From aad596b96bb9a78d417afc3fd22646973fd3f209 Mon Sep 17 00:00:00 2001
From: Andreas Ganske <a.ganske@chaosspace.de>
Date: Fri, 8 Jun 2018 00:13:22 +0200
Subject: [PATCH] Do not respond to touch if point is outside the cropped
 circle

---
 RSColorPicker/ColorPickerClasses/RSColorPickerView.m | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/RSColorPicker/ColorPickerClasses/RSColorPickerView.m b/RSColorPicker/ColorPickerClasses/RSColorPickerView.m
index db012e2..503d7ab 100755
--- a/RSColorPicker/ColorPickerClasses/RSColorPickerView.m
+++ b/RSColorPicker/ColorPickerClasses/RSColorPickerView.m
@@ -403,6 +403,17 @@ - (RSColorPickerState *)stateForPoint:(CGPoint)point {
     return newState;
 }
 
+- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event {
+    if (!self.cropToCircle) {
+        return [super pointInside:point withEvent:event];
+    }
+    
+    CGFloat X = point.x - CGRectGetMidX(self.bounds);
+    CGFloat Y = point.y - CGRectGetMidY(self.bounds);
+    CGFloat r = sqrt(pow(X, 2) + pow(Y, 2));
+    return [super pointInside:point withEvent:event] && r < self.paletteDiameter / 2;
+}
+
 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
 
     if (self.showLoupe) {