From 34c9c5a9b1314f4d419424b4df09d1c18ded12d5 Mon Sep 17 00:00:00 2001
From: guardmedia <guardmedia@users.noreply.github.com>
Date: Tue, 15 Dec 2020 07:35:50 -0500
Subject: [PATCH] Adding palette blends effect (#1491)

* Adding palette blends effect

* Fixes for blends effect

* Improved blend effect intesity and speed control

* Simplify Blends timing

Co-authored-by: Tyler Walters <tyler@guardmedia.com>
Co-authored-by: cschwinne <dev.aircoookie@gmail.com>
---
 wled00/FX.cpp | 20 ++++++++++++++++++++
 wled00/FX.h   |  9 ++++++---
 2 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/wled00/FX.cpp b/wled00/FX.cpp
index d95cc351..b3308a9a 100644
--- a/wled00/FX.cpp
+++ b/wled00/FX.cpp
@@ -3733,3 +3733,23 @@ uint16_t WS2812FX::mode_washing_machine(void) {
 
   return FRAMETIME;
 }
+
+/*
+  Blends random colors across palette
+  Modified, originally by Mark Kriegsman https://gist.github.com/kriegsman/1f7ccbbfa492a73c015e
+*/
+uint16_t WS2812FX::mode_blends(void) {
+  uint16_t dataSize = sizeof(uint32_t) * SEGLEN;
+  if (!SEGENV.allocateData(dataSize)) return mode_static(); //allocation failed
+  uint32_t* pixels = reinterpret_cast<uint32_t*>(SEGENV.data);
+  uint8_t blendSpeed = map(SEGMENT.intensity, 0, UINT8_MAX, 10, 128);
+    uint8_t shift = (now * ((SEGMENT.speed >> 3) +1)) >> 8;
+
+  for (int i = 0; i < SEGLEN; i++) {
+    pixels[i] = color_blend(pixels[i], color_from_palette(shift + quadwave8((i + 1) * 16), false, PALETTE_SOLID_WRAP, 255), blendSpeed);
+    setPixelColor(i, pixels[i]);
+    shift += 3;
+  }
+
+  return FRAMETIME;
+}
\ No newline at end of file
diff --git a/wled00/FX.h b/wled00/FX.h
index 2255b674..a33b992d 100644
--- a/wled00/FX.h
+++ b/wled00/FX.h
@@ -116,7 +116,7 @@
 #define IS_REVERSE      ((SEGMENT.options & REVERSE     ) == REVERSE     )
 #define IS_SELECTED     ((SEGMENT.options & SELECTED    ) == SELECTED    )
 
-#define MODE_COUNT  115
+#define MODE_COUNT  116
 
 #define FX_MODE_STATIC                   0
 #define FX_MODE_BLINK                    1
@@ -233,6 +233,7 @@
 #define FX_MODE_DANCING_SHADOWS        112
 #define FX_MODE_WASHING_MACHINE        113
 #define FX_MODE_CANDY_CANE             114
+#define FX_MODE_BLENDS                 115
 
 class WS2812FX {
   typedef uint16_t (WS2812FX::*mode_ptr)(void);
@@ -461,6 +462,7 @@ class WS2812FX {
       _mode[FX_MODE_DANCING_SHADOWS]         = &WS2812FX::mode_dancing_shadows;
       _mode[FX_MODE_WASHING_MACHINE]         = &WS2812FX::mode_washing_machine;
       _mode[FX_MODE_CANDY_CANE]              = &WS2812FX::mode_candy_cane;
+      _mode[FX_MODE_BLENDS]                  = &WS2812FX::mode_blends;
 
       _brightness = DEFAULT_BRIGHTNESS;
       currentPalette = CRGBPalette16(CRGB::Black);
@@ -670,7 +672,8 @@ class WS2812FX {
       mode_chunchun(void),
       mode_dancing_shadows(void),
       mode_washing_machine(void),
-      mode_candy_cane(void);
+      mode_candy_cane(void),
+      mode_blends(void);
 
   private:
     NeoPixelWrapper *bus;
@@ -758,7 +761,7 @@ const char JSON_mode_names[] PROGMEM = R"=====([
 "Twinklefox","Twinklecat","Halloween Eyes","Solid Pattern","Solid Pattern Tri","Spots","Spots Fade","Glitter","Candle","Fireworks Starburst",
 "Fireworks 1D","Bouncing Balls","Sinelon","Sinelon Dual","Sinelon Rainbow","Popcorn","Drip","Plasma","Percent","Ripple Rainbow",
 "Heartbeat","Pacifica","Candle Multi", "Solid Glitter","Sunrise","Phased","Twinkleup","Noise Pal", "Sine","Phased Noise",
-"Flow","Chunchun","Dancing Shadows","Washing Machine","Candy Cane"
+"Flow","Chunchun","Dancing Shadows","Washing Machine","Candy Cane","Blends"
 ])=====";