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Recall also that if you plan to export your sketch in JavaScript mode or to export your sketch as a stand-alone application, you must use literal values asthe parameters to the size method.

You should set the height of the display window to be at least 70 pixels greater than the height of the image to allow roomto display the width, height, and pixel information below the image as shown in Image 4 . Otherwise, the black text will be printed on the image and may not be visible, depending on the color of theimage.

If you don't know the size of your image, simply make a guess. You will either get an output that displays the size of the image, as in Image 2 and Image 3 , or you will get an output that shows the image as in Image 1 and Image 4 . In either case, the width and height of the image will be displayed and you can use this information to update the call tothe size method and recompile the sketch.

Set the font

The only other thing that is new in Listing 2 is the call to the createFont method.

This statement is required to prepare the sketch to draw the text characters on the display window as shown in Image 1 . I will leave it as an exercise for the student to study the documentation for the createFont method in whatever depth is necessary to understand it.

The draw method

The draw method is shown in its entirety in Listing 3 . As you can see, all the duties of the draw method were delegated to the run method belonging to an object of the class named Pr0120aRunner .

Listing 3. the draw method.

void draw(){ obj.run();}//end draw
Listing 3. The draw method.

You might be wondering why I didn't simply write that code in the draw method. The reason is that I frequently provide my students with input and output images (such as Image 1 and Image 4 ) along with the driver code in Listing 10 . It is then the students responsibility to design and write the code in Listing 11 .

In other words, I provide a driver class along with the input and output images. It is the student's responsibility todesign and write a class that will run in conjunction with the driver class to transform the input image into the output image.

The class named Pr0120aRunner

Beginning of the class

The class named Pr0120aRunner begins in Listing 4 .

Listing 4 also shows the beginning of the method named run that is called by the draw method in Listing 3 .

Listing 4. beginning of the class named pr0120arunner.

class Pr0120aRunner{void run(){ background(255);//whitetextFont(font,16);//Set the font size, and colorfill(0);//black textloadPixels();//required img.loadPixels();//requiredfloat reD,greeN,bluE;//store color values hereint ctr = 0;//output pixel array counter
Listing 4. Beginning of the class named Pr0120aRunner.

The run method begins by setting the background of the display window to white, and then takes care of some more housekeeping details regarding fonts.

Daniel Shiffman tells us about the requirement to use the loadPixels method and the updatePixels method in his tutorial titled Images and Pixels . I will leave it as an exercise for the student to study and understand that material.

Finally, Listing 4 declares some local variables that will be used later.

Check for size problems

The code in Listing 5 checks to confirm that the image will fit in the display window. If not, one of the messages shown in Image 2 and Image 3 is displayed in place of the image.

