t2 engine svn checkout

math/mSplinePatch.cc

@@ -0,0 +1,99 @@
+//-----------------------------------------------------------------------------
+// V12 Engine
+// 
+// Copyright (c) 2001 GarageGames.Com
+// Portions Copyright (c) 2001 by Sierra Online, Inc.
+//-----------------------------------------------------------------------------
+
+#include "Math/mSplinePatch.h"
+
+
+//******************************************************************************
+// Spline control points
+//******************************************************************************
+SplCtrlPts::SplCtrlPts()
+{
+}
+
+//------------------------------------------------------------------------------
+// Destructor
+//------------------------------------------------------------------------------
+SplCtrlPts::~SplCtrlPts()
+{
+}
+
+//------------------------------------------------------------------------------
+// Get point
+//------------------------------------------------------------------------------
+const Point3F * SplCtrlPts::getPoint( U32 pointNum )
+{ 
+   return &mPoints[pointNum];
+}
+
+//------------------------------------------------------------------------------
+// Set point
+//------------------------------------------------------------------------------
+void SplCtrlPts::setPoint( Point3F &point, U32 pointNum )
+{
+   mPoints[pointNum] = point;
+}
+
+//------------------------------------------------------------------------------
+// Add point
+//------------------------------------------------------------------------------
+void SplCtrlPts::addPoint( Point3F &point )
+{
+   mPoints.push_back( point );
+}
+
+//------------------------------------------------------------------------------
+// Submit control points
+//------------------------------------------------------------------------------
+void SplCtrlPts::submitPoints( Point3F *pts, U32 num )
+{
+   mPoints.clear();
+
+   for( int i=0; i<num; i++ )
+   {
+      mPoints.push_back( pts[i] );
+   }
+}
+
+
+//******************************************************************************
+// Spline patch  - base class
+//******************************************************************************
+SplinePatch::SplinePatch()
+{
+   mNumReqControlPoints = 0;
+}
+
+//------------------------------------------------------------------------------
+// This method is the only way to modify control points once they have been
+// submitted to the patch.  This was done to make sure the patch has a chance
+// to re-calc any pre-calculated data it may be using from the submitted control
+// points.
+//------------------------------------------------------------------------------
+void SplinePatch::setControlPoint( Point3F &point, int index )
+{
+   mControlPoints.setPoint( point, index );
+}
+
+//------------------------------------------------------------------------------
+// Calc point on spline using already submitted points
+//------------------------------------------------------------------------------
+void SplinePatch::calc( F32 t, Point3F &result )
+{
+   t = t; // kill compiler warning;
+   result.x = result.y = result.z = 0.0;
+}
+
+//------------------------------------------------------------------------------
+// Calc point on spline using passed-in points
+//------------------------------------------------------------------------------
+void SplinePatch::calc( Point3F *points, F32 t, Point3F &result )
+{
+   points = points;  // kill compiler warning
+   t = t;            // kill compiler warning;
+   result.x = result.y = result.z = 0.0;
+}