Add physical ledmap support + tiny changes

index.js, FX_fcn.cpp
- add physical ledmaps (lmPxyz.json)

wled00/data/index.js

@@ -1324,20 +1324,33 @@ function drawSegmentView() {
 	if (ledmapNr>=0 && ctx) { //WLEDMM: @Troy#2642 : include ledmap = 0 as default ledmap
 		// console.log("Before fetch ledmap ", lastinfo.ledmap);
 		var fileName;
+		let isPhysicalMap = false;
 		if (ledmapNr==0)
 			fileName = "ledmap.json"; //0 is ledmap.json, not ledmap0.json
 		else if (ledmapNr<10)
 			fileName = "ledmap"+ledmapNr+".json";
-		else
+		else {
 			fileName = ledmapFileNames[ledmapNr-10];
+			isPhysicalMap = fileName.charAt(2) == "P";
+		}
 		fetchAndExecute((loc?`http://${locip}`:'.') + "/", fileName , function(text) {
 			var ledmapJson = JSON.parse(text);
 			var counter = 0;
 			var noMap = [];
 			for (let i=0;i<maxWidth * maxHeight;i++) noMap.push(i); //initially add all pixels in array
 			var colorArray = ["yellow",     "green",     "magenta",   "orange"];
-			for (let i=0;i<ledmapJson["map"].length;i++) {
-				let mapIndex = ledmapJson["map"][i];
+
+			var customMappingTable = [];
+			if (!isPhysicalMap) {
+				customMappingTable = ledmapJson["map"];
+			} else {
+				for (let i=0;i<maxWidth * maxHeight;i++) customMappingTable.push(-1); //init with noshow
+				for (let i=0;i<maxWidth * maxHeight;i++)
+					if (ledmapJson["map"][i]>=0) customMappingTable[ledmapJson["map"][i]] = i;
+			}
+
+			for (let i=0;i<customMappingTable.length;i++) {
+				let mapIndex = customMappingTable[i];
 				if (mapIndex != -1) {
 					ctx.font = parseInt(ppL/3) + 'px Arial'; 
 					ctx.fillStyle = "white";