sensor - Get Forward, Backward left right sesnor android -

-

i have small project, in need detect movement of device ex: have mobile held on table if move device left "like moving pc mouse", need know if move right, need know if move forward, , backward need know

i searched , used many tutorials, tutorials gave me numbers changes lot when device not moved!! tried this

 if (event.sensor.gettype() == sensor.type_accelerometer){             mgravity = event.values.clone();             // shake detection             float x = mgravity[0];             float y = mgravity[1];             float z = mgravity[2];             maccellast = maccelcurrent;             maccelcurrent = (float)math.sqrt(x * x + y * y + z * z);             float delta = maccelcurrent - maccellast;             maccel = maccel * 0.9f + delta;             // make higher or lower according how             // motion want detect             if(maccel > 0.0005){                 ((textview)findviewbyid(r.id.xfield)).settext("x:" + string.valueof((x)));                 ((textview)findviewbyid(r.id.yfield)).settext("y:" + string.valueof((y)));                 ((textview)findviewbyid(r.id.zfield)).settext("z:" + string.valueof(z));             }         }

thanks

from android documentation:

measures acceleration force in m/s2 applied device on 3 physical axes (x, y, , z), including force of gravity.

i.e.accelerometer detects acceleration, not movement, not speed , not direction. in nutshell: if movement @ constant speed accelerometer show 0. need write algorithm parse speed and/or direction acceleration. involves lot of study physics , mathematics. in nutshell: integral of acceleration speed, second integral of acceleration direction. (of course more complex, give direction of start exploring).


Comments

Post a Comment

Popular posts from this blog

ios - UITEXTFIELD InputView Uipicker not working in swift -

-
hello trying pop uipickerview view programmatically when user clicks on textfield. have tried doesn't doing anything. isn't working. nothing happening when click textfield class userprofiletableviewcontroller: uitableviewcontroller,uitextfielddelegate,uipickerviewdelegate,uipickerviewdatasource { var itempicker: uipickerview! = uipickerview() @iboutlet weak var gendertxtfield: uitextfield! var gender = ["male","female"] override func viewdidload() { super.viewdidload() gendertxtfield.delegate = self itempicker!.delegate = self itempicker!.datasource = self itempicker!.backgroundcolor = uicolor.blackcolor() self.gendertxtfield.inputview = itempicker } func numberofcomponentsinpickerview(pickerview: uipickerview) -> int{ return 1 } // returns # of rows in each component.. func pickerview(pickerview: uipickerview, numberofrowsincomponent component:...
Read more

Hatching array of circles in AutoCAD using c# -

-
i beginner in autocad plugins .i have created array of circle using following code. now, have hatch circles in array .how that??how hatch circles @ once? moreover, how can return hatch method , use hatch objects.sorry language.thanks in advance. [assembly: commandclass(typeof(beamsection.class1))] namespace beamsection { public class class1 { //class1 obj = new class1(); [commandmethod("beamatsupport")] public void addlightweightpolyline() { // current document , database document acdoc = application.documentmanager.mdiactivedocument; database accurdb = acdoc.database; promptpointresult ppr = acdoc.editor.getpoint("\nselect starting point "); var ucs = acdoc.editor.currentusercoordinatesystem; point3d startingpt = ppr.value.transformby(ucs); list<double> radius = new list<double>(); radius.add(0.5); ...
Read more