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This module contains review questions and answers keyed to the module titled Java3028: Clipping Images.

Revised: Mon Apr 04 10:44:15 CDT 2016

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Table of contents

Preface

This module contains review questions and answers keyed to the module titled Java3028: Clipping Images .

The questions and the answers are connected by hyperlinks to make it easy for you to navigate from the question to the answer and back again.

Questions

Question 1 .

Given the input image shown in Figure 1 , which of the following output images is produced by the code in Listing 1 ?

A. Figure 2

B. Figure 3

Listing 1 . Question 1.
/*File Java3028ra Copyright 2013 R.G.Baldwin *********************************************************/import java.awt.Graphics2D; import java.awt.geom.AffineTransform;import java.awt.geom.Rectangle2D; import java.awt.Graphics;import java.awt.geom.Ellipse2D; import java.awt.Color;public class Java3028ra{ public static void main(String[]args){ new Java3028raRunner().run();}//end main method }//end class Java3028ra//======================================================// class Java3028raRunner{public void run(){ Picture pix = new Picture("Prob04a.jpg");pix = rotatePicture(pix,35); pix = mirrorUpperQuads(pix);pix = mirrorHoriz(pix); pix = clipToEllipse(pix);pix.explore(); }//end run//----------------------------------------------------// private Picture clipToEllipse(Picture pix){Picture result = new Picture(pix.getWidth(),pix.getHeight());result.setAllPixelsToAColor(Color.RED); Graphics2D g2 = (Graphics2D)(result.getGraphics());Ellipse2D.Double ellipse = new Ellipse2D.Double(28,64,366,275);g2.setClip(ellipse); g2.drawImage(pix.getImage(),0,0,pix.getWidth(),pix.getHeight(), null);return result; }//end clipToEllipse//----------------------------------------------------//private Picture rotatePicture(Picture pix, double angle){AffineTransform rotateTransform = new AffineTransform();rotateTransform.rotate(Math.toRadians(angle), pix.getWidth()/2,pix.getHeight()/2); Rectangle2D rectangle2D =pix.getTransformEnclosingRect(rotateTransform); int resultWidth = (int)(rectangle2D.getWidth());int resultHeight = (int)(rectangle2D.getHeight()); AffineTransform translateTransform =new AffineTransform(); translateTransform.translate((resultWidth - pix.getWidth())/2, (resultHeight - pix.getHeight())/2);translateTransform.concatenate(rotateTransform); Picture result = new Picture(resultWidth,resultHeight); Graphics2D g2 = (Graphics2D)result.getGraphics();g2.drawImage(pix.getImage(),translateTransform,null); return result;}//end rotatePicture //----------------------------------------------------//private Picture mirrorUpperQuads(Picture pix){Pixel leftPixel = null; Pixel rightPixel = null;int midpoint = pix.getWidth()/2; int width = pix.getWidth();for(int row = 0;row<pix.getHeight()/2;row++){ for(int col = 0;col<midpoint;col++){ leftPixel = pix.getPixel(col,row);rightPixel = pix.getPixel(width-1-col,row); rightPixel.setColor(leftPixel.getColor());}//end inner loop }//end outer loopreturn pix; }//end mirrorUpperQuads//----------------------------------------------------// private Picture mirrorHoriz(Picture pix){Pixel topPixel = null; Pixel bottomPixel = null;int midpoint = pix.getHeight()/2; int height = pix.getHeight();for(int col = 0;col<pix.getWidth();col++){ for(int row = 0;row<midpoint;row++){ topPixel = pix.getPixel(col,row);bottomPixel = pix.getPixel(col,height-1-row); bottomPixel.setColor(topPixel.getColor());}//end inner loop }//end outer loopreturn pix; }//end mirrorHoriz//----------------------------------------------------// }//end class Java3028raRunner

Figure 1 - Prob04a.jpg

Input image to the program shown in Listing 1.

Figure 2 - Possible output image.

Possible output image from the program shown in Listing 1.

Figure 3 - Possible output image.

Possible output image from the program shown in Listing 1.

Answer 1

Figures

Listings

What is the meaning of the following two images?

This image was inserted here simply to insert some space between the questions and the answers to keep them from being visible on the screen at thesame time.

The image is also an example of the kinds of things that we do in my course titled ITSE 2321, Object-Oriented Programming.

Spacer image of a rabbit and a penguin.

This image was also inserted for the purpose of inserting space between the questions and the answers.

Spacer image of a penguin in the snow in front of some houses.

Answers

Answer 1

The code in Listing 1 produces the output image shown in Figure 3 .

Back to Question 1

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Java3028r Review
  • File: Java3028r.htm
  • Published: 02/18/13
Disclaimers:

Financial : Although the Connexions site makes it possible for you to download aPDF file for this module at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, youshould be aware that some of the HTML elements in this module may not translate well into PDF.

I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version ofthe module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale onAmazon.com showing me as the author. I neither receive compensation for those sales nor do I know who does receive compensation. If youpurchase such a book, please be aware that it is a copy of a module that is freely available on cnx.org and that it was made andpublished without my prior knowledge.

Affiliation : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.

-end-

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
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.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
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
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
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
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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
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