29 files changed, 1185 insertions, 0 deletions

diff --git a/src/controller/exp004reshape.c b/src/controller/exp004reshape.c
new file mode 100644
index 0000000..7aaff08
--- a/dev/null
+++ b/src/controller/exp004reshape.c
@@ -0,0 +1,55 @@
+#include "exp004reshape.h"
+#include "../view/exp004state0.h"
+#include <GL/glut.h>
+
+void
+exp004reshape (int w, int h)
+{
+  glMatrixMode (GL_PROJECTION);
+  glLoadIdentity ();
+
+  /*
+   * This scaling produces an odd effect when the coordinates are not
+   * centered at 0,0.  When 0,0 is the lower left rather than the
+   * center this reshape is a bit unnatural since the image is not
+   * centered in the middle of the window.
+   */
+
+  if (w <= h)
+    {      
+      exp004state0.ortho.min_x = 
+        exp004state0.ortho_min;
+      exp004state0.ortho.max_x = 
+        exp004state0.ortho_max;
+      exp004state0.ortho.min_y = 
+        exp004state0.ortho_min * (GLfloat) h / (GLfloat) w;
+      exp004state0.ortho.max_y = 
+        exp004state0.ortho_max * (GLfloat) h / (GLfloat) w;
+    }
+  else
+    {
+      exp004state0.ortho.min_x =
+        exp004state0.ortho_min * (GLfloat) w / (GLfloat) h;
+      exp004state0.ortho.max_x =
+        exp004state0.ortho_max * (GLfloat) w / (GLfloat) h;
+      exp004state0.ortho.min_y =
+        exp004state0.ortho_min;
+      exp004state0.ortho.max_y =
+        exp004state0.ortho_max;
+    }
+
+  gluOrtho2D(exp004state0.ortho.min_x,
+             exp004state0.ortho.max_x,
+             exp004state0.ortho.min_y,
+             exp004state0.ortho.max_y);
+
+  glMatrixMode (GL_MODELVIEW);
+
+  // Set the viewport equal to the size of the window.
+  glViewport (0, 0, (GLsizei) w, (GLsizei) h);
+
+  exp004state0.viewport.w = w;
+  exp004state0.viewport.h = h;
+
+  return;
+}