[Polycasso-commit] SF.net SVN: polycasso:[136] trunk/polycasso/src/com/mebigfatguy/polycasso/ PolygonData.java

[<dbr...@us...>]

Revision: 136
          http://polycasso.svn.sourceforge.net/polycasso/?rev=136&view=rev
Author:   dbrosius
Date:     2009-12-03 05:15:43 +0000 (Thu, 03 Dec 2009)

Log Message:
-----------
try to push add polygon to create more localized polygons, and weight it, so that small polys are created more often.

Modified Paths:
--------------
    trunk/polycasso/src/com/mebigfatguy/polycasso/PolygonData.java

Modified: trunk/polycasso/src/com/mebigfatguy/polycasso/PolygonData.java
===================================================================
--- trunk/polycasso/src/com/mebigfatguy/polycasso/PolygonData.java	2009-12-03 04:03:57 UTC (rev 135)
+++ trunk/polycasso/src/com/mebigfatguy/polycasso/PolygonData.java	2009-12-03 05:15:43 UTC (rev 136)
@@ -23,6 +23,7 @@
 import java.awt.Dimension;
 import java.awt.Graphics2D;
 import java.awt.Polygon;
+import java.awt.Rectangle;
 import java.util.Random;
 
 /**
@@ -92,17 +93,51 @@
 	public static PolygonData randomPoly(Dimension size, int maxPoints) {
 		Random r = new Random();
 		Polygon polygon = new Polygon();
+		Rectangle polyRect = getPolyBounds(r, size);
+
 		int numPoints = r.nextInt(maxPoints - 3) + 3;
-		
 		for (int i = 0; i < numPoints; i++) {
-			polygon.addPoint(r.nextInt(size.width), r.nextInt(size.height));
+			polygon.addPoint(polyRect.x + r.nextInt(polyRect.width), polyRect.y + r.nextInt(polyRect.height));
 		}
 
 		Color c = new Color(r.nextFloat(), r.nextFloat(), r.nextFloat());
 
 		return new PolygonData(c, r.nextFloat(), polygon);
 	}
+	
+	/**
+	 * returns a rectangle that new polygons should points out of. It attempts to allow
+	 * for creating localized polygons, so that small areas will be generated more likely.
+	 * 
+	 * @param r a random generator object
+	 * @param maxSize the max size of the image
+	 * 
+	 * @return a rectangle to pick polygon points out of
+	 */
+	private static Rectangle getPolyBounds(Random r, Dimension maxSize) {
 		
+		Rectangle bounds = new Rectangle();
+		
+		int polySize = r.nextInt(12);
+		if (polySize < 3) {
+			bounds.width = 2 + (maxSize.width / 7);
+			bounds.height = 2 + (maxSize.height / 7);			
+		} else if (polySize < 6) {
+			bounds.width = 2 + (maxSize.width / 5);
+			bounds.height = 2 + (maxSize.height / 5);
+		} else if (polySize < 9) {
+			bounds.width = 2 + (maxSize.width / 3);
+			bounds.height = 2 + (maxSize.height / 3);		
+		} else {
+			bounds.width = maxSize.width;
+			bounds.height = maxSize.height;			
+		}
+		
+		bounds.x = r.nextInt(maxSize.width - bounds.width + 1) - 1;
+		bounds.y = r.nextInt(maxSize.height - bounds.height + 1) - 1;
+		return bounds;
+	}
+		
 	/**
 	 * clones this polygon data data
 	 * 


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