public override void PreRender()
{
UpdateGeometry();
// figuring out a decent line width is tricky. Want to be responsive to camera
// pos, so line doesn't get super-thick when zoomed in. So we want to measure
// screen-space radius. But off-screen vertices are a problem. So, only consider
// vertices within a level, pointing-forward view cone (can't be actual view cone
// because then line thickness changes as you turn head!).
//
// Also sub-sample verts for efficiency. Probably we don't need to do this
// every frame...but how to distribute?
if (EnableLineRenderer)
{
float fNewWidth = VRUtil.EstimateStableCurveWidth(GetScene(),
GetLocalFrame(CoordSpace.SceneCoords), curve, SceneGraphConfig.DefaultSceneCurveVisualDegrees);
if (fNewWidth > 0)
{
visibleWidth = fNewWidth;
LineRenderer r = root.GetComponent <LineRenderer>();
r.startWidth = r.endWidth = visibleWidth;
}
}
}
void update_geometry(FScene s)
{
if (bUpdatePending == false && curve_timestamp == curve.Timestamp)
{
return;
}
if (curve.VertexCount < 2)
{
return;
}
update_vertices(s);
int N = (curve.Closed) ? curve.VertexCount + 1 : curve.VertexCount;
Vector3f[] vertices = new Vector3f[N];
for (int i = 0; i < N; ++i)
{
vertices[i] = (Vector3f)curve[i % curve.VertexCount];
}
curveObject.SetVertices(vertices);
float fWidth = VRUtil.EstimateStableCurveWidth(s, Frame3f.Identity, curve,
SceneGraphConfig.DefaultSceneCurveVisualDegrees);
if (fWidth > 0)
{
curveObject.SetLineWidth(fWidth);
}
bUpdatePending = false;
curve_timestamp = curve.Timestamp;
}
void update_geometry(FScene s)
{
if (bUpdatePending == false && curve_timestamp == curve.Timestamp)
{
return;
}
if (curve.VertexCount < 2)
{
return;
}
update_vertices(s);
verticesf.Clear();
buffer.Clear();
for (int i = 0; i < curve.VertexCount; ++i)
{
buffer.Add(curve[i % curve.VertexCount]);
}
if (CurveProcessorF != null)
{
CurveProcessorF(buffer);
}
int Nmod = buffer.Count;
int N = (curve.Closed) ? buffer.Count + 1 : buffer.Count;
for (int i = 0; i < N; ++i)
{
verticesf.Add((Vector3f)buffer[i % Nmod]);
}
curveObject.SetVertices(verticesf);
float fWidth = VRUtil.EstimateStableCurveWidth(s, Frame3f.Identity, curve,
SceneGraphConfig.DefaultSceneCurveVisualDegrees);
if (fWidth > 0)
{
curveObject.SetLineWidth(fWidth);
}
bUpdatePending = false;
curve_timestamp = curve.Timestamp;
}