From 2ecbb91c28b33142afb69e44f493e3bfc4fafac8 Mon Sep 17 00:00:00 2001
From: Adam Martindale <awiamartindale@googlemail.com>
Date: Fri, 2 Sep 2011 15:52:27 +0100
Subject: Finalized circleExpand, setLED check for legitimacy.

---
 PunchingBag/src/PunchingBag.java | 74 +++++++++++++++++++++++-----------------
 1 file changed, 42 insertions(+), 32 deletions(-)

(limited to 'PunchingBag/src')

diff --git a/PunchingBag/src/PunchingBag.java b/PunchingBag/src/PunchingBag.java
index 8408225..aa8a632 100644
--- a/PunchingBag/src/PunchingBag.java
+++ b/PunchingBag/src/PunchingBag.java
@@ -7,11 +7,13 @@ import java.util.Iterator;
 // TODO: Loads of threads in this class, make sure everything is thread safe.
 
 public class PunchingBag implements Runnable {
+	final public int ledHeight = 20;
+	final public int ledWidth = 9;
 	private byte[] rawLeds = new byte[6 * 8];
-	private Colour[][] leds = new Colour[9][20];
+	private Colour[][] leds = new Colour[ledWidth][ledHeight];
 	private byte[] ledGridIntensities = new byte[6];
 	private boolean[][] buttons = new boolean[8][19];
-	
+
 	private ArrayList<Effect> runningEffects = new ArrayList<Effect>();
 
 	enum Colour {
@@ -39,13 +41,18 @@ public class PunchingBag implements Runnable {
 		ledListenerList.add(LEDListener.class, l);
 	}
 
-	public void setLED(int i, int j, Colour colour) {
-		leds[i][j] = colour;
+	public boolean setLED(int x, int y, Colour colour) {
+		if (x >= 0 && x < ledWidth && y >= 0 && y < ledHeight) {
+			leds[x][y] = colour;
+			return true;
+		} else {
+			return false;
+		}
 	}
 
 	void CircleExpand(int x, int y, int delay, Colour colour) {
 		// TODO: Adam correct CircleExpand constructor, or this method?
-		//runningEffects.add(new CircleExpand(x,y,delay,colour));
+		// runningEffects.add(new CircleExpand(x,y,delay,colour));
 	}
 
 	class Effect implements Runnable {
@@ -73,12 +80,13 @@ public class PunchingBag implements Runnable {
 	}
 
 	class CircleExpand extends Effect {
-		double currentWidth;
 		final byte x;
 		final byte y;
 		byte intensity;
 		boolean drawnSomething = true;
 
+		float currentRadius = 0;
+
 		public CircleExpand(byte x, byte y, byte intensity) {
 			this.x = x;
 			this.y = y;
@@ -97,42 +105,39 @@ public class PunchingBag implements Runnable {
 				colour = Colour.Green;
 			}
 
-			drawnSomething = false;
-
-			for (double i = 0; i < 360; i++) {
-				// int x = x + (int) Math.round(currentWidth * Math.cos(i));
-				// int y = y + (int) Math.round(currentWidth * Math.sin(i));
-
-				if (x >= 0 && x <= 8 && y >= 0 && y <= 19) {
-					setLED(x, y, colour);
-					drawnSomething = true;
-				}
-
-			}
-
-			currentWidth += 0.1 + (currentWidth / 10);
+			currentRadius += 0.1 + (currentRadius / 10);
+			// longhand: currentRadius = currentRadius + 0.1 + (currentRadius / 10);
 
-			if (!drawnSomething)
+			if (!DrawEllipse(2, 4, (int) currentRadius, (int) currentRadius, colour))
 				stop = true;
 		}
 
 	}
 
-	public void DrawEllipse(int x, int y, int radx, int rady, Colour colour) {
+	public boolean DrawEllipse(int x, int y, int radx, int rady, Colour colour) {
 		if (radx == 0 && rady == 0) {
-			setLED(x, y, colour);
-			return;
+			return setLED(x, y, colour);
 		}
 
+		boolean doneSomething = false;
+
 		int dx = 0, dy = rady; /* first quadrant from top left to bottom right */
 		int a2 = radx * radx, b2 = rady * rady;
 		int err = b2 - (2 * rady - 1) * a2, e2; /* error value in the first step */
 
 		do {
-			setLED(x + dx, y + dy, colour); /* I. Quadrant */
-			setLED(x - dx, y + dy, colour); /* II. Quadrant */
-			setLED(x - dx, y - dy, colour); /* III. Quadrant */
-			setLED(x + dx, y - dy, colour); /* IV. Quadrant */
+			if (setLED(x + dx, y + dy, colour)) {/* I. Quadrant */
+				doneSomething = true;
+			}
+			if (setLED(x - dx, y + dy, colour)) {/* II. Quadrant */
+				doneSomething = true;
+			}
+			if (setLED(x - dx, y - dy, colour)) {/* III. Quadrant */
+				doneSomething = true;
+			}
+			if (setLED(x + dx, y - dy, colour)) {/* IV. Quadrant */
+				doneSomething = true;
+			}
 
 			e2 = 2 * err;
 			if (e2 < (2 * dx + 1) * b2) {
@@ -146,9 +151,14 @@ public class PunchingBag implements Runnable {
 		} while (dy >= 0);
 
 		while (dx++ < radx) { /* correction for flat ellipses (b=1) */
-			setLED(x + dx, y, colour);
-			setLED(x - dx, y, colour);
+			if (setLED(x + dx, y, colour)) {
+				doneSomething = true;
+			}
+			if (setLED(x - dx, y, colour)) {
+				doneSomething = true;
+			}
 		}
+		return doneSomething;
 	}
 
 	private void calculateRawLeds() {
@@ -187,7 +197,7 @@ public class PunchingBag implements Runnable {
 
 	/* Clears the led grid and stops all running effects */
 	public void clearLEDGrid() {
-		for (Iterator<Effect> iter = runningEffects.iterator(); iter.hasNext(); ) {
+		for (Iterator<Effect> iter = runningEffects.iterator(); iter.hasNext();) {
 			((Effect) iter.next()).stop();
 		}
 		Arrays.fill(leds, Boolean.FALSE);
@@ -196,7 +206,7 @@ public class PunchingBag implements Runnable {
 	public void setLEDGridIntensity(byte grid, byte intensity) {
 		ledGridIntensities[grid] = intensity;
 	}
-	
+
 	public void setLEDIntensities(byte intensity) {
 		Arrays.fill(ledGridIntensities, intensity);
 	}
-- 
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