trackball.cpp File Reference

#include "trackball.h"
#include "EPS.h"
#include "dot.h"
#include "cross.h"
#include "axis_angle_to_quat.h"
#include "quat_mult.h"
#include <cmath>
#include <cstdlib>
#include <cassert>
#include <algorithm>
#include <iostream>

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Functions
template<typename Q_type >
static IGL_INLINE Q_type	_QuatD (double w, double h)
template<typename Q_type >
static IGL_INLINE Q_type	_QuatIX (double x, double w, double h)
template<typename Q_type >
static IGL_INLINE Q_type	_QuatIY (double y, double w, double h)

Function Documentation

_QuatD()

template<typename Q_type >

static IGL_INLINE Q_type _QuatD ( double  w, double  h  )

static

{
  using namespace std;
  return (Q_type)(std::abs(w) < std::abs(h) ? std::abs(w) : std::abs(h)) - 4;
}

_QuatIX()

template<typename Q_type >

static IGL_INLINE Q_type _QuatIX ( double  x, double  w, double  h  )

static

{
  return (2.0f*(Q_type)x - (Q_type)w - 1.0f)/_QuatD<Q_type>(w, h);
}

_QuatIY()

template<typename Q_type >

static IGL_INLINE Q_type _QuatIY ( double  y, double  w, double  h  )

static

{
  return (-2.0f*(Q_type)y + (Q_type)h - 1.0f)/_QuatD<Q_type>(w, h);
}