Use GL_LINE_STRIP rather than GL_LINE_LOOP when drawing an ellipsoid in PLANE...

Use GL_LINE_STRIP rather than GL_LINE_LOOP when drawing an ellipsoid in PLANE style.  Make usetextaxes work for ellipsoids too.

src/partibrains.c

@@ -16,6 +16,9 @@ static char copyright[] = "Copyright (c) 2002 NCSA, University of Illinois Urban
 
 /*
  * $Log$
+ * Revision 1.132  2017/08/01 21:13:54  slevy
+ * Use GL_LINE_STRIP rather than GL_LINE_LOOP when drawing an ellipsoid in PLANE style.  Make usetextaxes work for ellipsoids too.
+ *
  * Revision 1.131  2013/11/30 21:33:08  slevy
  * Tidy.
  *
@@ -3044,7 +3047,7 @@ void drawspecks( struct stuff *st )
 
   if(st->usetext && st->textsize != 0) {
     int cment = -1;
-    int textmin = abs(st->textmin);
+    int textmin = fabsf(st->textmin);
     int label_stubs = (st->textmin < 0);
     glColor3f(1,1,1);
 
@@ -3235,20 +3238,33 @@ void specks_draw_ellipsoid( struct stuff *st, struct ellipsoid *e )
 	glEnd();
     }
     break;
-    
+
   case S_PLANE:
-    glBegin( GL_LINE_LOOP );
-    for(u = 0; u < nu; u++)
+    glBegin( GL_LINE_STRIP );
+    for(u = 0; u < nu/2; u++)
 	glVertex3f( cu[u], su[u], 0 );
     glEnd();
-    glBegin( GL_LINE_LOOP );
-    for(u = 0; u < nu; u++)
+    glBegin( GL_LINE_STRIP );
+    for(u = 0; u < nu/2; u++)
 	glVertex3f( cu[u], 0, su[u] );
     glEnd();
-    glBegin( GL_LINE_LOOP );
-    for(u = 0; u < nu; u++)
+    glBegin( GL_LINE_STRIP );
+    for(u = 0; u < nu/2; u++)
 	glVertex3f( 0, cu[u], su[u] );
     glEnd();
+
+    if(st->usetextaxes) {
+	static unsigned char col[3][3] = {255,0,0, 0,255,0, 0,0,255};
+	int k;
+	glBegin(GL_LINES);
+	for(k = 0; k < 3; k++) {
+	    glColor3ubv( &col[k][0] );
+	    glVertex3f( 0,0,0 );
+	    glVertex3f( k==0?1:0, k==1?1:0, k==2?1:0 );
+	}
+	glEnd();
+    }
+
     break;
 
   case S_POINT: