commit c37359359df6adbb5e6970ebe097a087f72ba685
Author: James Devine <pingud98@users.noreply.github.com>
Date:   Thu Dec 26 15:43:45 2013 -0800

diff --git a/laser alphabet.pde b/laser alphabet.pde
new file mode 100644
index 0000000..9368f6d
--- /dev/null
+++ b/laser alphabet.pde	
@@ -0,0 +1,461 @@
+
+
+int delayone = 2;
+int delaytwo = 1;
+int delaythree = 1;
+int delayfour = 1;
+
+int xPinOne = 3;
+int laserPin = 4;
+int xPinTwo = 5;
+int yPinOne = 6;
+int yPinTwo = 9;
+int zPinOne = 10;
+int zPinTwo = 11;
+//int 
+int ledPin = 9;    // LED connected to digital pin 9
+byte incomingByte;
+
+
+int currentX = 0;
+int currentY = 0;
+
+//byte imager[32768];
+void setup()  { 
+  pinMode(laserPin, OUTPUT);
+  lasermove(0,0);
+  // nothing happens in setup 
+  //lasermove(currentX,currentY);
+  laser(0);
+  
+//Serial.begin(115200);
+Serial.println("init complete");
+} 
+
+
+void loop()  { 
+
+directmove(0,0,0);
+for (int megaletter = int('a'); megaletter < (int('z')+1); megaletter++){
+drawletter(char(megaletter), 9);
+}
+}
+
+void drawletter(char alphabeat, int loops)
+{for (int passes = 0; passes <loops; passes++) {
+  switch(alphabeat){
+    case 'a':
+  
+    directmove(0,0,0);
+    directmove(500,250,1);
+    directmove(0,500,1);
+    directmove(500,250,1);
+    directmove(0,0,1);
+    directmove(250,500,0);
+    directmove(250,0,1);
+    //directmove(250,500,1);
+  
+    break;
+    case 'b':
+  
+    directmove(0,0,0);
+    directmove(500,0,1);
+    directmove(490,50,1);
+    directmove(480,200,1);
+    directmove(450,250,1);
+    directmove(400,500,1);
+    directmove(350,400,1);
+    directmove(300,200,1);
+    directmove(250,0,1);
+    directmove(200,250,1);
+    directmove(100,500,1);
+    directmove(50,450,1);
+    directmove(0,0,1);
+    break;    
+    case 'c':
+    directmove(400,500,0);
+    directmove(450,400,1);
+    directmove(500,250,1);
+    directmove(450,0,1);
+    directmove(50,0,1);
+    directmove(0,250,1);
+    directmove(50,500,1);
+
+    break;    
+    
+        case 'd':
+    directmove(500,0,0);
+    directmove(0,0,1);
+    directmove(100,350,1);
+    directmove(250,500,1);
+    directmove(400,250,1);
+    directmove(500,0,1);
+
+
+    break;    
+    
+    case 'e':
+    directmove(500,500,0);
+    directmove(500,0,1);
+    directmove(250,0,1);
+    directmove(250,450,1);
+    directmove(250,0,1);
+    directmove(0,0,1);
+    directmove(0,500,1);
+    directmove(0,0,1);
+    directmove(500,0,1); 
+    directmove(500,500,1);   
+    break; 
+    case 'f':
+    directmove(500,500,0);
+    directmove(500,0,1);
+    directmove(300,0,1);
+    directmove(300,250,1);
+    directmove(300,0,1);
+    directmove(0,0,1);
+    directmove(500,0,1); 
+    directmove(500,500,1);   
+    break;   
+   
+       case 'g':
+    directmove(400,500,0);
+    directmove(450,400,1);
+    directmove(500,250,1);
+    directmove(450,0,1);
+    directmove(50,0,1);
+    directmove(0,250,1);
+    directmove(0,450,1);
+    directmove(150,450,1);
+    directmove(150,300,1);
+    directmove(150,500,1);
+    directmove(150,300,1);
+    
+
+    break;   
+    
+    
+           case 'h':
+    directmove(0,0,0);
+    directmove(500,0,1);
