1 files changed, 53 insertions, 0 deletions
diff --git a/libdimension/ambient.c b/libdimension/ambient.c
new file mode 100644
index 0000000..916ba67
--- /dev/null
+++ b/libdimension/ambient.c
@@ -0,0 +1,53 @@
+/*************************************************************************
+ * Copyright (C) 2009 Tavian Barnes <tavianator@gmail.com>               *
+ *                                                                       *
+ * This file is part of The Dimension Library.                           *
+ *                                                                       *
+ * The Dimension Library is free software; you can redistribute it and/  *
+ * or modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Library is distributed in the hope that it will be      *
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty   *
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  *
+ * Lesser General Public License for more details.                       *
+ *                                                                       *
+ * You should have received a copy of the GNU Lesser General Public      *
+ * License along with this program.  If not, see                         *
+ * <http://www.gnu.org/licenses/>.                                       *
+ *************************************************************************/
+
+#include "dimension.h"
+#include <stdlib.h> /* For malloc */
+#include <math.h>
+
+/*
+ * Ambient finish
+ */
+
+static dmnsn_color
+dmnsn_ambient_finish_fn(const dmnsn_finish *finish, dmnsn_color pigment)
+{
+  dmnsn_color *ambient = finish->ptr;
+  return dmnsn_color_illuminate(*ambient, pigment);
+}
+
+dmnsn_finish *
+dmnsn_new_ambient_finish(dmnsn_color ambient)
+{
+  dmnsn_finish *finish = dmnsn_new_finish();
+  if (finish) {
+    dmnsn_color *param = malloc(sizeof(dmnsn_color));
+    if (!param) {
+      dmnsn_delete_finish(finish);
+      return NULL;
+    }
+
+    *param = ambient;
+    finish->ptr        = param;
+    finish->ambient_fn = &dmnsn_ambient_finish_fn;
+    finish->free_fn    = &free;
+  }
+  return finish;
+}