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Ho to do this …
Hi!!
How can I create with AE this effect you see in the image as background ?
https://www.videomakers.net/staff/blies/image.jpg
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4 Replies
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Background.. Just create a red solid and use the pen tool to draw the mask shape.. then feather the mask. You could use this pic as the reference by scaling it up to your comp size then draw the shape on the red solid. Bring the opacity down a bit so you can see the pic behind for reference, and don’t forget to close the mask. As far as the other elements, Photoshop then composite.
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You could draw the masks by hand, but this lacks in precision. For a radial starburst like that you could try this instead:
Create a layer of your desired color, then make a series of equally spaced rectangular masks stretching the full height of the comp, but obviously much narrower: if you want 10 bursts out of the center you need to fit 10 equally spaced masks in your composition. In a standard 720 x 480 pixel NTSC comp this means about 36 pixels wide per mask (with 36 pixels in between masks). Do this until you have you desired number of masks spread across the comp laterally.
You could alternatively make your results more accurate by creating a layer that is 36 pixels wide (again for 10 ‘bursts’) and placing it at the far left edge of the comp (anchor point: 0,0. position 0,0). Then duplicating this layer 9 times (for 10 total) and placing the last layer 36 pixels from the right side of the comp (anchor point: 36, 0. position: 684, 0). Then select all the layers and use the distribute centers function in the “Align & Distribute” pane. When these are distributed, pre-comp them.
Now, either way you went here you should have 10 equally (roughly) spaced vertical bands of color. Apply Effect > Distort > Polar Coordinates to the layer, choose Rect to Polar and set the Interpolation to 100%. This should give you a perfectly spaced and perfectly radial burst of bands. Adjust your mask feather settings to taste, a final touch would be creating a circular mask at the center of the burst.
This is more involved than just drawing it by hand, but should provide more accurate results.
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Thanks for the answers.
wuzelwazel:
I have just a little trouble: with your explanations I got something like a mill and 1st and 10th layer are too narrow (2 in 1).
Where I was wrong ?
Many thanksCheck this out
https://www.glbproject.it -
[bliesvm] “I have just a little trouble: with your explanations I got something like a mill and 1st and 10th layer are too narrow (2 in 1). Where I was wrong ?”
Check this article out, it may help you understand polar coordinates a bit better:
https://en.wikipedia.org/wiki/Polar_Coordinates
Now, here’s a new workflow that might work better for you. For my sake I’m going to assume a comp size of 720 x 480, but I’ll give you other info in case you’re not working with that resolution:
1) Create a new composition, we’ll be doing all our work in a ‘pre-comp’
2) Create an adjustment layer the same size as the comp, all the solid layers will go below this.
3) Create a solid in your new composition that is 36 pixels wide (comp width divided by 20) and 480 pixels tall (comp height).
4) Set this solid layer’s anchor point and position to [0,0]. It should be on the very far left side of the comp.
5) Apply this expression to the position:
x = (index - 2) * (thisLayer.width * 2);
y = 0;
[x,y]6) Now duplicate the solid layer 9 times for a total of 10 layers, each 36 pixels wide. The expression spaces them evenly across the comp with one solid on the left edge and empty space on the right edge (this empty space is important).
7) Apply the Distort > Polar Coordinates effect to the Adjustment Layer and bring Interpolation up to 100%.
You will have to adjust the layer’s original width depending on the comp size and how many solid layers you want to fit in the comp. You can use this formula to determine your solid width: composition width / (number of solids * 2).
Hope that helps!
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