void Awake()
{
//Create a cube showing full HSV range.
//Assign a HSV color based on position to every particle
//This uses the 'ParticleProto' API. You create some prototype particles and emit these.
int count = 0;
const int num = 80;
ParticleProto[] p = new ParticleProto[num * num * num];
for (int i = 0; i < num; ++i)
{
for (int j = 0; j < num; ++j)
{
for (int k = 0; k < num; ++k)
{
p[count].Position = new Vector3((float)i / num, (float)j / num, (float)k / num) * 2.0f - Vector3.one;
p[count].Color = Color.HSVToRGB((float)i / num, (float)j / num, (float)k / num);
p[count].Size = 1.0f; //Note: Multiplicative with size set in TC Particles, so particles aren't 1 unit large
p[count].Velocity = Vector3.zero;
++count;
}
}
}
//Submit the buffer to emit
GetComponent <TCParticleSystem>().Emit(p);
}
void SpawnPointCloud()
{
Stopwatch sw = new Stopwatch();
sw.Start();
Profiler.BeginSample("Setup");
var bytes = File.ReadAllBytes(Path.Combine(Application.streamingAssetsPath, StreamPclPath));
var binReader = new PclBinaryReader(bytes);
StringBuilder curStr = new StringBuilder();
int pointCount = 0;
List <PropType> m_types = new List <PropType>();
bool inVertElement = false;
bool binary = false;
Profiler.EndSample();
Profiler.BeginSample("Read headers");
while (true)
{
char cur = binReader.ReadChar();
if (cur == '\n')
{
string line = curStr.ToString();
if (line == "end_header")
{
break;
}
var lines = line.Split(' ');
if (lines[0] == "format")
{
binary = lines[1] == "binary_big_endian";
}
else if (lines[0] == "element")
{
if (lines[1] == "vertex")
{
pointCount = int.Parse(lines[2]);
inVertElement = true;
}
else
{
inVertElement = false;
}
}
else if (inVertElement && lines[0] == "property" && lines[1] != "list")
{
if (lines[1] == "float" || lines[1] == "float32")
{
m_types.Add(PropType.Float);
}
if (lines[1] == "uchar" || lines[1] == "uint8")
{
m_types.Add(PropType.Byte);
}
}
curStr.Length = 0;
curStr.Capacity = 0;
}
else
{
curStr.Append(cur);
}
}
Profiler.EndSample();
Profiler.BeginSample("Parse points");
var points = new ParticleProto[pointCount];
bool hasColor = m_types.Count(c => c == PropType.Byte) >= 3;
int typeCount = m_types.Count;
float[] parseFloats = new float[typeCount];
byte[] parseBytes = new byte[typeCount];
for (int i = 0; i < pointCount; ++i)
{
var floatsParsed = 0;
var bytesParsed = 0;
for (var prop = 0; prop < typeCount; ++prop)
{
var type = m_types[prop];
if (type == PropType.Float)
{
float val = binary ? binReader.ReadSingle() : binReader.ReadAsciiFloat();
parseFloats[floatsParsed++] = val;
}
else
{
byte val = binary ? binReader.ReadByte() : binReader.ReadAsciiByte();
parseBytes[bytesParsed++] = val;
}
}
float x = parseFloats[0] * Scale;
float y = parseFloats[1] * Scale;
float z = parseFloats[2] * Scale;
if (hasColor && !UseRainbow)
{
byte r = parseBytes[0];
byte g = parseBytes[1];
byte b = parseBytes[2];
points[i].Color.r = r / 255.0f;
points[i].Color.g = g / 255.0f;
points[i].Color.b = b / 255.0f;
points[i].Color.a = 1.0f;
}
else if (UseRainbow)
{
//No color -> Rainbow color!
points[i].Color = Color.HSVToRGB(Mathf.Repeat(x + y + z, 1.0f), 1, 1);
}
points[i].Position.x = x;
points[i].Position.y = y;
points[i].Position.z = z;
points[i].Size = 1.0f;
}
Profiler.EndSample();
GetComponent <TCParticleSystem>().Emit(points);
}
