// Handles the first face in the cut, starting from cutstart,
// and running anticlockwise to first reference vertex
private float PopulateSingleCutFacePositiveDirection(ref CrossSection face, OpenMetaverse.Vector3 cutPoint, int quadrant,
float halfCubeWidth, bool outer)
{
V3ToV3Xna XnaOMV = new V3ToV3Xna();
quadrant = NormalizeQuadrant(quadrant);
face.RemoveAllPoints();
OpenMetaverse.Vector3 startPoint = cutPoint;
OpenMetaverse.Vector3 endPoint;
if (quadrant < NumberFaces - 1)
{
endPoint = XnaOMV.V3XToV3(ReferenceVertices[quadrant + 1] * halfCubeWidth / 0.5f);
}
else
{
endPoint = XnaOMV.V3XToV3(ReferenceVertices[0] * halfCubeWidth / 0.5f);
}
if (outer)
{
face.AddPoint(startPoint);
face.AddPoint(endPoint);
}
else
{
face.AddPoint(endPoint);
face.AddPoint(startPoint);
}
return OpenMetaverse.Vector3.Distance(startPoint, endPoint);
}
private float PopulateCompleteSide(ref CrossSection face, int quadrant, float halfCubeWidth, bool outer)
{
V3ToV3Xna XnaOMV = new V3ToV3Xna();
quadrant = NormalizeQuadrant(quadrant);
face.RemoveAllPoints();
OpenMetaverse.Vector3 startPoint = XnaOMV.V3XToV3(ReferenceVertices[quadrant]);
OpenMetaverse.Vector3 endPoint;
if (quadrant < NumberFaces - 1)
{
endPoint = XnaOMV.V3XToV3(ReferenceVertices[quadrant + 1]);
}
else
{
endPoint = XnaOMV.V3XToV3(ReferenceVertices[0]);
}
startPoint = startPoint * halfCubeWidth / 0.5f;
endPoint = endPoint * halfCubeWidth / 0.5f;
if (outer)
{
face.AddPoint(startPoint);
face.AddPoint(endPoint);
}
else
{
face.AddPoint(endPoint);
face.AddPoint(startPoint);
}
return 2f * halfCubeWidth;
}