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playing with JSON example a bit

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Daniel Shiffman
2013-04-07 22:03:28 -04:00
parent 3bb5f8f940
commit 3a663e3c08
3 changed files with 86 additions and 100 deletions
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180
java/examples/Topics/Advanced Data/LoadSaveJSON/LoadSaveJSON.pde
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@@ -8,34 +8,32 @@
*
* Here is what the JSON looks like (partial):
*
{
"bubbles": {
"bubble": [
{
"position": {
"x": 160,
"y": 103
},
"diameter": 43.19838,
"label": "Happy"
},
{
"position": {
"x": 121,
"y": 179
},
"diameter": 44.758068,
"label": "Melancholy"
}
]
}
}
{
"bubbles": [
{
"position": {
"x": 160,
"y": 103
},
"diameter": 43.19838,
"label": "Happy"
},
{
"position": {
"x": 372,
"y": 137
},
"diameter": 52.42526,
"label": "Sad"
}
]
}
*/
// An Array of Bubble objects
Bubble[] bubbles;
// A Table object
JSONArray json;
// A JSON object
JSONObject json;
void setup() {
size(640, 360);
@@ -45,88 +43,78 @@ void setup() {
void draw() {
background(255);
// Display all bubbles
// for (Bubble b : bubbles) {
// b.display();
// b.rollover(mouseX, mouseY);
// }
//
// textAlign(LEFT);
// fill(0);
// text("Click to add bubbles.", 10, height-10);
for (Bubble b : bubbles) {
b.display();
b.rollover(mouseX, mouseY);
}
//
// textAlign(LEFT);
// fill(0);
// text("Click to add bubbles.", 10, height-10);
}
void loadData() {
// Load JSON file
String jsonString = join(loadStrings("data.json"),"\n");
String jsonString = join(loadStrings("data.json"), "\n");
//println(jsonString);
json = JSONArray.parse(jsonString);
println(json);
// Get all the child nodes named "bubble"
// XML[] children = xml.getChildren("bubble");
//
// // The size of the array of Bubble objects is determined by the total XML elements named "bubble"
// bubbles = new Bubble[children.length];
//
// for (int i = 0; i < bubbles.length; i++) {
//
// // The position element has two attributes: x and y
// XML positionElement = children[i].getChild("position");
// // Note how with attributes we can get an integer or float directly
// float x = positionElement.getInt("x");
// float y = positionElement.getInt("y");
//
// // The diameter is the content of the child named "diamater"
// XML diameterElement = children[i].getChild("diameter");
// // Note how with the content of an XML node, we retrieve as a String and then convert
// float diameter = float(diameterElement.getContent());
//
// // The label is the content of the child named "label"
// XML labelElement = children[i].getChild("label");
// String label = labelElement.getContent();
//
// // Make a Bubble object out of the data read
// bubbles[i] = new Bubble(x, y, diameter, label);
// }
json = JSONObject.parse(jsonString);
println(json);
JSONArray bubbleData = json.getJSONArray("bubbles");
// The size of the array of Bubble objects is determined by the total XML elements named "bubble"
bubbles = new Bubble[bubbleData.size()];
for (int i = 0; i < bubbleData.size(); i++) {
/*JSONObject bubble = bubbleData.getJSONObject(i);
JSONObject position = bubble.getJSONObject("position");
int x = position.getInt("x");
int y = position.getInt("y");
float diameter = (float)bubble.getDouble("diameter");
String label = bubble.getString("label");
bubbles[i] = new Bubble(x, y, diameter, label);*/
}
}
// Still need to work on adding and deleting
void mousePressed() {
// Create a new XML bubble element
// XML bubble = xml.addChild("bubble");
//
// // Set the poisition element
// XML position = bubble.addChild("position");
// // Here we can set attributes as integers directly
// position.setInt("x",mouseX);
// position.setInt("y",mouseY);
//
// // Set the diameter element
// XML diameter = bubble.addChild("diameter");
// // Here for a node's content, we have to convert to a String
// diameter.setContent("" + random(40,80));
//
// // Set a label
// XML label = bubble.addChild("label");
// label.setContent("New label");
//
//
// // Here we are removing the oldest bubble if there are more than 10
// XML[] children = xml.getChildren("bubble");
// // If the XML file has more than 10 bubble elements
// if (children.length > 10) {
// // Delete the first one
// xml.removeChild(children[0]);
// }
//
// // Save a new XML file
// saveXML(xml,"data/data.xml");
//
// // reload the new data
// loadData();
// XML bubble = xml.addChild("bubble");
//
// // Set the poisition element
// XML position = bubble.addChild("position");
// // Here we can set attributes as integers directly
// position.setInt("x",mouseX);
// position.setInt("y",mouseY);
//
// // Set the diameter element
// XML diameter = bubble.addChild("diameter");
// // Here for a node's content, we have to convert to a String
// diameter.setContent("" + random(40,80));
//
// // Set a label
// XML label = bubble.addChild("label");
// label.setContent("New label");
//
//
// // Here we are removing the oldest bubble if there are more than 10
// XML[] children = xml.getChildren("bubble");
// // If the XML file has more than 10 bubble elements
// if (children.length > 10) {
// // Delete the first one
// xml.removeChild(children[0]);
// }
//
// // Save a new XML file
// saveXML(xml,"data/data.xml");
//
// // reload the new data
// loadData();
}

4
java/examples/Topics/Advanced Data/LoadSaveJSON/data/data.json
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@@ -1,6 +1,5 @@
{
"bubbles": {
"bubble": [
"bubbles": [
{
"position": {
"x": 160,
@@ -34,5 +33,4 @@
"label": "Melancholy"
}
]
}
}