Lessons: 20Length: 1.8 hours

• Overview
• Transcript

# 6.3 Transform

In this lesson I’ll show you the many ways in which you can use transform filters to distort your image.

## 7.Conclusion1 lesson, 00:46

### 6.3 Transform

Hi. Welcome back. In this lesson, I'll be showing you how to use the transform filters. So the last category of filter we have left to explore is the transform category. I've dragged in a pattern from our materials library because more from the not transform filters tend to look a little bit 3D. So it'll be easier to see what's going on if we apply that to a pattern. So if we go to our filters, choose transform, and choose the first category which is convert polar coordinate. And you'll see that from a flat pattern, we now have a more circular pattern. That's because the default behavior is rectangular coordinate to polar coordinate. And what that's doing is taking our rectangular image, so our rectangular coordinates, and converting them. So adding a pole to that and stretching them around that pole. So in essence, it's stretching our flat pattern and stretching it into a circle. If we had a pattern that was already like this, so a pattern that centered around a pole and went around, we could choose polar coordinate to rectangular coordinate. And what that would do would be to unwrap that circular pattern and turn it into a flat image. The last choice is spherical surface reflection. And what that does is change our pattern and make it look as if it's being reflected in the back of a spoon, for example. The next filter is the curved face projection. If I move this box out of the way, you'll see that the method at the moment is set to spherical surface. So what's happening on our pattern here, you can see, is a big bulge. A big spherical bulge has appeared and it looks a bit 3D. We can change the amount of that, so the further up we drag it, the more spherical our pattern looks. We can even change the mode. So at the moment a sphere is popping out of our pattern, but if we change that to column and drag the amount up a bit more, you'll see that our whole pattern has change to look like it's wrapping around a column. At the moment this is applying to our whole image. So if we change the area from apply to whole to specify size, you'll see that a little cross has appeared on our canvas and we can drag that. And that'll specify exactly where our effect is happening. I'll just change that to spherical so you can see exactly what's happening. So that's the center of our sphere here and as we change the radius, so I'll make that a lot smaller, you'll see we have a smaller sphere. And we can also change how flat our sphere is. So that goes more like an egg, and if we drag towards the left, It becomes more of a horizontal egg. Next up, we can choose the fisheye lens. And that basically turns our image into something that looks like it's been shot by a fisheye lens. So we can change how much distortion we have like that. We can change the center by dragging the cross, and we can even change again, apply to whole, we can change that to a specific size, so only a part of our image is being effected by this distortion. Back to filters, we can pinch, which is doing almost the opposite of our fisheye lens. So it's squeezing everything in, towards this x on our canvas. Again, we can drag the x so the center becomes here or here. We can change the amount by dragging the amount slider, and we have apply to whole or specify size again. Next we have Wave. And that applies this wave like effect to our texture. We can change the direction of our waves. So as I drag that, you'll see it changes the direction and these numbers correspond to an angle. So if I put 90 degrees in there, you'll see our waves become vertical. I can also change the amplitude. So as I drag that, our waves become much more violent, and much stronger, and I can increase the number of waves. So the further right I drag this one, the more waves we have. Next, we have Wave shape. Now, you can think of this one as if you're viewing a pattern through the top of rippling water. So say you have a pattern on the bottom of a swimming pool, for example. This is what it would look like if the water on the top was moving. And, we can change the type of wave. At the moment, we have a sine wave. We can change it to a triangular wave, to give this more geometric look. Or a rectangular wave to give a cubic look. I'll change that back to sine wave. We can change the number of waves. So, the more waves we have, the more distorted our image becomes. We can change the wavelength. So as we drag our minimum value up, that means that the stronger our minimum waves becomes. And again, we can do that for our maximum value. With amplitude, that's how far our waves actually stretch. So the minimum stretch we can change here. And the maximum stretch we can change there. We can change our horizontal ratio. So at the moment, it's set to 100%. And as I drag that down, our waves become more and more vertical, you can see there they're becoming quite vertical. And we can do the same from a vertical ratio. We can also randomize this. So we've set all of our different numbers here, but if we don't like how this one looks, we can use those numbers to generate more waves by clicking the Regeneration button. So, every time you click that, it'll generate new waves based on these numbers that you've entered into the box here. If we go back to our filters, the next filter we can choose is Whirlpool. So, as you'd expect, that creates a whirlpool effect on our canvas. So, I can change whether whirlpool is centered and I can change how much twist we have. So the more I drag that one, the more twist we have. I can change the tension, so the further towards the left I go, the more ornamental twist because there's less tension. So it's acting as if we're working with already loose material. So the tenser we go, the less it will twist and the tighter it will become. And again, you can change that to apply to the whole or we can specify a size and drag that around our canvas. Last one we have is Zigzag. And this one, if I just change that to apply to the whole, you can see it's basically a mixture between the whirlpool and the wave. So we have the two whirlpool and wave settings to change. We can change our rotation. And we can change the number of waves. And again, we can apply that to the whole, or we could specify size and drag that around our canvas. In the next lesson, we'll be reviewing everything we've learned.

Back to the top