summaryrefslogtreecommitdiffstats
path: root/libdimension/scene.c
diff options
context:
space:
mode:
Diffstat (limited to 'libdimension/scene.c')
-rw-r--r--libdimension/scene.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/libdimension/scene.c b/libdimension/scene.c
new file mode 100644
index 0000000..541e3ba
--- /dev/null
+++ b/libdimension/scene.c
@@ -0,0 +1,74 @@
+/*************************************************************************
+ * Copyright (C) 2008 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 */
+
+dmnsn_scene *
+dmnsn_new_scene(unsigned int x, unsigned int y)
+{
+ dmnsn_scene *scene = malloc(sizeof(dmnsn_scene));
+ if (scene) {
+ scene->objects = dmnsn_new_array(sizeof(dmnsn_object*));
+
+ scene->canvas = dmnsn_new_canvas(x, y);
+ if (!scene->canvas) {
+ dmnsn_delete_array(scene->objects);
+ return NULL;
+ }
+ }
+
+ return scene;
+}
+
+void
+dmnsn_delete_scene(dmnsn_scene *scene)
+{
+ if (scene) {
+ dmnsn_delete_array(scene->objects);
+ free(scene);
+ }
+}
+
+void
+dmnsn_raytrace_scene(dmnsn_scene *scene)
+{
+ unsigned int i, j;
+ dmnsn_object *object;
+ dmnsn_line l;
+
+ l.x0 = dmnsn_vector_construct(0.0, 0.0, -3.0);
+ dmnsn_array_get(scene->objects, 0, &object);
+
+ for (i = 0; i < scene->canvas->x; ++i) {
+ for (j = 0; j < scene->canvas->y; ++j) {
+ l.n.x = 1.6*(((double)i)/(scene->canvas->x - 1) - 0.5);
+ l.n.y = ((double)j)/(scene->canvas->y - 1) - 0.5;
+ l.n.z = 1.0;
+
+ if ((*object->intersections_fn)(l)->length > 0) {
+ dmnsn_set_pixel(scene->canvas, i, j,
+ dmnsn_color_from_XYZ(dmnsn_whitepoint));
+ } else {
+ dmnsn_set_pixel(scene->canvas, i, j, scene->background);
+ }
+ }
+ }
+}