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LSystem.h
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LSystem.h
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#ifndef LSystem_H_
#define LSystem_H_
#include <string>
#include <vector>
#include <map>
#include "vec.h"
class LSystem
{
public:
typedef std::pair<vec3, std::string> Geometry;
typedef std::pair<vec3, vec3> Branch;
public:
LSystem();
~LSystem() {}
// Set/get inputs
void loadProgram(const std::string& fileName);
void loadProgramFromString(const std::string& program);
void setDefaultAngle(float degrees);
void setDefaultStep(float distance);
float getDefaultAngle() const;
float getDefaultStep() const;
const std::string& getGrammarString() const;
// Iterate grammar
const std::string& getIteration(unsigned int n);
// Get geometry from running the turtle
void process(unsigned int n,
std::vector<Branch>& branches);
void process(unsigned int n,
std::vector<Branch>& branches,
std::vector<Geometry>& models);
protected:
void reset();
void addProduction(std::string line);
std::string iterate(const std::string& input);
std::map<std::string, std::string> productions;
std::vector<std::string> iterations;
std::vector<std::pair<vec3,vec3>> bboxes;
std::string current;
float mDfltAngle;
float mDfltStep;
std::string mGrammar;
class Turtle
{
public:
Turtle();
Turtle(const Turtle& t);
Turtle& operator=(const Turtle& t);
void moveForward(float distance);
void applyUpRot(float degrees);
void applyLeftRot(float degrees);
void applyForwardRot(float degrees);
vec3 pos;
vec3 up;
vec3 forward;
vec3 left;
};
};
#endif