X-Git-Url: https://git.ucc.asn.au/?p=atyndall%2Fcits2231.git;a=blobdiff_plain;f=helper.c;h=0b5a8790ddb9ccd33f96b68f084232329b68c947;hp=29e0d72e9af90d79dbb901d461afdc77e66402e6;hb=0a1307fe36bf8e5c86664f93a5126c0d5debb1e7;hpb=0135f530575ab4fb093c9b33791e00a9824bb12d

diff --git a/helper.c b/helper.c
index 29e0d72..0b5a879 100644
--- a/helper.c
+++ b/helper.c
@@ -235,6 +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(1.0, 1.0, 1.0);
       glVertex3f(x1, 0.0, z1);
       glVertex3f(x1, 0.0, z2);
       glVertex3f(x2, 0.0, z2);
@@ -262,14 +263,30 @@ void drawLine() {
   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
   glColor3f( 0.0, 0.0, 0.0 );
 
+  float arrowLength = 0.1;
+
   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,  1.0 );
 
-  glBegin(GL_LINES);
-    glVertex3i( 0.0, 0.0,  lineLength );
-    glVertex3i( 0.0, 0.0, -lineLength );
+    glVertex3i(  lineLength, 0.0, 0.0 );
+    glVertex3i(  lineLength - arrowLength, 0.0, -1.0 );
+
+    // z arrow
+    glVertex3i(  0.0, 0.0,  lineLength );
+    glVertex3i(  0.0, 0.0, -lineLength );
+
+    // z arrowheads
+    glVertex3i(  0.0, 0.0,  lineLength );
+    glVertex3i(  1.0, 0.0,  lineLength - arrowLength );
+
+    glVertex3i(  0.0, 0.0,  lineLength );
+    glVertex3i( -1.0, 0.0,  lineLength - arrowLength );
   glEnd();
 
   glDisable(GL_BLEND);