From 8f889f22d854704ea4f472bb950daf2fdb15385b Mon Sep 17 00:00:00 2001
From: Don Pellegrino <don@drexel.edu>
Date: Tue, 16 Jun 2009 23:23:48 +0000
Subject: Added zoom feature - current incomplete.

---
diff --git a/src/controller/exp004mouse.c b/src/controller/exp004mouse.c
index 8e8f986..72791d5 100644
--- a/src/controller/exp004mouse.c
+++ b/src/controller/exp004mouse.c
@@ -1,5 +1,6 @@
 #include "exp004mouse.h"
 #include "exp004processhits.h"
+#include "exp004reshape.h"
 #include "../view/exp004geometry.h"
 #include "../view/exp004state0.h"
 #include "../util/check_error.h"
@@ -17,10 +18,31 @@ exp004mouse (int button, int state, int x, int y)
 {
   if (button == GLUT_LEFT_BUTTON && state == GLUT_UP)
     {
+      if (S.selecting == true && S.zoom == true)
+	{
+	  GLint viewport[4];
+	  glGetIntegerv (GL_VIEWPORT, viewport);
+
+	  glMatrixMode (GL_PROJECTION);
+	  glLoadIdentity ();
+
+	  /*
+	   * Convert the selection boundary from window coordinates to
+	   * world coordinates.
+	   */
+
+	  gluOrtho2D(-20.0,
+		     20.0,
+		     -20.0,
+		     20.0);      
+
+	  glutPostRedisplay ();
+	}
+
       /*
        * Complete a selection if one was started and not cancelled.
        */
-      if (S.selecting == true)
+      if (S.selecting == true && S.zoom == false)
 	{
 	  
 	  /*
@@ -57,14 +79,6 @@ exp004mouse (int button, int state, int x, int y)
 	  GLint viewport[4];
 	  glGetIntegerv (GL_VIEWPORT, viewport);
 	  
-	  /*
-	  gluPickMatrix ((GLdouble) x,
-			 (GLdouble) (viewport[3] - y),
-			 N,
-			 N,
-			 viewport);
-	  */
-
 	  double c_x = 0.0;
 	  double c_y = 0.0;
 	  double w = 0.0;
--
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