mSplinePatch.cpp

Detailed Description

  1
  2//-----------------------------------------------------------------------------
  3// Copyright (c) 2012 GarageGames, LLC
  4//
  5// Permission is hereby granted, free of charge, to any person obtaining a copy
  6// of this software and associated documentation files (the "Software"), to
  7// deal in the Software without restriction, including without limitation the
  8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  9// sell copies of the Software, and to permit persons to whom the Software is
 10// furnished to do so, subject to the following conditions:
 11//
 12// The above copyright notice and this permission notice shall be included in
 13// all copies or substantial portions of the Software.
 14//
 15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 21// IN THE SOFTWARE.
 22//-----------------------------------------------------------------------------
 23
 24#include "math/mSplinePatch.h"
 25
 26
 27//******************************************************************************
 28// Spline control points
 29//******************************************************************************
 30SplCtrlPts::SplCtrlPts()
 31{
 32}
 33
 34//------------------------------------------------------------------------------
 35// Destructor
 36//------------------------------------------------------------------------------
 37SplCtrlPts::~SplCtrlPts()
 38{
 39}
 40
 41//------------------------------------------------------------------------------
 42// Get point
 43//------------------------------------------------------------------------------
 44const Point3F * SplCtrlPts::getPoint( U32 pointNum )
 45{
 46   return &mPoints[pointNum];
 47}
 48
 49//------------------------------------------------------------------------------
 50// Set point
 51//------------------------------------------------------------------------------
 52void SplCtrlPts::setPoint( Point3F &point, U32 pointNum )
 53{
 54   mPoints[pointNum] = point;
 55}
 56
 57//------------------------------------------------------------------------------
 58// Add point
 59//------------------------------------------------------------------------------
 60void SplCtrlPts::addPoint( Point3F &point )
 61{
 62   mPoints.push_back( point );
 63}
 64
 65//------------------------------------------------------------------------------
 66// Submit control points
 67//------------------------------------------------------------------------------
 68void SplCtrlPts::submitPoints( Point3F *pts, U32 num )
 69{
 70   mPoints.clear();
 71
 72   for( S32 i=0; i<num; i++ )
 73   {
 74      mPoints.push_back( pts[i] );
 75   }
 76}
 77
 78
 79//******************************************************************************
 80// Spline patch  - base class
 81//******************************************************************************
 82SplinePatch::SplinePatch()
 83{
 84   mNumReqControlPoints = 0;
 85}
 86
 87//------------------------------------------------------------------------------
 88// This method is the only way to modify control points once they have been
 89// submitted to the patch.  This was done to make sure the patch has a chance
 90// to re-calc any pre-calculated data it may be using from the submitted control
 91// points.
 92//------------------------------------------------------------------------------
 93void SplinePatch::setControlPoint( Point3F &point, S32 index )
 94{
 95   mControlPoints.setPoint( point, index );
 96}
 97
 98//------------------------------------------------------------------------------
 99// Calc point on spline using already submitted points
100//------------------------------------------------------------------------------
101void SplinePatch::calc( F32 /*t*/, Point3F &result )
102{
103   result.x = result.y = result.z = 0.0f;
104}
105
106//------------------------------------------------------------------------------
107// Calc point on spline using passed-in points
108//------------------------------------------------------------------------------
109void SplinePatch::calc( Point3F * /*points*/, F32 /*t*/, Point3F &result )
110{
111   result.x = result.y = result.z = 0.0f;
112}
113