Add easy segment mirroring (closes #1010)

CHANGELOG.md

@@ -2,6 +2,11 @@
 
 ### Development versions after 0.10.0 release
 
+#### Build 2008200
+
+-   Added segment mirroring to web UI
+-   Fixed segment mirroring when in reverse mode
+
 #### Build 2008140
 
 -   Removed verbose live mode info from `<ds>` in HTTP API response

wled00/FX.h

@@ -269,7 +269,7 @@ class WS2812FX {
         uint16_t groupLen = groupLength();
         uint16_t vLength = (length() + groupLen - 1) / groupLen;
         if (options & MIRROR)
-          vLength = (vLength + 1) /2;  // divide by 2 if mirror, leave at least a signle LED
+          vLength = (vLength + 1) /2;  // divide by 2 if mirror, leave at least a single LED
         return vLength;
       }
     } segment;
@@ -450,7 +450,7 @@ class WS2812FX {
       setRgbwPwm(void);
 
     bool
-      reverseMode = false,
+      reverseMode = false,      //is the entire LED strip reversed?
       gammaCorrectBri = false,
       gammaCorrectCol = true,
       applyToAllSelected = true,

wled00/FX_fcn.cpp

@@ -106,20 +106,25 @@ void WS2812FX::setPixelColor(uint16_t n, uint32_t c) {
   setPixelColor(n, r, g, b, w);
 }
 
+#define REV(i) (_length - 1 - (i))
+
+//used to map from segment index to physical pixel, taking into account grouping, offsets, reverse and mirroring
 uint16_t WS2812FX::realPixelIndex(uint16_t i) {
   int16_t iGroup = i * SEGMENT.groupLength();
 
   /* reverse just an individual segment */
   int16_t realIndex = iGroup;
-  if (IS_REVERSE)
+  if (IS_REVERSE) {
-    if (IS_MIRROR)
+    if (IS_MIRROR) {
-      realIndex = SEGMENT.length() / 2 - iGroup - 1;  //only need to index half the pixels
+      realIndex = (SEGMENT.length() -1) / 2 - iGroup;  //only need to index half the pixels
-    else
+    } else {
       realIndex = SEGMENT.length() - iGroup - 1;
+    }
+  }
 
   realIndex += SEGMENT.start;
   /* Reverse the whole string */
-  if (reverseMode) realIndex = _length - 1 - realIndex;
+  if (reverseMode) realIndex = REV(realIndex);
 
   return realIndex;
 }
@@ -176,18 +181,23 @@ void WS2812FX::setPixelColor(uint16_t i, byte r, byte g, byte b, byte w)
     for (uint16_t j = 0; j < SEGMENT.grouping; j++) {
       int16_t indexSet = realIndex + (reversed ? -j : j);
       int16_t indexSetRev = indexSet;
-      if (reverseMode) indexSetRev = _length - 1 - indexSet;
+      if (reverseMode) indexSetRev = REV(indexSet);
       #ifdef WLED_CUSTOM_LED_MAPPING
       if (indexSet < customMappingSize) indexSet = customMappingTable[indexSet];
       #endif
       if (indexSetRev >= SEGMENT.start && indexSetRev < SEGMENT.stop) {
         bus->SetPixelColor(indexSet + skip, col);
-        if (IS_MIRROR)  //set the corresponding mirrored pixel
+        if (IS_MIRROR) { //set the corresponding mirrored pixel
-          bus->SetPixelColor(SEGMENT.stop - (indexSet + skip) + SEGMENT.start - 1, col);
+          if (reverseMode) {
+            bus->SetPixelColor(REV(SEGMENT.start) - indexSet + skip + REV(SEGMENT.stop) + 1, col);
+          } else {
+            bus->SetPixelColor(SEGMENT.stop - indexSet + skip + SEGMENT.start - 1, col);
+          }
+        }
       }
     }
   } else { //live data, etc.
-    if (reverseMode) i = _length - 1 - i;
+    if (reverseMode) i = REV(i);
     #ifdef WLED_CUSTOM_LED_MAPPING
     if (i < customMappingSize) i = customMappingTable[i];
     #endif

wled00/data/index.htm

@@ -478,26 +478,6 @@ input[type=range]::-moz-range-thumb {
 	background: var(--c-f);
 	transform: translateY(7px);
 }
-input[type=range]::-ms-track {
-	width: 100%;
-	height: 30px;
-	background: transparent;
-	border-color: transparent;
-	color: transparent;
-}
-input[type=range]::-ms-fill-lower {
-	background: transparent;
-}
-input[type=range]::-ms-fill-upper {
-	background: transparent;
-}
-input[type=range]::-ms-thumb {
-	height: 16px;
-	width: 16px;
-	border-radius: 16px;
-	background: var(--c-f);
-	margin-top: -12px;
-}
 
 #wwrap {
 	display: none;
@@ -1422,6 +1402,11 @@ function populateSegments(s)
 					<input type="checkbox" id="seg${i}rev" onchange="setRev(${i})" ${inst.rev ? "checked":""}>
 					<span class="checkmark schk"></span>
 				</label>
+				<label class="check revchkl">
+					Mirror effect
+					<input type="checkbox" id="seg${i}mi" onchange="setMi(${i})" ${inst.mi ? "checked":""}>
+					<span class="checkmark schk"></span>
+				</label>
 			</div>
 		</div><br>`;
 	}
@@ -1783,6 +1768,12 @@ function setRev(s){
 	requestJson(obj, false);
 }
 
+function setMi(s){
+	var mi = d.getElementById(`seg${s}mi`).checked;
+	var obj = {"seg": {"id": s, "mi": mi}};
+	requestJson(obj, false);
+}
+
 function setSegPwr(s){
 	var obj = {"seg": {"id": s, "on": !powered[s]}};
 	requestJson(obj);

wled00/wled.h

@@ -8,7 +8,7 @@
  */
 
 // version code in format yymmddb (b = daily build)
-#define VERSION 2008100
+#define VERSION 2008200
 
 // ESP8266-01 (blue) got too little storage space to work with all features of WLED. To use it, you must use ESP8266 Arduino Core v2.4.2 and the setting 512K(No SPIFFS).