From a73bfc78d5ebac0c1cb851ed8b619fbd13acea9c Mon Sep 17 00:00:00 2001 From: Ash Tyndall Date: Fri, 21 Oct 2011 09:43:57 +0800 Subject: [PATCH] --- helper.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/helper.c b/helper.c index b1b0d96..b80a513 100644 --- a/helper.c +++ b/helper.c @@ -263,17 +263,16 @@ void drawLine() { glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glColor3f( 0.0, 0.0, 0.0 ); + float arrowLength = 1.0; + glBegin(GL_LINES); // x arrow glVertex3i( lineLength, 0.0, 0.0 ); glVertex3i( -lineLength, 0.0, 0.0 ); // x arrowheads - glVertex3i( lineLength - 1, 0.0, 0.0 ); - glVertex3i( -lineLength - 1, 0.0, 0.0 ); - - glVertex3i( lineLength - 1, 0.0, 0.0 ); - glVertex3i( -lineLength + 1, 0.0, 0.0 ); + glVertex3i( lineLength, 0.0, 0.0 ); + glVertex3i( lineLength - arrowLength, 0.0, arrowLength ); // z arrow glVertex3i( 0.0, 0.0, lineLength ); -- 2.20.1