Many complicated movie scenes that you see involve lots of individually generated objects, all assembled together on one screen. A Pixar movie scene of a city (such as in The Incredibles) involves superimposing a number of buildings of different shapes and sizes. For this assignment, you will create a city landscape by drawing a number of buildings of varied sizes.
Create a directory named skyline to store your work,
then copy into it the Canvas class from the course directory. Create a
class called Building
to represent a building in a
landscape. Specifically, it should have the following methods:
public void setHeight(int h)
h
)public void setWidth(int w)
w
)public void setColor(Color col)
col
)public void setHorizontalLocation(int
loc)
public void draw(Canvas canvas, int
canvasHeight)
public void setHeightRandom(int maxHeight)
maxHeight
, inclusive)
public void setWidthRandom(int maxWidth)
maxWidth
, inclusive)public void setLocationRandom(int maxLoc)
maxLoc
,
inclusive)public void setColorRandom()
You should add on your own any private object variables that you need.
Draw your building by doing what you can to make a rectangle look building-like. Add an antenna to the top of the building whose height is proportional to the rest of the building. Add vertical lines running down or across the building, or perhaps add windows. (With the techniques that we have discussed so far, though, your windows will need to scale with the building. We'll eventually talk about techniques which would allow you to have different numbers of windows to scale with the height of the building, but we're not there yet.)
Test your code as you go along. In other words, create
another class called Skyline
that creates and draws some
buildings. As you write methods in Building
, test them in
Skyline
. When you are all done, test your code against
the Skyline.java that Dave Musicant
has kindly provided us. It uses a
few techniques that we haven't talked about yet, but feel free to take
a look. If you have built your Building
class correctly,
this Skyline
program should generate an impressive skyline
for you to look at.
When you're finished, use hsp to submit your skyline
directory. Don't forget to put your name (or names, if you work with a
partner) in the comments at the top of the program. Use
javadoc
comments at the top of your source file and above each method
in the Building
class. (We will discuss javadoc on Friday in class, but
in the meantime, you should read Appendix I of your book.)
Good luck, and have fun. Remember that lab assistants are available in the evenings in CMC 306 to help out if you need it.