Transcript Download: Alias Sketching PowerPoint

Digital
Concept
Sketching
By David Lee, IDSA
Industrial Design Department
Pasadena City College
October 27, 2005
Copyright 2005 David Lee Design
Emphasizing draw-thru of line work
Using a combination of
Both pen and airbrush tools
Rapid Visualization of shapes and surfaces
Hand drawn ink line drawing of a car
A great way to begin sketching in Sketchbook Pro2 is to use
Hand-drawn line work and save it as background art.
The line drawing is below the shading
You can now comfortably sketch-render atop
your background layer!
Upstream sketch development
Is easy with Sketchbook Pro2.. By
Using a bitmap image as an underlay,
it can serve as a 1:1 template for model
details. A case study showing this follows.
Design Case Study
Demonstrating
how Sketchbook Pro2
seamlessly works
with downstream
CAD development.
Copyright 2005 David Lee Design
Using Alias Sketchbook Pro2,
begin your design by sketching a
front view of your design. Using
front, side, or top view drawings
helps you position it as an
underlay within view ports of most
CAD Applications. Sketch freely,
don’t worry about the scale of your
sketch.
Bit-mapped
image
Once the sketch was completed,
I saved it as a jpeg file, cropped,
scaled, and brought it into CAD
as a bit-mapped Image. I assigned
it a separate layer and used it it
as an underlay to create
a network of curves.
To help me create and edit
curves, I like to zoom-in and
pull on my control points until
I have a network of smooth curves
that align with my underlay sketch.
Once your curves have been
completed and joined, you may
remove the bit-mapped sketch
underlay and proceed in CAD.
Now that all my curves have been
created for my design, I am now ready
to revolve and create my part.
I simply select my joined curve,
follow the command line and click on
the end points, located at the axis
of rotation, and…
Voila! A successful revolved
model. The next step is to
shade the model and rotate
it to inspect the surfaces
and proportions
My shaded model can be
split, rendered, and saved
as a low-res image that
can be used for further
concept sketch development
Using a low-res (72 dpi) image of my
rendered design, I can go back into
Alias Sketchbook Pro2 and sketch-edit
details and features. This allows me to
sketch freely, while working in correct
proportions.
Having had time to sketch
Freely And develop features,
I can now Focus on modeling
my modifications While maintaining a smooth workflow
Between a 2D sketching and
3D CAD design application.
Original
Sketch created
In Alias
Sketchbook Pro2
Here’s the final design!
Thank You!
Digital
Concept
Sketching
By David Lee, IDSA
Industrial Design Department
Pasadena City College
October 27, 2005
Copyright 2005 David Lee Design