[David Bode]

I placed a set of triangles inside of the source comps, made them black, and scaled them to 98%. In the final comp with the camera I made an adjustment layer to control opacity that I linked to the adjustment layers in the source comp A and B and keyframed their opacity out every time side C was on. For what ever reason the side on 240 degrees had a bleed that I could not fix.

I made a tutorial on this that should be on AEtutsplus.com some time this week.

DB

[David Bode]

Dan,

Thanks for the reply. I have read a bunch on your motionscript.com site, and I figured this was the case here. I remember reading what you responded with on your site, but I couldn’t find a way to make the expression calculate what it had already done. I am sure there is some way to do it, but I couldn’t figure it out.

Anyway, I managed to work a different way around it by using a null with a different expression and then adding the result to my control null. It seems to work just fine. I am sure this is not the most elegant way to do this, but it works and I feel like I have seceded in nailing this effect pretty darn well.

Check it out and let me know what you think!

https://vimeo.com/davebode/nbceffect

Thanks again!
Dave Bode

[David Bode]

https://vimeo.com/davebode/nbceffect

I think I have it worked out now. Check it out.

I worked out a different way to get them to spin how I wanted. It probably is not the most elegant but I can make the triangles spin to the right, to the left, and just make half of them spin left and half right from the same gradient layer.

I think this looks pretty hot now.

Thanks for your help!

[David Bode]

Or or something like this…

target = thisComp.layer(“GRAD”);
red = target.sampleImage([80, 200],[3.5, 3.5])[0];
green = target.sampleImage([80, 200],[3.5, 3.5])[1]
linear (red, 0, 1, transform.yRotation, 120);
linear (green, 0, 1, transform.yRotation, 240);

I have a layer “GRAD” with a black solid as the base. Then I animate a red solid across so now the layer is filled with red. Then I animate a layer of green across so the layer is filled with green.

This expression doesn’t seem to work for the red gradient, but it does work for the green. If I delete the 2 lines that index the green channel it works, but I want both to work.

[David Bode]

I tried the alpha add but that didn’t seem to help all that much.

I did find 2 tricks to make it a little better. The one that works the best is to create smaller triangles that are all black that sit inside the original triangles. This was pretty easy to do and works ok. The effect isn’t spot on, but it is getting closer.

I have been working on the sampleImage expression and I have managed to make that turn the triangles when driven be a gradient.

target = thisComp.layer(“GRAD”);
darkgray = target.sampleImage([80, 200],[3.5, 3.5])[0];
linear (darkgray, 0, .33, 0, 120);

What I can’t work out is how to use the gradient to make the rotation move the other way. Right now I have it setup with a black solid and a 33% gray solid that animates from right to left. That works just fine.

Perhaps it is impossible but what I would like is to have the layer look at another gradient, something like 33%-66% gray, and have the value increase on top of what I already have. So the first gradient takes the Y rotation from 0-120 and the second takes it from what ever the rotation is currently to 240.

Any idea on this?

[David Bode]

https://f1.creativecow.net/file/3194/3194_trianglesmaster.mp4.zip

Perhaps this will help. This is a rendered out version of the comp I uploaded. When the triangles turn I can see through the edges of where side A and B meet onto the back side of side C.

Let me know if that makes sense at all.

Thanks,
DB

[David Bode]

Thanks for the suggestion Roland.

I had a comp setup this way but I the layers were out of order so it didn’t render correctly.

I now have this working pretty well, but it is still not exactly right.

I am getting bleed through on the edges of the triangles as they turn. I remember seeing a post about changing the blend mode to alpha add but that didn’t seem to help.

https://f1.creativecow.net/file/3192/3192_nbcvenetianblindeffect.aep.zip

Also I would love to know how you control the motion with gradients. Your package looks very slick.

Thanks again for your help.
Dave

[David Bode]

I don’t think this is a card dance thing, but I could be wrong. If you look at the clip it is similar to one of those 3 sided triangular billboards. It looks to me like it is a set of 24 or so triangles that turn 120 degrees to reveal the next image.

I have been trying to work out how to replicate this look, but I cant figure it out. It is a slick looking effect.

I made a comp that almost works using a comps that have 24 panels cut out of them and then put together to make a 3D comp, but the rendering order is screwing them up.

Check it out. https://f1.creativecow.net/file/3189/3189_nbcvenetianblindeffect1.aep.zip

Any other suggestions?