Improve CSG and light handling.

- Lights can be inside CSG objects
- Lights can be modified by transformations
- CSG objects can contain only one object

1 files changed, 65 insertions, 0 deletions

diff --git a/tests/dimension/csg.pov b/tests/dimension/csg.pov
new file mode 100644
index 0000000..046510f
--- /dev/null
+++ b/tests/dimension/csg.pov
@@ -0,0 +1,65 @@
+/*************************************************************************
+ * Copyright (C) 2010 Tavian Barnes <tavianator@gmail.com>               *
+ *                                                                       *
+ * This file is part of The Dimension Test Suite.                        *
+ *                                                                       *
+ * The Dimension Test Suite is free software; you can redistribute it    *
+ * and/or modify it under the terms of the GNU 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 Test Suite 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  *
+ * General Public License for more details.                              *
+ *                                                                       *
+ * You should have received a copy of the GNU General Public License     *
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
+ *************************************************************************/
+
+// Test constructive solid geometry
+
+camera {
+  perspective
+  location -4*z
+  right    1.6*x
+  look_at  0
+}
+
+background {
+  color rgbf <0, 0.1, 0.2, 0.1>
+}
+
+/* One-object unions */
+
+union {
+  sphere {
+    -1.5*x, 1
+    pigment { color red 1 }
+  }
+}
+
+union {
+  light_source {
+    20*y, color rgb 0.5
+  }
+}
+
+/* CSG with lights */
+difference {
+  light_source {
+    -15*x, color rgb 0.5
+  }
+  sphere {
+    1.5*x - 20*y, 1
+    pigment { color green 1 }
+  }
+  light_source {
+    15*x, color rgb 0.5
+  }
+  box {
+    <0.7, -20.8, -0.8>, <2.3, -19.2, 0.8>
+    pigment { color blue 1 }
+  }
+  translate 20*y
+}