36 files changed, 332 insertions, 176 deletions

diff --git a/src/controller/actions/clear_selection.sqc b/src/controller/actions/clear_selection.sqc
new file mode 100644
index 0000000..e527c30
--- a/dev/null
+++ b/src/controller/actions/clear_selection.sqc
@@ -0,0 +1,53 @@
+#define GL_GLEXT_PROTOTYPES
+#include "clear_selection.h"
+#include "../../model/geometry/map_geometry.h"
+#include "../../view/exp004state0.h"
+#include <GL/glut.h>
+#include "sqlca.h"
+extern struct sqlca sqlca;
+
+/*
+ * A simple alias to make the code more readable.
+ */
+#define S exp004state0
+
+void
+clear_selection (void)
+{
+  /*
+   * WHERE gi IS NOT NULL is added to prevent the PRECOMPILE command
+   * from throwing a warning about modifying an entire table.  Since
+   * gi is defined as NOT NULL this will clear the entire table.
+   */
+  EXEC SQL DELETE FROM vis_selection WHERE gi IS NOT NULL;
+
+  EXEC SQL COMMIT;
+
+  for (unsigned int i = 0; i < S.rows; i++)
+    {
+      S.selection.set[i] = false;
+      float *c = S.base_colors_data + (i * 4);
+      *c = DEFAULT_COLOR_R;
+      c++;
+      *c = DEFAULT_COLOR_G;
+      c++;
+      *c = DEFAULT_COLOR_B;
+      c++;
+      *c = DEFAULT_COLOR_A;
+    }
+
+  glBindBuffer (GL_ARRAY_BUFFER, S.buffers[BASE_COLORS]);
+  glColorPointer (4, GL_FLOAT, 0, 0);
+  glBufferData (GL_ARRAY_BUFFER,
+                sizeof (S.base_colors_data), S.base_colors_data,
+                GL_STATIC_DRAW);
+
+  /*
+   * Rebuild the display list for the map.
+   */
+  map_geometry ();
+
+  glutPostRedisplay ();
+
+  return;
+}