3-13: Mapping Materials in AutoCAD

3-1 INTRODUCTION TO 3-D

 

3-9 ADDING MATERIALS

3-2 ISOMETRIC DRAWING

 

3-10 PRIMITIVE SOLIDS

3-3 WORKING IN 3 DIMENSIONS

3-11 BOOLEAN OPERATIONS

3-4 VIEWING 3-D OBJECTS

3-12 CHANGING FROM THE WCS TO THE UCS

3-5 BASIC WIREFRAME MODELS

3-13 MAPPING MATERIALS

3-6 LINE THICKNESS

3-14 CREATING NEW MATERIALS

3-7 REGIONS AND 3-D FACES

3-15 EXTRA PROJECTS AND A TUTORIAL

3-7a MORE EXTRUDING & LOFTING

 

3-16 PUTTING IT ALL TOGETHER - MODEL A BUILDING

3-8 REVOLVED OBJECTS

3-17 INTRODUCTION TO RENDERING AND LIGHTING

  3-18 CREATING ANIMATIONS IN AUTOCAD

Topics covered in this Lesson:

Mapping materials on Objects

 

Whenever you are attaching materials to an object in AutoCAD, you are effectively ‘stretching' the image of the material around the object. For many objects, this can be acceptable. For a lot of others, though, you may want to adjust how the material is displayed on the object. This process is called mapping. The commands in this lesson are similar to the SETUV command used in previous versions of AutoCAD.

 

Here is an example of the same object with the same material, but with the mapping of the material adjusted on the right-side object.



Left: Default  -  Right: Box Mapping

 

By default, AutoCAD will apply the material as it sees fit. In this example above, the scale of the material is too small. To properly render the block, mapping is used to adjust and fine tune the material so that it looks the way you want it to appear. With a little knowledge of this command, you can make your renderings more realistic.

 

Here are the commands needed for mapping your materials:

 

COMMAND OR INPUT

ICON

LOCATION

DESCRIPTION

MATERIALMAP / SETUV / MAP

Material Mapping Icon

Home > Visualize > Material Mapping

Enter this on the command line to select mapping options via keyboard or icons.

Planar Mapping

Planar Mapping

Home > Visualize > Material Mapping > Planar

Maps individual faces of an object.

Box Mapping

Box Mapping

Home > Visualize > Material Mapping > Box

Maps any solid object with controls for width, depth and height as well as rotation on all sides.

Spherical Mapping

Spherical Mapping

Home > Visualize > Material Mapping > Spherical

Allows you to map any solid object, but uses rotation only.

Cylindrical mapping

Cylinder Mapping

Home > Visualize > Material Mapping > Cylindrical

Maps a solid object with height and rotation only.

 

Start by drawing a box that is 120x120x240 high and do a Zoom > Extents. Set your visual style to Realistic (Visualize > Visual Styles > Realistic). Switch to the SW ISO view.

 

As shown in Lesson 3-9 apply the material called "Masonry > Common" to the box.

 



Depending upon your settings it may look something like this in a default view.

 

Mapping Materials in AutoCAD 2007

 

In this view, you can see the bricks, but we want to make them bigger - this is done via mapping.

 

We'll start with the BOX MAPPING icon and then select the box and press enter.Box Mapping Icon

 

You should now see some new grips on your object (this are different from the grips that allow you to adjust the size of an object.

Mapping Options in AutoCAD 2007

 

The above image shows the added options when the rotate option <R> is selected on the command line.

 

With the grips active, you will need to make the map larger by selecting the mapping grips one at time to make the material bounding box (in yellow) larger. Once you have finished moving a grip, click in the drawing space to release it. Note that there is one on the top as well (for height) as well as the four at the bottom. When you are happy with the look, press enter to end the command. Your new and improved box could look something like this:

 

Before and After Mapping

 

As you can see, the one on the right looks better than the default on the left.

 

Now start the Box Mapping option again, and type in R <ENTER> to invoke the Rotate option. You should now see the circular grips as shown two images above. To rotate the map, move your mouse over one of the circles and it will change color. Click and you will be able to rotate the material around the axis you chose.

 

Mapping Grips in AutoCAD 2007

 

From these simple options, you can control the look of any material on any object. Ultimately, the look of your final rendering is the choice of you - the designer.

 

The image below shows the options below for the cylindrical and spherical mapping commands:

 

Spherical and Cylindrical Mapping in AutoCAD 2007

The left image shows the options available with the spherical mapping command. Note that it is limited to Rotation and Moving.

 

The right image shows the options of the cylindrical mapping command. It is limited to rotation and height adjustment.

 

Try the two mapping methods shown above on a sphere and cylinder. Then try using the Box Mapping command on those objects. You may find that in common usage, the Box Mapping method will provide you with the most versatile options to achieve the look you want.

 

PLANAR MAPPING

The other option not discussed yet is the PLANAR MAPPING command. It works a little differently than the others in that adjusts the material on one face only instead of the whole object.

Draw a cube 120x120x120. Apply a material to it that has some contrast to it so you can see the results clearly.

Start the Planar Mapping Command using this icon: Sphere Icon

 

Instead of just selecting an object, press the Control Key as you click the box and you will see that only one face is highlighted. Click on the face that you want to map. From there, you will see that you have the same resize and rotate grips available to you, but will only affect the one face you selected.

 

Extra Practice: Try mapping several different materials onto various objects of different sizes. You will need to get very familiar with this concept to produce better renderings.

 

Video: Mapping Material in AutoCAD 2016

 

 

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Take the Lesson 3-13 Quiz

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For Further Thought:

One of the hardest things in 3D drafting and rendering is getting the final model to look as great as you expect it to. The key to this is getting the best material mapped properly and lit correctly. This process is a complete skill-set unto itself. Depending upon your goals and job description, you may have to only get a rough concept across or provide an exact rendering showing the actual material. Mapping can make all the difference between a good rendering and a poor one.

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