CATIA Photo Studio - CAD/CAM Laboratory

CATIA Photo Studio
CATIA® V5R19
TABLE OF CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Photo Studio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Toolbars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Photo Studio Workbench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Photo Studio Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Loading a Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Creating a Quick Render . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Interactive Qualities of Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Types of Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Creating an Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Un-rendered Walls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Deactivated Walls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Hide/Show & Deactivating Walls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Scaling Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Properties of Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Moving environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Moving environments with the Bounding Box . . . . . . . . . . . . . . . . . . . . . . 28
Moving environments with the Compass . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Moving environments using its Properties . . . . . . . . . . . . . . . . . . . . . . . . . 30
Applying Materials to Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Procedural Textures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Applying Images Files to Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Adjusting Mapped Images . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Environment Walls and Shadows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Multiple Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Activating and Deactivating Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Up-Pickable Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
© Wichita State University
Table of Contents, Page i
CATIA Photo Studio
CATIA® V5R19
Cameras . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Creating a Camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Understanding Camera Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Multiple Cameras . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Camera Commands Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Update From View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Manipulating Cameras . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Moving a Camera by Updating the View . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Moving a Camera with the Compass or Bounding Box . . . . . . . . . . . . . . . 61
Moving a Camera with its Manipulator Handles . . . . . . . . . . . . . . . . . . . . . 63
Moving a Camera using its Position Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Moving a Camera using the Lens Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Lens Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Zoom Features – Focal Length and Focal Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Manipulate Focal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Modifying the View Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Stickers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Mapping Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Creating Stickers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Mapping Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Flipping and Sizing Stickers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Orienting and Translating Stickers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Scaling Stickers Disproportionately . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Scaling and Positioning Stickers with the Compass . . . . . . . . . . . . . . . . . . . . . . . . 93
Scaling Stickers with the Sticker Manipulator Handle . . . . . . . . . . . . . . . . . . . . . . 94
Applying Stickers to Multiple Faces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Spherical Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Layering Stickers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Lighting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Making a Color Transparent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Modifying the Sticker Default Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Applying Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Copying and Pasting Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Positioning and Scaling Materials using the Compass . . . . . . . . . . . . . . . . . . . . . 115
Material Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Lighting Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Texture Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Material Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Creating a Material Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Adding new materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Adding New Families to a Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Deleting Materials and Families . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Copying and Pasting Materials between Families . . . . . . . . . . . . . . . . . . . 150
Returning to CATIA’s Default Library . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Table of Contents, Page ii
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CATIA Photo Studio
CATIA® V5R19
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Creating a Light Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Light Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Lighting Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Shadows Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Area Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Indirect Illumination Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Position Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Punctual (Standard) Light Characteristics and Common Uses . . . . . . . . . . . . . . . 180
Surfacic (Area) Light Characteristics and Common Uses . . . . . . . . . . . . . . . . . . . 181
Light Commands Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Turning lights on and off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Three Point Light Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Shootings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Creating a Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Active Shootings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Editing Shootings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Managing Rendered Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Saving Single-Frames from On Screen Output . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Saving Animations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Tool Options Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Animation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Previewing the Turntable Animation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Rendering the Turntable Animation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Simulation Animations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Rendering the Simulation Animation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Photo Studio Easy Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Custom Scenes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Practice Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Problem #1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Problem #2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Problem #3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Problem #4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Problem #5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
© Wichita State University
Table of Contents, Page iii
CATIA Photo Studio
CATIA® V5R19
Introduction
CATIA Version 5 Photo Studio
Upon completion of this course, the student should have a full understanding of the
following topics:
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Environments, lights, and cameras
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Texture creation and application
-
Turntable and simulation animations
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Basic lighting techniques
-
Rendering
© Wichita State University
Introduction, Page 1
CATIA Photo Studio
CATIA® V5R19
Photo Studio
Photo Studio is used to produce professional, print-quality images of your product. It lets
you create a range of styles from photo realistic to illustrative images. You can also create
simple animations of models and products.
Introduction, Page 2
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CATIA Photo Studio
CATIA® V5R19
The Photo Studio Work Flow
© Wichita State University
Introduction, Page 3
CATIA Photo Studio
CATIA® V5R19
Lighting
As you’ve noticed so far, your scene displays adequately with default lighting. However
you can use Photo Studio’s many lighting tools to create a truly compelling shot. Lights let
you focus attention on different objects in the scene. They also let you create a certain look,
or ‘mood’ to the scene. This section shows you how to create different light sources and
how to use them in order to enhance the look of your scene.
Default Lighting
3 Point Light Set-up
Using lights to create a mood
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Lighting, Page 153
CATIA Photo Studio
CATIA® V5R19
Creating a Light Source
There are a number of available lighting options.
Create a new product document.
Take a look at the Create Light toolbar.
The first three icons create Standard lights, also called Punctual lights. These options
consist of spot lights, point lights and directional lights. The last four icons create different
Area lights, also called Surfacic lights. The options for Area lights are rectangle, disk,
sphere, and cylinder.
