Processing Forum

Tweak mode not working on Mac and Windows

[3 Replies]
- 24-Sep-2013 08:13 PM
- Forum: Integration and Hardware
Hi everyone,

I saw the new tweak mode today and wanted to play with it. But it doesn't work on both my Windows and Mac machine. I am using Processing 2.0.3 and have the latest Java Run Time on both platform.

When I ran a sketch in the tweak mode, the code in PDE will underline the hard coded value and I can drag the arrow left or right on the number and see the number change. But the sketch does not update.

Anyone else has seen this problem as well?

Thanks,

Frank

How to make sure 3D light does not affect UI text?

[2 Replies]
- 31-May-2013 03:48 PM
- Forum: Core Library Questions
Hi everyone,

I am new to Processing and I was playing with 3D rendering in processing. I have a ball move around following the mouse. The scene is lit by a point light. I have some text on the screen that shows the position of the ball in the space. But the texts are affected by the point light as well. I was wondering is there a way to exclude the texts from the lighting?

Below is my code.

Thank you for your help in advance.

3d_ball.pde

------------------------------------------

Walk w1 = new Walk();

float mouseZ = 0.0;

PFont font;

void setup() {

size(800, 320, OPENGL);

smooth();



noStroke();

fill(255);

font = createFont("SegoeWP", 14);

textFont(font);

textAlign(LEFT);



//pointLight(255, 244, 178, width/2, height/2, 10);

}

void draw() {

background(50);

pointLight(255, 244, 178, width/2, height/2, 100);



if(mousePressed) {

mouseZ -= 1;

} else {

mouseZ = 0;

}

text("x: " + mouseX, 10, 20);

text("y: " + mouseY, 10, 40);

text("z: " + mouseZ, 10, 60);



w1.update(mouseZ);

}

--------------------------------------------------

Walk.pde

---------------------------------------------------

class Walk {

float x, y, z;

float speedX, speedY, speedZ;



Walk() {

x = width/2;

y = height/2;

z = 0.0;



speedX = 0.0;

speedY = 0.0;

speedZ = 0.0;

}



Walk(float x, float y) {

x = width/2;

y = height/2;

z = 0.0;



speedX = 0.0;

speedY = 0.0;

speedZ = 0.0;

}



void step(float mz) {

float distanceX = mouseX - x;

float distanceY = mouseY - y;

float distanceZ = mz - z;



speedX = distanceX/10;

speedY = distanceY/10;

speedZ = distanceZ/10;



x += speedX;

y += speedY;

z += speedZ;

}



void update(float mz) {

step(mz);

pushMatrix();

translate(x, y, z);

sphere(20);

popMatrix();

}

}

--------------------------------------------

How to find the exact xml file path of a RSS feed

[3 Replies]
- 13-Jul-2012 11:42 AM
- Forum: General Discussion
Hi everyone,

I am learning processing and am working on a RSS reader project. I am following Till Nagel's tutorial over here ( http://tillnagel.com/2009/09/processing-rss-feeds/). Everything works fine. When I try to use the same code on other RSS feed, the first problem I ran into is how to find the exact .xml file path of a RSS feed. For example, the processing website feed link takes me to this link - http://feed.processing.org/. So are most of the RSS feeds of other websites. Can someone who is experienced in this area help?

Thanks,

Frank

Got an error message when tried to export code to ProcessingJS

[5 Replies]
- 13-Nov-2011 02:19 PM
- Forum: General Discussion
Hi everyone,

I was wondering whether anyone else have run into this issue as I have recently. I am using Processing 2.0a4 with the latest version of Export as ProcessingJS tool.

I used a very simple sample code to test whether the tool works properly. The code is as below.

void setup() {

size(300, 300);

background(40);

}

I saved it and fired the Export as Processing.js tool. The text area in the PDE then spit out the following error message. I tried the tool with Processing 1.5.1 as well and got the same error message which made me think that the issue is caused by the processing.js file included in the tool. Is there anybody else who has run into the same issue can help?

Thank you for your time in advance.

-Frank

//----------------The error message start below--------------------------

org.mozilla.javascript.EcmaError: TypeError: Cannot set property head that has only a getter. (processing.js#31)

Exception in thread "AWT-EventQueue-0" org.mozilla.javascript.EcmaError: ReferenceError: "Processing" is not defined. (<inline de.bezier.tools.export.PJSConverterEnvironment>#1)

at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3654)

at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3632)

at org.mozilla.javascript.ScriptRuntime.notFoundError(ScriptRuntime.java:3717)

at org.mozilla.javascript.ScriptRuntime.name(ScriptRuntime.java:1692)

at org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.java:3410)

at script(<inline de.bezier.tools.export.PJSConverterEnvironment>:1)

at org.mozilla.javascript.Interpreter.interpret(Interpreter.java:2487)

at org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:164)

at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:398)

at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3065)

at org.mozilla.javascript.InterpretedFunction.exec(InterpretedFunction.java:175)

at org.mozilla.javascript.Context.evaluateString(Context.java:1104)

at de.bezier.tools.export.ProcessingJSConverter.convert(Unknown Source)

at de.bezier.tools.export.ProcessingJS.exportApplet(Unknown Source)

at de.bezier.tools.export.ProcessingJS.run(Unknown Source)

at processing.app.contrib.ToolContribution.run(ToolContribution.java:227)

at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)

at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:677)

at java.awt.EventQueue.access$000(EventQueue.java:85)

at java.awt.EventQueue$1.run(EventQueue.java:638)

at java.awt.EventQueue$1.run(EventQueue.java:636)

at java.security.AccessController.doPrivileged(Native Method)

at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:647)

at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)

at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

Does Picking library support 2d line picking?

[3 Replies]
- 04-Oct-2010 11:22 PM
- Forum: Contributed Library Questions
I an really new to processing. Try to create a program that highlights a line when the mouse is moved over it. I downloaded the picking library from here: http://code.google.com/p/processing-picking-library/

I looked at the demos which show how it works in 3D and I modified the code to 2d circle and it works too. When I changed the circle to a line it doesn't work any more. Any help is appreciated.

Below is the code I modified based on the demo.

------------------------------------

import picking.*;

Picker picker;

void setup() {

  size(200, 200);

  smooth();

  picker = new Picker(this);



  stroke(255);

}

void draw() {

  background(50);



  picker.start(0);

  line(0, 0, width, height);

  picker.stop();



  int id = picker.get(mouseX, mouseY);

  switch (id) {

   case -1:

   stroke(255);

   break;

   case 0:

   stroke(255, 150, 150);

   break;

   default:

   stroke(120);

   break;

  }

}

Activity Trend