PLT Final ReportAJYN Introduction and OverviewObject-Oriented Design:PositioningAdditional AJYN FeaturesAnimation:Ouputting to .swf FilesWriting an program in AJYNCompiling a source file in AJYNDevelopment ProcessWho did what?Project TimelineArchitecture Design:The BackendThe Backend Program was written in c++. It is a separate program from the front end and is called only after the front end's completion. Furthermore, because it is only dependent on the IR, it can easily be ported to work with another front end applicatiIntermediate Representation SpecificationsTest ProgramsType 2Type 3Jared KennedyNeel GoyalAnanya DasFront End files - Neel Goyal and Ananya DasBackend .cpp file - Written by Yaniv Schiller1 AJYN Programming Language: PLT Final Report Professor Stephen Edwards Group JAYN: Jared Kennedy Ananya Das Yaniv Schiller Neel Goyal May 13, 20032 Table of Contents: 1. Introduction……………………………………………………………………...…3 2. Language Tutorial………………………………………………………………….5 3. Language Manual…………………………………………………………………10 4. Project Plan………………………………………………………………………..17 5. Architectural Design………………………………………………………………19 6. Test Plan…………………………………………………………………………..23 7. Lessons Learned…………………………………………………………………..30 8. Appendix …………………………………………………………………………323 Introduction: AJYN Introduction and Overview For the past few years, certain companies have dominated the marketing in graphic animations. For years, Macromedia has been developing their Flash product, making them the market leader in easily distributed movie animations. These files are greatly complex and allow for all sorts of unique, easy to use animations. However, due to the complexity of the design, we find that Flash files are hard to develop. The Ajyn programming language will provide an easy to use Object-Oriented interface to allow for quick, comprehensive development of complex graphic designs and animations. Object-Oriented Design: It is important for our language to be object-oriented in application for ease of handling various graphics functions. By declaring each graphics primitive as a separate object, be it a square or an ellipse, the user can keep track of a single object throughout the code and transform or manipulate various graphics objects through the course of the program. Furthermore, by using object-oriented design, it is possible to group many lesser objects together to create a parent object composed of many primitives. For instance, if a user wants to create a snowman object and move it around the screen, this can be done easily by creating an object composed of three circle primitives and grouping them together based on either their relative or absolute positions into one object. If the design was not object-oriented, to move the snowman the user would need to keep track of the three independent circles through using nested loops or create a polygon resembling the shape of the snowman. Therefore, the main purpose of using object-oriented programming is to make and manipulate grouped graphics objects with ease. Positioning Objects are positioned based on an x-y scale which places the origin at the upper left corner of the window. Moving rightwards from this point increases the values on the x-direction and moving downwards from this point increases the values on the y-direction. AJYN Objects - ellipse - rectangle - point - line - polygon Animation techniques - translation - rotation - scaling - Additional AJYN Features - Grouping – various objects may be grouped together to form a single unit.4 - Hiding Objects – an object can be set as invisible for a specified number of frames. Animation: With the continuing growth of the internet and computer graphics, the popularity of animation is mounting. Computer animation can be found all over the world wide web, in computer games, and in many of the everyday programs we use. Companies such as Macromedia have created graphical programs which allow users to create complex animations. AJYN presents another approach to computer animation. The AJYN programming language allows users to program animations. One of the most valuable properties of AJYN is its easy to use animation techniques. AJYN’s object-oriented design can make complex animations relatively straightforward. Animation techniques include translations, rotations, and size adjustments. We may use one of these techniques alone. or we can combine techniques to perform more complex animations. Procedures In order to create an animated AJYN program, we must first decide which of the three animation techniques are necessary to employ. For example, suppose we wished to create a Ferris wheel. We would need to utilize the rotation technique. We begin by creating an ellipse to create the actual Ferris wheel. We then use the rotation transformation on our ellipse object. When using the rotation function, we are required to specify three elements of data: 1) the number of degrees of rotation, 2) the start frame at which the rotation should begin, 3) the stop frame at which the rotation should end. Ouputting to .swf Files In order to compile the actual animation file, AJYN uses an open source project knows as Ming. Ming, which is located on Sourceforge, replaced Macromedia in creating an open source API for swf files. Ming, written in C, comes with extensions for Java, PHP, and C++. The backed application of AJYN accepts a file containing the intermediate representation and then uses Ming to compile the actual animation file.5 Language Tutorial: Writing an program in AJYN AJYN is a very straightforward language with few commands to remember to create complete and colorful animations. Before getting into the syntax of the language, lets go over some basic things to remember while programming with AJYN. First, one begins a program by declaring a program name, screen size and number of animation frames. Then one declares the shape objects that are going to be used in the scene. Colors are specified by declaring a new color and all shapes
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