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Autodesk AutoCAD 2009: Certified Professional Tutorials

Hatching Objects / Hatch Gradients




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Now that we've looked at solid fills using the Hatch Command we're now going to look at the Gradient Settings in our AutoCAD drawing. So what we're going to do here now is we're going to go to the Hatch Command again here and as you can see we've got our solid there which is what we used for the Tiling and Joinery. If I go to Gradient though what you'll notice now is I can set different colors like so. I can have one color which means I have a Gradient Fill using the one color and I can change it from Tint to Shade. So Shade applies Black in the color, Tint applies White in the color and I can have different patterns as you can see there. I can change the angle if I wish to say 45 degrees, notice the patterns change direction. Now Gradient Fill is very useful because those colors will always show regardless of the Layout Color, there is no By Layer Setting as such, the colors will always show. Notice you still got island detection here as well and you've still got Add Pick Points and also Add Select Objects, you still got Associative, you still got Create Set for Hatches as well. Now that's great but obviously to get an exact color here especially if you're using two colors for example, if I go to two colors here like so how do I pick a color? I've got RGB, Red, Green, Blue, I've got HSL, Hue, Saturation and Luminance, I've got index colors, I've got colors books. There is so many different colors in AutoCAD that it is very difficult to have an exact setting or is it? Let's just cancel that and cancel the Gradient Fill for a moment, that is why when you create a Gradient Fill you save it as a swatch on your drawing. That way you can then use the Inherit Properties Option in the Hatch Dialog Box. So now what I'm going to do, I'm going to place some Glazing in my windows. I'm only going to do the dormer window in this particular case. So let's use the dormer window here and use the inherit property setting. So I go to the Hatch Command, doesn't matter whether I'm in Gradient or Hatch, inherit properties can be used in either of those Tabs. So let's go to inherit properties there, you come into the drawing area and it prompts you to select the Hatch Object. Now be careful here don't select the rectangle that surrounds it. That's purely a rectangle, an object that you've hatched using a Gradient or a Fill. Make sure you hover; can you see it go grainy like that? That highlights that particular gradient fill like so. If I move over the Glazing one here that highlights it there as well. When it goes grainy is when you Left Click. Then you get the Option to pick an Internal Point or notice on the Right Hand Shortcut Menu I can go to select objects if I want to and the prompt changes. I want Pick Internal Point. I'm going to do the Glazing on my Dormer Window so if I zoom in now, the Glazing I want is in each of these little window panels like this. So each one of those is a boundary so I Left Click away in each boundary like so. What I then do is I Right Click and I preview and it applies my Gradient Fill to each of those window panels. But, notice the Gradient Fill applies across all of them in a nice graded setting. It doesn't just apply it to one, it looks and goes ah, I have X number of boundaries, I need to apply that across all of them. So I Right Click to accept and my Gradient Fill now is applied to my window. If I come out slightly now it actually looks like we have light reflecting off of those window panels. So that's how we use our Gradient Fills, so let's have a look now of doing that with some of our Brickwork as well. We've got the three Brickwork Panels down here where the actual main windows of the house are. So again we go to Hatch, we use inherit properties here, I don't even need to go to Gradient Tab, I just click on Inherit Properties and I hover over the brickwork here. Notice it is a mixture of a gray and an orangey color there, a sort of Redland brick type like color. Click on the Grainy Gradient Fill when it highlights and again pick internal points. So I pick here, make sure you pick on point inside a brick not on top of a brick and then I Right Click and I preview. Notice this time its gone on top, it's gone on top of the brickwork. So what I can do now is I hit escape to return to the Dialog Box and I make sure that I send it to the back like so. I can do that in the Hatch Dialog or I can do it using the drawl order on the right hand Shortcut Menu. If I preview now you'll notice it's gone behind the brickwork hatch, notice the gray spreads across. Can you see that there? Goes from gray to orange across the three patterns, I then Right Click to accept. I could carry on, add noise here, coloring in my dormer window, coloring in my other window panels but obviously I'll leave that for you to do. But the idea here is that the Gradient Fills apply colors and settings that actually make your drawing look more real to life. Obviously hatching, gradient and fills now indicative when you're working in a 2D drawing but they give people a good idea of what the material actually looks like in real life.

Tutorial Information

Course: Autodesk AutoCAD 2009: Certified Professional
Author: Shaun Bryant
SKU: 33947
ISBN: 1-935320-14-9
Release Date: 2008-11-26
Duration: 4 hrs / 56 lessons
Work Files: Yes
Captions: Available on CD and Online University
Compatibility: Vista/XP/2000, OS X, Linux
QuickTime 7, Flash 8

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