csgeom/path.h Source File (Crystal Space 2.0 Public API Reference)

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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 #include "csutil/csobject.h"
    00036
    00037 #include "igeom/path.h"
    00038
    00045 class csPath : public scfImplementationExt1<csPath, csObject, 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
    00079   void Setup (int p) { spline.Setup (9, p); }
    00080
    00082   virtual ~csPath ()
    00083   { }
    00084
    00086   virtual int Length ()
    00087   {
    00088     return spline.GetPointCount();
    00089   }
    00090
    00091   // Get the iObject for this path.
    00092   virtual iObject* QueryObject ()
    00093   {
    00094     return this;
    00095   }
    00096
    00098   virtual void CalculateAtTime (float time)
    00099   {
    00100     spline.Calculate (time);
    00101   }
    00102
    00104   virtual int GetCurrentIndex ()
    00105   {
    00106     return spline.GetCurrentIndex();
    00107   }
    00109   virtual float GetTime (int idx)
    00110   {
    00111     return spline.GetTimeValue(idx);
    00112   }
    00113
    00115   virtual void SetTime (int idx, float t)
    00116   {
    00117     spline.SetTimeValue(idx,t);
    00118   }
    00119
    00126   void SetTimes (float const* t)
    00127   {
    00128     spline.SetTimeValues(t);
    00129   }
    00130
    00132   float const* GetTimes () const
    00133   {
    00134     return spline.GetTimeValues();
    00135   }
    00136
    00138   virtual void SetPositionVectors (csVector3* v)
    00139   {
    00140     SetVectorAsDimensionValues (0, v);
    00141   }
    00143   virtual void SetUpVectors (csVector3* v)
    00144   {
    00145     SetVectorAsDimensionValues (3, v);
    00146   }
    00148   virtual void SetForwardVectors (csVector3* v)
    00149   {
    00150     SetVectorAsDimensionValues (6, v);
    00151   }
    00153   virtual void SetPositionVector (int idx, const csVector3& v)
    00154   {
    00155     spline.SetDimensionValue (0, idx, v.x);
    00156     spline.SetDimensionValue (1, idx, v.y);
    00157     spline.SetDimensionValue (2, idx, v.z);
    00158   }
    00160   virtual void SetUpVector (int idx, const csVector3& v)
    00161   {
    00162     spline.SetDimensionValue (3, idx, v.x);
    00163     spline.SetDimensionValue (4, idx, v.y);
    00164     spline.SetDimensionValue (5, idx, v.z);
    00165   }
    00167   virtual void SetForwardVector (int idx, const csVector3& v)
    00168   {
    00169     spline.SetDimensionValue (6, idx, v.x);
    00170     spline.SetDimensionValue (7, idx, v.y);
    00171     spline.SetDimensionValue (8, idx, v.z);
    00172   }
    00174   virtual void GetPositionVector (int idx, csVector3& v)
    00175   {
    00176     v.x = spline.GetDimensionValue (0, idx);
    00177     v.y = spline.GetDimensionValue (1, idx);
    00178     v.z = spline.GetDimensionValue (2, idx);
    00179   }
    00181   virtual void GetUpVector (int idx, csVector3& v)
    00182   {
    00183     v.x = spline.GetDimensionValue (3, idx);
    00184     v.y = spline.GetDimensionValue (4, idx);
    00185     v.z = spline.GetDimensionValue (5, idx);
    00186   }
    00188   virtual void GetForwardVector (int idx, csVector3& v)
    00189   {
    00190     v.x = spline.GetDimensionValue (6, idx);
    00191     v.y = spline.GetDimensionValue (7, idx);
    00192     v.z = spline.GetDimensionValue (8, idx);
    00193   }
    00194
    00196   virtual void GetInterpolatedPosition (csVector3& pos)
    00197   {
    00198     pos.x = spline.GetInterpolatedDimension (0);
    00199     pos.y = spline.GetInterpolatedDimension (1);
    00200     pos.z = spline.GetInterpolatedDimension (2);
    00201   }
    00203   virtual void GetInterpolatedUp (csVector3& pos)
    00204   {
    00205     pos.x = spline.GetInterpolatedDimension (3);
    00206     pos.y = spline.GetInterpolatedDimension (4);
    00207     pos.z = spline.GetInterpolatedDimension (5);
    00208   }
    00210   virtual void GetInterpolatedForward (csVector3& pos)
    00211   {
    00212     pos.x = spline.GetInterpolatedDimension (6);
    00213     pos.y = spline.GetInterpolatedDimension (7);
    00214     pos.z = spline.GetInterpolatedDimension (8);
    00215   }
    00217   float const* GetDimensionValues (int dim) const
    00218   {
    00219     return spline.GetDimensionValues(dim);
    00220   }
    00222   float GetDimensionValue (int dim, int idx) const
    00223   {
    00224     return spline.GetDimensionValue(dim, idx);
    00225   }
    00230   void InsertPoint (int idx)
    00231   {
    00232     spline.InsertPoint(idx);
    00233   }
    00235   void RemovePoint (int idx)
    00236   {
    00237     spline.RemovePoint(idx);
    00238   }
    00239 };
    00240
    00243 #endif // __CS_PATH_H__