/// <summary>
/// Public constructor
/// </summary>
public VectorizeDialog(RhinoDoc doc, VectorizeConduit conduit)
{
m_doc = doc;
m_conduit = conduit;
Resizable = false;
ShowHelpButton = false;
Width = 350;
Title = "Vectorize";
Content = CreateTableLayout();
Shown += (sender, e) => UpdateAndRedraw();
}
/// <summary>
/// Command.RunCommand override
/// </summary>
protected override Result RunCommand(RhinoDoc doc, RunMode mode)
{
Potrace.Clear();
// Prompt the user for the name of the image file to vectorize.
string path = GetImageFileName(mode);
if (string.IsNullOrEmpty(path))
{
return(Result.Cancel);
}
// Creates a bitmap from the specified file.
var bitmap = Image.FromFile(path) as Bitmap;
if (null == bitmap)
{
RhinoApp.WriteLine("The specified file cannot be identifed as a supported type.");
return(Result.Failure);
}
// Verify bitmap size
if (0 == bitmap.Width || 0 == bitmap.Height)
{
RhinoApp.WriteLine("Error reading the specified file.");
return(Result.Failure);
}
// Calculate scale factor so curves of a reasonable size are added to Rhino
var unit_scale = (doc.ModelUnitSystem != UnitSystem.Inches)
? RhinoMath.UnitScale(UnitSystem.Inches, doc.ModelUnitSystem)
: 1.0;
var scale = (double)(1.0 / bitmap.HorizontalResolution * unit_scale);
// I'm not convinced this is useful...
if (true)
{
var format = $"F{doc.DistanceDisplayPrecision}";
// Print image size in pixels
RhinoApp.WriteLine("Image size in pixels: {0} x {1}",
bitmap.Width,
bitmap.Height
);
// Print image size in inches
var width = (double)(bitmap.Width / bitmap.HorizontalResolution);
var height = (double)(bitmap.Height / bitmap.VerticalResolution);
RhinoApp.WriteLine("Image size in inches: {0} x {1}",
width.ToString(format, CultureInfo.InvariantCulture),
height.ToString(format, CultureInfo.InvariantCulture)
);
// Image size in in model units, if needed
if (doc.ModelUnitSystem != UnitSystem.Inches)
{
width = (double)(bitmap.Width / bitmap.HorizontalResolution * unit_scale);
height = (double)(bitmap.Height / bitmap.VerticalResolution * unit_scale);
RhinoApp.WriteLine("Image size in {0}: {1} x {2}",
doc.ModelUnitSystem.ToString().ToLower(),
width.ToString(format, CultureInfo.InvariantCulture),
height.ToString(format, CultureInfo.InvariantCulture)
);
}
}
// Convert the bitmap to an Eto bitmap
var eto_bitmap = ConvertBitmapToEto(bitmap);
if (null == eto_bitmap)
{
RhinoApp.WriteLine("Unable to convert image to Eto bitmap.");
return(Result.Failure);
}
// 12-Jan-2021 Dale Fugier
// This should prevent Eto.Drawing.BitmapData.GetPixels() from throwing an exception
if (!IsCompatibleBitmap(eto_bitmap))
{
RhinoApp.WriteLine("The image has an incompatible pixel format. Please select an image with 24 or 32 bits per pixel, or 8 bit indexed.");
return(Result.Failure);
}
// This bitmap is not needed anymore, so dispose of it
bitmap.Dispose();
// Gets the Potrace settings from the plug-in settings file
GetPotraceSettings();
// Create the conduit, which does most of the work
var conduit = new VectorizeConduit(
eto_bitmap,
scale,
doc.ModelAbsoluteTolerance,
m_select_output
? Rhino.ApplicationSettings.AppearanceSettings.SelectedObjectColor
: doc.Layers.CurrentLayer.Color
