Hi,

I'm new to pure data and am really confused about creating graphics.

I wondered if anyone could help me get started or create something for me?

I'm working on a large scale project which uses a 3d panner. I want to be able to place a sound within a 3d environment using a 3d gui.

I envision a wire box type shape which can contain several "blobs" or objects which represent sounds. These sounds can then be placed anywhere within this 3d environment. Perhaps with another object to represent the listener. When the "blobs" are moved, the coordinates will be extracted, to control panning and other parameters.

Anyone who can help me?

Cheers

Tony

hi preqwal, first thing you need to learn how gem works. open pd, go to help then browser then gem. you'll find all the informations you need to start.

then you'll probably need some more specific help. i can tell you that stuff like dragging 3d objects around the space is definitely possible but it's not an easy task for a beginner.

Thanks for the reply,

I've gone through the examples and am starting to get to grips with creating 3d shapes.

Problem is, I don't want a block cube, just the wire outline. Is this possible?

Am I right in thinking that gem supports the import of .obj? Meaning I could create the object in Blender or something?

Once I have that down, then creating a sphere will be fine, but I want it to be confined to within the box, so it can't move out of it, just floating inside it.

I'm fine with not being able to drag the shapes in the window for now, as I can just use the xyz coordinates, but that would be a nice extension.

if you want a wireframe view just send a [draw line( message to [cube]

Thanks for your help!

I know have a wire frame box with a small speher in it.

Using the limits in the number boxes I have confined the blob to the box and smooth the ingraments.

I'm using seperate X, Y and Z number boxes to move the sphere now, but how do I go the next level and actually drag the sphere around on the created Gem window?

Use gemmouse object to map mouse coords to XYZ value of object in patch. Searching in mailing list archives you will find some examples of that. Another quick option is use pdMTL library that comes with draggable rectangle and circles gem objects.

cheers
husk

maybe i'm wrong but i think that dragging stuff around in a 3d space is much harder than in a flat 2d surface. i guess you have to consider how to read the mouse coordinates according to the current view in order to get right values for x, y and z (ex. from the top-view «up» means moving on the y axis, from the front-view «up» means moving along the z axis). the quick and dirty way would be to just ignore z and handle that in a different way, maybe with right click or something like that.

That's what I was looking to do, set a particular rotation of the box as a standard and try and plot the coordinates of each corner according to that. Problem is, the box's sides aren't parallel, so I'm not sure about the field of depth.

Would it be easier to draw box externally, to make sure the sides are parallel, to import in?

On Second thought, I could use gem mouse to plot X and Y but have it according to the boxes rotation. I want to rotate the box so I can precisely place the sphere. Then use mouse click AND the mouse X and Y to move over the Z axis, relative to rotation too!

This may be harder than I want it to be

Hello preqwal, everybody:
Check in this forum on Sonsofsol's gem engine. It's awesome work. He wrote it towards 3D modeling (take a look to his youtube channel as well) I started writing something different, towards a 3D gui for audio, getting rid of pd normal interface, and finished up creating almost the same vectorial math! Well, we used a different navigation comands.
I am not at home these days, but as soon as I return, I tidy up and document a little more my code and post it as a work in progress for you to continue it, if you like.

Sumidero

Hi sumidero, that would be exellent!

I have pretty much spent 2 days assigning movement and middle mouse click to the rotational values of the box. I've got it so the box will stay put whilst mouse button is depressed, but when pressed I can drag the box around and it continues from where I left it.

I've started assigning left mouse click hold and mouse movement to a spheres position (which works), but I need this to take into account the boxes rotation and perspective to be effective.

@Sumidero: Very interested in your project, please keep us updated. Also thanks for the reference to Sonsofsol's work. Very helpful.

Hello preqwal, davephillips:

I've just posted my work in progress in this thread:

http://puredata.hurleur.com/viewtopic.php?pid=30164#p30164

I hope you find it useful.

Sumidero