private static string Serialize(Scene scene, double scale)
{
var vertices = new StringBuilder();
var faces = new StringBuilder();
var indexesBase = 1;
for (var surfaceIndex = 0; surfaceIndex < scene.Surfaces.Count; surfaceIndex++)
{
var figure = scene.Surfaces[surfaceIndex];
foreach (var point in figure.Points)
{
vertices.AppendLine(
string.Format(
CultureInfo.InvariantCulture,
"v {0} {1} 0.0",
-point.X * scale,
-point.Y * scale));
}
faces.AppendLine($"g {surfaceIndex}");
faces.AppendLine($"f {string.Join(" ", Enumerable.Range(indexesBase, figure.Points.Count))}");
indexesBase += figure.Points.Count;
}
return vertices.ToString() + faces;
}
public void Export(Scene scene, double scale = 1.0)
{
var answer = _saveDialog.ShowDialog();
if (answer.HasValue && answer.Value)
{
File.WriteAllText(_saveDialog.FileName, Serialize(scene, scale));
}
}
private void SetState(Scene scene)
{
if (_scene == scene)
{
return;
}
_scene = scene;
for (int i = 0; i < _scene.Surfaces.Count; i++)
{
if (i >= _shapes.Count)
{
_shapes.Add(new Surface());
}
_shapes[i].SetState(_scene.Surfaces[i]);
}
while (_shapes.Count > _scene.Surfaces.Count)
{
_shapes.RemoveAt(_shapes.Count - 1);
}
}