TAILIEUCHUNG - Animation: SVG and SMIL Animation

The design and functionality of the timeline is the second major concept that sets GDHit apart from Wikipedia, , etc. Wikipedia as a research tool and online community has shown itself to be a successful model. However, the website lacks any form of design, aesthetics, and functionality beyond the most rudimentary grid layout, typographic hierarchy, and styled hyperlinks. It shall be termed the “No Aesthetic” aesthetic, for purposes of this paper. This can often be the case with many wiki and/or database-driven websites, as a result of the design becoming secondary to the technology powering the database. With GDHit, the. | In this chapter Basic Animations SVG As an Animation Grammar Basic Attributes of an Animation Applying SVG Animation to SVG Static Elements More Complex Animations SVG SMIL Animation and SMIL The animate Element The set Element The animateMotion Element The animateColor Element The animateTransform Element Rotation Using animateTransform Simple Sample Animations Basic Animations One of the most visually attractive aspects of SVG is its potential for animation. Most parts of an SVG image can be animated position onscreen width height color opacity stop colors in a gradient attributes of SVG filters. The visual effects are potentially legion. But before you get carried away or overwhelmed by the potential look at how SVG animation is done. SVG images can be animated by two methods the use of declarative SVG elements mostly using elements borrowed from SMIL Animation or the use of ECMAScript JavaScript or another scripting language to manipulate the Document Object Model DOM of an SVG image. The two methods can be combined into one image. This chapter focuses on declarative animation. In practice portraying in a book the visual appearances that SVG animation produces is difficult. Therefore I strongly encourage you to experiment with the SVG code provided and view these animations on your own computer. A number of the animations presented in this chapter are accessible online on the Web site http . 210 Designing SVG Web Graphics SVG As an Animation Grammar Animation is a time-based alteration in the characteristics of an image. During an SVG animation the SVG rendering engine maintains two copies of the value to be animated. One is the original value which is maintained in the DOM and the other is the presentation value the value that gives rise to the onscreen appearance during an animation. Before I discuss and show you working SVG animations I want to discuss the general way in which SVG animations are implemented and the various .

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