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LiveCode Mobile Development Beginner's Guide (2nd Edition)

You're reading from   LiveCode Mobile Development Beginner's Guide (2nd Edition) Create interactive mobile apps for Android and iOS with LiveCode

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Product type Paperback
Published in May 2015
Publisher
ISBN-13 9781849699655
Length 256 pages
Edition 1st Edition
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Authors (2):
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Colin Holgate Colin Holgate
Author Profile Icon Colin Holgate
Colin Holgate
Joel W Gerdeen Joel W Gerdeen
Author Profile Icon Joel W Gerdeen
Joel W Gerdeen
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Toc

Table of Contents (10) Chapters Close

Preface 1. LiveCode Fundamentals FREE CHAPTER 2. Getting Started with LiveCode Mobile 3. Building User Interfaces 4. Using Remote Data and Media 5. Making a Jigsaw Puzzle Application 6. Making a Reminder Application 7. Deploying to Your Device A. Extending LiveCode Index

Image data format

In other authoring tools, such as Adobe Director and Adobe Flash, bitmap data is stored as a matrix of 24-bit or 32-bit values. If you want to know the color of the 20th pixel from the left edge in the 15th row from the top of the image, you would have to use a getPixel function with these numbers filled in. In Flash, which uses a zero starting point for all its variable types, you would have to write the following code:

pixelcolor = bitmapvariable.getPixel(19,14);

You would in fact have to start this line with var pixelcolor:uint, but here we're looking at the main differences and not the oddities of having a strongly typed programming language! In Director, which like LiveCode uses 1 based variables, you would have to write the following code:

pixelcolor = imagevariable.getPixel(20,15)

Again, there's no need for variable typing or even a semicolon at the end of the line. While we digress, Flash too, doesn't need the semicolon at the end or at least, you don...

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