Add support for lights.

1 files changed, 47 insertions, 0 deletions

diff --git a/libdimension/dimension/light.h b/libdimension/dimension/light.h
new file mode 100644
index 0000000..089af89
--- /dev/null
+++ b/libdimension/dimension/light.h
@@ -0,0 +1,47 @@
+/*************************************************************************
+ * 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/>.                                       *
+ *************************************************************************/
+
+/*
+ * Lights.
+ */
+
+#ifndef DIMENSION_LIGHT_H
+#define DIMENSION_LIGHT_H
+
+typedef struct dmnsn_light dmnsn_light;
+
+typedef dmnsn_color dmnsn_light_fn(const dmnsn_light *light, dmnsn_vector v);
+
+struct dmnsn_light {
+  /* Origin of light rays */
+  dmnsn_vector x0;
+
+  /* Callbacks */
+  dmnsn_light_fn *light_fn;
+  dmnsn_free_fn  *free_fn;
+
+  /* Generic pointer for light info */
+  void *ptr;
+};
+
+dmnsn_light *dmnsn_new_light();
+void dmnsn_delete_light(dmnsn_light *light);
+
+#endif /* DIMENSION_LIGHT_H */