<< Chapter < Page Chapter >> Page >

The end of the darkenBackground method

Listing 7 signals the end of the processing loop and the end of the darkenBackground method.

Apply a red tint to the skater

Returning to where we left off in the run method in Listing 4 , the code in Listing 8 calls a method named redTint , passing a reference to the picture that contains a cropped image of the skater. The method applies a red tint to theskater.

Listing 8 - Apply a red tint to the skater.

The redTint method assumes that the image being processed has a pure green background like that shown in Figure 1 . The method applies an algorithm very similar to that shown in Listing 7 to apply a red tint to every pixel that is not pure green.

Because of the similarity of the code in the redTint method and the code in Listing 7 , a detailed explanation of the redTint method should not be required. You can view the method in its entirety in Listing 10 near the end of the module.

The skater with the red tint applied

If you were to display the picture referred to by skater immediately after the redTint method returns in Listing 8 , you would see the image shown in Figure 7 .

Figure 7 - The skater with a red tint applied.

The ice skater with a red tint applied.

Compare Figure 7 with Figure 1

You can see the effect of applying the red tint process to the skater by comparing Figure 7 with Figure 1 . Note that the process does not change the color of the green pixels.

The remainder of the run method

Continuing with the run method, Listing 9 calls a method named greenScreenDraw to draw the cropped, red-tinted skater on the snow scene as shown in Figure 4 .

Listing 9 - The remainder of the run method.
//Draw the skater on the snowScene. greenScreenDraw(skater,snowScene,0,0);//Display students name on the final output and // display it.snowScene.addMessage("Display your name here.",10,15); snowScene.explore();System.out.println(snowScene); }//end run method

Behavior of the method

The greenScreenDraw method copies all non-green pixels from a source image to a destination image at a specified location. This method is verysimilar to methods that I have explained in earlier modules. Therefore, an explanation of the method in this module should not be needed.

You can view the greenScreenDraw method in its entirety in Listing 10 near the end of the module.

Add text and display the final output image

When the greenScreenDraw method returns, Listing 9 calls the addMessage method to display the student's name on the snow scene and then calls the explore method to produce the output image shown in Figure 4 . None of that should be new to you at this point.

Display text and return

Finally, Listing 9 displays some information on the command line screen as shown in Figure 5 and returns control to the main method in Listing 1 .

Terminate the program

Having nothing more to do, the main method terminates, causing the program to terminate and return control to the operating system.

Run the program

I encourage you to copy the code from Listing 10 . Compile the code and execute it. Experiment with the code, making changes, and observing the resultsof your changes. Make certain that you can explain why your changes behave as they do.

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
yes that's correct
I think
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
analytical skills graphene is prepared to kill any type viruses .
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!

Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Object-oriented programming (oop) with java' conversation and receive update notifications?