, one for crumpled and lying down leaves, and so on

- randomly applying a thousand planes in my city street

- randomly applying the shaders to the planes



it will just take more time to setup
 
  10 October 2003
no its exactly the same amount of time, all you have to do is add a rand function to the cycle index of the instancer and i am sure it pretty much just as quick.
 
  10 October 2003
Maybe this tutorial is something you're looking for:
http://www.learning-maya.com/t_leaves.php

Aydin
 
  10 October 2003
Quote: Originally posted by aydinu
Maybe this tutorial is something you're looking for:
http://www.learning-maya.com/t_leaves.php


Great tutorial! *bookmarked* But I think he mentioned 'fields' so he'll probably need something driven by dynamics.

- Jeremy
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  01 January 2006
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