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-rw-r--r--libdimension/ambient.c53
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diff --git a/libdimension/ambient.c b/libdimension/ambient.c
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+/*************************************************************************
+ * 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;
+}