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authorTavian Barnes <tavianator@gmail.com>2010-01-06 13:43:14 -0500
committerTavian Barnes <tavianator@gmail.com>2010-01-06 13:43:14 -0500
commit4e2a6e40a77068492e3b63b84a18d0cc7f003fb7 (patch)
tree3456c6c4426092f40c039a48c82a161e49419bf9 /libdimension/finish_combination.c
parent2fab7d7ff6b926e79c35be3e59b42e733f8bf33c (diff)
downloaddimension-4e2a6e40a77068492e3b63b84a18d0cc7f003fb7.tar.xz
Split up objects, finishes, pigments, lights, cameras, etc.
Diffstat (limited to 'libdimension/finish_combination.c')
-rw-r--r--libdimension/finish_combination.c112
1 files changed, 112 insertions, 0 deletions
diff --git a/libdimension/finish_combination.c b/libdimension/finish_combination.c
new file mode 100644
index 0000000..045db96
--- /dev/null
+++ b/libdimension/finish_combination.c
@@ -0,0 +1,112 @@
+/*************************************************************************
+ * 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>
+
+/*
+ * Finish combinations
+ */
+
+static dmnsn_color
+dmnsn_finish_combination_fn(const dmnsn_finish *finish,
+ dmnsn_color light, dmnsn_color color,
+ dmnsn_vector ray, dmnsn_vector normal,
+ dmnsn_vector viewer)
+{
+ dmnsn_finish **params = finish->ptr;
+ if (params[0]->finish_fn && params[1]->finish_fn) {
+ return dmnsn_color_add((*params[0]->finish_fn)(params[0], light, color, ray,
+ normal, viewer),
+ (*params[1]->finish_fn)(params[1], light, color, ray,
+ normal, viewer));
+ } else if (params[0]->finish_fn) {
+ return (*params[0]->finish_fn)(params[0], light, color, ray,
+ normal, viewer);
+ } else if (params[1]->finish_fn) {
+ return (*params[1]->finish_fn)(params[1], light, color, ray,
+ normal, viewer);
+ } else {
+ return dmnsn_black;
+ }
+}
+
+static dmnsn_color
+dmnsn_finish_combination_ambient_fn(const dmnsn_finish *finish,
+ dmnsn_color pigment)
+{
+ dmnsn_finish **params = finish->ptr;
+ if (params[0]->ambient_fn && params[1]->ambient_fn) {
+ return dmnsn_color_add((*params[0]->ambient_fn)(params[0], pigment),
+ (*params[1]->ambient_fn)(params[1], pigment));
+ } else if (params[0]->ambient_fn) {
+ return (*params[0]->ambient_fn)(params[0], pigment);
+ } else if (params[1]->ambient_fn) {
+ return (*params[1]->ambient_fn)(params[1], pigment);
+ } else {
+ return dmnsn_black;
+ }
+}
+
+static void
+dmnsn_finish_combination_free_fn(void *ptr)
+{
+ dmnsn_finish **params = ptr;
+ dmnsn_delete_finish(params[0]);
+ dmnsn_delete_finish(params[1]);
+ free(ptr);
+}
+
+dmnsn_finish *
+dmnsn_new_finish_combination(dmnsn_finish *f1, dmnsn_finish *f2)
+{
+ if (f1 && f2) {
+ dmnsn_finish *finish = dmnsn_new_finish();
+ if (finish) {
+ dmnsn_finish **params = malloc(2*sizeof(dmnsn_finish *));
+ if (!params) {
+ dmnsn_delete_finish(finish);
+ dmnsn_delete_finish(f2);
+ dmnsn_delete_finish(f1);
+ return NULL;
+ }
+
+ params[0] = f1;
+ params[1] = f2;
+
+ finish->ptr = params;
+ finish->finish_fn = &dmnsn_finish_combination_fn;
+ finish->ambient_fn = &dmnsn_finish_combination_ambient_fn;
+ finish->free_fn = &dmnsn_finish_combination_free_fn;
+
+ return finish;
+ } else {
+ dmnsn_delete_finish(f2);
+ dmnsn_delete_finish(f1);
+ }
+ } else if (f1) {
+ dmnsn_delete_finish(f1);
+ } else if (f2) {
+ dmnsn_delete_finish(f2);
+ }
+
+ return NULL;
+}