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-# scratch-blobs
-Blobs of Wrath
+# scratch-paint
+#### Scratch paint provides a React component which is a vector paint editor. It is very much still under construction!
+
+### Installation
+This requires you to have Git and Node.js installed.
+
+In your own node environment/application:
+```bash
+npm install https://github.com/LLK/scratch-paint.git
+```
+If you want to edit/play yourself:
+```bash
+git clone https://github.com/LLK/scratch-paint.git
+cd scratch-paint
+npm install
+```
+
+## Playground
+This requires Node.js to be installed.
+
+Run the paint editor independent of Scratch by running the development server.
+Open a Command Prompt or Terminal in the repository and run:
+```bash
+npm start
+```
+
+Then go to [http://localhost:8078/playground/](http://localhost:8078/playground/). 8078 is BLOB upside-down.
+
+Code for the playground is in `scratch-paint/src/playground/playground.jsx`. You can change the SVG vector that is passed in, and `onUpdateSvg`, which is called with the new SVG each time the vector drawing is edited.
+
+## How to include in a Node.js App
+For an example, check out the `scratch-paint/src/playground` directory.
+
+In the component:
+```
+import PaintEditor from 'scratch-paint';
+...
+<PaintEditor
+    svg={optionalSvg}
+    rotationCenterX={optionalCenterPointXRelativeToSvg}
+    rotationCenterY={optionalCenterPointYRelativeToSvg}
+    onUpdateSvg={handleUpdateSvgFunction}
+/>
+```
+
+In the top-level combineReducers function:
+```
+import {ScratchPaintReducer} from 'scratch-paint';
+...
+combineReducers({
+	...
+    scratchPaint: ScratchPaintReducer
+});
+```
+Note that scratch-paint expects its state to be in `state.scratchPaint` so the name must be exact.
+
+Scratch paint shares state with its parent component because it expects to share the parent's IntlProvider, which inserts translations into the state. See the intlProvider setup in `scratch-gui` [here](https://github.com/LLK/scratch-gui/blob/f017ed72201bf63334dced161441ef6f154b1c74/src/lib/app-state-hoc.jsx).
+
+## Testing
+```bash
+npm run test
+```
+
+Just unit tests:
+```bash
+npm run unit
+```
+
+Individual unit test: (from `scratch-paint` directory)
+```bash
+./node_modules/.bin/jest ./test/unit/undo-reducer.test.js
+```
+
+## Publishing to GitHub Pages
+```bash
+npm run deploy
+```
+
+This will push the currently built playground to the gh-pages branch of the
+currently tracked remote.  If you would like to change where to push to, add
+a repo url argument:
+```bash
+npm run deploy -- -r <your repo url>
+```
+
+## Donate
+We provide [Scratch](https://scratch.mit.edu) free of charge, and want to keep it that way! Please consider making a [donation](https://secure.donationpay.org/scratchfoundation/) to support our continued engineering, design, community, and resource development efforts. Donations of any size are appreciated. Thank you!
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