CrystalSpace

Public API Reference

csgeom/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 
00030 #include "csextern.h"
00031 
00032 #include "csgeom/spline.h"
00033 #include "csgeom/vector3.h"
00034 #include "csutil/scf_implementation.h"
00035 
00036 #include "igeom/path.h"
00037 
00044 class CS_CRYSTALSPACE_EXPORT csPath :
00045   public scfImplementation1<csPath, iPath>
00046 {
00047 protected:
00048   csCatmullRomSpline spline;
00049 
00050 private:
00051   void SetVectorAsDimensionValues (int dim, csVector3* v)
00052   {
00053     int i;
00054     int N = spline.GetPointCount();
00055     float* x, * y, * z;
00056     x = new float [N];
00057     y = new float [N];
00058     z = new float [N];
00059     for (i = 0 ; i < N ; i++)
00060     {
00061       x[i] = v[i].x;
00062       y[i] = v[i].y;
00063       z[i] = v[i].z;
00064     }
00065     spline.SetDimensionValues (dim+0, x);
00066     spline.SetDimensionValues (dim+1, y);
00067     spline.SetDimensionValues (dim+2, z);
00068     delete[] x;
00069     delete[] y;
00070     delete[] z;
00071   }
00072 
00073 public:
00074 
00076   csPath (int p) : scfImplementationType(this), spline (9, p)
00077   { }
00078 
00080   virtual ~csPath ()
00081   { }
00082 
00084   virtual int Length ()
00085   {
00086     return spline.GetPointCount();
00087   }
00088 
00090   virtual void CalculateAtTime (float time)
00091   {
00092     spline.Calculate (time);
00093   }
00094  
00096   virtual int GetCurrentIndex ()
00097   {
00098     return spline.GetCurrentIndex();
00099   }
00101   virtual float GetTime (int idx)
00102   {
00103     return spline.GetTimeValue(idx);
00104   }
00105   
00107   virtual void SetTime (int idx, float t)
00108   {
00109     spline.SetTimeValue(idx,t);
00110   }
00111   
00118   void SetTimes (float const* t)
00119   {
00120     spline.SetTimeValues(t);
00121   }
00122  
00124   float const* GetTimes () const
00125   {
00126     return spline.GetTimeValues();
00127   }
00128   
00130   virtual void SetPositionVectors (csVector3* v)
00131   {
00132     SetVectorAsDimensionValues (0, v);
00133   }
00135   virtual void SetUpVectors (csVector3* v)
00136   {
00137     SetVectorAsDimensionValues (3, v);
00138   }
00140   virtual void SetForwardVectors (csVector3* v)
00141   {
00142     SetVectorAsDimensionValues (6, v);
00143   }
00145   virtual void SetPositionVector (int idx, const csVector3& v)
00146   {
00147     spline.SetDimensionValue (0, idx, v.x);
00148     spline.SetDimensionValue (1, idx, v.y);
00149     spline.SetDimensionValue (2, idx, v.z);
00150   }
00152   virtual void SetUpVector (int idx, const csVector3& v)
00153   {
00154     spline.SetDimensionValue (3, idx, v.x);
00155     spline.SetDimensionValue (4, idx, v.y);
00156     spline.SetDimensionValue (5, idx, v.z);
00157   }
00159   virtual void SetForwardVector (int idx, const csVector3& v)
00160   {
00161     spline.SetDimensionValue (6, idx, v.x);
00162     spline.SetDimensionValue (7, idx, v.y);
00163     spline.SetDimensionValue (8, idx, v.z);
00164   }
00166   virtual void GetPositionVector (int idx, csVector3& v)
00167   {
00168     v.x = spline.GetDimensionValue (0, idx);
00169     v.y = spline.GetDimensionValue (1, idx);
00170     v.z = spline.GetDimensionValue (2, idx);
00171   }
00173   virtual void GetUpVector (int idx, csVector3& v)
00174   {
00175     v.x = spline.GetDimensionValue (3, idx);
00176     v.y = spline.GetDimensionValue (4, idx);
00177     v.z = spline.GetDimensionValue (5, idx);
00178   }
00180   virtual void GetForwardVector (int idx, csVector3& v)
00181   {
00182     v.x = spline.GetDimensionValue (6, idx);
00183     v.y = spline.GetDimensionValue (7, idx);
00184     v.z = spline.GetDimensionValue (8, idx);
00185   }
00186 
00188   virtual void GetInterpolatedPosition (csVector3& pos)
00189   {
00190     pos.x = spline.GetInterpolatedDimension (0);
00191     pos.y = spline.GetInterpolatedDimension (1);
00192     pos.z = spline.GetInterpolatedDimension (2);
00193   }
00195   virtual void GetInterpolatedUp (csVector3& pos)
00196   {
00197     pos.x = spline.GetInterpolatedDimension (3);
00198     pos.y = spline.GetInterpolatedDimension (4);
00199     pos.z = spline.GetInterpolatedDimension (5);
00200   }
00202   virtual void GetInterpolatedForward (csVector3& pos)
00203   {
00204     pos.x = spline.GetInterpolatedDimension (6);
00205     pos.y = spline.GetInterpolatedDimension (7);
00206     pos.z = spline.GetInterpolatedDimension (8);
00207   }
00209   float const* GetDimensionValues (int dim) const
00210   {
00211     return spline.GetDimensionValues(dim);
00212   }
00214   float GetDimensionValue (int dim, int idx) const
00215   {
00216     return spline.GetDimensionValue(dim, idx);
00217   }
00222   void InsertPoint (int idx)
00223   {
00224     spline.InsertPoint(idx);
00225   }
00227   void RemovePoint (int idx)
00228   {
00229     spline.RemovePoint(idx);
00230   }
00231 };
00232 
00235 #endif // __CS_PATH_H__

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