Engine directory for ticket #1

Engine/source/math/mSplinePatch.cpp

@@ -0,0 +1,111 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#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 )
+{
+   result.x = result.y = result.z = 0.0f;
+}
+
+//------------------------------------------------------------------------------
+// Calc point on spline using passed-in points
+//------------------------------------------------------------------------------
+void SplinePatch::calc( Point3F * /*points*/, F32 /*t*/, Point3F &result )
+{
+   result.x = result.y = result.z = 0.0f;
+}