void TerrainConvex::getFeatures(const MatrixF& mat,const VectorF& n, ConvexFeature* cf)
{
U32 i;
cf->material = 0;
cf->object = mObject;
// Plane is normal n + support point
PlaneF plane;
plane.set(support(n),n);
S32 vertexCount = cf->mVertexList.size();
// Emit vertices on the plane
S32* vertexListPointer;
if (halfA)
vertexListPointer = square ? sVertexList[(split45 << 1) | 1]: sVertexList[4];
else
vertexListPointer = square ? sVertexList[(split45 << 1)] : sVertexList[4];
S32 pm = 0;
S32 numVerts = *vertexListPointer;
vertexListPointer += 1;
for (i = 0; i < numVerts; i++)
{
Point3F& cp = point[vertexListPointer[i]];
cf->mVertexList.increment();
mat.mulP(cp,&cf->mVertexList.last());
pm |= 1 << vertexListPointer[i];
}
// Emit Edges
S32* ep = (square && halfA)?
(split45 ? sEdgeList45A[pm]: sEdgeList135A[pm]):
(split45 ? sEdgeList45[pm]: sEdgeList135[pm]);
S32 numEdges = *ep;
S32 edgeListStart = cf->mEdgeList.size();
cf->mEdgeList.increment(numEdges);
ep += 1;
for (i = 0; i < numEdges; i++)
{
cf->mEdgeList[edgeListStart + i].vertex[0] = vertexCount + ep[i * 2 + 0];
cf->mEdgeList[edgeListStart + i].vertex[1] = vertexCount + ep[i * 2 + 1];
}
// Emit faces
S32* fp = split45 ? sFaceList45[pm]: sFaceList135[pm];
S32 numFaces = *fp;
fp += 1;
S32 faceListStart = cf->mFaceList.size();
cf->mFaceList.increment(numFaces);
for (i = 0; i < numFaces; i++)
{
cf->mFaceList[faceListStart + i].normal = normal[fp[i * 4 + 0]];
cf->mFaceList[faceListStart + i].vertex[0] = vertexCount + fp[i * 4 + 1];
cf->mFaceList[faceListStart + i].vertex[1] = vertexCount + fp[i * 4 + 2];
cf->mFaceList[faceListStart + i].vertex[2] = vertexCount + fp[i * 4 + 3];
}
}
void BoxConvex::getFeatures(const MatrixF& mat,const VectorF& n, ConvexFeature* cf)
{
cf->material = 0;
cf->object = mObject;
S32 v = 0;
v += (n.x >= 0)? 1: 0;
v += (n.y >= 0)? 2: 0;
v += (n.z >= 0)? 4: 0;
PlaneF plane;
plane.set(getVertex(v),n);
// Emit vertex and edge
S32 mask = 0;
Corner& corner = sCorner[v];
mask |= isOnPlane(getVertex(corner.a),plane)? 1: 0;
mask |= isOnPlane(getVertex(corner.b),plane)? 2: 0;
mask |= isOnPlane(getVertex(corner.c),plane)? 4: 0;
switch(mask) {
case 0: {
cf->mVertexList.increment();
mat.mulP(getVertex(v),&cf->mVertexList.last());
break;
}
case 1:
emitEdge(v,corner.a,mat,cf);
break;
case 2:
emitEdge(v,corner.b,mat,cf);
break;
case 4:
emitEdge(v,corner.c,mat,cf);
break;
case 1 | 2:
emitFace(corner.ab,mat,cf);
break;
case 2 | 4:
emitFace(corner.bc,mat,cf);
break;
case 1 | 4:
emitFace(corner.ac,mat,cf);
break;
}
}
void WaterPlane::_getWaterPlane( const Point3F &camPos, PlaneF &outPlane, Point3F &outPos )
{
outPos = getPosition();
outPlane.set( outPos, Point3F(0,0,1) );
}
