From 881b72e33ff5b03d281faabdc4f554bcea4eb307 Mon Sep 17 00:00:00 2001
From: shiwangwang <shiww@outlook.com>
Date: Sat, 28 Jul 2018 06:08:32 +0800
Subject: [PATCH] update barRect.size.height calculation

when bottom equals top, offset is not necessarily
---
 Source/Charts/Renderers/BarChartRenderer.swift | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/Charts/Renderers/BarChartRenderer.swift b/Source/Charts/Renderers/BarChartRenderer.swift
index 9427d5e39e..301fa8f30d 100644
--- a/Source/Charts/Renderers/BarChartRenderer.swift
+++ b/Source/Charts/Renderers/BarChartRenderer.swift
@@ -159,7 +159,7 @@ open class BarChartRenderer: BarLineScatterCandleBubbleRenderer
                 barRect.origin.x = left
                 barRect.size.width = right - left
                 barRect.origin.y = top
-                barRect.size.height = bottom - top + offset
+                barRect.size.height = bottom == top ? 0 : bottom - top + offset
 
                 buffer.rects[bufferIndex] = barRect
                 bufferIndex += 1