Standard lights create only sharp-edged shadows, while Area lights create shadows with
soft-edges. Standard lights generally require less processing and render faster than Area
lights. The following shots show the effect of Standard and Area lights. Notice the
differences in shadow quality. Both shots are rendered with the Anti-aliasing set to High
and a resolution of 1200 x 900 pixels.
Standard Spot
Area Disk Light
Note: It is possible to use both light types in one shot.
Lighting, Page 154
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CATIA Photo Studio
CATIA® V5R19
Select the Create Spot Light icon.
The spot light appears as a cone with green
manipulator handles at its top and base. The manipulator handles will only appear if the
light is selected. The top handle is the source point for the light, representing the location of
the light. The source point rotates the spot light around the bottom handle, the target point.
The handles are similar to those you saw when you worked with cameras. The sphere
rotates the light; the line translates it; and the square does both.
Spot lights are the most frequently used lights. They’re used to light individual objects in a
scene. They are not used to light the entire scene uniformly.
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Lighting, Page 155
CATIA Photo Studio
CATIA® V5R19
Select anywhere in the work area to deselect the spot light. Notice that the deselected
spot light is represented with a star at the apex of the cone. An arrow points from the star
toward the base of the cone. The star is called the anchoring point, it shows the location of
the light source. The arrow is called the direction vector, it shows the direction that the light
is shining.
Delete the spot light from the specification tree.
Select the Create Point Light icon.
in all directions, like a light bulb.
A point light is created. Point lights emit light
Deselect the light. Notice how point lights are represented when they’re unselected. They
have a central anchoring point, but no direction vector.
Lighting, Page 156
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CATIA Photo Studio
Select the Create Multi-View icon and select the point light.
better view to see the effect of manipulating the light’s handles.
CATIA® V5R19
This gives you a
Drag the handle by the sphere. The handle rotates in any direction. It’s important to
realize that the light itself doesn’t rotate, only the handle. Since point lights emit light in all
directions, rotating a point light would have no effect. After rotating the handle, the new
direction the handle is pointing is the new direction that you’re able to translate the light.
Drag the handle by the line. The light translates along the axis that the handle is pointing.
To translate in a different direction, rotate the handle again, then drag by the line.
Drag the handle by the square. Notice that you can translate the light freely.
Turn off the Create Multi-View icon.
Delete the point light.
© Wichita State University
Lighting, Page 157
CATIA Photo Studio
Select the Create Directional Light icon.
CATIA® V5R19
A directional light is created.
Deselect the Directional Light. You are now able to tell which way the light is pointing by
the vector direction.
You can clearly see the anchoring point and the direction vector. Directional lights emit
light at a constant intensity in one direction. Since the light intensity doesn’t diminish with
distance from the light source, directional lighting can light an entire scene, similar to
sunlight. They are not used to light individual objects in the scene.
Lighting, Page 158
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CATIA Photo Studio
CATIA® V5R19
Light Properties
The other type of light is Area lights which consist of four shapes: rectangle, disk, sphere
and cylinder. It’s also possible to change an existing Standard light into an Area light. The
properties of a light allows you to be able to customize the light to your needs.
Right select on the directional light in the specification tree and select Properties. The
Properties window appears.
Lighting Tab
Notice the Lighting tab is divided into two areas, Source and Attenuation. The Source area
lets you change the light’s Type and parameters for that Type. The Attenuation area lets you
control how the light attenuates or fades over distance.
Source
Type
Allows you to switch the type of light
Angle
Adjusts the angle of the light
Color
Changes the color of the light. Every light Type has a Color
parameter. Refer to the Stickers section for a discussion of the
Lighting tab’s Color parameters.
Intensity
Modifies the intensity of the light. Every light Type has an Intensity
parameter. Intensity refers to the brightness/dimness of that light.
The Intensity icon opens the Intensity window.
It is only active
in real time rendering.
Attenuation
Falloff
Adjusts the diminishing of light between the source and target
© Wichita State University
Lighting, Page 159
CATIA Photo Studio
CATIA® V5R19
None
The light will shine at full intensity for infinity. However,
cone angle limits are active so the light is contained within the
cone.
Linear
Light attenuation decreases linearly with a 1/r ratio
(“r”=distance to light origin)
Realistic
Light attenuation decreases with a 1/r2 ratio
End
Defines the point where attenuation ends
Start Ratio
Adjusts where the full illumination begins
Angle Ratio
Adjusts how hard or soft the edge of the light will be
Lighting, Page 160
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CATIA Photo Studio
CATIA® V5R19
Type
In the Source area, select each of the three different Type options and notice what
parameters are available for each.
Notice that the Angle parameter only applies to Spot lights. Also notice that selecting a
different light Type changes the light’s icon in the specification tree.
Change the Type to Spot and adjust the Angle value to its maximum and minimum
values. Notice how the cone of the light changes. The cone shows you the region the light
illuminates. The Angle parameter, therefore, controls the area of illumination.
