actionscript 3 - How to determine primary swipe direction (using MultiTouch) in AS3? -


i'm trying implement simple swipe recognition on touch screen using as3. need know whether swipe left, right, top, or bottom.

first question: easier using simple mouse_down , mouse_up, , calculate distance(s) moved?

or easier using multitouch?

i see code multitouch showing how implement swipe detection , getting direction thus:

        if (e.offsety == 1) {      //user swiped towards bottom     square_mc.y += 100;      }     if (e.offsety == -1) {      //user swiped towards top     square_mc.y -= 100;     }             if (e.offsetx == 1) {      //user swiped towards right     square_mc.x += 100;      }     if (e.offsetx == -1) {      //user swiped towards left     square_mc.x -= 100;     }

but if need resolve 1 direction (that left or up, right or bottom, etc), how do (and if offsetx , offsety true offsets, why checking +1 , -1 only? or function called during swipe? i'm trying 1 complete swipe).

i'm thinking skipping multitouch might simpler, welcome feedback. thanks!

you can answer own question(s) doing 2 things...

1 re-read tutorial code came from.. section headed "coding gesture" http://www.republicofcode.com/tutorials/flash/as3swipegesture/

2 experiment , learn observing results. example...

but if need resolve 1 direction (that left or.... how do that?

well what's wrong line in code provided if (e.offsetx == -1) { square_mc.x -= 100; }. did test it? did square_mc not move left 100 pixels when swiped towards left direction? if worked have "resolved" 1 direction, guess. can add other if statements other directions needed.


Comments

Post a Comment

Popular posts from this blog

Why does Ruby on Rails generate add a blank line to the end of a file? -

running rails generate controller foo home results in: class foocontroller < application controller def home end end (there's nothing on line in actual file, blank line) is there purpose blank line? it's common use newline indicate end of line, last line. many editors (like vi, use) add in newline silently. consensus text files (especially in unix world) should end in newline, , there have been problems historically if wasn't present. why should text files end newline? the tool used count lines in file "wc" counts newlines in file, without trailing newline show 3 instead of 4. it improves readability of templates used in generator. consider: https://github.com/rails/rails/blob/master/railties/lib/rails/generators/rails/controller/templates/controller.rb to remove trailing newline, template have last line of: end<% end -%> instead of: end <% end -%> that seems less readable me. the discussion below refers ...
Read more

node.js - Bad Request - node js ajax post -

i'm using express 3.0 , node v0.11.0. have button submits form , i'm using ajax post data json object node server. client code is: $('#contact').submit(function(e) { console.log('submit called'); var formdata = json.stringify($('form').serializeobject()); console.log(formdata); $.ajax({ url: "http://localhost:3000/savedata/", type: "post", datatype: 'json', data: {objectdata: formdata}, contenttype: "application/json", complete: function() { console.log('process complete'); }, success: function(data) { console.log('process sucess'); }, error: function() { console.log('process error'); }, }); return false; }); then on server: var express = require('express'); var app = express(); app.set('views', __dirname + '/views'); app.set('view engine', 'jade'); app.use(express.bodyparser());...
Read more

keyboard - Smiles and long press feature in Android -

i've created android keyboard. how add features inserting smilies, , using long keypresses display symbols? to create long-press behavior allows select several options pop-up menu, follow guide (specifically pop-up menu section): http://developer.android.com/guide/topics/ui/menus.html smileys (also known emoticons) combination of keys, understood programs , parsed same way. have do, when clicks smiley face on keyboard, simulate pressing of key combination matching emoticon. example, when clicks smiley, should simulate key presses ':' , ')' :). here's list of emoticons: http://en.wikipedia.org/wiki/list_of_emoticons
Read more