---

Turtle Class Reference

Turtle for drawing pictures. More...

#include <mturtle.h>

Inheritance diagram for Turtle:

List of all members.

Public Methods
	Turtle (TurtleDevice &dev, double step, double drot)
void	drawLSystem (const String &lstring)
void	forward ()
virtual OStream &	operator>> (OStream &out) const

---

Detailed Description

Turtle for drawing pictures.

Definition at line 120 of file mturtle.h.

---

Constructor & Destructor Documentation

Turtle (  TurtleDevice &    dev, double    step, double    drot )  [inline]

Standard constructor. Parameters: dev  Graphics device. step  Step scale size (for example 10 units). drot  Rotation delta, in degrees (for example 45 degrees). Definition at line 128 of file mturtle.h. References TurtleState::jumpTo(), and TurtleState::mRot.

---

Member Function Documentation

void drawLSystem (  const String &    lstring )

Draws the given L-System description string produced by LGrammar. Standard commands for L-Systems are accepted: F = forward one 'step' length (see the constructor), pen down. f = forward one 'step' length (see the constructor), pen up. + = turn right by the 'drot' amount given in constructor. = turn left by the 'drot' amount given in constructor. [ = push the current location into stack. ] = pop the topmost location from the stack. Definition at line 64 of file mturtle.cc. References TurtleState::copy(), TurtleDevice::end(), forward(), String::length(), TurtleState::mCoord, Array::size(), TurtleDevice::start(), TurtleDevice::tip(), and TurtleState::turnBy().

void forward (    )

Moves the turle forward one 'step' length (see the constructor). Definition at line 57 of file mturtle.cc. References TurtleDevice::forwardLine(), TurtleState::jumpTo(), TurtleState::mCoord, TurtleState::mRot, Coord2D::x, and Coord2D::y. Referenced by drawLSystem().

OStream & operator>> (  OStream &    out )  const [virtual]

Implementation for Object. Dumps the object description to the given stream. Definition at line 109 of file mturtle.cc. References TurtleState::mCoord, TurtleState::mRot, OStream::printf(), Coord2D::x, and Coord2D::y.

---

The documentation for this class was generated from the following files:

• mturtle.h
• mturtle.cc

---