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Add example of Deep Zoom output

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Clean up preinstall and prereqs docs
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Lovell Fuller 2015-03-12 17:33:06 +00:00
parent 9b5229f2dd
commit 33ca86e4f2
1 changed files with 12 additions and 10 deletions
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22
README.md
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@ -38,7 +38,6 @@ This module is powered by the blazingly fast [libvips](https://github.com/jcupit
* Node.js v0.10+ or io.js
* [libvips](https://github.com/jcupitt/libvips) v7.40.0+ (7.42.0+ recommended)
* C++11 compatible compiler such as gcc 4.6+ or clang 3.0+
* [OpenSlide](http://openslide.org/) 3.4.0+ for reading OpenSlide images (optional)
To install the most suitable version of libvips on the following Operating Systems:
@ -64,16 +63,12 @@ or run the following as `root`:
curl -s https://raw.githubusercontent.com/lovell/sharp/master/preinstall.sh | bash -
To enable OpenSlide, add the --with-openslide argument:
> curl -s https://raw.githubusercontent.com/lovell/sharp/master/preinstall.sh | sudo bash -s -- --with-openslide
or run the following as `root`:
curl -s https://raw.githubusercontent.com/lovell/sharp/master/preinstall.sh | bash -s -- --with-openslide
The [preinstall.sh](https://github.com/lovell/sharp/blob/master/preinstall.sh) script requires `curl` and `pkg-config`.
Add `--with-openslide` to enable OpenSlide support:
curl -s https://raw.githubusercontent.com/lovell/sharp/master/preinstall.sh | sudo bash -s -- --with-openslide
### Mac OS tips
Manual install via homebrew:
@ -234,6 +229,13 @@ sharp(inputBuffer)
});
```
```javascript
sharp('input.tiff').tile(256).toFile('output.dzi', function(err, info) {
// The output.dzi file is the XML format Deep Zoom definition
// The output_files directory contains 256x256 pixel tiles grouped by zoom level
});
```
```javascript
// Runtime discovery of available formats
console.dir(sharp.format);
@ -293,7 +295,7 @@ Fast access to image metadata without decoding any compressed image data.
`callback`, if present, gets the arguments `(err, metadata)` where `metadata` has the attributes:
* `format`: Name of decoder to be used to decompress image data e.g. `jpeg`, `png`, `webp` (for file-based input additionally `tiff` and `magick`)
* `format`: Name of decoder to be used to decompress image data e.g. `jpeg`, `png`, `webp` (for file-based input additionally `tiff`, `magick` and `openslide`)
* `width`: Number of pixels wide
* `height`: Number of pixels high
* `space`: Name of colour space interpretation e.g. `srgb`, `rgb`, `scrgb`, `cmyk`, `lab`, `xyz`, `b-w` [...](https://github.com/jcupitt/libvips/blob/master/libvips/iofuncs/enumtypes.c#L522)