Moved source into separate src directory due to popular request

[GpsPrune.git] / tim / prune / gui / map / MapUtils.java

diff --git a/tim/prune/gui/map/MapUtils.java b/tim/prune/gui/map/MapUtils.java
deleted file mode 100644 (file)
index 49d9467..0000000
--- a/tim/prune/gui/map/MapUtils.java
+++ /dev/null
@@ -1,101 +0,0 @@
-package tim.prune.gui.map;
-
-import java.awt.Color;
-import java.awt.image.BufferedImage;
-
-/**
- * Class to manage coordinate conversions and other stuff for maps
- */
-public abstract class MapUtils
-{
-       /**
-        * Transform a longitude into an x coordinate
-        * @param inLon longitude in degrees
-        * @return scaled X value from 0 to 1
-        */
-       public static double getXFromLongitude(double inLon)
-       {
-               return (inLon + 180.0) / 360.0;
-       }
-
-       /**
-        * Transform a latitude into a y coordinate
-        * @param inLat latitude in degrees
-        * @return scaled Y value from 0 to 1
-        */
-       public static double getYFromLatitude(double inLat)
-       {
-               return (1 - Math.log(Math.tan(inLat * Math.PI / 180) + 1 / Math.cos(inLat * Math.PI / 180)) / Math.PI) / 2;
-       }
-
-       /**
-        * Transform an x coordinate into a longitude
-        * @param inX scaled X value from 0(-180deg) to 1(+180deg)
-        * @return longitude in degrees
-        */
-       public static double getLongitudeFromX(double inX)
-       {
-               // Ensure x is really between 0 and 1 (to wrap longitudes)
-               double x = ((inX % 1.0) + 1.0) % 1.0;
-               // Note: First %1.0 restricts range to (-1,1), then +1.0 shifts to (0,2)
-               // Finally, %1.0 to give (0,1)
-               return x * 360.0 - 180.0;
-       }
-
-       /**
-        * Transform a y coordinate into a latitude
-        * @param inY scaled Y value from 0 to 1
-        * @return latitude in degrees
-        */
-       public static double getLatitudeFromY(double inY)
-       {
-               double n = Math.PI * (1 - 2 * inY);
-               return 180 / Math.PI * Math.atan(0.5 * (Math.exp(n) - Math.exp(-n)));
-       }
-
-       /**
-        * Tests whether there are any dark pixels in the image within the specified x,y rectangle
-        * @param inImage image to test
-        * @param inX left X coordinate
-        * @param inY bottom Y coordinate
-        * @param inWidth width of rectangle
-        * @param inHeight height of rectangle
-        * @param inTextColour colour of text
-        * @return true if the rectangle overlaps stuff too close to the given colour
-        */
-       public static boolean overlapsPoints(BufferedImage inImage, int inX, int inY,
-               int inWidth, int inHeight, Color inTextColour)
-       {
-               // each of the colour channels must be further away than this to count as empty
-               final int BRIGHTNESS_LIMIT = 80;
-               final int textRGB = inTextColour.getRGB();
-               final int textLow = textRGB & 255;
-               final int textMid = (textRGB >> 8) & 255;
-               final int textHigh = (textRGB >> 16) & 255;
-               try
-               {
-                       // loop over x coordinate of rectangle
-                       for (int x=0; x<inWidth; x++)
-                       {
-                               // loop over y coordinate of rectangle
-                               for (int y=0; y<inHeight; y++)
-                               {
-                                       int pixelColor = inImage.getRGB(inX + x, inY - y);
-                                       // split into four components rgba
-                                       int pixLow = pixelColor & 255;
-                                       int pixMid = (pixelColor >> 8) & 255;
-                                       int pixHigh = (pixelColor >> 16) & 255;
-                                       //int fourthBit = (pixelColor >> 24) & 255; // alpha ignored
-                                       // If colours are too close in any channel then it's an overlap
-                                       if (Math.abs(pixLow-textLow) < BRIGHTNESS_LIMIT ||
-                                               Math.abs(pixMid-textMid) < BRIGHTNESS_LIMIT ||
-                                               Math.abs(pixHigh-textHigh) < BRIGHTNESS_LIMIT) {return true;}
-                               }
-                       }
-               }
-               catch (NullPointerException e) {
-                       // ignore null pointers, just return false
-               }
-               return false;
-       }
-}