coordinates

I'm trying to come up with an iterative function that generates xyz coordinates for a hexagonal grid. With a starting hex position (say 0,0,0 for simplicity), I want to calculate the coordinates for each successive "ring" of hexagons, as illustrated here: So far, all I've managed to come up with is this (example in javascript): var radius = 3 var xyz = [0,0,0]; // for each ring for (var i = 0; i < radius; i++) { var tpRing = i*6; var tpVect = tpRing/3; // for each vector of ring for (var j = 0; j < 3; j++) { // for each tile in vector for(var k = 0; k < tpVect; k++) { xyz[0] = ???; xyz[1] = ??

I have one button in an AbsoluteLayout in an XML file. From there I am able to set the (x,y) position of the button. How can I get and set the (x,y) coordinates of the button programmatically? Thanks all. You have to get a reference to you button, for example by calling findViewById() . When you got the reference to the button you can set the x and y value with button. setX() and button. setY() . .... Button myButton = (Button) findViewById(R.id.<id of the button in the layout xml file>); myButton.setX(<x value>); myButton.setY(<y value>); .... The answer you're looking for is in LayoutParams

I have a game that I am working on in a C# console application, purely as practice before going on to better methods. As opposed to using something such as a Windows Forms App, which has button functionality built in, I am endeavoring to grab the cursor position (which I know how to do) and compare it to a number of area's inside a console application as defined by perhaps pixel location, but I also do not know if there is some sort of built in unit of space other than pixels (this last bit is the part I am unable to figure). P.S. I know this is in general terms, with no code already provided,

I try to get the coordinates from the location where I hit the touchscreen to do put a specific UIImage at this point. How can I do this? Mundi In a UIResponder subclass, such as UIView : override func touchesBegan(touches: NSSet, withEvent event: UIEvent) { let touch = touches.anyObject()! as UITouch let location = touch.locationInView(self) } This will return a CGPoint in view coordinates. Updated with Swift 3 syntax override func touchesBegan(touches: NSSet, withEvent event: UIEvent) { let touch = touches.first! let location = touch.location(in: self) } Updated with Swift 4 syntax override

I'm really sorry if this is a very basic question, but I have not choice but ask it: How do you translate the accelerometer data from the device coordinates to real world coordinates? I mean, assuming that the accelerometer is giving me somenting like (Ax,Ay,Az) - in device's coordinates -, what transformations should I apply to transform the values into (Ax',Ay',Az') - in real world's coordinates -, so I can use the acceleration vector in real worlds coordinates to calculate if the device is accelerating north, east, south-west,etc? I have been working around this issue during the past few

Let's say I have a Table of rows that contain coordinates. What would be the best way to pull only the rows of coordinates which are in the radius of another coordinate? To simplify my question, I'm giving the following example: Table like: Columns: Latitude, Longitude. Row1: 23.44444 24.55555 Row2: 32.44444 28.22222 Row3: 35.11111 32.12345 In an SQL statement, how do I get the rows of coordinates that are in the radius of Row3 for example? jbochi This post shows how to do this in SQL Server. And here is how to do it in MySQL: SELECT ((ACOS(SIN($lat * PI() / 180) * SIN(lat * PI() / 180) + COS(