Detailed Description

Reference Frame.

Every geometric entity inherits its own local reference frame which provides methods to translate and rotate the body with respect to a global reference. All transformation operations modify the reference frame. When multiple rotations are specified, they will be performed in axes order, i.e. (1.) Rotation about x-Axis, (2) about y-Axis, (3) about z-Axis.

An object which inherits from RFrame must provide a method

  void apply();

which implements the homogeneous transform for the objects using the protected 4x4 transformation matrix 'mat'. A example transformation sequence would look like:

  Surface surf;
  [...]
  surf.scale(3.0);
  surf.rotate(0.2, 0, 0);
  surf.translate(3.0, 4.0, -2.5);
  surf.apply();

#include <trafo.h>

Inheritance diagram for RFrame:

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Collaboration diagram for RFrame:

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Public Member Functions
	RFrame ()
	default construction

virtual	~RFrame ()
	virtual destructor

virtual void	apply ()=0
	this method must be provided by childs

void	clear ()
	apply should finally call this method to clear transformation matrix

Vct3	getOrigin () const
	return the position of the current frame relative to global origin

void	translate (const Vct3 &v)
	move reference frame by translation vector

void	translate (Real dx, Real dy, Real dz)
	move reference by (dx,dy,dz)

void	rotate (Real betax, Real betay, Real betaz)
	rotate by (betax, bety, betaz) around origin axis

void	rotate (const Vct3 &rotax, Real angle)
	rotate by angle around axis

void	scale (Real xf, Real yf, Real zf)
	scales in three dimensions by the factors given

void	scale (Real f)
	scale in all directions

void	mirror (const Vct3 &normal)
	mirror about plane - parameter is mirror plane normal

const SMatrix< 4, 4 > &	trafoMatrix () const
	return transformation matrix

void	setTrafoMatrix (const SMatrix< 4, 4 > &m)
	set transformation matrix

Vct3	forward (const Vct3 &a) const
	coordinate-transform vector

void	forward (const PointList< 4 > &a, PointList< 4 > &b) const
	coordinate-transform vector backwards

Protected Attributes
SMatrix< 4, 4 >	mat
	transformation matrix

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

trafo.h
trafo.cpp

Detailed Description

Public Member Functions

Protected Attributes