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119
votes
1answer
22k views

Mathematica Minecraft

Some time ago I asked myself: with all these great graphics and interactive capabilities of Mathematica, what kinds of 3D games can be implemented in it? And the answer which came to mind is ...
20
votes
3answers
741 views

Detecting KeyUp events

Is there a way to detect when a key is released, similar to EventHandler[InputField[], {"KeyDown", "k"} :> Print["k pressed"]] It seems such detection isn't ...
16
votes
0answers
464 views

How to improve these WASD + mouse look 3D controls?

Insipred by this question and the corresponding answer I've written a code for full-screen exploration of 3D scenes using standard WASD and mouse look controls. Here it is. ...
9
votes
1answer
254 views

EventHandler not working within DateListPlot (?)

I have some {date, value} data: data = Transpose[{AbsoluteTime /@ Thread[{2012, Range[12], 15}], RandomInteger[10, 12]}] ...
7
votes
3answers
595 views

Hovering mouse cursor over a plot to display a “corresponding” point in another plot

(Apologies for not having gotten around to responding to and accepting answers on my other recent questions—as a meticulous and thorough type, I'd like to take my time to fully comprehend and ...
6
votes
2answers
136 views

Why the Mouse dragging response not as smooth as Locator

I am experimenting to use MouseDragged eventhandler to change the vertices positions of a triangle, it works, but not as smooth as using Locators. Is this the ...
6
votes
1answer
114 views

How to handle keyboard events for unselected item in CDF?

How can I force the keyboard input to work for this cell without clicking on it after I evaluate or showing a blinking selection cursor? This is for running CDF games in a browser. ...
6
votes
1answer
143 views

Different actions with dragging and clicking points in same graphic

On a graphic (in this example a simple plot), I need two points to move when I drag with the mouse, and these points must move to location {1,1} when I click on them. This is how I got it to work, ...
5
votes
2answers
128 views

Generating EventHandler using Table

I would like to change the edge color of a graph when double clicking on it, the following code works: ...
5
votes
1answer
273 views

Evaluation order control

This question is related to Evaluation order of Button[]'s action Concusion was, Button[]'s actions are evaluated in preemptive link so "the code that needs ...
4
votes
2answers
159 views

Capturing an F1

I teach an Intro to Mathematica course, and one of the things I try to reinforce early on is just how helpful Mathematica's help is. In the very first lab for the course, I even give the students a ...
4
votes
2answers
235 views

Detecting changes of variables' values

Is it possible to detect (and create a trigger for) an event when any of the variables defined in the notebook changes its value (for any reason)? I need to know which variable got changed and what ...
4
votes
1answer
152 views

Detect a graphic primitive inside a Graphic

Please excuse me if that question is too basic but I couldn't find anything in the documentation or on here. If you consider the following Graphic I would like to ...
4
votes
1answer
78 views

Throttle EventHandler KeyReleased

What might be the most elegant way to throttle the a,s functions triggered by an ...
3
votes
2answers
159 views

EventHandler and Refresh rate

Based on the example of the Documentation of MousePosition, Properties and Relations, here is my test code using "MouseDragged" instead of "MouseClicked": ...
3
votes
2answers
125 views

Using MousePosition on the entire screen - Screencast with Linux

In order to record animations more easily while using Mathematica on Linux, I would need to know how to get the position of three clicks. The following picture (main part generated by ...
3
votes
4answers
132 views

EventHandler Not Detecting KeyDown

I am trying to use EventHandler to detect KeyDown within a LocatorPane. Anytime I press a key inside the LocatorPane the proper action is not executed (doesn't matter which key I choose) but rather ...
3
votes
1answer
112 views

In a DynamicModule, is it possible to use multiple EventHandler declarations? [duplicate]

Possible Duplicate: Wrapping EventHandler by Table I am running Mathematica 7. However, I am new to using Dynamic, ...
3
votes
2answers
125 views

Circumnavigate a curve (part 2)

I got help from Kuba on a previous post regarding this issue I'm having but after integrating that solution into my code, the problem changed and I am left with something I don't know much about (even ...
3
votes
1answer
173 views

Creating event handler with ImplementJavaInterface inside a package

I am trying to make my Mathematica function to serve as an event handler for the events generated by a Java object. Specifically, I have a Java object that connects as a client to a server that ...
3
votes
1answer
231 views

Problem with dynamic MouseAppearance updating while “MouseDown”

my problem is with combining EventHandler and MouseAppearance. I want to change cursor appearance if I have primary button ...
3
votes
1answer
138 views

How can I improve my Zooming code?

