From e78b371e73ee88b3e59b1ee1446b1dbe5aa567c5 Mon Sep 17 00:00:00 2001
From: Philipp <interfisch@gmx.net>
Date: Sun, 18 Dec 2016 23:37:20 +0100
Subject: [PATCH] random, set, off and pixels functions implemented

---
 pixelprojektor/pixelprojektor.ino | 98 +++++++++++++++++++++++++------
 1 file changed, 81 insertions(+), 17 deletions(-)

diff --git a/pixelprojektor/pixelprojektor.ino b/pixelprojektor/pixelprojektor.ino
index 311fb12..65505f8 100644
--- a/pixelprojektor/pixelprojektor.ino
+++ b/pixelprojektor/pixelprojektor.ino
@@ -11,23 +11,51 @@ Adafruit_NeoPixel strip = Adafruit_NeoPixel(64, PIN, NEO_GRB + NEO_KHZ800);
 
 HomieNode homieNode("pixel", "commands");
 
+int xyToPos(int x, int y){ //convert x y pixel position to matrix position
+    if (y%2==0){
+      return (y*8+x);
+    }else{
+      return (y*8+(7-x)); 
+    }
+}
+
+int numToPos(int num){ //convert pixel number to actual 8x8 matrix position
+  int x=num%8;
+  int y=num/8;
+  return xyToPos(x,y);
+}
+
+uint32_t wheel(byte WheelPos) {
+  WheelPos = 255 - WheelPos;
+  if(WheelPos < 85) {
+    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
+  }
+  if(WheelPos < 170) {
+    WheelPos -= 85;
+    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
+  }
+  WheelPos -= 170;
+  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
+}
+
+
 void led_fill(uint32_t c)
 {
   for (int i=0; i < strip.numPixels(); i++) {
-    strip.setPixelColor(i, c);    //turn every third pixel on
+    strip.setPixelColor(i, c);
   }
   strip.show();
 }
 
-bool effectHandler(const HomieRange& range, const String& value) {
-  int sep = value.indexOf("|");
-  
-  
-    
-  Homie.getLogger() << "-> " << value << endl;
-
-  //Serial.print("->"); Serial.println(value);
+void led_random()
+{
+  for (int i=0; i < strip.numPixels(); i++) {
+    strip.setPixelColor(i, wheel(random(0,255)));
+  }
+  strip.show();
+}
 
+uint32_t parseColor(String value){
   if (value.charAt(0)=='#'){ //solid fill
     String color=value.substring(1);
     int number = (int) strtol( &color[0], NULL, 16);
@@ -41,26 +69,62 @@ bool effectHandler(const HomieRange& range, const String& value) {
     //Serial.print("r=");Serial.print(r);
     //Serial.print(" g=");Serial.print(g);
     //Serial.print(" b=");Serial.println(b);
+    return strip.Color(r, g, b);
 
-    led_fill(strip.Color(r, g, b));
+  }  
+  return 0;
+}
+
+
+bool effectHandler(const HomieRange& range, const String& value) {
+  Homie.getLogger() << "-> " << value << endl;
+  int sep = value.indexOf("|");
+
+  String command=value.substring(0,sep);
+  String parameters=value.substring(sep+1);
+  Homie.getLogger() << "command=" << command << " parameters=" << parameters << endl;
+  
+  if (command.equals("fill")){
+    led_fill(parseColor(parameters));
+  }else if (command.equals("off")){
+    led_fill(strip.Color(0, 0, 0));
+  }else if (command.equals("random")){
+    led_random();
+  }else if (command.equals("set")){
+    int x=parameters.substring(0,1).toInt();
+    int y=parameters.substring(1,2).toInt();
+    String cstr=parameters.substring(2,9);
+    strip.setPixelColor(xyToPos(x,y), parseColor(cstr));
+    strip.show();
   }
+
    
   
   return true;
 }
 
 bool pixelsHandler(const HomieRange& range, const String& value) {
-  int sep = value.indexOf("|");
   
-  
-  if(sep > 0) {
+  String remaining=value;
+  int i=0;
+  do{
+    String current=remaining.substring(0,7);
+    Homie.getLogger() << i << ":" << current << endl;
+    uint32_t currentcolor=parseColor(current);
+
+    strip.setPixelColor(i, currentcolor);
+    i++;
     
-    //Homie.getLogger() << "scroll " << value << " wait " << wait << endl;
-     
-  } else {
+    remaining=remaining.substring(7);
     
-    //Homie.getLogger() << "scroll " << value << endl;
+  }while(remaining.length()>2 && (i<strip.numPixels()));
+  Homie.getLogger() << "  filling rest with black" << endl;
+  while(i<strip.numPixels()){
+    strip.setPixelColor(numToPos(i), strip.Color(0,0,0));
+    i++;  
   }
+
+  strip.show();
   
   return true;
 }