X-Git-Url: https://git.ucc.asn.au/?p=atyndall%2Fcits2231.git;a=blobdiff_plain;f=helper.c;h=004da4330028af07ed20688baea05613d7947e7f;hp=4e03e1fb81247314b0d6fd334d382d4f303a515e;hb=9265bbe175893ed49376b406b64e5b7ecbd9234e;hpb=fc880a0c6714b7cf04a869f84419ef52f823cd01

diff --git a/helper.c b/helper.c
index 4e03e1f..004da43 100644
--- a/helper.c
+++ b/helper.c
@@ -235,7 +235,7 @@ void drawSquare(int recurseLevel, float x1, float z1, float x2, float z2) {
     // **NOTE: We're drawing large strips, instead of squares, which might cause a lighting problem
     glBegin(GL_QUADS);
       //glNormal3f(0,1,0);
-      glColor3f(0.0, 0.0, 0.0);
+      glColor3f(1.0, 1.0, 1.0);
       glVertex3f(x1, 0.0, z1);
       glVertex3f(x1, 0.0, z2);
       glVertex3f(x2, 0.0, z2);
@@ -263,12 +263,24 @@ void drawLine() {
   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
   glColor3f( 0.0, 0.0, 0.0 );
 
+  float arrowLength = 0.5;
+
   glBegin(GL_LINES);
+    // x arrow
     glVertex3i(  lineLength, 0.0, 0.0 );
     glVertex3i( -lineLength, 0.0, 0.0 );
-  glEnd();
+    
+    // x arrowheads
+    glVertex3i(  lineLength, 0.0, 0.0 );
+    glVertex3i(  lineLength - arrowLength, 0.0,  0.3 );
 
-  glBegin(GL_LINES);
+    glVertex3i(  lineLength, 0.0, 0.0 );
+    glVertex3i(  lineLength - arrowLength, 0.0, -0.3 );
+
+    glVertex3i( -lineLength, 0.0, 0.0 );
+    glVertex3i( -lineLength - arrowLength, 0.0,  0.3 );
+
+    // z arrow
     glVertex3i( 0.0, 0.0,  lineLength );
     glVertex3i( 0.0, 0.0, -lineLength );
   glEnd();