coordinates

I have a very simple SpriteKit scene that is not behaving like I would expect. It is a universal app and the code that I am using to draw a single red square in the scene is as follows: let redSquare = SKSpriteNode(color: UIColor .redColor(), size: CGSizeMake(100.0, 100.0)) redSquare.anchorPoint = CGPointMake(0.0, 0.0) redSquare.position = CGPointMake(1.0, 1.0) addChild(redSquare) This code is in the GameScene didMoveToView method of the default app that xCode creates for you when you select SpriteKit game. When run on the iPad it behaves as expected drawing the red square 1 point off the

I read how to keep points that are between two points (ie. : that are part of a segment, with some imprecision) here : How can I tell if a point is nearby a certain line? Thus, I implemented this little algorithm in Java, and my code is (note that the variables' name should be clear for you ! :) ) : List<Cupple> returned = new ArrayList<>(points_to_test); for(Cupple c : points_to_test) { /*if(c == segment_first_point || c == segment_last_point) { continue; }*/ if(Math.abs(Math.abs( (segment_last_point.getNumber(0) - segment_first_point.getNumber(0)) * (segment_first_point.getNumber(1) - c

I'm designing an interface using java swing. There is a canvas for the user to draw shapes (circle, triangle, square, etc.). When the user draws a shape, I want to name each point in the shape alphabetically. I know how to get the coordinates but how do I name the points? Here is one way to do it. You use Character.toString(char) and use 'A'+offset to get any char from the alphabet. See in this small demo example, which draws polygons. Single click creates vertices of your polygon Double-click stores the current polygon and starts creating a new polygon Right-click clears the current polygon

I have a triangle and I know the coordinates of two vertices: A=(x1,y1),B=(x2,y2) All the angles: ABC=90∘,CAB=30∘ and BCA=60∘ and all the edge lengths. How can I find the coordinates of the third vertex C=(x3,y3)? I know there are two solutions (I want both). You know p1 and p2. You know the internal angles. Make a ray from p1 trough p2, and rotate it CW or CCW 30° around p1. Make a line trough p1 and p2, and rotate it 90° around p2. Calculate the intersections. You get the points: x3 = x2 + s*(y1 - y2) y3 = y2 + s*(x2 - x1) and x3 = x2 + s*(y2 - y1) y3 = y2 + s*(x1 - x2) where s = 1/sqrt(3) ≈

I would like to draw an ellipse on google maps based off four coordinates, like the current "rectangle" method available via the API: var rectangle = new google.maps.Rectangle({ strokeColor: '#FF0000', strokeOpacity: 0.8, strokeWeight: 2, fillColor: '#FF0000', fillOpacity: 0.35, map: map, bounds: new google.maps.LatLngBounds( new google.maps.LatLng(33.671068, -116.25128), new google.maps.LatLng(33.685282, -116.233942)) }); (using the bounds paramater). If that fails, is there an easy way to convert the distance between 2 polygons to a unit of measurement? You have to calculate the path

I have a two dimensional list: def list(): list1 =[1,2,3,4,5] list2 =[0,0,0,0,0] list3 =[6,7,8,9,10] list=[list1,list2,list3] for i in list: print(i) list() 6 will have the coordinates (0,2), right?? I want to move 6 to (0,1) and when I do that, I also want (0,2) to become 0. How do I do that? I have no idea.. I'm a beginner at this. Just assign directly to those two index pairs, indexing from the outer list to the inner (the last list is 2 , the middle list is 1 ), so the first element of the last list is at [2][0] : outerlist[1][0], outerlist[2][0] = outerlist[2][0], 0 This assigns two

I'm implementing some boundary based clustering on the server end of markers to display on my google maps. What I'm doing is that I have a function that is called everytime the map is moves or panned or zoomed which takes the bound of the map and makes an ajax call which in turn the server side script runs a simple sql query to retrieve the markers and clusters them. SO far teh clustering part is working nicely however sometimes the getBounds doesn't seem to be sending the correct boundaries I feel. Like I may pan a map a bit on the side and regions which used to have markers now all of a