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trying a JSON example, but not getting very far yet · jasperboyd/processing@5d984b1 · GitHub

  1. jasperboyd
  2. processing

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Commit 5d984b1

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shiffman
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trying a JSON example, but not getting very far yet
1 parent b322d28 commit 5d984b1

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‎java/examples/Topics/Advanced Data/LoadSaveJSON/Bubble.pde‎

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// A Bubble class
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class Bubble {
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float x,y;
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float diameter;
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String name;
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boolean over = false;
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// Create the Bubble
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Bubble(float x_, float y_, float diameter_, String s) {
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x = x_;
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y = y_;
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diameter = diameter_;
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name = s;
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}
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// CHecking if mouse is over the Bubble
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void rollover(float px, float py) {
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float d = dist(px,py,x,y);
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if (d < diameter/2) {
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over = true;
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} else {
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over = false;
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}
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}
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// Display the Bubble
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void display() {
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stroke(0);
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strokeWeight(2);
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noFill();
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ellipse(x,y,diameter,diameter);
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if (over) {
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fill(0);
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textAlign(CENTER);
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text(name,x,y+diameter/2+20);
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}
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}
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}

‎java/examples/Topics/Advanced Data/LoadSaveJSON/LoadSaveJSON.pde‎

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/**
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* Loading XML Data
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* by Daniel Shiffman.
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*
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* This example demonstrates how to use loadJSON()
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* to retrieve data from a JSON file and make objects
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* from that data.
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*
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* Here is what the JSON looks like (partial):
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*
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{
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"bubbles": {
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"bubble": [
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{
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"position": {
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"x": 160,
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"y": 103
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},
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"diameter": 43.19838,
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"label": "Happy"
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},
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{
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"position": {
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"x": 121,
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"y": 179
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},
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"diameter": 44.758068,
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"label": "Melancholy"
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}
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]
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}
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}
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*/
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// An Array of Bubble objects
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Bubble[] bubbles;
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// A Table object
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JSONArray json;
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void setup() {
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size(640, 360);
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loadData();
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}
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void draw() {
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background(255);
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// Display all bubbles
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// for (Bubble b : bubbles) {
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// b.display();
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// b.rollover(mouseX, mouseY);
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// }
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//
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// textAlign(LEFT);
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// fill(0);
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// text("Click to add bubbles.", 10, height-10);
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}
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void loadData() {
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// Load JSON file
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String jsonString = join(loadStrings("data.json"),"\n");
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//println(jsonString);
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json = JSONArray.parse(jsonString);
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println(json);
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// Get all the child nodes named "bubble"
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// XML[] children = xml.getChildren("bubble");
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//
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// // The size of the array of Bubble objects is determined by the total XML elements named "bubble"
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// bubbles = new Bubble[children.length];
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//
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// for (int i = 0; i < bubbles.length; i++) {
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//
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// // The position element has two attributes: x and y
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// XML positionElement = children[i].getChild("position");
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// // Note how with attributes we can get an integer or float directly
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// float x = positionElement.getInt("x");
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// float y = positionElement.getInt("y");
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//
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// // The diameter is the content of the child named "diamater"
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// XML diameterElement = children[i].getChild("diameter");
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// // Note how with the content of an XML node, we retrieve as a String and then convert
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// float diameter = float(diameterElement.getContent());
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//
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// // The label is the content of the child named "label"
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// XML labelElement = children[i].getChild("label");
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// String label = labelElement.getContent();
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//
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// // Make a Bubble object out of the data read
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// bubbles[i] = new Bubble(x, y, diameter, label);
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// }
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}
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// Still need to work on adding and deleting
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void mousePressed() {
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// Create a new XML bubble element
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// XML bubble = xml.addChild("bubble");
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//
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// // Set the poisition element
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// XML position = bubble.addChild("position");
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// // Here we can set attributes as integers directly
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// position.setInt("x",mouseX);
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// position.setInt("y",mouseY);
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//
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// // Set the diameter element
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// XML diameter = bubble.addChild("diameter");
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// // Here for a node's content, we have to convert to a String
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// diameter.setContent("" + random(40,80));
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//
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// // Set a label
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// XML label = bubble.addChild("label");
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// label.setContent("New label");
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//
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//
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// // Here we are removing the oldest bubble if there are more than 10
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// XML[] children = xml.getChildren("bubble");
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// // If the XML file has more than 10 bubble elements
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// if (children.length > 10) {
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// // Delete the first one
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// xml.removeChild(children[0]);
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// }
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//
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// // Save a new XML file
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// saveXML(xml,"data/data.xml");
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//
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// // reload the new data
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// loadData();
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}
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‎java/examples/Topics/Advanced Data/LoadSaveJSON/data/data.json‎

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{
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"bubbles": {
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"bubble": [
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{
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"position": {
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"x": 160,
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"y": 103
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},
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"diameter": 43.19838,
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"label": "Happy"
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},
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{
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"position": {
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"x": 372,
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"y": 137
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},
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"diameter": 52.42526,
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"label": "Sad"
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},
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{
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"position": {
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"x": 273,
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"y": 235
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},
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"diameter": 61.14072,
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"label": "Joyous"
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},
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{
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"position": {
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"x": 121,
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"y": 179
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},
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"diameter": 44.758068,
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"label": "Melancholy"
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}
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]
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}
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}

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