From 9033cd8b1a0ecaa118709de80c19b2e2469b8a6b Mon Sep 17 00:00:00 2001
From: Fisch <interfisch@gmx.net>
Date: Sat, 19 May 2018 20:37:06 +0200
Subject: [PATCH] led brightness gamma curve added

---
 achterbahn.ino |  2 +-
 wagon.cpp      | 23 +++++++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/achterbahn.ino b/achterbahn.ino
index 78a8bb2..8a8f8c3 100644
--- a/achterbahn.ino
+++ b/achterbahn.ino
@@ -104,7 +104,7 @@ heightraw[599]=141;
   //previewHeightmap(2000);
 
   //spawnWagon();
-  //spawnWagon();
+  spawnWagon();
 
 }
 
diff --git a/wagon.cpp b/wagon.cpp
index e05e48b..dec038d 100644
--- a/wagon.cpp
+++ b/wagon.cpp
@@ -8,6 +8,23 @@
 //#define EDGE_BOUNCE
 //#define EDGE_WRAP
 
+uint8_t GammaE[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
+2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5,
+6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 11, 11,
+11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18,
+19, 19, 20, 21, 21, 22, 22, 23, 23, 24, 25, 25, 26, 27, 27, 28,
+29, 29, 30, 31, 31, 32, 33, 34, 34, 35, 36, 37, 37, 38, 39, 40,
+40, 41, 42, 43, 44, 45, 46, 46, 47, 48, 49, 50, 51, 52, 53, 54,
+55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70,
+71, 72, 73, 74, 76, 77, 78, 79, 80, 81, 83, 84, 85, 86, 88, 89,
+90, 91, 93, 94, 95, 96, 98, 99,100,102,103,104,106,107,109,110,
+111,113,114,116,117,119,120,121,123,124,126,128,129,131,132,134,
+135,137,138,140,142,143,145,146,148,150,151,153,155,157,158,160,
+162,163,165,167,169,170,172,174,176,178,179,181,183,185,187,189,
+191,193,194,196,198,200,202,204,206,208,210,212,214,216,218,220,
+222,224,227,229,231,233,235,237,239,241,244,246,248,250,252,255};
+
 Wagon::Wagon(int id,int numpixels, Adafruit_NeoPixel *strip,uint8_t *height,float pos, float trainlength,float startvel,float startacc, float wagonmass, uint32_t wagoncolor)
 {
   _id = id;
@@ -221,10 +238,16 @@ void Wagon::updateGraphics()
     uint8_t _g = (uint8_t)(c >>  8)*healtpositive;
     uint8_t _b = (uint8_t)c*healtpositive;
 
+    
+
     _r*=featherbrightness;
     _g*=featherbrightness;
     _b*=featherbrightness;
 
+    _r=GammaE[_r];
+    _g=GammaE[_g];
+    _b=GammaE[_b];
+
     uint32_t _pxcolor=_strip->getPixelColor(i); //get current color of that pixel
     uint8_t _pxr = _pxcolor >> 16;
     uint8_t _pxg = _pxcolor >> 8;