revert, use different approach

Author: leeoniya

demos/nearest-non-null.html

@@ -335,25 +335,21 @@
 
 				let data = [
 					[0,1,2,3,4,5,6,7,8,9],
-					[5,5,5,5,_,_,5,5,5,5],
+					[5,5,5,5,5,_,5,5,5,5],
 				];
 
 				let opts = {
-					title: 'Snap hover points (and/or cusror) to previous non-null',
+					title: 'Snap hover points and cursor to previous non-null',
 					width: 1000,
 					height: 500,
 					cursor: {
-						// can use this if only snapping hover points, but keeping cursor at mouse coords
-						hover: {
-							bias: -1,
-							skip: [null],
-						},
-					/*
-						// OR...
+						y: false,
 
-						// this manually implements bias instead of relying on dataIdx/hover opts since they
-						// are invoked later (and currently depend on the output coords of cursor.move)
+						// this manually implements custom skipping and bias behavior
 						move: (u, mouseLeft, mouseTop) => {
+							if (mouseLeft < 0)
+								return [mouseLeft, mouseTop];
+
 							let curXVal = u.posToVal(mouseLeft, 'x');
 							let curIdx  = u.valToIdx(curXVal);
 							let dataX   = u.data[0];
@@ -376,7 +372,6 @@
 								mouseTop,
 							];
 						},
-					*/
 					},
 					scales: {
 						x: {

dist/uPlot.cjs.js

@@ -3508,6 +3508,8 @@ function uPlot(opts, data, then) {
 			if (seriesIdx == 0)
 				return cursorIdx;
 
+			let idx2 = cursorIdx;
+
 			let _prox = prox(self, seriesIdx, cursorIdx, valAtPosX) ?? inf;
 			let withProx = _prox >= 0 && _prox < inf;
 			let xDim = scaleX.ori == 0 ? plotWidCss : plotHgtCss;
@@ -3516,13 +3518,6 @@ function uPlot(opts, data, then) {
 			let xValues = data[0];
 			let yValues = data[seriesIdx];
 
-			if (bias == 1 && cursorIdx < dataLen - 1 && valAtPosX > xValues[cursorIdx])
-				cursorIdx++;
-			else if (bias == -1 && cursorIdx > 0 && valAtPosX < xValues[cursorIdx])
-				cursorIdx--;
-
-			let idx2 = cursorIdx;
-
 			if (skip.has(yValues[cursorIdx])) {
 				idx2 = null;
 

dist/uPlot.esm.js

@@ -3506,6 +3506,8 @@ function uPlot(opts, data, then) {
 			if (seriesIdx == 0)
 				return cursorIdx;
 
+			let idx2 = cursorIdx;
+
 			let _prox = prox(self, seriesIdx, cursorIdx, valAtPosX) ?? inf;
 			let withProx = _prox >= 0 && _prox < inf;
 			let xDim = scaleX.ori == 0 ? plotWidCss : plotHgtCss;
@@ -3514,13 +3516,6 @@ function uPlot(opts, data, then) {
 			let xValues = data[0];
 			let yValues = data[seriesIdx];
 
-			if (bias == 1 && cursorIdx < dataLen - 1 && valAtPosX > xValues[cursorIdx])
-				cursorIdx++;
-			else if (bias == -1 && cursorIdx > 0 && valAtPosX < xValues[cursorIdx])
-				cursorIdx--;
-
-			let idx2 = cursorIdx;
-
 			if (skip.has(yValues[cursorIdx])) {
 				idx2 = null;
 

dist/uPlot.iife.js

@@ -3509,6 +3509,8 @@ var uPlot = (function () {
 				if (seriesIdx == 0)
 					return cursorIdx;
 
+				let idx2 = cursorIdx;
+
 				let _prox = prox(self, seriesIdx, cursorIdx, valAtPosX) ?? inf;
 				let withProx = _prox >= 0 && _prox < inf;
 				let xDim = scaleX.ori == 0 ? plotWidCss : plotHgtCss;
@@ -3517,13 +3519,6 @@ var uPlot = (function () {
 				let xValues = data[0];
 				let yValues = data[seriesIdx];
 
-				if (bias == 1 && cursorIdx < dataLen - 1 && valAtPosX > xValues[cursorIdx])
-					cursorIdx++;
-				else if (bias == -1 && cursorIdx > 0 && valAtPosX < xValues[cursorIdx])
-					cursorIdx--;
-
-				let idx2 = cursorIdx;
-
 				if (skip.has(yValues[cursorIdx])) {
 					idx2 = null;
 

dist/uPlot.iife.min.js

@@ -893,6 +893,8 @@ export default function uPlot(opts, data, then) {
 			if (seriesIdx == 0)
 				return cursorIdx;
 
+			let idx2 = cursorIdx;
+
 			let _prox = prox(self, seriesIdx, cursorIdx, valAtPosX) ?? inf;
 			let withProx = _prox >= 0 && _prox < inf;
 			let xDim = scaleX.ori == 0 ? plotWidCss : plotHgtCss;
@@ -901,13 +903,6 @@ export default function uPlot(opts, data, then) {
 			let xValues = data[0];
 			let yValues = data[seriesIdx];
 
-			if (bias == 1 && cursorIdx < dataLen - 1 && valAtPosX > xValues[cursorIdx])
-				cursorIdx++;
-			else if (bias == -1 && cursorIdx > 0 && valAtPosX < xValues[cursorIdx])
-				cursorIdx--;
-
-			let idx2 = cursorIdx;
-
 			if (skip.has(yValues[cursorIdx])) {
 				idx2 = null;