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[atyndall/cits2231.git] / helper.c

diff --git a/helper.c b/helper.c
index 4e03e1f..460c44a 100644 (file)
--- 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);
@@ -254,23 +254,40 @@ void drawFloor() {
 /**
  * Draw x, z axis on floor
  */
-void drawLine() {
+void drawAxisLines() {
   // **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);
+  glEnable(GL_LINE_SMOOTH);
   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 );
-  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);