X-Git-Url: https://git.ucc.asn.au/?p=atyndall%2Fcits2231.git;a=blobdiff_plain;f=helper.c;h=404094752514a120a13e43ca4fc58f7dd8ccb814;hp=d685e5191721999f95be78f41240b4035eb6fd25;hb=04b80f76711fefed66b740898072a6a1fd51171d;hpb=d3465c5cd0e6e9b414e669e8c8aa464b03f2fd24

diff --git a/helper.c b/helper.c
index d685e51..4040947 100644
--- a/helper.c
+++ b/helper.c
@@ -216,7 +216,6 @@ int makeSubmenuFromArray( const char *menuEntries[], unsigned int menuEntriesSiz
  * @param z2 bottom-left z
  */
 void drawSquare(int recurseLevel, float x1, float z1, float x2, float z2) {
-
   if ( drawFloorRecurse != recurseLevel ) {
     // Calculate middle points
     float xm = (x1 + x2) / 2.0;
@@ -233,15 +232,16 @@ void drawSquare(int recurseLevel, float x1, float z1, float x2, float z2) {
 
   } else {
     // Draw square.
-    // **NOTE: Is the polygon facing in the right direction?
+    // **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);
       glVertex3f(x2, 0.0, z1);
     glEnd();
   }
-
 }
 
 /**
@@ -255,17 +255,41 @@ void drawFloor() {
  * Draw x, z axis on floor
  */
 void drawLine() {
-    // **NOTE: fix function
-    glDisable(GL_TEXTURE_2D);
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-    glColor4ub( 0.0, 0.0, 0.0, 0.5 );
-
-    glBegin(GL_LINES);
-    glVertex3i( 10.0, 0.1, 10.0);
-    glVertex3i( -10.0, 0.1, -10.0);
-    glEnd();
-
-    glDisable(GL_BLEND);
-    glEnable(GL_TEXTURE_2D);
+  // **NOTE: Function does not currently draw arrow-heads
+
+  glDisable(GL_TEXTURE_2D);
+  glDisable(GL_LIGHTING);
+  glEnable(GL_BLEND);
+  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, 0.0, 0.0 );
+    glVertex3i(  lineLength - arrowLength, 0.0,  1.0 );
+
+    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);
+  glEnable(GL_LIGHTING);
+  glEnable(GL_TEXTURE_2D);
 }
\ No newline at end of file