Engine directory for ticket #1

Engine/source/collision/planeExtractor.cpp

@@ -0,0 +1,129 @@
+//-----------------------------------------------------------------------------
+// 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 "platform/platform.h"
+#include "math/mMath.h"
+#include "console/console.h"
+#include "collision/planeExtractor.h"
+
+//----------------------------------------------------------------------------
+// Plane matching parameters
+static F32 NormalEpsilon = 0.93969f; // 20 deg.
+static F32 DistanceEpsilon = 100.0f;
+
+
+//----------------------------------------------------------------------------
+
+PlaneExtractorPolyList::PlaneExtractorPolyList()
+{
+   VECTOR_SET_ASSOCIATION(mVertexList);
+   VECTOR_SET_ASSOCIATION(mPolyPlaneList);
+}
+
+PlaneExtractorPolyList::~PlaneExtractorPolyList()
+{
+}
+
+
+//----------------------------------------------------------------------------
+
+void PlaneExtractorPolyList::clear()
+{
+   mVertexList.clear();
+   mPolyPlaneList.clear();
+}
+
+U32 PlaneExtractorPolyList::addPoint(const Point3F& p)
+{
+   mVertexList.increment();
+   Point3F& v = mVertexList.last();
+   v.x = p.x * mScale.x;
+   v.y = p.y * mScale.y;
+   v.z = p.z * mScale.z;
+   mMatrix.mulP(v);
+   return mVertexList.size() - 1;
+}
+
+U32 PlaneExtractorPolyList::addPlane(const PlaneF& plane)
+{
+   mPolyPlaneList.increment();
+   mPlaneTransformer.transform(plane, mPolyPlaneList.last());
+
+   return mPolyPlaneList.size() - 1;
+}
+
+
+//----------------------------------------------------------------------------
+
+void PlaneExtractorPolyList::plane(U32 v1,U32 v2,U32 v3)
+{
+   mPlaneList->last().set(mVertexList[v1],
+      mVertexList[v2],mVertexList[v3]);
+}
+
+void PlaneExtractorPolyList::plane(const PlaneF& p)
+{
+   mPlaneTransformer.transform(p, mPlaneList->last());
+}
+
+void PlaneExtractorPolyList::plane(const U32 index)
+{
+   AssertFatal(index < mPolyPlaneList.size(), "Out of bounds index!");
+   mPlaneList->last() = mPolyPlaneList[index];
+}
+
+const PlaneF& PlaneExtractorPolyList::getIndexedPlane(const U32 index)
+{
+   AssertFatal(index < mPolyPlaneList.size(), "Out of bounds index!");
+   return mPolyPlaneList[index];
+}
+
+
+//----------------------------------------------------------------------------
+
+bool PlaneExtractorPolyList::isEmpty() const
+{
+   return true;
+}
+
+void PlaneExtractorPolyList::begin(BaseMatInstance*,U32)
+{
+   mPlaneList->increment();
+}
+
+void PlaneExtractorPolyList::end()
+{
+   // See if there are any duplicate planes
+   PlaneF &plane = mPlaneList->last();
+   PlaneF *ptr = mPlaneList->begin();
+   for (; ptr != &plane; ptr++)
+      if (mFabs(ptr->d - plane.d) < DistanceEpsilon &&
+            mDot(*ptr,plane) > NormalEpsilon) {
+         mPlaneList->decrement();
+         return;
+      }
+}
+
+void PlaneExtractorPolyList::vertex(U32)
+{
+}
+