<< Chapter < Page
  Digital signal processing - dsp     Page 22 / 24
Chapter >> Page >

The color palette

Before getting into the details of the class, I will explain the color palette. The color palette is produced by a method named getColorPalette , shown in its entirety in Listing 26 . This is a utility method that is called by the inner classes named CanvasType2surface and CanvasType2scale .

Listing 26. The method named getColorPalette.
Color[] getColorPalette(){//Note that the following is an initialized // 1D array of type Color.Color[] colorPalette = {Color.BLACK,// 0, 0, 0 Color.GRAY,// 128,128,128Color.LIGHT_GRAY,// 192,192,192 Color.BLUE,// 0, 0,255new Color(100,100,255),//100,100,255 new Color(140,140,255),//140,140,255new Color(175,175,255),//175,175,255 Color.CYAN,// 0,255,255new Color(140,255,255),//140,255,255 Color.GREEN,// 0,255, 0new Color(140,255,140),//140,255,140 new Color(200,255,200),//200,255,200Color.PINK,// 255,175,175 new Color(255,140,255),//255,140,255Color.MAGENTA,// 255, 0,255 new Color(255,0,140), //255, 0,140Color.RED,// 255, 0, 0 new Color(255,100,0),// 255,100, 0Color.ORANGE,// 255,200, 0 new Color(255,225,0),// 255,225, 0Color.YELLOW,// 255,255, 0 new Color(255,255,150),//255,255,150Color.WHITE};// 255,255,255return colorPalette; }//end getColorPalette

The getcolorpalette method

The purpose of this method is to establish a color palette containing references to Color objects representing 23 distinct colors and shades of gray. The references are stored in a one-dimensional array object aselement type Color . The values shown in comments in Listing 26 represent the values of red, green, and blue required to produce that specificcolor.

As you can see, some of the elements in the array refer to Color objects defined as named constants (public final variables) in the Color class. Other elements in the array refer to Color objects that are instantiated using red, green, and blue color values of my ownchoosing. The actual colors represented by these objects, going from top to bottom, match the colors shown in the calibration scale for the rightmost imagein Figure 1 .

Rearrange and add new colors

If you would like to do so, you can rearrange the colors in the array. This will result in different colors being adjacent to one another in the calibrationscale. Also if you would like to do so, you can remove colors from the array or add new colors of your own choosing to the array. The overridden paint methodsin the classes named CanvasType2surface and CanvasType2scale are designed to take such changes into account.

The CanvasType2surface class

You can view the entire class named CanvasType2surface in Listing 29 near the end of the module. Because of the similarity of this class to others that I have previously discussed, I will limit my discussion to theportions of the overridden paint method that distinguish this class from the others.

Questions & Answers

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 to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
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, Digital signal processing - dsp. OpenStax CNX. Jan 06, 2016 Download for free at https://legacy.cnx.org/content/col11642/1.38
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Digital signal processing - dsp' conversation and receive update notifications?