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I will also provide exercises for you to complete on your own at the end of the module. The exercises will concentrate on the material that you have learnedin this module and previous modules.

Discussion and sample code

Much of the code in the library remains unchanged. I explained that code in the previous module and I won't repeat that explanation in this module. Rather,in this module, I will concentrate on explaining the modifications that I made to the library.

The game-programming library named GM2D02

A complete listing of the modified game-programming library named GM2D02 is provided in Listing 26 .

This library is an update of the earlier game-math library named GM2D01 . This update added the following new capabilities:

  • Draw circles to represent GM2D02.Point objects.
  • Draw visible lines to represent GM2D02.Line objects.
  • Draw visible lines and circles to represent GM2D02.Vector objects.
  • Call a setData method to change the values in a GM2D02.ColMatrix object.
  • Call a setData method to change the values in a GM2D02.Point object.
  • Call a setData method to change the values in a GM2D02.Vector object.
  • Call a setHead method or a setTail method to change one of the points that defines a GM2D02.Line object.

Constructors were updated to ensure that existing points, vectors, and lines are not corrupted by using the new set methods to change the values in the ColMatrix and/or Point objects originally used to construct the points, vectors, and lines. The updated constructors create and saveclones of the ColMatrix and/or Point objects originally used to define the Point , Vector , and/or Line objects.

I will explain the new code in the library in conjunction with the explanations of the programs named PointLine03 and PointLine04 .

The program named PointLine03

A complete listing of the program named PointLine03 is provided in Listing 27 .

This program illustrates the use of draw methods that were added to the GM2D02 game-math library to produce visual manifestations of Point , Line , and Vector objects instantiated from classes in the game-math library. The program also illustrates drawing on off-screenimages and then copying those images to a Canvas object in an overridden paint method.

As mentioned earlier, this program produces the screen output shown in Figure 1 .

Beginning of the class named PointLine03 and the class named GUI

Listing 1 shows the beginning of the class named PointLine03 (including the main method) and the beginning of the class named GUI .

Listing 1 . Beginning of the class named PointLine03 and the class named GUI.
class PointLine03{ public static void main(String[]args){ GUI guiObj = new GUI();}//end main }//end controlling class PointLine03//======================================================// class GUI extends JFrame{//Specify the horizontal and vertical size of a JFrame // object.int hSize = 400; int vSize = 200;Image osiA;//one off-screen image Image osiB;//another off-screen imageint osiWidth;//off-screen image width int osiHeight;//off-screen image heightMyCanvas myCanvas;//a subclass of Canvas

Questions & Answers

can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
is it 3×y ?
Joan Reply
J, combine like terms 7x-4y
Bridget Reply
im not good at math so would this help me
Rachael Reply
yes
Asali
I'm not good at math so would you help me
Samantha
what is the problem that i will help you to self with?
Asali
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Game 2302 - mathematical applications for game development. OpenStax CNX. Jan 09, 2016 Download for free at https://legacy.cnx.org/content/col11450/1.33
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