Added zoom feature - current incomplete.

1 files changed, 23 insertions, 9 deletions

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;