Forcelayout is an Android library for visualizing data. You can drawing graph with spring-like attractive forces.

Demo

Usage

Usage in kotlin

1. Gradle

repositories {
    jcenter()
}

dependencies {
    compile 'jp.kai:forcelayout:1.1.0'
}

2. Definitions of nodes

val nodes = ArrayList <Pair<String,Int>>()
nodes.add(Pair("nodeName1", R.drawable.example1))
nodes.add(Pair("nodeName2", R.drawable.example2))
nodes.add(Pair("nodeName3", R.drawable.example3))

or

val nodes: Nodes = Nodes()
nodes.add(NodePair("nodeName1", R.drawable.example1))
nodes.add(NodePair("nodeName2", R.drawable.example2))
nodes.add(NodePair("nodeName3", R.drawable.example3))

If you don't use image. You can just write node name.

val nodes: Array<String> = arrayOf( "nodeName1", "nodeName2", "nodeName3")

3. Definitions of links

val links = Arrays.asList("nodeName1-nodeName2", "nodeName1-nodeName3")

or

val links: Links = Links()
links.add(LinkPair("nodeName1", "nodeName2"))
links.add(LinkPair("nodeName1", "nodeName3"))

4. Set node and link style (optional)

val forcelayout = Forcelayout(applicationContext)

forcelayout.node()
    .size(100)
    .style(Color.argb(100,200,30,50))

forcelayout.link()
    .style(Color.argb(60,50,30,200), 5.0f)

5. Set nodes and links

You can set node's size and link-strength, and so on. Please use anko if you write in kotlin.

val forcelayout = Forcelayout(applicationContext) 

forcelayout.with(this)
    .size(200)
    .distance(200)
    .gravity(0.04)
    .friction(0.04)
    .nodes(nodes)
    .links(links)
    .start()

Params	Description
size	To set image width.
distance	To set distance between each nodes.
gravity	To set gravitation.
friction	To set gravitation between pair of nodes.
nodes	To set nodes that contain node name and image.
links	To set pairs that contain node names.

Thanks

Inspired by force layout in D3.js.

License

---

Copyright 2016 kai0masanari

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.