bool ReadData()
{
if (mPositions != null)
{
return(true);
}
string fileName = GetResourcePath("pressure.json");
using (StreamReader reader = File.OpenText(fileName))
{
JObject obj = JObject.Parse(reader.ReadToEnd());
var postionsToken = obj["data"]["attributes"]["position"]["array"].Children().ToList();
mPositions = new Float32Buffer(0);
mPositions.Reserve((uint)postionsToken.Count);
foreach (var token in postionsToken)
{
float val = token.ToObject <float>();
mPositions.Append(val);
}
mColorTable = new ColorLookupTable();
mColorTable.SetMaxValue(2000);
mColorTable.SetColorMap(ColorMapKeyword.Create(EnumSystemColorMap.Rainbow));
mColors = new Float32Buffer((uint)postionsToken.Count);
var pressureToken = obj["data"]["attributes"]["pressure"]["array"].Children().ToList();
mPressures = new Float32Buffer(0);
mPressures.Reserve((uint)pressureToken.Count);
uint idx = 0;
foreach (var token in pressureToken)
{
float val = token.ToObject <float>();
mPressures.Append(val);
var clr = mColorTable.GetColor(val);
mColors.SetValue(idx * 3, clr);
++idx;
}
}
return(true);
}
public override void Run(RenderControl render)
{
//1. Create Shape
TopoShapeList tg = new TopoShapeList();
GPntList points = new GPntList();
using (var sr = new StreamReader(GetResourcePath("data/Stage4_Rotor4_Profile.curve")))
{
string line;
while ((line = sr.ReadLine()) != null)
{
if (line.StartsWith("# Profile"))
{
if (points.Count > 0)
{
var temp2 = SketchBuilder.MakeBSpline(points);
if (temp2 != null)
{
tg.Add(temp2);
}
}
points = new GPntList();
}
else
{
var temp = line.Split('\t');
points.Add(new GPnt(double.Parse(temp[0]), double.Parse(temp[1]), double.Parse(temp[2])));
}
}
}
var shape = FeatureTool.Loft(tg, true, true);
//2. Compute Curvature
var material = BasicMaterial.Create("vertex-color");
material.SetVertexColors(true);
material.SetFaceSide(EnumFaceSide.DoubleSide);
var bs = new BufferShape(shape, material, null, 0.01f);
bs.Build();
ColorLookupTable clt = new ColorLookupTable();
clt.SetColorMap(ColorMapKeyword.Create(EnumSystemColorMap.Rainbow));
float scale = 100;
clt.SetMinValue(-0.2f * scale);
clt.SetMaxValue(scale);
for (uint ii = 0; ii < bs.GetFaceCount(); ++ii)
{
var sc = new SurfaceCurvature(bs);
if (sc.Compute(ii, EnumCurvatureType.MeanCurvature))
{
Console.WriteLine("{0}, {1}", sc.GetMinValue(), sc.GetMaxValue());
var colorBuffer = sc.ComputeColors(clt, scale);
bs.SetVertexColors(ii, colorBuffer);
}
}
// 3. Show it!
var node = new BrepSceneNode(bs);
render.ShowSceneNode(node);
}