90deg for widest area of illumination
0.057deg for narrowest area of illumination
Select OK to the Properties window. Since you initially opened the properties for a
directional light, the options you’ve been looking at only apply to the Standard lights; Spot,
Point, and Directional lights.
© Wichita State University
Lighting, Page 161
CATIA Photo Studio
Turn on the Create Multi-View icon.
and front of the light.
CATIA® V5R19
Make sure you have good views of the side
Re-open the Properties window for the light and select the Area tab.
Select each of the Type options available and experiment with changing the values for
the parameters that are available for each Type. Notice how the light changes in the
work area.
Angle
Even though it’s not available on the Area tab, the Disk and Rectangle lights have an Angle
parameter as well. To change the Angle value through the Properties window you must
switch back to the Lighting tab.
With the Type set to Rectangle, select the Lighting tab and change the Angle parameter
values. Notice how the light changes in the work area.
Select OK to close the Properties window. You can also change the Angle in the display.
Select the light in the work area and move the cursor over the side of the cone. A
curved arrow, the angle manipulator, appears when you have successfully selected the side.
Lighting, Page 162
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CATIA Photo Studio
CATIA® V5R19
Drag the side of the cone to adjust the angle. You will notice that this does the same
thing as adjusting the value in the properties window.
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Lighting, Page 163
CATIA Photo Studio
CATIA® V5R19
Falloff
Attenuation is the diminishing of light from full strength (at the light source) to zero (at the
light target) within the perimeters of the light. Think of the perimeter as the boundary of the
light, i.e., the cone that encloses the light. The perimeter is what you see when you select
the light.
Another name for attenuation is falloff. All lights, except directional lights, have falloff.
Directional lights shine at a constant intensity over an infinite distance so there is no
diminishing of light.
Under the Attenuation section of the Lighting tab, select the drop down menu for
Falloff. You can choose from three types.
Select Linear for now.
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End
The End parameter sets the point where attenuation ends or the point where the light falls to
darkness. Objects outside the End parameter are not lit by the light. You can set the End
value from the Properties window or you can set it from the work area by dragging the
light’s end modifying handle.
Select OK in the Properties window.
With the light selected, move the cursor over one of the end lines at the target end of
the light. A green, double-headed arrow appears.
Drag this manipulator to shorten or lengthen the attenuation range.
Close the document without saving.
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Open the End Exercise document from the End Exercise directory. A birdhouse
should appear as shown.
Perform a quick render. Because the bird house is outside of the light’s attenuation range,
the bird house is not illuminated.
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Expand the Camera branch in the specification tree and double-click on Camera 1.
This will properly align you for the next step.
Adjust the end of the spot light so that it encloses the birdhouse as shown below.
Perform another quick render. Part of the bird house should now be lit.
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Move the end of the spot light so that it extends completely past the birdhouse as
shown below.
Perform another quick render. The house and some of the post should now be lit.
Close the document without saving.
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CATIA Photo Studio
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Start Ratio
The Start Ratio adjusts the fall off range, letting you determine where full illumination will
begin. A Start Ratio of 0.0 means that full illumination starts at the light source; a value of
0.5 means that it begins half way between the light source and target point; and a Start Ratio
of 1.0 means that full illumination starts at the target point, so that there is no falloff.
Open the Start Ratio document from the Start Ratio directory.
Access the light’s Properties window. Notice that the Start Ratio in the Lighting tab is set
to 0.1. The light should appear as shown below.
Select OK to the properties window.
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Perform a quick render. The house is barely illuminated.
Now set the Start Ratio to 0.9 and perform another quick render. The light intensity on
the house has increased because the Start Ratio is closer to the house.
Close the document without saving.
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Angle Ratio
The Angle Ratio determines how hard or soft the edge of the light is. Only spot, rectangle,
and disk lights have this parameter.
Open the Angle Ratio document from the Angle Ratio directory and look at the light
setup. The light is focused on the front of the birdhouse, and the target point is located
about halfway to the back of the birdhouse.
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Double-click on Camera 1 from the specification tree.
From the viewpoint of Camera 1, perform three renders, with the Angle Ratios of 1.0,
0.5, and 0.25. Renders with Angle Ratios of 1.0, 0.5 and 0.25 are shown below.
Close the document without saving.
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Shadows Tab
Ray Traced
Enabled
Real Time
Activates ray tracing. With Ray Traced activated the light
will cast shadows.
Only applies when lighting is Directional
On Environment
Allows the shadow to be view on the environment walls in the
normal work area without rendering
Smoothing
The sharpness of the shadow on the environment
Color
Allows you to define the color of the shadow
Transparency
Allows you to set the opacity of the shadow
To keep a light from casting shadows, uncheck the Ray Traced option under the Shadows
tab.
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Open the Shadows document from the Shadows directory.
Perform a render from the viewpoint of Camera 1. In this case the Ray Traced option is
deactivated so there should not be any shadows.
In the Properties window of Light 1, turn on the Ray Traced option in the Shadows tab.
Perform another render from the viwpoint of Camera 1. This time the view will show
shadows from the light.
Close the document without saving.
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