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path.h

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00001 /*
00002     Copyright (C) 2001 by Jorrit Tyberghein
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public
00015     License along with this library; if not, write to the Free
00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 */
00018 
00019 #ifndef __CS_PATH_H__
00020 #define __CS_PATH_H__
00021 
00022 
00029 #include "csutil/scf.h"
00030 #include "csgeom/spline.h"
00031 #include "csgeom/vector3.h"
00032 #include "igeom/path.h"
00033 
00040 class csPath : public csCatmullRomSpline, public iPath
00041 {
00042 private:
00043   void SetVectorAsDimensionValues (int dim, csVector3* v)
00044   {
00045     int i;
00046     float* x, * y, * z;
00047     x = new float [GetPointCount ()];
00048     y = new float [GetPointCount ()];
00049     z = new float [GetPointCount ()];
00050     for (i = 0 ; i < GetPointCount () ; i++)
00051     {
00052       x[i] = v[i].x;
00053       y[i] = v[i].y;
00054       z[i] = v[i].z;
00055     }
00056     SetDimensionValues (dim+0, x);
00057     SetDimensionValues (dim+1, y);
00058     SetDimensionValues (dim+2, z);
00059     delete[] x;
00060     delete[] y;
00061     delete[] z;
00062   }
00063 
00064 public:
00065   SCF_DECLARE_IBASE;
00066 
00068   csPath (int p) : csCatmullRomSpline (9, p) { }
00069 
00071   virtual ~csPath () { }
00072 
00074   int Length ()
00075   {
00076     return GetPointCount();
00077   }
00079   void CalculateAtTime (float time)
00080   {
00081     Calculate (time);
00082   }
00083   int GetCurrentIndex ()
00084   {
00085     return csCatmullRomSpline::GetCurrentIndex();
00086   }
00087   float GetTime (int idx)
00088   {
00089     return GetTimeValue(idx);
00090   }
00091   void SetTime (int idx, float t)
00092   {
00093     SetTimeValue(idx,t);
00094   }
00095 
00097   void SetPositionVectors (csVector3* v)
00098   {
00099     SetVectorAsDimensionValues (0, v);
00100   }
00102   void SetUpVectors (csVector3* v)
00103   {
00104     SetVectorAsDimensionValues (3, v);
00105   }
00107   void SetForwardVectors (csVector3* v)
00108   {
00109     SetVectorAsDimensionValues (6, v);
00110   }
00112   void SetPositionVector (int idx, const csVector3& v)
00113   {
00114     SetDimensionValue (0, idx, v.x);
00115     SetDimensionValue (1, idx, v.y);
00116     SetDimensionValue (2, idx, v.z);
00117   }
00119   void SetUpVector (int idx, const csVector3& v)
00120   {
00121     SetDimensionValue (3, idx, v.x);
00122     SetDimensionValue (4, idx, v.y);
00123     SetDimensionValue (5, idx, v.z);
00124   }
00126   void SetForwardVector (int idx, const csVector3& v)
00127   {
00128     SetDimensionValue (6, idx, v.x);
00129     SetDimensionValue (7, idx, v.y);
00130     SetDimensionValue (8, idx, v.z);
00131   }
00133   void GetPositionVector (int idx, csVector3& v)
00134   {
00135     v.x = GetDimensionValue (0, idx);
00136     v.y = GetDimensionValue (1, idx);
00137     v.z = GetDimensionValue (2, idx);
00138   }
00140   void GetUpVector (int idx, csVector3& v)
00141   {
00142     v.x = GetDimensionValue (3, idx);
00143     v.y = GetDimensionValue (4, idx);
00144     v.z = GetDimensionValue (5, idx);
00145   }
00147   void GetForwardVector (int idx, csVector3& v)
00148   {
00149     v.x = GetDimensionValue (6, idx);
00150     v.y = GetDimensionValue (7, idx);
00151     v.z = GetDimensionValue (8, idx);
00152   }
00153 
00155   void GetInterpolatedPosition (csVector3& pos)
00156   {
00157     pos.x = GetInterpolatedDimension (0);
00158     pos.y = GetInterpolatedDimension (1);
00159     pos.z = GetInterpolatedDimension (2);
00160   }
00162   void GetInterpolatedUp (csVector3& pos)
00163   {
00164     pos.x = GetInterpolatedDimension (3);
00165     pos.y = GetInterpolatedDimension (4);
00166     pos.z = GetInterpolatedDimension (5);
00167   }
00169   void GetInterpolatedForward (csVector3& pos)
00170   {
00171     pos.x = GetInterpolatedDimension (6);
00172     pos.y = GetInterpolatedDimension (7);
00173     pos.z = GetInterpolatedDimension (8);
00174   }
00175 };
00176 
00179 #endif // __CS_PATH_H__

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