added RogueViz sample

rogueviz/sample.cpp

@@ -0,0 +1,30 @@
+#include "../hyper.h"
+
+// a very simple example: render a triangle in S3 using HyperRogue engine
+
+// compile with: mymake rogueviz/sample.cpp
+
+// run HyperRogue with: ./hyper -geo 120c -canvas 0 -noplayer
+// press End to move forward (initially the camera is in the center of the triangle so you don't see it)
+
+// (120c sets spherical geometry (120-cell) and -canvas 0 makes the world empty)
+
+namespace hr {
+
+bool draw_simple_scene() {
+
+  shiftmatrix Where = ggmatrix(currentmap->gamestart());
+
+  curvepoint(xpush0(0.2));
+  curvepoint(spin(120*degree) * xpush0(0.2));
+  curvepoint(spin(240*degree) * xpush0(0.2));
+  curvepoint(xpush0(0.2));
+  
+  queuecurve(Where, 0xFF0000FF, 0x00FF00FF, PPR::LINE);
+  
+  return false;
+  }
+
+auto plyhook = addHook(hooks_frame, 100, draw_simple_scene);
+
+}