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authorTavian Barnes <tavianator@gmail.com>2009-11-09 15:20:58 -0500
committerTavian Barnes <tavianator@gmail.com>2009-11-09 16:07:33 -0500
commit5138e55d3eb41255b1436d40ceba134876c3c5cd (patch)
tree5a3e00248c328b097c4b71e225c597d19a372363 /libdimension/finishes.c
parent319491781c1389d82897075b6d890e74d82a08a9 (diff)
downloaddimension-5138e55d3eb41255b1436d40ceba134876c3c5cd.tar.xz
Add support for finishes (BRDFs).
Diffstat (limited to 'libdimension/finishes.c')
-rw-r--r--libdimension/finishes.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/libdimension/finishes.c b/libdimension/finishes.c
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+++ b/libdimension/finishes.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 */
+
+static dmnsn_color
+dmnsn_specular_finish_fn(const dmnsn_finish *finish,
+ dmnsn_color color, dmnsn_vector x0,
+ dmnsn_vector normal, dmnsn_vector reflected)
+{
+ return dmnsn_color_mul(dmnsn_vector_dot(normal, reflected), color);
+}
+
+/* A specular finish */
+dmnsn_finish *
+dmnsn_new_specular_finish()
+{
+ dmnsn_finish *finish = dmnsn_new_finish();
+ if (finish) {
+ finish->finish_fn = &dmnsn_specular_finish_fn;
+ }
+ return finish;
+}