# 1.3 Game 2302-0110: updating the game math library for graphics  (Page 10/20)

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Listing 12 . Draw six lines connecting the vertices of the hexagon.
```GM2D02.Line line01 = new GM2D02.Line(point0,point1); GM2D02.Line line12 = new GM2D02.Line(point1,point2);GM2D02.Line line23 = new GM2D02.Line(point2,point3); GM2D02.Line line34 = new GM2D02.Line(point3,point4);GM2D02.Line line45 = new GM2D02.Line(point4,point5); GM2D02.Line line50 = new GM2D02.Line(point5,point0);//Now draw a visual manifestation of each line // on g2Da.line01.draw(g2Da); line12.draw(g2Da);line23.draw(g2Da); line34.draw(g2Da);line45.draw(g2Da); line50.draw(g2Da);```

Then Listing 12 calls the draw method belonging to the GM2D02.Line class six times in succession to cause visible lines to be rendered on the specified off-screen image. You can see those sixlines in the left image in Figure 1 .

That completes the drawing that is performed on the off-screen image shown in the left image in Figure 1 . Next I will explain the drawing that is performed on the off-screen image that is shown as the right image in Figure 1 .

Instantiate three objects of type GM2D02.Vector

According to Kjell, "A vector is a geometrical object that has two properties: length and direction ." He also tells us, "A vector does not have a position."

The right image in Figure 1 shows visual manifestations of three differentobjects of the GM2D02.Vector class. One vector is represented as a red line with a small red circle at its head. A second vector isrepresented as a blue line with a small blue circle at its head. The third vector is shown in three different positions represented by green lines withsmall green circles at their heads.

Listing 13 instantiates three objects of the GM2D02.Vector class, which are visually represented by the red, green, and blue lines in Figure 1 . References to these three objects are saved in the variables named vecA , vecB , and vecC in Listing 13 .

Listing 13 . Instantiate three objects of type GM2D02.Vector.
```GM2D02.Vector vecA = new GM2D02.Vector( new GM2D02.ColMatrix(50,100));GM2D02.Vector vecB = new GM2D02.Vector( new GM2D02.ColMatrix(75,25));GM2D02.Vector vecC = new GM2D02.Vector( new GM2D02.ColMatrix(125,125));```

Note that each vector is described by two values in a GM2D02.ColMatrix object.

Call the draw method to draw the vector

Listing 14 begins by setting the drawing color to red for the off-screen image on which the visual manifestation of the first Vector object will be drawn. Then Listing 14 calls the draw method of the GM2D02.Vector class to cause the object referred to by vecA to be represented as a (red) line with its tail at the origin. (Unlike the image on the left side of Figure 1 , the origin for the image on the right was not translated to the center.)

Listing 14 . Call the draw method to draw the vector.
```g2Db.setColor(Color.RED);vecA.draw(g2Db,new GM2D02.Point( new GM2D02.ColMatrix(0,0)));```

Note that two parameter are passed to the draw method in Listing 14:

• A reference to the off-screen graphics context on which the visual manifestation of the vector will be drawn.
• A new object of the class GM2D02.Point that will be used to determine the position on the off-screen image in which the visualmanifestation will appear.

where we get a research paper on Nano chemistry....?
what are the products of Nano chemistry?
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
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
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
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
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?
what is a peer
What is meant by 'nano scale'?
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 ?
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?
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
why we need to study biomolecules, molecular biology in nanotechnology?
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
why?
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
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