/// <summary>
/// Create a new cache slaved to a specific projection.
/// </summary>
public GdiCache(BitmapProjection projection)
{
Projection = projection ?? throw new ArgumentNullException(nameof(projection));
}
protected override void SolveInstance(IGH_DataAccess access)
{
List <IGdiGoo> shapes = new List <IGdiGoo>();
Rectangle3d boundary = Rectangle3d.Unset;
double factor = 1.0;
Color background = Color.Transparent;
bool antialias = true;
string file = null;
access.GetDataList(0, shapes);
if (!access.GetData(1, ref boundary))
{
return;
}
if (!access.GetData(2, ref factor))
{
return;
}
if (!access.GetData(3, ref background))
{
return;
}
if (!access.GetData(4, ref antialias))
{
return;
}
if (!access.GetData(5, ref file))
{
return;
}
if (!System.IO.Directory.Exists(System.IO.Path.GetDirectoryName(file)))
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Output folder does not exist.");
return;
}
if (!boundary.IsValid)
{
return;
}
boundary.MakeIncreasing();
if (boundary.Area < 1e-12)
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Bitmap boundary is too small.");
return;
}
if (factor < 1e-12)
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Scaling factor is too small.");
return;
}
int w = (int)(boundary.Width * factor);
int h = (int)(boundary.Height * factor);
if (w <= 0 || h <= 0)
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Bitmap boundary is too narrow.");
return;
}
BitmapProjection projection = new BitmapProjection(boundary, w, h);
Bitmap image = new Bitmap(w, h, PixelFormat.Format32bppArgb);
Graphics graphics = Graphics.FromImage(image);
graphics.Clear(background);
graphics.SmoothingMode = antialias ? SmoothingMode.HighQuality : SmoothingMode.None;
graphics.TextRenderingHint = antialias ? TextRenderingHint.AntiAliasGridFit : TextRenderingHint.SingleBitPerPixelGridFit;
GdiCache cache = new GdiCache(projection);
foreach (IGdiGoo shape in shapes)
{
shape.DrawShape(graphics, cache);
}
cache.Clear();
graphics.Dispose();
if (!string.IsNullOrWhiteSpace(file))
{
ImageFormat format;
switch (System.IO.Path.GetExtension(file).ToLowerInvariant())
{
case ".png":
format = ImageFormat.Png;
break;
case ".jpg":
case ".jpeg":
format = ImageFormat.Jpeg;
break;
case ".bmp":
format = ImageFormat.Bmp;
break;
case ".tif":
case ".tiff":
format = ImageFormat.Tiff;
break;
default:
AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Image extension is unknown, assuming PNG.");
format = ImageFormat.Png;
break;
}
try
{
image.Save(file, format);
}
catch (Exception e)
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Image could not be saved to disk: " + e.Message);
}
}
image.Dispose();
}