Move source to src.

src/switch.h

@@ -0,0 +1,34 @@
+// -*- C++ -*-
+
+#ifndef MBOSTOCK_SWITCH_H
+#define MBOSTOCK_SWITCH_H
+
+#include <vector>
+
+#include "block.h"
+
+namespace mbostock {
+
+  class Transform;
+
+  class Switch : public AxisAlignedBlock {
+  public:
+    Switch(const Vector& min, const Vector& max);
+
+    virtual bool dynamic() const;
+    virtual void applyWeight(float w, const Vector& x);
+    virtual void reset();
+
+    void addTarget(Transform& t);
+    void setActiveMaterial(const Material& m);
+
+  private:
+    std::vector<Transform*> targets_;
+    const Material* inactiveMaterial_;
+    const Material* inactiveTopMaterial_;
+    const Material* activeMaterial_;
+  };
+
+}
+
+#endif