From: Ash Tyndall <git@atyndall.net>
Date: Fri, 21 Oct 2011 01:39:03 +0000 (+0800)
Subject: (no commit message)
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=2813933dbf92ed25a4b00c514ad20c1893145538;p=atyndall%2Fcits2231.git

---

diff --git a/helper.c b/helper.c
index 9695093..b1b0d96 100644
--- a/helper.c
+++ b/helper.c
@@ -264,8 +264,18 @@ void drawLine() {
   glColor3f( 0.0, 0.0, 0.0 );
 
   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 );
+
+    // z arrow
     glVertex3i( 0.0, 0.0,  lineLength );
     glVertex3i( 0.0, 0.0, -lineLength );
   glEnd();