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java Programming Glossary: coordinateStoring objects for locating by x,y coordinates http://stackoverflow.com/questions/132319/storing-objects-for-locating-by-x-y-coordinates objects for locating by x y coordinates I'm trying to determine a fast way of storing a set of objects.. of storing a set of objects each of which have an x and y coordinate value such that I can quickly retrieve all objects within a.. them in a pair of TreeMaps as well one sorted on the x coordinate and one sorted on the y coordinate using this code xSubset objectsByX.subSet..
Reverse Java Graphics2D scaled and rotated coordinates http://stackoverflow.com/questions/2244157/reverse-java-graphics2d-scaled-and-rotated-coordinates Java Graphics2D scaled and rotated coordinates I use Graphics2D in Java to scale and rotate the picture I.. I draw. I now want to be able to tell what the original coordinates were when I click on a certain point in the picture. So given.. point in the picture. So given the rotated and scaled coordinates I want to calculate the original ones. Is there a simple way..
Draw a circle with a radius and points around the edge http://stackoverflow.com/questions/2508704/draw-a-circle-with-a-radius-and-points-around-the-edge i can mathematically calculate how to find the coordinates of the point around the edge but i cant seem to be able to.. draw the circle from the center rather from a starting coordinate using a height and width. My current code is on a separate frame..
Using Graphics2D to overlay text on a BufferedImage and return a BufferedImage http://stackoverflow.com/questions/2658554/using-graphics2d-to-overlay-text-on-a-bufferedimage-and-return-a-bufferedimage case. Basically I was to overlay some text text at a given coordinate x y I have the below function in a package protected BufferedImage..
Calculating the angle between the line defined by two points http://stackoverflow.com/questions/2676719/calculating-the-angle-between-the-line-defined-by-two-points on the screen that the user touches. I have the constant coordinates that represent the center of the screen and I can get the coordinates.. that represent the center of the screen and I can get the coordinates of the point that the user taps on. I'm using the formula outlined.. this but I think the fact the I'm working in screen coordinates is causing a miscalculation since the Y coordinate is reversed...
Sorting a list of points with Java http://stackoverflow.com/questions/5178092/sorting-a-list-of-points-with-java a list of point objects which I want to sort by a certain coordinate say the x values. Does Java provide any useful mechanisms or..
Rotating a shape vertically around the x-axis http://stackoverflow.com/questions/5593066/rotating-a-shape-vertically-around-the-x-axis Absent a clear question a simple animation using your coordinate arrays is shown below. In general you can transform the graphics..
How does this code for delaunay triangulation work? http://stackoverflow.com/questions/5825089/how-does-this-code-for-delaunay-triangulation-work in d 1 dimensional space by giving each point p an extra coordinate equal to p 2 taking the bottom side of the convex hull and mapping.. mapping back to d dimensional space by deleting the last coordinate. In your example d is 2. The vector xn yn zn is the cross product..
JFreechart series tool tip above shape annotation http://stackoverflow.com/questions/6797012/jfreechart-series-tool-tip-above-shape-annotation it possible to display the series tool tips that show the coordinate of the series point over which the mouse pointer is currently..
Changing the Coordinate System in LibGDX (Java) http://stackoverflow.com/questions/7708379/changing-the-coordinate-system-in-libgdx-java the Coordinate System in LibGDX Java LibGDX has a coordinate system where 0 0 is at the bottom left. like this image http.. I'm porting a game I had already made with the usual coordinate system where 0 0 is in the Top Left Corner . My question Is.. . My question Is there any simple way of changing this coordinate system java 2d sprite coordinate systems libgdx share improve..
Android Camera will not work. startPreview fails http://stackoverflow.com/questions/7942378/android-camera-will-not-work-startpreview-fails from the ByteBuffer vertices.put triangleCoords add the coordinates to the FloatBuffer vertices.position 0 set the buffer to read.. vertices.position 0 set the buffer to read the first coordinate initialize vertex Buffer for texcoords vbb ByteBuffer.allocateDirect.. buffer from the ByteBuffer texcoords.put texcoordf add the coordinates to the FloatBuffer texcoords.position 0 set the buffer to..
rotating coordinate plane for data and text in Java http://stackoverflow.com/questions/9371961/rotating-coordinate-plane-for-data-and-text-in-java coordinate plane for data and text in Java I need to 1. move the origin.. in Java I need to 1. move the origin and also rotate the coordinate plane so that x values progress rightward and y values progress.. the code below . This will enable me to plot points at x y coordinate pairs in the code below. 2. plot rotated labels for the tic..
Draw Line between two Geo Points in JMapViewer http://stackoverflow.com/questions/10744798/draw-line-between-two-geo-points-in-jmapviewer For a line between two points just repeat the last Coordinate . Coordinate one new Coordinate ... Coordinate two new Coordinate.. line between two points just repeat the last Coordinate . Coordinate one new Coordinate ... Coordinate two new Coordinate ... List.. just repeat the last Coordinate . Coordinate one new Coordinate ... Coordinate two new Coordinate ... List Coordinate route..
Is there any way to accept only numeric values in a JTextField? http://stackoverflow.com/questions/1313390/is-there-any-way-to-accept-only-numeric-values-in-a-jtextfield used it String input where the String may not be empty Coordinate input Date input Editor on a JSpinner Map scales Numbers .....
Covert latitude/longitude point to a pixels (x,y) on mercator projection http://stackoverflow.com/questions/14329691/covert-latitude-longitude-point-to-a-pixels-x-y-on-mercator-projection OGP Geomatics Committee Guidance Note Number 7 part 2 Coordinate Conversions and Transformation Derivation of the Mercator projection..
Getting pixel data from an image using java http://stackoverflow.com/questions/1604319/getting-pixel-data-from-an-image-using-java in thread main java.lang.ArrayIndexOutOfBoundsException Coordinate out of bounds at sun.awt.image.ByteInterleavedRaster.getDataElements..
Make JPopupMenu Display with a Certain Bottom Left Coordinate http://stackoverflow.com/questions/16475417/make-jpopupmenu-display-with-a-certain-bottom-left-coordinate JPopupMenu Display with a Certain Bottom Left Coordinate Say that I want to make a button in Java in such a way so that..
Converting longitude/latitude to X/Y coordinate http://stackoverflow.com/questions/5983099/converting-longitude-latitude-to-x-y-coordinate Graphics2D g bi.createGraphics for Coordinate coordinate coordinates double latitude Double.valueOf coordinate.getLatitude.. 50 ... private List Point2D.Double convertToXY List Coordinate coordinates List Point2D.Double xys new ArrayList Point2D.Double.. MercatorProjection projection new MercatorProjection for Coordinate coordinate coordinates double latitude Double.valueOf coordinate.getLatitude..
Changing the Coordinate System in LibGDX (Java) http://stackoverflow.com/questions/7708379/changing-the-coordinate-system-in-libgdx-java the Coordinate System in LibGDX Java LibGDX has a coordinate system where..
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