Engine directory for ticket #1

Engine/source/collision/abstractPolyList.cpp

@@ -0,0 +1,114 @@
+//-----------------------------------------------------------------------------
+// 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 "collision/abstractPolyList.h"
+
+
+//----------------------------------------------------------------------------
+
+AbstractPolyList::~AbstractPolyList()
+{
+   mInterestNormalRegistered = false;
+}
+
+static U32 PolyFace[6][4] = {
+   { 3, 2, 1, 0 },
+   { 7, 4, 5, 6 },
+   { 0, 5, 4, 3 },
+   { 6, 5, 0, 1 },
+   { 7, 6, 1, 2 },
+   { 4, 7, 2, 3 },
+};
+
+void AbstractPolyList::addBox(const Box3F &box, BaseMatInstance* material)
+{
+   Point3F pos = box.minExtents;
+   F32 dx = box.maxExtents.x - box.minExtents.x;
+   F32 dy = box.maxExtents.y - box.minExtents.y;
+   F32 dz = box.maxExtents.z - box.minExtents.z;
+
+   U32 base = addPoint(pos);
+   pos.y += dy; addPoint(pos);
+   pos.x += dx; addPoint(pos);
+   pos.y -= dy; addPoint(pos);
+   pos.z += dz; addPoint(pos);
+   pos.x -= dx; addPoint(pos);
+   pos.y += dy; addPoint(pos);
+   pos.x += dx; addPoint(pos);
+
+   for (S32 i = 0; i < 6; i++) {
+      begin(material, i);
+      S32 v1 = base + PolyFace[i][0];
+      S32 v2 = base + PolyFace[i][1];
+      S32 v3 = base + PolyFace[i][2];
+      S32 v4 = base + PolyFace[i][3];
+      vertex(v1);
+      vertex(v2);
+      vertex(v3);
+      vertex(v4);
+      plane(v1, v2, v3);
+      end();
+   }
+}
+
+bool AbstractPolyList::getMapping(MatrixF *, Box3F *)
+{
+   // return list transform and bounds in list space...optional
+   return false;
+}
+
+
+bool AbstractPolyList::isInterestedInPlane(const PlaneF& plane)
+{
+   if (mInterestNormalRegistered == false) {
+      return true;
+   }
+   else {
+      PlaneF xformed;
+      mPlaneTransformer.transform(plane, xformed);
+      if (mDot(xformed, mInterestNormal) >= 0.0f)
+         return false;
+      else
+         return true;
+   }
+}
+
+bool AbstractPolyList::isInterestedInPlane(const U32 index)
+{
+   if (mInterestNormalRegistered == false) {
+      return true;
+   }
+   else {
+      const PlaneF& rPlane = getIndexedPlane(index);
+      if (mDot(rPlane, mInterestNormal) >= 0.0f)
+         return false;
+      else
+         return true;
+   }
+}
+
+void AbstractPolyList::setInterestNormal(const Point3F& normal)
+{
+   mInterestNormalRegistered = true;
+   mInterestNormal           = normal;
+}
+