Initial commit.

rotating.cpp

@@ -0,0 +1,46 @@
+// -*- C++ -*-
+
+#include <math.h>
+
+#include "physics/particle.h"
+#include "rotating.h"
+
+using namespace mbostock;
+
+RotatingModel::RotatingModel(Model& m, const Rotation& r)
+    : model_(m), rotation_(r) {
+}
+
+void RotatingModel::initialize() {
+  model_.initialize();
+}
+
+void RotatingModel::display() {
+  glPushMatrix();
+  glTranslatev(rotation_.origin());
+  glRotatev(rotation_.angle(), rotation_.axis());
+  glTranslatev(-rotation_.origin());
+  model_.display();
+  glPopMatrix();
+}
+
+RotatingRoomObject::RotatingRoomObject(RoomObject* o, const Rotation& r)
+    : TransformingRoomObject(o), rotation_(r),
+      shape_(o->shape(), r), model_(o->model(), r) {
+}
+
+Model& RotatingRoomObject::model() {
+  return model_;
+}
+
+const Shape& RotatingRoomObject::shape() const {
+  return shape_;
+}
+
+Vector RotatingRoomObject::velocity(const Vector& x) const {
+  Vector v = rotation_.velocity(x);
+  if (object_->dynamic()) {
+    v += rotation_.vector(object_->velocity(rotation_.pointInverse(x)));
+  }
+  return v;
+}