Re: emitt grid on surface

[Simon van de Lagemaat]

Maybe I need to break this problem down a little.

1.  I need to know how to build a 2d particle grid in the first place... if
there's a simple tut out there I'd love to do it.

2.  Determine how to center and then align the grid to a surface .  I'm
already doing this with a raycast method for the Y alignment but I'm having
to manually center and size the 3d grid to the surfaces bounding box using
it's own built in controls... it's a pita when you have a lot of fields.

I'm a smart guy, I should be able to do this if I can just get access to
the proper tutorials or advice :-)  It's fun regardless, I enjoy putting
all the pieces together as I build them.

FYI, basically I'm making corn rows in a field and I'm being passed geo for
each field.  I need to emit and rotate a grid on it as a base for
instancing.  Everything else I can do easily, i.e. all the usual scattering
stuff, randomization of everything really.


On Tue, Mar 18, 2014 at 3:51 PM, Matt Morris  wrote:

> Should be able to get locations on the surface via the raycast and create
> the points needed from them, rather than building all of them and deleting
> those not intersecting?
>
>
>
>
> On 18 March 2014 22:39, Jason S  wrote:
>
>>  Actually refreshing to see a bit of "normal" content =)
>>
>>
>> On 03/18/14 17:28, Simon van de Lagemaat wrote:
>>
>> There's nothing the matter with it.  Right now I'm just aligning the
>> points to the surface and deleting the points that are not hitting the
>> surface.  In fact it's working a little better than I thought it would.
>>
>>
>> On Tue, Mar 18, 2014 at 2:09 PM, olivier jeannel > > wrote:
>>
>>> In order to better help (It's so noisy these days) Can you post a screen
>>> grab of what you want ? What's the matter with deleting particles ?
>>>
>>>
>>> Le 18/03/2014 20:06, Simon van de Lagemaat a écrit :
>>>
>>>  Hey guys,

 I'm trying to do something simple, just emitting a flat grid on a
 uneven surface that can have it's heading changed.  Currently I'm just
 creating a grid in a point cloud and raycasting it down on to my surface
 but I'm having to kill off the particles outside the surface which is a
 pita.

 Is there a simple way to emit a rotatable grid from the surface
 directly rather than raycasting?  Even being able to kill off the particles
 that aren't raycasting on to the surface would suffice.

>>>
>>>
>>
>>
>
>
> --
> www.matinai.com
>

Re: emitt grid on surface

[Matt Morris]

Should be able to get locations on the surface via the raycast and create
the points needed from them, rather than building all of them and deleting
those not intersecting?




On 18 March 2014 22:39, Jason S  wrote:

>  Actually refreshing to see a bit of "normal" content =)
>
>
> On 03/18/14 17:28, Simon van de Lagemaat wrote:
>
> There's nothing the matter with it.  Right now I'm just aligning the
> points to the surface and deleting the points that are not hitting the
> surface.  In fact it's working a little better than I thought it would.
>
>
> On Tue, Mar 18, 2014 at 2:09 PM, olivier jeannel 
> wrote:
>
>> In order to better help (It's so noisy these days) Can you post a screen
>> grab of what you want ? What's the matter with deleting particles ?
>>
>>
>> Le 18/03/2014 20:06, Simon van de Lagemaat a écrit :
>>
>>  Hey guys,
>>>
>>> I'm trying to do something simple, just emitting a flat grid on a uneven
>>> surface that can have it's heading changed.  Currently I'm just creating a
>>> grid in a point cloud and raycasting it down on to my surface but I'm
>>> having to kill off the particles outside the surface which is a pita.
>>>
>>> Is there a simple way to emit a rotatable grid from the surface directly
>>> rather than raycasting?  Even being able to kill off the particles that
>>> aren't raycasting on to the surface would suffice.
>>>
>>
>>
>
>


-- 
www.matinai.com

Re: emitt grid on surface

[Jason S]

Actually refreshing to see a bit of "normal" content =)

On 03/18/14 17:28, Simon van de Lagemaat wrote:

  There's nothing the matter with it.  Right now I'm
just aligning the points to the surface and deleting the points that
are not hitting the surface.  In fact it's working a little better than
I thought it would.
  
