Technical Slop

Solid Continued

Okay, so what are we doing? Well, we are taking it easy. I don't want to fry anyone's brain just yet. Believe me, that comes later. Right now we are still building a foundation.

We are working with a one-channel document for the D-Map (Greyscale). We are not worried about exact percents or values of Grey. Right now we are all about White, Black, and positive/negative values.

Remember Biker Chic? I hope so. We'll continue working with her.

This is our next D-Map. And it's just as exciting as the first.

Black square in the middle with a fat Gray border. That Black in middle...

That's what it does with a positive value for Horizontal. It grabs from the left, as opposed to from the right with White.

What? you say. Horizontal with a positive value: White grabs from the right and Black grabs from the left. Grey is in the middle and has no effect.

And this is a negative value for Horizontal.

Okay, take a moment. Do some deep breathing.

With a positive value for vertical, Black in the D-Map grabs from above.

With a negative value for vertical, Black in the D-Map grabs from below.

I don't know if you've noticed or not, but this is 'backwards' from the first page. With the same percentages, everything is grabbed from the opposite direction.

Black grabs from above or to the left with positive values, while White grabs from below for from the right.

Conversely, Black grabs from below or from the right with negative values. White grabs from below or from the left with negative values.

Remember this? Okay, for the first D-Map, we used positve horizontal and negative veritcal. How can we accomplish this same thing with our second D-Map.

If you said, "Negative horizontal and positive vertical," then you are right. All we did was swap the valences.

Quite the twister, eh? Real pain to keep straight sometimes.

Care to move on to Page 3 for a quick little exercise?