From 69232edc2c5af146c86df56834dc7b4fc0c0e3ae Mon Sep 17 00:00:00 2001
From: sz-p <sz_p@outlook.com>
Date: Tue, 24 Sep 2024 19:20:49 +0800
Subject: [PATCH 1/3] fix: #20363 The polar coord clip should include center
 point in scatter

---
 src/coord/polar/Polar.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/coord/polar/Polar.ts b/src/coord/polar/Polar.ts
index e7b9db6cce..43f63a75f4 100644
--- a/src/coord/polar/Polar.ts
+++ b/src/coord/polar/Polar.ts
@@ -228,12 +228,12 @@ class Polar implements CoordinateSystem, CoordinateSystemMaster {
                 // Start angle and end angle don't matter
                 const dx = x - this.cx;
                 const dy = y - this.cy;
-                // minus a tiny value 1e-4 to avoid being clipped unexpectedly
-                const d2 = dx * dx + dy * dy - 1e-4;
+                const d2 = dx * dx + dy * dy;
                 const r = this.r;
                 const r0 = this.r0;
 
-                return d2 <= r * r && d2 >= r0 * r0;
+                // minus a tiny value 1e-4 in double side to avoid being clipped unexpectedly
+                return (d2 - 1e-4) <= r * r && (d2 + 1e-4) >= r0 * r0;
             }
         };
     }

From b0ef6c80205978149f01d54c317ea8789649b819 Mon Sep 17 00:00:00 2001
From: sz-p <sz_p@outlook.com>
Date: Tue, 24 Sep 2024 19:21:08 +0800
Subject: [PATCH 2/3] test: #20363 The polar coord clip should include center
 point in scatter

---
 test/clip.html | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/test/clip.html b/test/clip.html
index 508375bfac..977bc8fa98 100644
--- a/test/clip.html
+++ b/test/clip.html
@@ -1434,5 +1434,44 @@
                 });
             });
         </script>
+
+        <div class="chart" id="polar-clip"></div>
+        <script>
+            require([
+                'echarts'
+            ], function (echarts) {
+                var option = {
+                    polar: {
+                        center: ['50%', '54%']
+                    },
+                    angleAxis: {
+                        type: 'category',
+                        data: ['a', 'b', 'c'],
+                        boundaryGap: false,
+                    },
+                    radiusAxis: {
+                        min: 0
+                    },
+                    series: [{
+                        coordinateSystem: 'polar',
+                        symbolSize: 20,
+                        name: 'line',
+                        type: 'scatter',
+                        showSymbol: true,
+                        data: [
+                            [0, 0],
+                            [10, 2]
+                        ]
+                    }]
+                };
+                var chart = testHelper.create(echarts, 'polar-clip', {
+                    title: [
+                        'The polar coord clip should include center point in scatter'
+                    ],
+                    option: option,
+                    height: 400
+                });
+            });
+        </script>
     </body>
 </html>

From 80438d224e55d7e0ce6f542af6574aa6a0878d3b Mon Sep 17 00:00:00 2001
From: sz-p <sz_p@outlook.com>
Date: Wed, 25 Sep 2024 20:02:59 +0800
Subject: [PATCH 3/3] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=20The=20polar=20c?=
 =?UTF-8?q?oord=20clip=20should=20include=20center=20point=20in=20scatter?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/coord/polar/Polar.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/coord/polar/Polar.ts b/src/coord/polar/Polar.ts
index 43f63a75f4..b34d0a8f92 100644
--- a/src/coord/polar/Polar.ts
+++ b/src/coord/polar/Polar.ts
@@ -214,7 +214,7 @@ class Polar implements CoordinateSystem, CoordinateSystemMaster {
         const angleExtent = angleAxis.getExtent();
 
         const RADIAN = Math.PI / 180;
-
+        const EPSILON = 1e-4;
         return {
             cx: this.cx,
             cy: this.cy,
@@ -233,7 +233,8 @@ class Polar implements CoordinateSystem, CoordinateSystemMaster {
                 const r0 = this.r0;
 
                 // minus a tiny value 1e-4 in double side to avoid being clipped unexpectedly
-                return (d2 - 1e-4) <= r * r && (d2 + 1e-4) >= r0 * r0;
+                // r == r0 contain nothing
+                return r !== r0 && (d2 - EPSILON) <= r * r && (d2 + EPSILON) >= r0 * r0;
             }
         };
     }