Introduction to computer graphics with Java | Razsoft Education

  •  Introduction to computer graphics 
  • Graphics with Java 

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Computer graphics an introduction | Razsoft education

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Computer graphics or CG Definition: Computer graphics is a field of computer science in which we study the creation and manipulation of images.   Computer graphics is an art of communicating to computer visually. Application: Movies: -  In movies they use VFX to create many scene like large explosion, plane crash or create entirely new environment like in Avengers and avatar. Cartoons: -  It’s used to create fictional characters and animate them to make animation videos like Doremon, Tom and Jerry and Motu-Patlu.   Video games: -  Video game is industry completely based on computer graphics. It’s used to create environment, character and interaction with them. Some popular computer games are like Vice city, Temple run, PUBG, etc. Simulation: -  Using computer we can describe behavior of object’s in computer then simulate  them in virtual environment to see the effect. It’s also used to teach people about complex machine operation like p...
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"climits" Header file in c++ programming language | Razsoft Education

 <climits> header file climits is a header file borrowed from c programing language limit.h header file. The header file is used to know the maximum and minimum value an integer data type can hold. The header file is implemented in C++ in standard namespace.  Here is the explanation of Macros used in climits header file char type :     CHAR_BIT - The macro represent number of bit in a  character.     CHAR_MIN -  For the minimum value a char can hold.      CHAR_MAX -  For the maximum value a char can hold.        CHAR_MIN -  For the minimum value a char can hold.     S CHAR_MIN -  For the minimum value a signed char can hold.     S CHAR_MAX -  For the maximum value a char can hold.     UCHAR_MAX - For the minimum value of unsigned char. short type :     SHRT_MIN - For the minimum value a short can hold.      SHRT_MAX - For the maximu...
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What is structured programming paradigm | Razsoft education

 Structured programming                 Structured programming is a programming paradigm in which we use some predefine keywords to control the flow (branching) of the program. Unlike in procedural language we have goto keyword to control flow. In structured program we have for, while, do while if , else, these type of keywords to control the flow better and also have blocks to maintain the scope of the variable or to group a set of related code. These blocks are formed by curly braces ( { } ) in C++.
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Accessing device coordinates in java graphics | Razsoft Education

 Java 2D API defines three level of configuration information to encapsulate conversion information from user to device coordinate. 1. Graphics Environment class :- GraphicsEnvironment class describe the collection of rendering device visible to the java application on a platform. Rendering device include screens, printers and image buffers. It also include all the fonts available to the device.  2. Graphics Device class :- GraphicsDevice class describe all the possible rendering device on the graphics environment. Such as screens or printers. 3. Graphics Configuration class :- A GraphicsConfiguration class contains all the different types of configuration supported by the graphics device. For example let a screen may have two different configuration such as 720 * 480 or 1920 * 1080 pixel resolution. We can change it's configuration as we want. Or a screen may have different color mode such as 16-bit, 32 - bit or 256 bit color mode. All such information about a device is stor...
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Computer graphics with java an introduction | Razsoft Education

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               Graphics is a way to represent visual element in application. Java provided us rich set of methods and class through Java2D API to deal with the graphics in java platform and application. Using AWT methods to draw and manipulated GUI interface.                Java2D comes with rich set of function to manipulate images, text, font, color, etc. It has capability to draw basic geometric shapes and curves. Java media framework allows us to work with media files and create animations. Java media framework depends upon Java2D framework for rendering purposes.                For basic drawing operation every java AWT component which is visible to screen contains a reference to graphics object, which is an object of abstract class Graphics. It comes with many useful methods to draw eleme...
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What is C++? | Razsoft education

 What is C++ ?    C++ is a powerful high level computer programming language developed by Bjarne Stroustrup in 1979 at AT & T Bell’s lab . The language continue the legacy of C language to produce fast , efficient, reliable and portable code, But extended features for Object oriented programming and generic programming . So, programmers can write complex and large program easily but produce code as efficient as C does. 
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What is a Procedural programming paradigm | Razsoft Education

  Procedural programming :                As name suggest in procedural language we write procedures to get the result of given data. A program consists of data and algorithm, Algorithm is step by step procedures that work on data and give us the output. When we use a programming language to write down these step by step processes called procedural programming language. ALGOL, BASIC, COBOL and C are the example of procedural programming language.
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Coordinate system of java | Graphics2D coordinate system | Razsoft Education

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   As we all know java follows WORA(Write Once Run Anywhere) principle. So, in this process it may encounter many different size and type of output devices. To give the same user experience to users across all devices java manages two different coordinate system.     1. User space coordinate system    2. Device space coordinate system 1. User space coordinate system :- It's a device independent coordinate system also called logical coordinate system. Which is used by developers to draw and set elements in application. It's relative to the application. In java to do all the graphical drawing we use this coordinate system.            In user space top left corner is 0,0 position. The x- coordinate goes horizontally from left to right, and y-coordinate moves from top to bottom. And a point is defined by first x - coordinate followed by y- coordinate.  2. Device space coordinate system :- It's a device depend...
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Drawing shapes using java graphics API | Razsoft Education

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Shapes in java  To draw shape in java, It provides shape interface. Any class that implement the shape interface will be used to draw shapes. To draw shapes we need to pass object of the class which implements the shape interface in the draw() of fill() method of graphics object. Outline of shape is known as path.      Java has already a list of class that implement the Shape interface to draw some basic geometrical shapes. Which is defined in to two main category Rectangular shape and non Rectangular shape. We can also implement shape interface in our own class to create custom shapes.   Rectangular Shape  Rectangular shapes are those shape which Extends the RectangularShape class. The class doesn't define any geometrical shape but it provide a rectangular frame to all the class that extend it. Here is list of some class that extends the RectengularShape class                      ...
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Java 2D Rendering Pipeline | Rendering in java | Razsoft Education

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What is Rendering?                      When we draw anything on screen, it involves many step by step process to calculate where and how to produce each pixel on screen, These step by step process is known as Rendering Pipeline and process is known as Rendering .      In this process we first define our basic shapes also known as primitives(such as text, image and geometric shapes). Then these primitives' as passed to a rendering engine like Graphics2D, That perform the step by step process of rendering pipeline. Then output image is given to an output device like screen, printer or an image stored in memory.  Apart from rendering engine Graphics2D also work as a surface to draw primitives on it. Each time we draw a new primitive on surface it added on the surface. Which we can draw on a output device.  Graphics2D States :-  Graphics2D work as a state machine to draw the primitives. It...
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