+    directmove(500,500,0);
+    directmove(0,500,1);
+    directmove(250,500,0);
+    directmove(250,0,1);
+    directmove(250,500,1);
+    
+
+    break;  
+   
+   case 'i':
+   directmove(500,200,0);
+ directmove(500,200,1);
+directmove(500,300,1);
+directmove(500,250,1);
+directmove(0,250,1);
+directmove(0,200,1);
+directmove(0,300,1);
+directmove(0,250,1);
+directmove(500,250,1);
+break;
+
+case 'j':
+directmove(500,0,0);
+directmove(500,500,1);
+directmove(200,500,1);
+directmove(0,250,1);
+//directmove(100,0,1);
+break;
+
+case 'k':
+directmove(500,0,0);
+directmove(0,0,1);
+directmove(250,0,1);
+directmove(400,500,1);
+directmove(250,0,1);
+directmove(100,500,1);
+directmove(250,0,1);
+directmove(500,0,1);
+break;
+
+case 'l':
+directmove(500,0,0);
+directmove(0,0,1);
+directmove(0,300,1);
+directmove(0,0,1);
+directmove(500,0,1);
+break;
+
+  case 'm':
+   
+    directmove(500,120,1);
+    directmove(250,240,1);
+    directmove(500,360,1);
+    directmove(0,480,1);
+    directmove(500,360,1);
+    directmove(250,240,1);
+    directmove(500,120,1);
+    directmove(0,0,1);
+    
+    break;
+    
+    case 'n':
+    directmove(0,0,0);
+    directmove(500,0,1);
+    directmove(0,500,1);
+    directmove(500,500,1);
+    directmove(0,500,1);
+    directmove(500,0,1);
+    break;
+    
+    case 'o':
+    directmove(50,50,0);
+    directmove(450,50,1);
+    directmove(450,450,1);
+    directmove(50,450,1);
+    directmove(50,50,1);
+    break;
+        case 'p':
+    directmove(0,0,0);
+    directmove(500,0,1);
+    directmove(500,450,1);
+    directmove(300,450,1);
+    directmove(300,0,1);
+    directmove(0,0,1);
+    break;
+ case 'q':
+    directmove(50,50,0);
+    directmove(450,50,1);
+    directmove(450,450,1);
+    directmove(50,450,1);
+    directmove(100,300,0);
+    directmove(0,500,1);
+    directmove(50,450,1);
+    directmove(50,50,1);
+    break;
+    
+    case 'r':
+    directmove(0,0,0);
+    directmove(500,0,1);
+    directmove(500,450,1);
+    directmove(450,500,1);
+    directmove(300,450,1);
+    directmove(300,0,1);
+    directmove(0,500,1);
+    directmove(300,0,1);
+    directmove(0,0,1);
+    break;
+    
+    case 's':
+    directmove(500,500,0);
+    directmove(500,0,1);
+    directmove(250,0,1);
+    directmove(250,500,1);
+    directmove(0,500,1);
+    directmove(0,0,1);
+    directmove(500,500,0);
+    break;
+    
+    case 't':
+    directmove(500,0,0);
+    directmove(500,500,1);
+    directmove(500,250,1);
+    directmove(0,250,1);
+    directmove(500,250,1);
+    directmove(500,0,1);
+    break;
+    
+    case 'u':
+    directmove(500,0,0);
+    directmove(0,0,1);
+    directmove(0,500,1);
+    directmove(500,500,1);
+    directmove(500,0,0);
+    break;
+    
+    case 'v':
+    directmove(500,0,0);
+    directmove(0,250,1);
+    directmove(500,500,1);
+    break;
+    
+    case 'w':
+    directmove(500,0,0);
+    directmove(0,100,1);
+    directmove(300,250,1);
+    directmove(0,400,1);
+    directmove(500,500,1);
+    break;
+    
+    case 'x':
+    directmove(500,0,0);
+    directmove(0,500,1);
+    directmove(500,500,0);
+    directmove(0,0,1);
+    break;
+    
+ 
+  case 'y':
+  directmove(0,250,0);
