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Learn about using the draw, drawCentered, and drawFlash methods of the Image class.

Table of contents


This module is one in a collection of modules designed to teach you about the anatomy of a game engine.

Although the modules in this collection will concentrate on the Java game library named Slick2D, theconcepts involved and the knowledge that you will gain is applicable to different game engines written in different programming languages as well.

An earlier module titled A first look at Slick2D bitmap graphics introduced you to the use of bitmap graphics in Slick2D. The purpose of this module isdig a little deeper into the use of bitmap graphics

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I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view the imagesand listings while you are reading about them.


  • Figure 1 . Output from the program named Slick0160a.
  • Figure 2 . One output from the program named Slick0160b.
  • Figure 3 . Another output from the program named Slick0160b.



Bitmap graphics are used in a variety of ways in game and simulation programming. Therefore, I will present and explain two programs that digmore deeply into the use of bitmap graphics in Slick2D.

The program named Slick0160a

The first program named Slick0160a calls the draw method of the Image class several times in succession toillustrate some of the options available with the draw method. This program also illustrates flipping an image. The output from thisprogram is shown in Figure 1 .

Figure 1 . Output from the program named Slick0160a.
Missing image.

The program named Slick0160b

The second program named Slick0160b illustrates the use of the drawFlash method to draw an image in silhouette and to cause the silhouette to switchback and forth between two or more colors. The program draws several spiders in silhouette. It causes a large spider toflash back and forth between a white silhouette and a blue silhouette. A screen shot of the output from the program while the large spider is in its white state is shown in Figure 2 .

Figure 2 . One output from the program named Slick0160b.
Missing image.

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
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Crow Reply
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RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
yes that's correct
I think
what is the stm
Brian Reply
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industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
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what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
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Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
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
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
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Source:  OpenStax, Anatomy of a game engine. OpenStax CNX. Feb 07, 2013 Download for free at https://legacy.cnx.org/content/col11489/1.13
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