Chapter 10 - Edl Surface Shading and Lighting When you choose Diffuse Shading or Plastic Shading, a number of lighting controls are available. • Lighting Intensity controls strength

© 2011 Delmar, Cengage Learning

Chapter 10

Creating 3D Objects

Objectives

• Extrude objects

• Revolve objects

• Manipulate surface shading and lighting

• Map artwork to 3D objects

© 2011 Delmar Cengage Learning

Extrude Objects

• Extrude & Bevel effects apply three-

dimensional effects to two-dimensional

objects.

– Two-dimensional objects have two axes: X for

width and Y for height

– Three-dimensional objects have Z axis added


Extrude Objects

• Determine the degree of extrusion by

changing the Extrude Depth value in 3D

Extrude & Bevel Options dialog box.

• Use the Caps buttons in 3D Extrude &

Bevel Options dialog box to make objects

appear solid or hollow.


Extrude Objects


Objects before and after being extruded

Extrude Objects

Rotating 3D objects

• The 3D Extrude & Bevel Options dialog

box offers controls for rotating extruded

objects.

• Rotate manually by dragging rotation

cube.


Extrude Objects

• When you rotate the cube, values on the

X, Y, and Z axes update to reflect the

changes made.

• Enter values in these boxes to rotate

object at specific angles.

• Once you extrude an object, you can view

any surface – front, back, left, or right.


Extrude Objects


Rotation

cube

X axis text box

Y axis text box

Z axis text box

Extrude Objects


Simple compound path Complex compound path

Simple compound path, extruded Complex compound path, extruded

Extrude Objects

• The Bevel menu offers ten predefined

bevel shapes you can apply to the edge of

an extruded object.

• You control the width of a bevel edge with

the Height slider.


Extrude Objects


Choose from 1 of

10 bevel shapes

Extrude Objects


Cove

RollingJaggy

Classic

Complex 2

Rounded

Bevel

shapes

applied to

edges

Extrude Objects

When Illustrator has difficulty rendering an

object with a beveled edge, a warning

appears in the 3D Extrude & Bevel Options

dialog box.


Extrude Objects

• Sometimes there is no solution, but your

best bet is to reduce the bevel width.

• Decide how to apply bevel using the Bevel

Extent In and Bevel Extent Out buttons in

3D Extrude & Bevel Options dialog box.


Extrude Objects


Bevel Extent Out button

Bevel Extent In button

Warning that beveled

edge may not have been

rendered well

Extrude Objects


Extruded text

Revolve Objects

Revolving an object “sweeps” a path in a

circular direction around the Y axis.

– Surface shading is applied automatically

– By default, object revolved around the vertical

axis that represents leftmost point

– The 3D Revolve Options dialog box offers an

option to revolve object from right edge


Revolve Objects


Revolving an object around

its left edge

Revolving an object around

its right edge

Revolve Objects

• A revolution occurs around the vertical axis.

– Starting path will depict half of the object you

want to revolve

• Once revolved, an object can be rotated by

using the 3D Revolve Options dialog box.

– It presents all surfaces of the graphic


Revolve Objects


Options for

revolving

objects

Revolve Objects


Identifying the path used to produce the revolved 3D graphic

Revolve Objects


A revolved graphic rotated four ways

Revolve Objects

• Apply the Revolve effect to multiple paths

simultaneously.

– Can be open or closed paths

• When Revolve effect is applied to multiple

paths, each path is revolved around its

own axis.


Revolve Objects

Revolving grouped objects

• When grouped, multiple paths are

revolved around a single axis.

• When multiple paths are grouped and

revolved, they will also rotate together.


Revolve Objects


Two grouped paths revolved around a single y-axis.

Object

before it is

revolved.

Object

after it is

revolved.

Revolve Objects


Four grouped paths after being revolved and rotated

Revolve Objects

Increasing the

Offset value in

the 3D Revolve

Options dialog

box increases

how far from the

Y axis the object

is revolved.


Enter

offset

value

here

Revolve Objects


Object revolved with a 90-

point offset from its Y-axis

Rotated object shows

90-point offset more clearly

Manipulate Surface Shading and Lighting

When you apply the Extrude & Bevel effect

or Revolve effect, surface shading and

lighting is applied automatically but can be

manipulated.



• When you revolve an object, four surface

shadings are available:

– Wireframe

– No Shading

– Diffuse Shading

– Plastic Shading




Wireframe No Shading Diffuse Shading Plastic Shading


When you choose Diffuse Shading or Plastic

Shading, a number of lighting controls are available.

• Lighting Intensity controls strength of light on object.

• Ambient Light determines how object is lit globally.

• Highlight Intensity controls how intense highlight appears.

• Highlight Size controls how large highlights appear.

• Blend Steps controls how smoothly shading appears.



When Diffuse Shading or Plastic Shading is

chosen, you can drag light source to a new

location to light an object from a different

angle.



• Add additional light sources by clicking New

Light button.

• Apply different light intensity values to individual

light sources.

• Delete a light source by selecting it, then clicking

Delete Light button.

• Move selected light to back button moves

light source to back.




20% Ambient light60% Ambient light



Default

light

source

Viewing default light source settings

Default light

source settings



Drag to

relocate

light

source

Map Artwork to 3D Objects

You can map a

2-dimensional object to a

3-dimensional object.

For example, a label is a

2-dimensional object that

can be wrapped around a

3-dimensional can.



• First convert 2D object to symbol.

• Select a 3D object.

• Click Map Art in the 3D Revolve Options

dialog box.




Objects to be used for mapping


• In the Map Art dialog box choose which

surface you want to map the art on.

• When you click a surface button, active

surface is shown in red wireframe on 3D

object.




Surface buttons

Interior of curved lines represents visible surface (1 of 4)


• Grid pattern represents the complete

surface of the object.

• Includes the entire surface around the

object that you may not see.



• Once surface chosen, choose symbol to

be mapped by clicking the Symbol list

arrow.

– Symbol artwork is centered on grid.

– Drag artwork so it completely covers curved

lines

– Once artwork is mapped, it reshapes itself to

the three-dimensional object




Wrapping

Paper symbol

selected

Map Artwork to 3D objects


Symbol

artwork is

mapped to

3-D

object.

Work with a Perspective Grid

• Use the Perspective Grid feature to draw

and create objects in perspective.

• Three types of grids:

– 1-point perspective






1-point perspective grid 2-point perspective grid 3-point perspective grid


• Point refers to vanishing point.

• 2-point perspective is the default.

• Click the Perspective Grid tool on the

Tools panel to access the grid.

• Or select to show it on the View menu.

• You can resize and reshape the grid.


• Save your modified grid as a Perspective

Grid Preset.

• You can modify your saved preset.

• When you are in Perspective Grid mode,

the basic shape tools draw in perspective.





Save your

grid

settings

as a

named

preset



• Specify on which

perspective plane you

want to draw by

clicking one of the

faces on the Plane

Switching Widget.



Left perspective

plane is selected

Rectangle is drawn

on left plane


Once you’ve drawn objects in perspective,

use the Perspective Selection tool to click

and drag objects to move and modify them

in perspective.




Three copies of an

ellipse dragged

and dropped with

the Perspective

Selection tool.

Chapter 10 - Edl Surface Shading and Lighting When you choose Diffuse Shading or Plastic Shading, a number of lighting controls are available. • Lighting Intensity controls strength

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