geddy

In short, I am looking to face between two coordinate drawn images e.g. square and a triangle without using jit.gl.gridshape. How do I do this?

I have drawn a shape by individually drawing lines (e.g. reset, glcolor 0 1 0 1, glbegin polygon, glvertex -0.2 0.2 0.2, glvertex -0.2 0.2 -0.2, glvertex 0.40.2 -0.2, glvertex 0.4 0.2 0.2, glend), and then I send this message box to jit.gl.sketch. I have seen an example of using jit.xfade to fade between jit.gl.gridshape but as I am not using jit.gl.gridshape to create my images, how can I complete my goal?

I have been playing around but can not appear to find any good answer.

using-jit-xfade-to-fade-between-two-different-coordinate-drawn-images

jit.gl.sketch @matrix output 1 ?
Both outlets to jit.xfade.


Try this on for size. While you can't output a matrix from jit.gl.sketch, you might be able to do it differently, depending on your needs of course, using jit.gl.mesh and matrices. 

I have had a play with the example you have given which is quite interesting. I am wanting to draw a cube, and colour each side individually which is possible in jit.gl.sketch with the 'glcolor 1 1 1 1' mode. How do I go about doing this here. Is it completely limited?

It allows me to fade which is excellent, but removes detailed control? Am I correct?

After thinking about this for a while I've been thinking that your vertex data is mixed up with the instructions for sketch.

e.g. reset, glcolor 0 1 0 1, glbegin polygon, glvertex -0.2 0.2 0.2, glvertex -0.2 0.2 -0.2, glvertex 0.40.2 -0.2, glvertex 0.4 0.2 0.2, glend

-0.2 0.2 0.2 , -0.2 0.2 -0.2, 0.40.2 -0.2, 0.4 0.2 0.2

This list of numbers can be interpolated with the other list from your other shape.(check forums for list interpolation or the algorithm for Xafde)

The only problem you have is how to prepend and append the information after the lists have been interpolated.

After thinking about this for a while I've been thinking that your vertex data is mixed up with the instructions for sketch.
so:
e.g. reset, glcolor 0 1 0 1, glbegin polygon, glvertex -0.2 0.2 0.2, glvertex -0.2 0.2 -0.2, glvertex 0.40.2 -0.2, glvertex 0.4 0.2 0.2, glend
becomes,
 -0.2 0.2 0.2 ,  -0.2 0.2 -0.2,  0.40.2 -0.2,  0.4 0.2 0.2
This list of numbers can be interpolated with the other list from your other shape.(check forums for list interpolation or the algorithm for Xafde)
The only problem you have is how to prepend and append the information after the lists have been interpolated.


The control you have is indeed different from the jit.gl.sketch commands, but jit.gl.mesh does have a texture coordinates inlet and a color inlet (amonst others) which allow you a lot of control depending on what you want.

But you could also interpolate between your numbers, and pack those into your command list for jit.gl.sketch, and then replace those commands whenever the coordinates change.

I think you need to first decide for yourself very clearly what it is you want to do, what kind of control you want to have over it, etc... Depending in on that there will be certain solutions that are more suitable than others.

 [...]but removes detailed control? [...]

The control you have is indeed different from the jit.gl.sketch commands, but jit.gl.mesh does have a texture coordinates inlet and a color inlet (amonst others) which allow you a lot of control depending on what you want. 

But you could also interpolate between your numbers, and pack those into your command list for jit.gl.sketch, and then replace those commands whenever the coordinates change. 

I think you need to first decide for yourself very clearly what it is you want to do, what kind of control you want to have over it, etc...  Depending in on that there will be certain solutions that are more suitable than others.


are you trying to fade the geometry coordinates, or the actual image?

if it's the image, simply capture each jit.gl.sketch image to a jit.gl.node, and crossfade the node's output with jit.gl.pix:

Thank you for all of your replies. I was fading between the geometry coordinates.

In the end I decided to interpolate between different co-ordinates using autopattr and packing the numbers into $1 $2 etc.

Using Jit.Xfade to fade between two different coordinate drawn images?