Transcript Modeling with Shapes and Splines

Creating Basic
2D Geometry
James Martin High School
Computer Multimedia and Animation
Instructor: G. Patton
From: CHAPTER 4 – 3DS MAX AND ITS APPLICATIONS
1. What is a 3ds Max shape?
A 3ds max shape is a 2D spline object.
Shapes are used to create 3D objects, and
they can be used as paths for lofting or
movement.
2. What are the settings in the Interpolation
rollout used for?
The settings in the Interpolation rollout
determine how a spline object is created by
specifying the number of steps between
vertices.
3. How is a spline object made so it can be
rendered?
Splines are set to be rendered by checking
the Renderable check box in the Rendering
rollout.
4. A line is made up of one or more
_____________ or ___________segments.
A line is made up of one or more straight
or curved segments.
5. What is the purpose of the Start New Shape
check box?
The Start New Shape check box enables
you to draw a new shape as a separate
object from the current shape.
6. What do the settings in the Initial Type and
Drag Type area of the Creation Method
rollout determine when drawing a line?
The settings in the Initial Type area specify
the type of vertices created with single pick
points.
The settings in the Drag Type area specify
the type of vertices drawn when points are
dragged.
7. What types of corners can a rectangle have?
A rectangle can have square and rounded
corners
8. When creating a circle, the settings in the
Creation Method rollout apply only when
using the _________.
When creating a circle, the settings in the
Creation Method rollout apply only when
using the cursor.
9. The two radio buttons in the Creation
Method rollout for an arc are _______ and
_______.
The two radio buttons in the Creation
Method rollout for an arc are End-EndMiddle and Center-End-End.
10. An ellipse is a closed circular spline with
______ and ______ axes.
An ellipse is a closed circular spline with
major and minor axes.
11. If the Pie Slice check box is checked, a
line is drawn from each endpoint of an arc
to _______.
If the Pie Slice check box is checked, a
line is drawn from each endpoint of an are
to the center.
12. What is the least number of sides a Ngon
must have?
three
13. How does a circumscribed Ngon fit the
imaginary circle defined by the Radius:
spinner value?
outside
14. What does a donut create when lofted or
extruded?
tube
15. What is the least number and most number
of points a star can have?
3, 100
16. Which points on a star can be filleted?
outer and inner
17. What type of spline is a helix?
spiral-shaped
18. How does the value -1.0 in the Bias:
spinner force the coils of a helix?
toward the start of the helix
19. Splines can be created from text using
what types of fonts?
Type 1 PostScript, TrueType
20. On what basis can a spline be generated
from a section?
cross sections of other objects