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###ASCIIKit is a powerful framwork to generate ASCII matrix on iOS.

How to install:

Drag ASCIIKit.xcodeproj into your project and add ASCIIKit.framework into Embedded Binaries and Linked frameworks and libraries

How to Use:

Original Image:
(from: https://d13yacurqjgara.cloudfront.net/users/60266/screenshots/1974826/open-uri20150316-11-vz33qe_1x)

Generate ASCII single character colorful matrix:

testImage.ASCIIGenerateColorfulMatrixWithSingleCharacter("#", pixelsPerSymbol: 2) { (attributedString) -> Void in
    let image = attributedString.generateImage()
}

Generate ASCII single character grey scale matrix:

testImage.ASCIIGenerateGrayScaleMatrixWithSingleCharacter("#", pixelsPerSymbol: 2) { (attributedString) -> Void in
    let image = attributedString.generateImage()
}

Generate ASCII multi character grey scale matrix:

testImage.ASCIIGenerateGrayScaleMatrixWithMultipleCharacter(pixelsPerSymbol: 2) { (attributedString) -> Void in
    let image = attributedString.generateImage()
}

The calculation is done Asynchoriously with CoreGraphics.

See more detail in the demo project~.