Node.hh

 
#ifndef GRAMODS_GRAPHICS_NODE
#define GRAMODS_GRAPHICS_NODE
 
#include <gmGraphics/config.hh>
 
#include <gmGraphics/Camera.hh>
#include <gmGraphics/IntersectionLine.hh>
 
#include <gmCore/Object.hh>
 
#include <Eigen/Eigen>
#include <vector>
 
BEGIN_NAMESPACE_GMGRAPHICS;
 
class Node : public gmCore::Object {
 
public:
 
  typedef std::vector<std::shared_ptr<Node>> list;
 
  struct TransformStackVisitor : Visitor {
 
    void apply(gmCore::Object *node) override { Visitor::apply(node); }
    void apply(Object *node, const Eigen::Affine3f &transform);
 
    std::vector<Eigen::Affine3f> stack {Eigen::Affine3f::Identity()};
  };
 
  struct NearFarVisitor : TransformStackVisitor {
 
    NearFarVisitor(Camera camera) : camera(camera) {}
 
    void apply(gmCore::Object *node) override;
 
    std::optional<std::pair<float, float>> getNearFar() const;
 
    const Camera camera;
    float near = std::numeric_limits<float>::max();
    float far = std::numeric_limits<float>::min();
  };
 
  struct RenderVisitor : TransformStackVisitor {
 
    RenderVisitor(Camera camera)
      : camera(camera) {}
 
    void apply(gmCore::Object *node) override;
 
    const Camera camera;
  };
 
  virtual std::vector<float> getIntersections(const IntersectionLine &line) {
    return {};
  }
 
  virtual std::string getDefaultKey() override { return "node"; }
};
 
END_NAMESPACE_GMGRAPHICS;
 
#endif