+  directmove(250,250,1);
+  directmove(500,0,1);
+  directmove(250,250,1);
+  directmove(500,500,1);
+  directmove(250,250,1);
+  directmove(0,250,0);
+    break;
+    
+  case 'z':
+  directmove(500,0,0);
+  directmove(500,500,1);
+  directmove(0,0,1);
+  directmove(0,500,1);
+  break;
+  
+  case ' ':
+ directmove(0,0,0); 
+  default:
+  directmove(0,0,0);
+    break;
+
+}}}
+
+
+void directmove(int targetx, int targety, int laserstate)
+{
+  int deltax = 0;
+  float xincrement = 0;
+  int deltay = 0;
+  float yincrement = 0;
+  int sumdelta = 0;
+  int numsteps = 0;
+  float truexposn = 0;
+  float trueyposn = 0;
+  truexposn = float(currentX);
+  trueyposn = float(currentY);
+  deltax = targetx - currentX;
+  deltay = targety - currentY;
+  sumdelta = deltax + deltay;
+  //Serial.println(deltax);
+  //Serial.println(deltay);
+//  currentX = startx;
+//  currentY = starty;
+//  lasermove(currentX, currentY);
+  numsteps = max((max(currentX,targetx)-min(currentX,targetx)),(max(currentY,targety)-min(currentY,targety)));
+  //Serial.println(numsteps);
+  xincrement = float(deltax) / float(numsteps);
+  yincrement = float(deltay) / float(numsteps);
+  //Serial.println(xincrement);
+  //Serial.println(yincrement);
+  if (laserstate == 1){
+  delay(delayone);
+  laser(1);
+  delay(delaytwo);
+  }
+  for (int thisstep = 0; thisstep<numsteps; thisstep++)
+{
+  truexposn = truexposn + xincrement;
+  trueyposn = trueyposn + yincrement;
+  lasermove(int(truexposn), int(trueyposn));  
+}
+currentX = targetx;
+currentY = targety;
+//delay(delaythree);
+laser(0);
+//delay(40);
+}
+
+
+void laser(int onoff)
+{
+  if (onoff == 1){
+    digitalWrite(laserPin, HIGH);
+  }
+  else
+  {
+    digitalWrite(laserPin, LOW);
+  }
+}
+
+void lasermove(int xcoord, int ycoord)
+{
+xposn(xcoord);
+yposn(ycoord);
+//delay(5);
+delayMicroseconds(delayfour);
+}
+
+void xposn(int xcoord) {
+  xcoord = 500-xcoord;
+  //limit the x movement to max range as determined
+  if (xcoord > 500)
+  {
+    xcoord = 500;
+  }
+  
+  if (xcoord <= 255)
+  {
+    analogWrite(zPinTwo, 0);
+    analogWrite(zPinOne, 255-xcoord);
+    
+  }
+  else
+  {
+    analogWrite(zPinOne, 0);
+    analogWrite(zPinTwo, xcoord-255);
+  }
+}
+
+void yposn(int ycoord){
+  ycoord = 500 - ycoord;
+  if (ycoord > 500)
+  {
+    ycoord = 500;
+  }
+  
+  if (ycoord <= 255)
+  {
+    analogWrite(yPinTwo, 0);
+    analogWrite(yPinOne, 255-ycoord);
+    //analogWrite(yPinTwo, 255-ycoord);
+    
+  }
+  else
+  {
+    analogWrite(yPinOne, 0);
+    analogWrite(yPinTwo, ycoord-255);
+    //analogWrite(yPinOne, ycoord-255);
+  }
+}
+
+void lefthandedsquare(){
+    //right handed square
+  for (int i = 0; i<500; i=i+1)
+  {lasermove(i,0);
+  }
+  for (int i = 0; i<500; i=i+1)
+  {lasermove(500,i);
+  } 
+  for (int i = 500; i>0; i=i-1)
+  {lasermove(i,500);
+  } 
+  for (int i = 500; i>0; i=i-1)
+  {lasermove(0,i);
+  }   }
+  
+  
+void righthandedsquare(){
+  //left handed square
+  for (int i = 0; i<500; i=i+1)
+  {lasermove(0,i);
+  }
+  for (int i = 0; i<500; i=i+1)
+  {lasermove(i,500);
+  } 
+  for (int i = 500; i>0; i=i-1)
+  {lasermove(500,i);
+  } 
+  for (int i = 500; i>0; i=i-1)
+  {lasermove(i,0);
+  } 
+
+}