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The UFO image

The UFO image is shown in Figure 2 . Note the green background. All of the green pixels in the UFO image will be replaced by transparent black pixels whenthe program runs. I took advantage of the Color Key transparency feature by setting the properties for the UFO image as shown in Figure 1 .

Figure 2 . The UFO image.

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Image of the planet

Figure 3 shows a reduced view of the image showing the planet that I used as a background image.

Figure 3 . Reduced version of the alien planet image.

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The version that I used in the program was 640 pixels wide and 480 pixels high. However, that is too large to publish comfortably in this narrow publication format,so I reduced the image in Figure 3 to 450x338 for publication purposes only. The source code that you will see later is based on an image size of 640x480.

The screen output

Figure 4 through Figure 12 show nine screen shots taken while the animation was running.

In Figure 4 , the UFO is approaching the planet from some distance away. Note that the green portion of the UFO image has become transparent. Also note the sizeof the planet and its moon for comparison with subsequent screen shots.

Figure 4 . The UFO approaching the planet from some distance away.

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Flying a relatively straight path

In Figure 5 through Figure 7 , the UFO continues along a relatively straight path flying over the planet and getting closer to the surface of the planet all thetime. Note how the planet increases in size from one image to the next, giving the illusion that the UFO is getting closer to the surface of the planet.

The background is moving

Note also that the position of the UFO in the game window is not changing. Instead an illusion of motion is created by causing the background to change.This is a technique that was used for many years in the movies to create the illusion that actors were in a car driving along the highway when in fact, thecar was standing still inside a studio. The image of the stationary car was superimposed on a moving background image.

Figure 5 . Flying over the planet.

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Figure 6 . Flying over the planet.

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Figure 7 . Flying over the planet.

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Preparing to change course

In Figure 8 , the UFO has gone about as far as it is going to go along the original course. It is preparing to change course and come back towards thecamera getting ever closer to the surface of the planet.

Figure 8 . Preparing to change course.

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Flying towards the camera

In Figure 9 and Figure 10 , the UFO has changed course. It is now flying towards the camera very close to the surface of the planet. You can even see some surfacefeatures on the planet (due to the distortion that is produced when a bitmap image is enlarged).

Figure 9 . Flying towards the camera very close to the surface of the planet.

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Figure 10 . Still flying towards the camera very close to the surface of the planet.

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In Figure 11 , the UFO is almost touching the rings around the planet.

Figure 11 . Almost touching the rings around the planet.

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Heading for home

In Figure 12 , the UFO leaves the planet and heads for home. Shortly after this, the program will reset and repeat the animation sequence.

Questions & Answers

How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
in a comparison of the stages of meiosis to the stage of mitosis, which stages are unique to meiosis and which stages have the same event in botg meiosis and mitosis
Leah Reply
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Source:  OpenStax, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
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