Book Image

Building Impressive Presentations with impress.js

Book Image

Building Impressive Presentations with impress.js

Overview of this book

Everyone has had to present during their lifetime. We've all spent agonizing hours trying to make those PowerPoint presentations engaging. Well now there is a tool that will make those presentations look like child's play. Impress.js is a powerful library that eases the task of creating presentations with smooth animations without depending on a software tool. You are no longer limited to desktop tools as these presentations run on any supported browser anywhere on the Internet. "Building Impressive Presentations with impress.js" is a quick guide to creating professional presentations using the best aspects of CSS3. It will also guide you through several practical examples which go beyond the conventional slide-based presentations, covering each aspect of the Impress library. From simple presentations to your own personal website this handy practical guide will ensure you get the most out of Impress.JS as quickly as you can. Starting with a simple slide-based presentation we move quickly on adding in sliders, galleries and portfolios to utilize this amazing tool. 3D transitions, rotations, scaling, and transforms are also covered to give your presentations that something extra. The final step is bringing all this together to create a personal website that is viewable on all impress supported browsers. "Building Impressive Presentations with impress.js" gives you the chance to stand out from the competition and engage with audiences in a way you never have before.
Table of Contents (14 chapters)
Building Impressive Presentations with impress.js
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Data perspective


We have covered all the main effects of impress.js in the previous sections. Finally, we'll take a look at how we can use the data-perspective attribute with impress.js presentations. Perspective determines the distance between you and the z=0 plane. The following is the definition given on CSS perspective by Mozilla.org:

The perspective CSS property determines the distance between the z=0 plane and the user in order to give to the 3D-positioned element some perspective. Each 3D element that is placed between the z=0 and the user is enlarged, each 3D-element with z<0 is shrinked. How much deformation is defined by the value of this property.

As per the definition, the perspective attribute will only affect elements in 3D space. impress.js uses 1000 as the default value for the data-perspective attribute. You can define higher or lower values to increase or decrease the distance. Let's look at our rotation example in different perspective values to get an idea on how it...