CGII/framework/include/cgv/base/find_action.h

44 lines
902 B
C
Raw Normal View History

2018-05-17 13:50:03 +00:00
#pragma once
#include <cgv/base/action.h>
namespace cgv {
namespace base {
2018-05-17 14:01:02 +00:00
/// simple action implementation that adds nodes implementing X to a results vector
template <class X>
class find_action : public action
{
X* x;
protected:
std::vector<X*>& result;
public:
find_action(std::vector<X*>& _result) : action(true,true), result(_result) {}
2018-05-17 13:50:03 +00:00
/// make the passed object current
void select(base_ptr p) {
x = p->get_interface<X>();
}
bool begin()
{
if (x) {
result.push_back(x);
return true;
}
else
return false;
}
/// check if the current object implements the interface needed for this action
bool implements_action() const {
return x != 0;
2018-05-17 14:01:02 +00:00
}
};
/// collect all nodes that implement interface X
template <class X>
void find_interface(base_ptr start, std::vector<X*>& result) {
find_action<X> fa(result);
traverser(fa).traverse(start);
}
}
2018-05-17 13:50:03 +00:00
}