abstractPolyList.cpp

Public Variables

U32

PolyFace [6][4]

Public Variables

U32 PolyFace [6][4]

  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 "collision/abstractPolyList.h"
 25
 26
 27//----------------------------------------------------------------------------
 28
 29AbstractPolyList::~AbstractPolyList()
 30{
 31   mInterestNormalRegistered = false;
 32}
 33
 34static U32 PolyFace[6][4] = {
 35   { 3, 2, 1, 0 },
 36   { 7, 4, 5, 6 },
 37   { 0, 5, 4, 3 },
 38   { 6, 5, 0, 1 },
 39   { 7, 6, 1, 2 },
 40   { 4, 7, 2, 3 },
 41};
 42
 43void AbstractPolyList::addBox(const Box3F &box, BaseMatInstance* material)
 44{
 45   Point3F pos = box.minExtents;
 46   F32 dx = box.maxExtents.x - box.minExtents.x;
 47   F32 dy = box.maxExtents.y - box.minExtents.y;
 48   F32 dz = box.maxExtents.z - box.minExtents.z;
 49
 50   U32 base = addPoint(pos);
 51   pos.y += dy; addPoint(pos);
 52   pos.x += dx; addPoint(pos);
 53   pos.y -= dy; addPoint(pos);
 54   pos.z += dz; addPoint(pos);
 55   pos.x -= dx; addPoint(pos);
 56   pos.y += dy; addPoint(pos);
 57   pos.x += dx; addPoint(pos);
 58
 59   for (S32 i = 0; i < 6; i++) {
 60      S32 v1 = base + PolyFace[i][0];
 61      S32 v2 = base + PolyFace[i][1];
 62      S32 v3 = base + PolyFace[i][2];
 63      S32 v4 = base + PolyFace[i][3];
 64      // First triangle
 65      begin(material, i);
 66      vertex(v1);
 67      vertex(v2);
 68      vertex(v3);
 69      plane(v1, v2, v3);
 70      end();
 71      // Second triangle
 72      begin(material, i);
 73      vertex(v3);
 74      vertex(v4);
 75      vertex(v1);
 76      plane(v3, v4, v1);
 77      end();
 78   }
 79}
 80
 81bool AbstractPolyList::getMapping(MatrixF *, Box3F *)
 82{
 83   // return list transform and bounds in list space...optional
 84   return false;
 85}
 86
 87
 88bool AbstractPolyList::isInterestedInPlane(const PlaneF& plane)
 89{
 90   if (mInterestNormalRegistered == false) {
 91      return true;
 92   }
 93   else {
 94      PlaneF xformed;
 95      mPlaneTransformer.transform(plane, xformed);
 96      if (mDot(xformed, mInterestNormal) >= 0.0f)
 97         return false;
 98      else
 99         return true;
100   }
101}
102
103bool AbstractPolyList::isInterestedInPlane(const U32 index)
104{
105   if (mInterestNormalRegistered == false) {
106      return true;
107   }
108   else {
109      const PlaneF& rPlane = getIndexedPlane(index);
110      if (mDot(rPlane, mInterestNormal) >= 0.0f)
111         return false;
112      else
113         return true;
114   }
115}
116
117void AbstractPolyList::setInterestNormal(const Point3F& normal)
118{
119   mInterestNormalRegistered = true;
120   mInterestNormal           = normal;
121}
122
123