Recovered from microbel

common/include/spline.H

@@ -0,0 +1,83 @@
+/*
+ * PVVMUD a 3D MUD
+ * Copyright (C) 1998-1999  Programvareverkstedet (pvv@pvv.org)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#ifndef _SPLINE_H
+#define _SPLINE_H
+
+#include "keyframe.H"
+
+class CSpline: public CInterpolate {
+  CMatrix * m_basis;
+public:
+  CSpline(CMatrix * basis);
+
+  virtual CVector interpolate(double time, ControlVector_t * controlVector);
+ 
+  virtual CVector interpolate(double time, CMatrix & control);
+
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// Catmull-Rom
+//   For N segments we need 4+(N-1) control vectors [0..K]
+//   Line pass through all control vector except first and last.
+//   s control the tension of the curve.
+////////////////////////////////////////////////////////////////////////////////
+class CCatmullRom : public CSpline{
+public:
+  CCatmullRom(double s = 1.0);
+
+  virtual void addControlVector(CKeyFrame * keyFrame,
+                                const ControlVector_t & controlVector);
+
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// Bezier
+//   For N segments we need 4+3*(N-1) control vectors [0..K]
+//   Line pass through every 4. control vector including first and last.
+//   Every 2. and 3. points are used to control the curve form.
+////////////////////////////////////////////////////////////////////////////////
+class CBezier : public CSpline {
+   static CMatrix m_bezier;
+public:
+  CBezier();
+
+  virtual void addControlVector(CKeyFrame * keyFrame,
+                                const ControlVector_t & controlVector);
+
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// Hermite
+//   For N segments we need 4+2*(N-1) control vectors [0..K]
+//   Line pass through every odd control vector. Every even contorl vector
+//   is a tangent for the curve. 
+////////////////////////////////////////////////////////////////////////////////
+class CHermite : public CSpline {
+  static CMatrix m_hermite;
+public:
+  CHermite();
+
+  virtual void addControlVector(CKeyFrame * keyFrame,
+                                const ControlVector_t & controlVector);
+
+};
+
+#endif // _SPLINE_H