private static void Run(Mesh originalMesh, string outputPath, int targetCount)
{
Stopwatch stopwatch = Stopwatch.StartNew();
PrintMeshInfo("Input", originalMesh.vertexCount, originalMesh.trisCount);
float t1 = stopwatch.ElapsedMilliseconds;
Mesh simplifiedMesh = originalMesh.Simplify(targetCount);
float t2 = stopwatch.ElapsedMilliseconds - t1;
STLParser.SaveSTL(simplifiedMesh, outputPath);
PrintMeshInfo("Output", simplifiedMesh.vertexCount, simplifiedMesh.trisCount);
float t3 = stopwatch.ElapsedMilliseconds - t2;
Console.WriteLine();
Console.WriteLine($"Execution details [ms]." +
$"\nOverall time: {t1 + t2 + t3}" +
$"\n STL Loading: {t1}" +
$"\n QEM Algorithm: {t2}" +
$"\n STL Saving: {t3}");
}
private static void Main(string[] args)
{
if (args.Length == 1 && args[0] == "help")
{
Console.WriteLine("STL Quadric Error Metrics Help:");
Console.WriteLine("qem [input_path] [output_path] only STL file format is supported");
Console.WriteLine("\nOptional args:");
Console.WriteLine("-q [quality] approximate target number of triangles based on a 0-1 range float. Default is 0.5");
Console.WriteLine("-t [trisCount] specific target number of triangles");
return;
}
if (args.Length != 2 && args.Length != 4)
{
PrintErrorMessage($"Incorrect number of arguments ({args.Length}) Try using 2 or 4 args total.");
return;
}
var inputPath = args[0];
var outputPath = args[1];
if (inputPath == outputPath)
{
PrintErrorMessage($"Input path same as output path. This is not permitted to prevent data loss.");
return;
}
Mesh originalMesh = STLParser.LoadSTL(inputPath);
string message = "";
int targetCount = -1;
if (args.Length == 2)
{
message = "?";
targetCount = (int)(0.5f * originalMesh.trisCount);
}
else if (args.Length == 4)
{
message = "parsing error";
if (args[2] == "-q")
{
message += " -float";
float f;
if (float.TryParse(args[3], out f))
{
if (f > 0f && f < 1f)
{
targetCount = (int)(f * originalMesh.trisCount);
}
}
}
else if (args[2] == "-t")
{
message += " -int";
int i;
if (int.TryParse(args[3], out i))
{
targetCount = i;
}
}
}
if (targetCount == -1)
{
PrintErrorMessage(message);
return;
}
if (targetCount <= 0 || targetCount >= originalMesh.trisCount)
{
PrintErrorMessage($"Incorrect number of target tris {targetCount}");
return;
}
Console.WriteLine($"\nSimplifing to a target number of triangles -> {targetCount} <- \n");
Run(originalMesh, outputPath, targetCount);
}
