cone.hpp

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#ifndef GLK_PRIMITIVES_CONE_HPP
#define GLK_PRIMITIVES_CONE_HPP
 
#include <map>
#include <vector>
#include <Eigen/Core>
 
namespace glk {
 
class Cone {
public:
  Cone(int div = 10) {
    vertices.push_back(Eigen::Vector3f::Zero());
    vertices.push_back(Eigen::Vector3f::UnitZ());
 
    double step = 2.0 * M_PI / div;
    for (int i = 0; i < div; i++) {
      double rad = step * i;
      vertices.push_back(Eigen::Vector3f(std::cos(rad), std::sin(rad), 0.0f));
 
      int current_index = i + 2;
      int next_index = ((i + 1) % div) + 2;
 
      indices.push_back(0);
      indices.push_back(current_index);
      indices.push_back(next_index);
 
      indices.push_back(current_index);
      indices.push_back(1);
      indices.push_back(next_index);
    }
  }
 
public:
  std::vector<Eigen::Vector3f> vertices;
  std::vector<int> indices;
};
 
}  // namespace glk
 
#endif