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-rw-r--r--libdimensionxx/raytrace.cpp68
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diff --git a/libdimensionxx/raytrace.cpp b/libdimensionxx/raytrace.cpp
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+/*************************************************************************
+ * 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 "dimensionxx.hpp"
+
+namespace Dimension
+{
+ Raytracer::Raytracer(Scene& scene)
+ : m_scene(&scene), m_rendered(false) { }
+
+ // Call render() if we've never rendered the scene
+ Raytracer::~Raytracer()
+ {
+ if (!m_rendered) {
+ try {
+ render();
+ } catch (...) {
+ dmnsn_error(SEVERITY_MEDIUM,
+ "Rendering scene failed in Raytracer destructor.");
+ }
+ }
+ }
+
+ // Render the scene
+ void Raytracer::render()
+ {
+ // Raytrace the scene
+ if (dmnsn_raytrace_scene(m_scene->dmnsn()) != 0) {
+ // The rendering operation failed
+ throw Dimension_Error("Raytracing scene failed.");
+ }
+
+ m_rendered = true; // Don't render the scene again in the destructor
+ }
+
+ // Render a scene in the background
+ Progress
+ Raytracer::render_async()
+ {
+ m_rendered = true; // Don't render the scene again in the destructor
+
+ // Start the asynchronous task
+ dmnsn_progress *progress = dmnsn_raytrace_scene_async(m_scene->dmnsn());
+ if (!progress) {
+ throw Dimension_Error("Starting background raytrace failed.");
+ }
+
+ // Return the Progress object
+ return Progress(progress);
+ }
+}