  
  On Tue, Mar 18, 2014 at 2:09 PM, olivier
jeannel 
wrote:
  In
order to better help (It's so noisy these days) Can you post a screen
grab of what you want ? What's the matter with deleting particles ?


Le 18/03/2014 20:06, Simon van de Lagemaat a écrit :



Hey guys,
  
I'm trying to do something simple, just emitting a flat grid on a
uneven surface that can have it's heading changed.  Currently I'm just
creating a grid in a point cloud and raycasting it down on to my
surface but I'm having to kill off the particles outside the surface
which is a pita.
  
Is there a simple way to emit a rotatable grid from the surface
directly rather than raycasting?  Even being able to kill off the
particles that aren't raycasting on to the surface would suffice.




  
  
  
  

Re: emitt grid on surface

[Simon van de Lagemaat]

There's nothing the matter with it.  Right now I'm just aligning the points
to the surface and deleting the points that are not hitting the surface.
 In fact it's working a little better than I thought it would.


On Tue, Mar 18, 2014 at 2:09 PM, olivier jeannel wrote:

> In order to better help (It's so noisy these days) Can you post a screen
> grab of what you want ? What's the matter with deleting particles ?
>
>
> Le 18/03/2014 20:06, Simon van de Lagemaat a écrit :
>
>  Hey guys,
>>
>> I'm trying to do something simple, just emitting a flat grid on a uneven
>> surface that can have it's heading changed.  Currently I'm just creating a
>> grid in a point cloud and raycasting it down on to my surface but I'm
>> having to kill off the particles outside the surface which is a pita.
>>
>> Is there a simple way to emit a rotatable grid from the surface directly
>> rather than raycasting?  Even being able to kill off the particles that
>> aren't raycasting on to the surface would suffice.
>>
>
>

Re: emitt grid on surface

[Cristobal Infante]

Instead of emitting from the grid, could you not create a weightmap on the
uneven surface based on your grids raycast?

Then emit directly on the uneven surface with a filter by weightmap..

I think.

On Tuesday, 18 March 2014, olivier jeannel  wrote:

> In order to better help (It's so noisy these days) Can you post a screen
> grab of what you want ? What's the matter with deleting particles ?
>
>
> Le 18/03/2014 20:06, Simon van de Lagemaat a écrit :
>
>> Hey guys,
>>
>> I'm trying to do something simple, just emitting a flat grid on a uneven
>> surface that can have it's heading changed.  Currently I'm just creating a
>> grid in a point cloud and raycasting it down on to my surface but I'm
>> having to kill off the particles outside the surface which is a pita.
>>
>> Is there a simple way to emit a rotatable grid from the surface directly
>> rather than raycasting?  Even being able to kill off the particles that
>> aren't raycasting on to the surface would suffice.
>>
>
>

Re: emitt grid on surface

[olivier jeannel]

In order to better help (It's so noisy these days) Can you post a screen 
grab of what you want ? What's the matter with deleting particles ?



Le 18/03/2014 20:06, Simon van de Lagemaat a écrit :

Hey guys,

I'm trying to do something simple, just emitting a flat grid on a 
uneven surface that can have it's heading changed.  Currently I'm just 
creating a grid in a point cloud and raycasting it down on to my 
surface but I'm having to kill off the particles outside the surface 
which is a pita.


Is there a simple way to emit a rotatable grid from the surface 
directly rather than raycasting?  Even being able to kill off the 
particles that aren't raycasting on to the surface would suffice.

emitt grid on surface

[Simon van de Lagemaat]

Hey guys,

I'm trying to do something simple, just emitting a flat grid on a uneven
surface that can have it's heading changed.  Currently I'm just creating a
grid in a point cloud and raycasting it down on to my surface but I'm
having to kill off the particles outside the surface which is a pita.

Is there a simple way to emit a rotatable grid from the surface directly
rather than raycasting?  Even being able to kill off the particles that
aren't raycasting on to the surface would suffice.