From f56ca35493f46759e317ee1c2d093ae7c1cdd60c Mon Sep 17 00:00:00 2001
From: n-gist <58081918+n-gist@users.noreply.github.com>
Date: Tue, 16 May 2023 15:12:32 +0600
Subject: [PATCH 1/3] crosshair out of bounds selection filter

---
 src/extras/crosshair.js | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/extras/crosshair.js b/src/extras/crosshair.js
index 108403778..697008f55 100644
--- a/src/extras/crosshair.js
+++ b/src/extras/crosshair.js
@@ -66,12 +66,15 @@ Dygraph.Plugins.Crosshair = (function _extras_crosshair_closure() {
     ctx.clearRect(0, 0, width, height);
     ctx.strokeStyle = this.strokeStyle_;
     ctx.beginPath();
-
-    var canvasx = Math.floor(e.dygraph.selPoints_[0].canvasx) + 0.5; // crisper rendering
-
-    if (this.direction_ === "vertical" || this.direction_ === "both") {
-      ctx.moveTo(canvasx, 0);
-      ctx.lineTo(canvasx, height);
+    
+    var point = e.dygraph.selPoints_[0];
+    if (point.x >= 0 && point.x <= 1) {
+      var canvasx = Math.floor(e.dygraph.selPoints_[0].canvasx) + 0.5; // crisper rendering
+  
+      if (this.direction_ === "vertical" || this.direction_ === "both") {
+        ctx.moveTo(canvasx, 0);
+        ctx.lineTo(canvasx, height);
+      }
     }
 
     if (this.direction_ === "horizontal" || this.direction_ === "both") {

From 8246591cfc4087e271f4a79bc05b94c79958a1e0 Mon Sep 17 00:00:00 2001
From: n-gist <58081918+n-gist@users.noreply.github.com>
Date: Sat, 20 May 2023 19:22:14 +0600
Subject: [PATCH 2/3] check horizontal lines also

---
 src/extras/crosshair.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/extras/crosshair.js b/src/extras/crosshair.js
index 697008f55..6ec7ad33e 100644
--- a/src/extras/crosshair.js
+++ b/src/extras/crosshair.js
@@ -67,8 +67,8 @@ Dygraph.Plugins.Crosshair = (function _extras_crosshair_closure() {
     ctx.strokeStyle = this.strokeStyle_;
     ctx.beginPath();
     
-    var point = e.dygraph.selPoints_[0];
-    if (point.x >= 0 && point.x <= 1) {
+    var p_x = e.dygraph.selPoints_[0];
+    if (p_x.x >= 0 && p_x.x <= 1) {
       var canvasx = Math.floor(e.dygraph.selPoints_[0].canvasx) + 0.5; // crisper rendering
   
       if (this.direction_ === "vertical" || this.direction_ === "both") {
@@ -79,7 +79,9 @@ Dygraph.Plugins.Crosshair = (function _extras_crosshair_closure() {
 
     if (this.direction_ === "horizontal" || this.direction_ === "both") {
       for (var i = 0; i < e.dygraph.selPoints_.length; i++) {
-        var canvasy = Math.floor(e.dygraph.selPoints_[i].canvasy) + 0.5; // crisper rendering
+        var p_y = e.dygraph.selPoints_[i];
+        if (p_y.y < 0 || p_y > 1) continue;
+        var canvasy = Math.floor(p_y.canvasy) + 0.5; // crisper rendering
         ctx.moveTo(0, canvasy);
         ctx.lineTo(width, canvasy);
       }

From 7d7955b4c425163e62816a92fa66197cd9552d43 Mon Sep 17 00:00:00 2001
From: n-gist <58081918+n-gist@users.noreply.github.com>
Date: Sat, 20 May 2023 19:25:17 +0600
Subject: [PATCH 3/3] use created variable

---
 src/extras/crosshair.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/extras/crosshair.js b/src/extras/crosshair.js
index 6ec7ad33e..e74a55764 100644
--- a/src/extras/crosshair.js
+++ b/src/extras/crosshair.js
@@ -69,7 +69,7 @@ Dygraph.Plugins.Crosshair = (function _extras_crosshair_closure() {
     
     var p_x = e.dygraph.selPoints_[0];
     if (p_x.x >= 0 && p_x.x <= 1) {
-      var canvasx = Math.floor(e.dygraph.selPoints_[0].canvasx) + 0.5; // crisper rendering
+      var canvasx = Math.floor(p_x.canvasx) + 0.5; // crisper rendering
   
       if (this.direction_ === "vertical" || this.direction_ === "both") {
         ctx.moveTo(canvasx, 0);