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)
{
// prepare points data
const int COUNT = 300;
var buffer = new Float32Buffer(0);
buffer.Reserve(COUNT * 3);
var colors = new Float32Buffer(0);
Random random = new Random();
for (int i = 0; i < COUNT; i++)
{
float x = 2000 * (float)random.NextDouble() - 1000;
float y = 2000 * (float)random.NextDouble() - 1000;
float z = 2000 * (float)random.NextDouble() - 1000;
buffer.Append(x, y, z);
colors.Append((float)random.NextDouble(), (float)random.NextDouble(), (float)random.NextDouble());
}
var primitive = GeometryBuilder.CreatePoints(new Float32Array(buffer), new Float32Array(colors));
// prepare point material
var material = PointsMaterial.Create("points-material");
material.SetSizeAttenuation(false);
material.SetPointSize(15.0f);
material.SetColorMap(ImageTexture2D.Create(GetResourcePath("textures/snowflake7_alpha.png")));
material.SetTransparent(true);
// enable vertex color
material.GetTemplate().SetVertexColors(true);
// add to scene
var node = new PrimitiveSceneNode(primitive, material);
node.SetPickable(false);
render.ShowSceneNode(node);
}
public override void Run(RenderControl render)
{
// prepare lines data
const int COUNT = 300;
var buffer = new Float32Buffer(0);
buffer.Reserve(COUNT * 3);
var colors = new Float32Buffer(0);
Random random = new Random();
for (int i = 0; i < COUNT; i++)
{
float x = 20 * (float)random.NextDouble() - 10;
float y = 20 * (float)random.NextDouble() - 10;
float z = 20 * (float)random.NextDouble() - 10;
buffer.Append(x, y, z);
colors.Append((float)random.NextDouble(), (float)random.NextDouble(), (float)random.NextDouble());
}
var primitive = GeometryBuilder.CreateLines(new Float32Array(buffer), null, new Float32Array(colors));
GeometryBuilder.ComputeLineDistances(primitive);
// prepare dashed line material
var material = LineDashedMaterial.Create("dashed-line");
// enable vertex color
material.SetVertexColors(true);
material.SetDashSize(1.0f);
// add to scene
var node = new PrimitiveSceneNode(primitive, material);
render.ShowSceneNode(node);
}
bool ReadData()
{
if (mPositions != null)
{
return(true);
}
string fileName = GetResourcePath("cloud.xyz");
using (StreamReader reader = File.OpenText(fileName))
{
mPositions = new Float32Buffer(0);
mColors = new Float32Buffer(0);
while (!reader.EndOfStream)
{
var line = reader.ReadLine();
var items = line.Split(' ');
if (items.Length != 6)
{
continue;
}
for (int ii = 0; ii < 3; ++ii)
{
mPositions.Append(float.Parse(items[ii]));
}
for (int ii = 3; ii < 6; ++ii)
{
mColors.Append(float.Parse(items[ii]) / 255.0f);
}
}
}
return(true);
}
