public virtual void Update()
{
base.begin_update();
if (MeshSource == null)
{
throw new Exception("MeshVertexDisplacementOp: must set valid MeshSource to compute!");
}
if (DisplacementSource == null)
{
throw new Exception("MeshVertexDisplacementOp: must set valid DisplacementSource to compute!");
}
DMesh3 meshIn = MeshSource.GetDMeshUnsafe();
IVectorDisplacement displace = DisplacementSource.GetDisplacement();
if (displace.Count != 0 && displace.Count != meshIn.MaxVertexID)
{
throw new Exception("MeshVertexDisplacementOp: inconsistent counts " + displace.Count.ToString() + " != " + meshIn.MaxVertexID.ToString());
}
DMesh3 mesh = new DMesh3(meshIn, MeshHints.None);
//if (!mesh.HasVertexNormals)
// MeshNormals.QuickCompute(mesh);
if (displace.Count > 0)
{
gParallel.ForEach(mesh.VertexIndices(), (vid) => {
Vector3d dv = displace.GetDisplacementForIndex(vid);
//Vector3f n = mesh.GetVertexNormal(vid);
Vector3d v = mesh.GetVertex(vid);
v += dv;
mesh.SetVertex(vid, v);
});
if (enable_heat_map)
{
// compute max displace len
ColorMap map = new ColorMap();
map.AddPoint(0, Colorf.CornflowerBlue);
float d = (float)HeatMapMaxDistance;
map.AddPoint(d, Colorf.Orange);
map.AddPoint(2 * d, Colorf.VideoYellow);
map.AddPoint(4 * d, Colorf.VideoRed);
map.AddPoint(-d, Colorf.VideoMagenta);
float max_displace = d;
gParallel.ForEach(mesh.VertexIndices(), (vid) => {
Vector3f dv = (Vector3f)displace.GetDisplacementForIndex(vid);
Vector3f n = mesh.GetVertexNormal(vid);
float sign = n.Dot(dv) > 0 ? 1 : -1;
Colorf c = map.Linear(dv.Length * sign);
Colorf existing_c = mesh.GetVertexColor(vid);
float preserve__max = max_displace / 2;
float t = MathUtil.Clamp(dv.Length / preserve__max, 0.0f, 1.0f);
c = (1.0f - t) * existing_c + (t) * c;
mesh.SetVertexColor(vid, c);
//float t = MathUtil.Clamp(dv.Length / max_displace, -1.0f, 1.0f);
//mesh.SetVertexColor(vid, t * Colorf.Orange);
});
}
}
MeshNormals.QuickCompute(mesh);
DisplacedMesh = mesh;
base.complete_update();
}