Paul Riker

I've been doing some work with jit.gl.gridshape using matrix input. I'm rendering multiple 3d spheres at once. It is quite easy (thanks to much help and a nice demo by Andrew) to manipulate many aspects of each of these spheres independently (e.g. scale, position, etc.), but I'm pretty sure that any color changes will be applied to all objects of a given jit.gl.gridshape.

I'm just wondering if anyone knows of a way to manipulate color independently under these circumstances. Here is a more clear breakdown:

Using various messaging combined with jit.poke, I feed a matrix (jit.matrix name 4 float32 32) with changing data, which is then fed into jit.gl.gridshape as various parameters. This gives me independent contol over many aspects of 32 GL spheres. The only problem is...any color messages apply to all 32 spheres.

Can anybody spot a workaround? Right now I just have to use a different jit.gl.grishape for each color.

I've been doing some work with jit.gl.gridshape using matrix input.  I'm rendering multiple 3d spheres at once.  It is quite easy (thanks to much help and a nice demo by Andrew) to manipulate many aspects of each of these spheres independently (e.g. scale, position, etc.), but I'm pretty sure that any color changes will be applied to all objects of a given jit.gl.gridshape.

I'm just wondering if anyone knows of a way to manipulate color independently under these circumstances.  Here is a more clear breakdown:

Using various messaging combined with jit.poke, I feed a matrix (jit.matrix name 4 float32 32) with changing data, which is then fed into jit.gl.gridshape as various parameters.  This gives me independent contol over many aspects of 32 GL spheres.  The only problem is...any color messages apply to all 32 spheres.

Can anybody spot a workaround?  Right now I just have to use a different jit.gl.grishape for each color.

jit-gl-gridshape-independent-colors-per-object

If you are using one jit.gl.gridshape object to draw multiple times 

with automatic=0, you can set the color differently for each sphere 

> I've been doing some work with jit.gl.gridshape using matrix 

> input. I'm rendering multiple 3d spheres at once. It is quite 

> easy (thanks to much help and a nice demo by Andrew) to manipulate 

> many aspects of each of these spheres independently (e.g. scale, 

> position, etc.), but I'm pretty sure that any color changes will be 

> applied to all objects of a given jit.gl.gridshape.

> I'm just wondering if anyone knows of a way to manipulate color 

> independently under these circumstances. Here is a more clear 

> Using various messaging combined with jit.poke, I feed a matrix 

> (jit.matrix name 4 float32 32) with changing data, which is then 

> fed into jit.gl.gridshape as various parameters. This gives me 

> independent contol over many aspects of 32 GL spheres. The only 

> problem is...any color messages apply to all 32 spheres.

> Can anybody spot a workaround? Right now I just have to use a 

> different jit.gl.grishape for each color.

If you are using one jit.gl.gridshape object to draw multiple times  
with automatic=0, you can set the color differently for each sphere  
just like any other parameter.

>
> Hello:
>
> I've been doing some work with jit.gl.gridshape using matrix  
> input.  I'm rendering multiple 3d spheres at once.  It is quite  
> easy (thanks to much help and a nice demo by Andrew) to manipulate  
> many aspects of each of these spheres independently (e.g. scale,  
> position, etc.), but I'm pretty sure that any color changes will be  
> applied to all objects of a given jit.gl.gridshape.
>
> I'm just wondering if anyone knows of a way to manipulate color  
> independently under these circumstances.  Here is a more clear  
> breakdown:
>
> Using various messaging combined with jit.poke, I feed a matrix  
> (jit.matrix name 4 float32 32) with changing data, which is then  
> fed into jit.gl.gridshape as various parameters.  This gives me  
> independent contol over many aspects of 32 GL spheres.  The only  
> problem is...any color messages apply to all 32 spheres.
>
> Can anybody spot a workaround?  Right now I just have to use a  
> different jit.gl.grishape for each color.
>
> Thanks in advance,
>
> Paul
>


You can change the color - you'll have to set "@automatic 0" and send 

a bang after sending the parameters for drawing each sphere, like 

"scale 1. 1. 1., color 2. 2. 2. 2., bang, scale 1. 1. 1., color 2. 2. 

You can change the color - you'll have to set "@automatic 0" and send  
a bang after sending the parameters for drawing each sphere, like  
"scale 1. 1. 1., color 2. 2. 2. 2., bang, scale 1. 1. 1., color 2. 2.  
2. 2., bang"

>
> Hello:
>
> I've been doing some work with jit.gl.gridshape using matrix  
> input.  I'm rendering multiple 3d spheres at once.  It is quite  
> easy (thanks to much help and a nice demo by Andrew) to manipulate  
> many aspects of each of these spheres independently (e.g. scale,  
> position, etc.), but I'm pretty sure that any color changes will be  
> applied to all objects of a given jit.gl.gridshape.
>
> I'm just wondering if anyone knows of a way to manipulate color  
> independently under these circumstances.  Here is a more clear  
> breakdown:
>
> Using various messaging combined with jit.poke, I feed a matrix  
> (jit.matrix name 4 float32 32) with changing data, which is then  
> fed into jit.gl.gridshape as various parameters.  This gives me  
> independent contol over many aspects of 32 GL spheres.  The only  
> problem is...any color messages apply to all 32 spheres.
>
> Can anybody spot a workaround?  Right now I just have to use a  
> different jit.gl.grishape for each color.
>
> Thanks in advance,
>
> Paul


Can you post your patch? Your message is quite confisuing as

jit.gl.gridshape doesn't take a matrix input, so I'm not quite sure

what you're talking about. You can in fact render multiple gridshapes

using one object with different colors with messages. Just set it to

@automatic 0 and set all the parameters you want to change and then

send a draw message. Repeat for each bang to jit.gl.render for

however many distinct gridshapes you want to appear.