)
{
Enabled = true
};
if (mode == RunMode.Interactive)
{
// Show the interactive dialog box
var dialog = new VectorizeDialog(doc, conduit);
dialog.RestorePosition();
var result = dialog.ShowSemiModal(doc, RhinoEtoApp.MainWindow);
dialog.SavePosition();
if (result != Result.Success)
{
conduit.Enabled = false;
Potrace.Clear();
doc.Views.Redraw();
return(Result.Cancel);
}
}
else
{
// Show the command line options
var go = new GetOption();
go.SetCommandPrompt("Vectorization options. Press Enter when done");
go.AcceptNothing(true);
while (true)
{
conduit.TraceBitmap();
doc.Views.Redraw();
go.ClearCommandOptions();
// IgnoreArea
var turdsize_opt = new OptionInteger(Potrace.turdsize, 2, 100);
var turdsize_idx = go.AddOptionInteger("FilterSize", ref turdsize_opt, "Filter speckles of up to this size in pixels");
// TurnPolicy
var turnpolicy_idx = go.AddOptionEnumList("TurnPolicy", Potrace.turnpolicy);
// Optimizing
var curveoptimizing_opt = new OptionToggle(Potrace.curveoptimizing, "No", "Yes");
var curveoptimizing_idx = go.AddOptionToggle("Optimizing", ref curveoptimizing_opt);
// Tolerance
var opttolerance_opt = new OptionDouble(Potrace.opttolerance, 0.0, 1.0);
var opttolerance_idx = go.AddOptionDouble("Tolerance", ref opttolerance_opt, "Optimizing tolerance");
// CornerThreshold
var alphamax_opt = new OptionDouble(Potrace.alphamax, 0.0, 100.0);
var alphamax_idx = go.AddOptionDouble("CornerRounding", ref alphamax_opt, "Corner rounding threshold");
// Threshold
var threshold_opt = new OptionDouble(Potrace.Treshold, 0.0, 100.0);
var threshold_idx = go.AddOptionDouble("Threshold", ref threshold_opt, "Threshold");
// RestoreDefaults
var defaults_idx = go.AddOption("RestoreDefaults");
var res = go.Get();
if (res == GetResult.Option)
{
var option = go.Option();
if (null != option)
{
if (turdsize_idx == option.Index)
{
Potrace.turdsize = turdsize_opt.CurrentValue;
}
if (turnpolicy_idx == option.Index)
{
var list = Enum.GetValues(typeof(TurnPolicy)).Cast <TurnPolicy>().ToList();
Potrace.turnpolicy = list[option.CurrentListOptionIndex];
}
if (curveoptimizing_idx == option.Index)
{
Potrace.curveoptimizing = curveoptimizing_opt.CurrentValue;
}
if (opttolerance_idx == option.Index)
{
Potrace.opttolerance = opttolerance_opt.CurrentValue;
}
if (alphamax_idx == option.Index)
{
Potrace.alphamax = alphamax_opt.CurrentValue;
}
if (threshold_idx == option.Index)
{
Potrace.Treshold = threshold_opt.CurrentValue;
}
if (defaults_idx == option.Index)
{
Potrace.RestoreDefaults();
}
}
continue;
}
if (res != GetResult.Nothing)
{
conduit.Enabled = false;
doc.Views.Redraw();
Potrace.Clear();
return(Result.Cancel);
}
break;
}
}
// Group curves
var attributes = doc.CreateDefaultAttributes();
attributes.AddToGroup(doc.Groups.Add());
for (var i = 0; i < conduit.OutlineCurves.Count; i++)
{
var rhobj_id = doc.Objects.AddCurve(conduit.OutlineCurves[i], attributes);
if (m_select_output)
{
var rhobj = doc.Objects.Find(rhobj_id);
if (null != rhobj)
{
rhobj.Select(true);
}
}
}
conduit.Enabled = false;
Potrace.Clear();
doc.Views.Redraw();
// Set the Potrace settings to the plug -in settings file.
SetPotraceSettings();
return(Result.Success);
}