Questions & Answers

Income elasticity of demand
Shaan Reply
what is labour force
ademu Reply
Labour force is the number of people who are actively and presently working in a country to increase the availability of goods and services.
Mbye
It refers to the active population available for work at a going rate.
Daniel
labour force is the number of people who are active and present working in a country to increase the availability of goods and services
Deborah
The law of diminishing returns States that "all other things being equal as more and more of a variable factor(labour) is employed on a fixed factor (Land) ,marginal product initially increases reaches a maximum and there after diminishes or fall
samuel Reply
how does exceptional demand occur
Esther Reply
It occurs, due to certain reasons, but to make my answers brief. Exceptional demand occurs when our earnings change. As the law of demand says the higher the price the lower the demand. However no matter how high the price is the person will still purchase the good due to his level of income.
Mbye
opportunity cost definitions
Surur
What do you mean mean by opportunity cost definition?
Mbye
OK thanks for the answer
Esther
Opportunity cost, means, in order to get something, you sacrifice something
Taha
Opportunity cost simply means, sacrificing one commodity at the expense of another.
Mbye
A production manager should continue to use inputs until the Marginal Product (MP) reaches at zero. Justify this statement.
Newtan
What is the scale of preference
Mbye
Esther👌
TSEKO
The law of diminishing returns
Mbye
Apply, PoE, Process of elimination, the 1st stage of production is not correct for the producer to produce because he has the option to increase his production level, so, eliminate that. In third stage, its not rational to produce because, Total output declines. Hence, it is only in the second
Taha
Stage, that the producer produces, also because, it is at this stage that the total output is maximum.
Taha
Hence proved
Taha
A production manager should continue to use inputs until the Marginal Product (MP) reaches at zero. Justify this statement.
Newtan
plz help
Newtan
thanks
Surur
deference b/n aggregate demand and aggregate supply
Surur
ok a production manager should continue to use it inputs until MP reaches zero because at that stage it is called rational stage. And at this stage when a producer produce anything he/she will get more output, aside that too the Total product (TP) will also be at it maximum.
samuel
Exceptional demand occurs due to demand conditions, and when it does not obey the law of demand.
samuel
e
mukul
A production manager should continue to use inputs until the Marginal Product (MP) reaches at zero. Justify this statement.
Newtan Reply
anyone help me Please
Newtan
does the richest experience scarcity?
elan Reply
how do you master a subject
elan
Yes, this is due to the fact that human wants are unlimited in number how ever he has everything his heart desires, he still have dreams of owning/having something else of a great value.
Tusajigwe
that's true,thank you tusajigwe
elan
why firm maximize profits when MC=MR
Abel Reply
The night before an economic exam you decide to go for outing instead of staying at home and studying for your exam.you get 50 percent on your exam as compared with the 70 percent that you normally score.
Muhammad Reply
join me
Abel
why do banks charge fees and charges?
Shirley Reply
What is Labour
Angela Reply
the service provide by the labourer is termed as labour.
Prtj
Meaning of Standard of living
Fazrat Reply
pls what is the meaning of opportunity cost
Fazrat Reply
the cost of next forgone alternative is called opportunity cost. for example you have two choices, either work or study and you choose to study then the opportunity cost for study is the earnings which you can earn while opting job.
Prtj
so what if I choose work it is the same as study
Fazrat
if you choose to work, then the cost of study is the opportunity cost for work
Prtj
ohk tnx
Fazrat
welcome. much love .
Prtj
Hi
Frank
hi Frank
Prtj
what is production
Frank
the output made by firm or companies are called production. however production can be of tengible goods or it can be of intengible.
Prtj
Thanks
Frank
welcome Frank.
Prtj
how can inflation be defined
Mboko Reply
rise in general price level is called inflation.
Fardin
when the price of goods and services rise, the cost of living also increases. basically the increase in general price level is call inflation
Khushtar
when demand increase and supply decrease .leads to fall of quality and volume index's leads to inflation .
Khaja
inflation is a monitry policy that leads to continues increase in price of commodity in a geographical location with some period of time
Osola
why firm maximize profits when MC=MR
Abel
inflation can be define as the persistent increase in price of a commodity
Joseph
what is economic
Enock Reply
economics is a science under which we study all those human activities which is related to scarcity with unlimited wants. By proff. Robbins .
Vibhu
it is a social science
ashiru
what is the difference between macro economic and micro economic
Bubu
Economic is a social science which studies human behaviour in relation to ends and scares means which have alternative uses
Nana
Economic is a social science that studies individuals, busnisses,governments, and deal deal with the entire society as a scarcity.
Mo
what is the differences between ends and wants?
Richard
Economics is a social science which studies human behavior in relationship to ends and scares means which have alternative uses
Musu
what is the differences between ends and scarce
Albert
Ends is considered as goals,aims, objectives,want among others whereas scarce is the insufficient of resources to satisfy the needs of individual,firm,and state
Suzana
Economic is a science which study human behavior as a relationship between ends and scarce means which has alternative uses
Suzana
macroeconomics is the study of the economy as a whole while microeconomics is the study of individual consumers and business film.
nicholas
Economic is a social science which studies human behavior in relation to ends and scares means which have scares means which have alternative uses.
Awuah
what is the indicator of economics development
Bibu Reply
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Source:  OpenStax, The processing programming environment. OpenStax CNX. Feb 26, 2013 Download for free at http://cnx.org/content/col11492/1.5
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