Alternatively if you're on OSX and want to use matrices with

jit.poke~, you can download the new UB beta and use the

jit.gl.multiple object to render many gridshapes at once with varying

values for things like position, scale, color, texture, etc.

> I've been doing some work with jit.gl.gridshape using matrix input. I'm rendering multiple 3d spheres at once. It is quite easy (thanks to much help and a nice demo by Andrew) to manipulate many aspects of each of these spheres independently (e.g. scale, position, etc.), but I'm pretty sure that any color changes will be applied to all objects of a given jit.gl.gridshape.

> I'm just wondering if anyone knows of a way to manipulate color independently under these circumstances. Here is a more clear breakdown:

> Using various messaging combined with jit.poke, I feed a matrix (jit.matrix name 4 float32 32) with changing data, which is then fed into jit.gl.gridshape as various parameters. This gives me independent contol over many aspects of 32 GL spheres. The only problem is...any color messages apply to all 32 spheres.

> Can anybody spot a workaround? Right now I just have to use a different jit.gl.grishape for each color.

Hi Paul,
Can you post your patch?  Your message is quite confisuing as
jit.gl.gridshape doesn't take a matrix input, so I'm not quite sure
what you're talking about.  You can in fact render multiple gridshapes
using one object with different colors with messages.  Just set it to
@automatic 0 and set all the parameters you want to change and then
send a draw message.  Repeat for each bang to jit.gl.render for
however many distinct gridshapes you want to appear.

Alternatively if you're on OSX and want to use matrices with
jit.poke~, you can download the new UB beta and use the
jit.gl.multiple object to render many gridshapes at once with varying
values for things like position, scale, color, texture, etc.

On 6/27/06, Paul  wrote:
>
> Hello:
>
> I've been doing some work with jit.gl.gridshape using matrix input.  I'm rendering multiple 3d spheres at once.  It is quite easy (thanks to much help and a nice demo by Andrew) to manipulate many aspects of each of these spheres independently (e.g. scale, position, etc.), but I'm pretty sure that any color changes will be applied to all objects of a given jit.gl.gridshape.
>
> I'm just wondering if anyone knows of a way to manipulate color independently under these circumstances.  Here is a more clear breakdown:
>
> Using various messaging combined with jit.poke, I feed a matrix (jit.matrix name 4 float32 32) with changing data, which is then fed into jit.gl.gridshape as various parameters.  This gives me independent contol over many aspects of 32 GL spheres.  The only problem is...any color messages apply to all 32 spheres.
>
> Can anybody spot a workaround?  Right now I just have to use a different jit.gl.grishape for each color.
>
> Thanks in advance,
>
> Paul
>


The spheres are only a small part of a large and very messy patch (my first Max/MSP/Jitter project). I couldn't ask you to sort it out. However unclear my description was, you've managed to answer expertly. Thank you very much. My problem seems to have been with the message/bang ordering. I was getting weird constant flickering when I would change colors. I'll implement your advice and see what happens.

Also, as you say, I mispoke when I called it "matrix input." I should have said that I was using a matrix to supply parameters for jit.gl.gridshape. Here is a breakdown of the flow:

*multiple jit.poke objects-----> Matrix with 4 dimensions(x,y,z,scale)-----> jit.iter-----> messages (like position $1 $2 $3 and scale $4 $4 $4-------> jit.gl.gridshape)

Sorry about that. Thanks for the help. If I have further questions, I'll be sure to prepare a smaller patch that demonstrates the issue at hand.

The spheres are only a small part of a large and very messy patch (my first Max/MSP/Jitter project).  I couldn't ask you to sort it out.  However unclear my description was, you've managed to answer expertly.  Thank you very much.  My problem seems to have been with the message/bang ordering.  I was getting weird constant flickering when I would change colors.  I'll implement your advice and see what happens.

Also, as you say, I mispoke when I called it "matrix input."  I should have said that I was using a matrix to supply parameters for jit.gl.gridshape.  Here is a breakdown of the flow:   

*multiple jit.poke objects-----> Matrix with 4 dimensions(x,y,z,scale)-----> jit.iter-----> messages (like position $1 $2 $3 and scale $4 $4 $4-------> jit.gl.gridshape)  

Sorry about that.  Thanks for the help.  If I have further questions, I'll be sure to prepare a smaller patch that demonstrates the issue at hand.

jit.gl.gridshape - independent colors per object?