Public API Reference

csgeom/path.h

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/*
    Copyright (C) 2001 by Jorrit Tyberghein

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __CS_PATH_H__
#define __CS_PATH_H__


#include "csextern.h"

#include "csgeom/spline.h"
#include "csgeom/vector3.h"
#include "csutil/scf_implementation.h"
#include "csutil/csobject.h"

#include "igeom/path.h"

class csPath : public scfImplementationExt1<csPath, csObject, iPath>
{
protected:
  csCatmullRomSpline spline;

private:
  void SetVectorAsDimensionValues (int dim, csVector3* v)
  {
    int i;
    int N = spline.GetPointCount();
    float* x, * y, * z;
    x = new float [N];
    y = new float [N];
    z = new float [N];
    for (i = 0 ; i < N ; i++)
    {
      x[i] = v[i].x;
      y[i] = v[i].y;
      z[i] = v[i].z;
    }
    spline.SetDimensionValues (dim+0, x);
    spline.SetDimensionValues (dim+1, y);
    spline.SetDimensionValues (dim+2, z);
    delete[] x;
    delete[] y;
    delete[] z;
  }

public:

  csPath (int p) : scfImplementationType(this), spline (9, p) {};

  void Setup (int p) { spline.Setup (9, p); }

  virtual ~csPath ()
  { }

  virtual int Length ()
  {
    return spline.GetPointCount();
  }

  // Get the iObject for this path.
  virtual iObject* QueryObject ()
  { 
    return this; 
  }

  virtual void CalculateAtTime (float time)
  {
    spline.Calculate (time);
  }
 
  virtual int GetCurrentIndex ()
  {
    return spline.GetCurrentIndex();
  }
  virtual float GetTime (int idx)
  {
    return spline.GetTimeValue(idx);
  }
  
  virtual void SetTime (int idx, float t)
  {
    spline.SetTimeValue(idx,t);
  }
  
  void SetTimes (float const* t)
  {
    spline.SetTimeValues(t);
  }
 
  float const* GetTimes () const
  {
    return spline.GetTimeValues();
  }
  
  virtual void SetPositionVectors (csVector3* v)
  {
    SetVectorAsDimensionValues (0, v);
  }
  virtual void SetUpVectors (csVector3* v)
  {
    SetVectorAsDimensionValues (3, v);
  }
  virtual void SetForwardVectors (csVector3* v)
  {
    SetVectorAsDimensionValues (6, v);
  }
  virtual void SetPositionVector (int idx, const csVector3& v)
  {
    spline.SetDimensionValue (0, idx, v.x);
    spline.SetDimensionValue (1, idx, v.y);
    spline.SetDimensionValue (2, idx, v.z);
  }
  virtual void SetUpVector (int idx, const csVector3& v)
  {
    spline.SetDimensionValue (3, idx, v.x);
    spline.SetDimensionValue (4, idx, v.y);
    spline.SetDimensionValue (5, idx, v.z);
  }
  virtual void SetForwardVector (int idx, const csVector3& v)
  {
    spline.SetDimensionValue (6, idx, v.x);
    spline.SetDimensionValue (7, idx, v.y);
    spline.SetDimensionValue (8, idx, v.z);
  }
  virtual void GetPositionVector (int idx, csVector3& v)
  {
    v.x = spline.GetDimensionValue (0, idx);
    v.y = spline.GetDimensionValue (1, idx);
    v.z = spline.GetDimensionValue (2, idx);
  }
  virtual void GetUpVector (int idx, csVector3& v)
  {
    v.x = spline.GetDimensionValue (3, idx);
    v.y = spline.GetDimensionValue (4, idx);
    v.z = spline.GetDimensionValue (5, idx);
  }
  virtual void GetForwardVector (int idx, csVector3& v)
  {
    v.x = spline.GetDimensionValue (6, idx);
    v.y = spline.GetDimensionValue (7, idx);
    v.z = spline.GetDimensionValue (8, idx);
  }

  virtual void GetInterpolatedPosition (csVector3& pos)
  {
    pos.x = spline.GetInterpolatedDimension (0);
    pos.y = spline.GetInterpolatedDimension (1);
    pos.z = spline.GetInterpolatedDimension (2);
  }
  virtual void GetInterpolatedUp (csVector3& pos)
  {
    pos.x = spline.GetInterpolatedDimension (3);
    pos.y = spline.GetInterpolatedDimension (4);
    pos.z = spline.GetInterpolatedDimension (5);
  }
  virtual void GetInterpolatedForward (csVector3& pos)
  {
    pos.x = spline.GetInterpolatedDimension (6);
    pos.y = spline.GetInterpolatedDimension (7);
    pos.z = spline.GetInterpolatedDimension (8);
  }
  float const* GetDimensionValues (int dim) const
  {
    return spline.GetDimensionValues(dim);
  }
  float GetDimensionValue (int dim, int idx) const
  {
    return spline.GetDimensionValue(dim, idx);
  }
  void InsertPoint (int idx)
  {
    spline.InsertPoint(idx);
  }
  void RemovePoint (int idx)
  {
    spline.RemovePoint(idx);
  }
};

#endif // __CS_PATH_H__

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