I recently started to work with the EventHandler function to make it possible to Zoom, Pan, etc, with only the use of a mouse. I have found a way to zoom that is ...
3
votes
0answers
130 views

Is it possible to model the piano key attack?

My purpose is to model the attack of a piano key. As the key is pressed a sound must be emitted. When the key is released the sound must stop with decreasing volume. I have a partial success when ...
2
votes
3answers
242 views

Changing the Actions in EventHandler

I would like to be able to change which action specified events take depending on some condition. For example, I have established a SetterBar ...
2
votes
1answer
239 views

Dynamically updating interactive objects in Mathematica

Is it possible to create interactive code in Mathematica (via EventHandler[] or Manipulate[] perhaps) that continually updates some calculation based on external data in the time when no user input is ...
2
votes
1answer
151 views

Change the behaviour of a LocatorPane

Normally, LocatorPane detects any single click as in the following example: ...
2
votes
1answer
234 views

DynamicModule with Plots and EventHandler

I am making a little animation in Mathematica, along the lines of some of the Wolfram demo projects. I'd like to animate a simulated trajectory of a random process (say a Poisson process), and while ...
2
votes
1answer
144 views

Detecting change of a variable (detect mouse clicks)

I want to do something when the mouse is clicked. But it shouldn't matter where the mouse is clicked, so I can't use EventHandler. Instead, I'm trying to do it like ...
2
votes
1answer
134 views

Delay of events detection dependent of “MouseDown” position

Let's say we have a Rectangle with color which depends of CurrentValue["MouseOver"]: ...
1
vote
1answer
108 views

How to preserve focus on InputField after Print?

If you press Enter in the example below it should become clear that test is being adding to the textbox instead of the current ...
1
vote
1answer
77 views

How to combine manipulate and eventhandler

I combine manipulate and eventhandler, now I can change the controller when working on eventhandler, but how to change the value in eventhandler when I control the manipulate controller? ...
1
vote
1answer
125 views

BindEvent binding own function

I need to change property of window when button gets pressed. There are pretty enough examples on Wolfram's website, but all they bind predefined function "Print[]" and I have no problems with ...
1
vote
1answer
121 views

Can't see updating performed by NMinimize[…,StepMonitor->(…)] outside of Button in which it's called [duplicate]

I've made a peak-fitting GUI in which I have a "Fit" button that, when pressed, calls NMinimize[...,StepMonitor->(step++)] to minimize a sum of squared ...
1
vote
1answer
249 views

EventHandler {“MouseDown”, 1} with PassEventsDown -> True not working as expected

I want my EventHandler to respond only to left mouse clicks and pass the right mouse click to the built in event handler. I have tried ...
1
vote
1answer
113 views

Extract Graphics properties using EventHandler

One can find primitives' properties such as the radius, the center or the color of a Disk using Cases by using: ...
1
vote
1answer
70 views

InputField Insertion Point Movement

I am trying to make the Return Key move the insertion point to the end of the input field's text. Please see the example below for the problem I am facing. Namely, when the return key is pressed, the ...
1
vote
1answer
35 views

Using Loop to create mutiple EventHandlers

I have a problem, that is I want to use loop to create multiple EventHandlers, but my code shows nothing. What can I do? ...
1
vote
0answers
78 views

Strange behavior of my vertex eventhandler!

I have two level EventHandler. The inner one is made of vertex of Graph and the other outer one is of the Dynamic Graph. (1) If I select a arbitray place on the Graph except a vertex, then every ...
0
votes
1answer
75 views

Using variable with delay in WhenEvents in NDSolve

I have a system of differential equations which is solved correctly. However, I want to trigger two events, one of which depends on the "time elapsed" after of the first event trigger. Is it possible ...
0
votes
2answers
94 views

What is wrong with combining two programs with event handlers?

I can delete the unwanted nodes of a RandomGraph by double-clicking on them from the first program, and I can change the positions of the nodes by dragging them ...
0
votes
0answers
41 views

How to set suitable View* for Graphics3D [duplicate]

My codes and result as following. There is an people object in 2D view. You can move the people object in 2D view, the direction of the arrow is the direction that the people see. You can use the ...
0
votes
0answers
66 views

Help to plot Poincare section for a system of delay differential equations

I'am trying to plot Poincare section for a 4-dimentional system of Delay differential equations. I don't know how to specify initial conditions. Can I use each of the code in the following ? Also how ...
0
votes
0answers
217 views

Is it possible to create an event handler for changes in values of variables?

I am creating a networking application in Mathematica that runs a non-stop simulation, and periodically receives new information from the remote server that affects the simulation. Whenever values ...
-1
votes
2answers
112 views

EventHandler and ActionMenu

Here is the bit of code causing me issues: ...