public void LargeGeoJson_Lines(TestImageProvider <Rgba32> provider, string geoJsonFile, int aa, float sx, float sy)
{
string jsonContent = File.ReadAllText(TestFile.GetInputFileFullPath(geoJsonFile));
PointF[][] points = PolygonFactory.GetGeoJsonPoints(jsonContent, Matrix3x2.CreateScale(sx, sy));
using Image <Rgba32> image = provider.GetImage();
var options = new DrawingOptions()
{
GraphicsOptions = new GraphicsOptions()
{
Antialias = aa > 0, AntialiasSubpixelDepth = aa
},
};
foreach (PointF[] loop in points)
{
image.Mutate(c => c.DrawLines(options, Color.White, 1.0f, loop));
}
string details = $"_{System.IO.Path.GetFileName(geoJsonFile)}_{sx}x{sy}_aa{aa}";
image.DebugSave(
provider,
details,
appendPixelTypeToFileName: false,
appendSourceFileOrDescription: false);
}
public void LargeGeoJson_Mississippi_Lines(TestImageProvider <Rgba32> provider, int pixelOffset)
{
string jsonContent = File.ReadAllText(TestFile.GetInputFileFullPath(TestImages.GeoJson.States));
FeatureCollection features = JsonConvert.DeserializeObject <FeatureCollection>(jsonContent);
Feature missisipiGeom = features.Features.Single(f => (string)f.Properties["NAME"] == "Mississippi");
Matrix3x2 transform = Matrix3x2.CreateTranslation(-87, -54)
* Matrix3x2.CreateScale(60, 60)
* Matrix3x2.CreateTranslation(pixelOffset, pixelOffset);
IReadOnlyList <PointF[]> points = PolygonFactory.GetGeoJsonPoints(missisipiGeom, transform);
using Image <Rgba32> image = provider.GetImage();
foreach (PointF[] loop in points)
{
image.Mutate(c => c.DrawLines(Color.White, 1.0f, loop));
}
// Very strict tolerance, since the image is sparse (relaxed on .NET Framework)
ImageComparer comparer = TestEnvironment.IsFramework
? ImageComparer.TolerantPercentage(1e-3f)
: ImageComparer.TolerantPercentage(1e-7f);
string details = $"PixelOffset({pixelOffset})";
image.DebugSave(provider, details, appendPixelTypeToFileName: false, appendSourceFileOrDescription: false);
image.CompareToReferenceOutput(comparer, provider, testOutputDetails: details, appendPixelTypeToFileName: false, appendSourceFileOrDescription: false);
}
private Image <Rgba32> FillGeoJsonPolygons(TestImageProvider <Rgba32> provider, string geoJsonFile, int aa, Vector2 scale, Vector2 pixelOffset)
{
string jsonContent = File.ReadAllText(TestFile.GetInputFileFullPath(geoJsonFile));
PointF[][] points = PolygonFactory.GetGeoJsonPoints(jsonContent, Matrix3x2.CreateScale(scale) * Matrix3x2.CreateTranslation(pixelOffset));
Image <Rgba32> image = provider.GetImage();
var options = new DrawingOptions()
{
GraphicsOptions = new GraphicsOptions()
{
Antialias = aa > 0, AntialiasSubpixelDepth = aa
},
};
var rnd = new Random(42);
byte[] rgb = new byte[3];
foreach (PointF[] loop in points)
{
rnd.NextBytes(rgb);
var color = Color.FromRgb(rgb[0], rgb[1], rgb[2]);
image.Mutate(c => c.FillPolygon(options, color, loop));
}
return(image);
}
static PointF[][] GetPoints(FeatureCollection features)
{
Feature state = features.Features.Single(f => (string)f.Properties["NAME"] == "Mississippi");
Matrix3x2 transform = Matrix3x2.CreateTranslation(-87, -54)
* Matrix3x2.CreateScale(60, 60);
return(PolygonFactory.GetGeoJsonPoints(state, transform).ToArray());
}
protected override PointF[][] GetPoints(FeatureCollection features)
{
Feature state = features.Features.Single(f => (string)f.Properties["NAME"] == "Utah");
Matrix3x2 transform = Matrix3x2.CreateTranslation(-60, -40)
* Matrix3x2.CreateScale(60, 60);
return(PolygonFactory.GetGeoJsonPoints(state, transform).ToArray());
}
public void Missisippi_Skia(int offset)
{
string jsonContent = File.ReadAllText(TestFile.GetInputFileFullPath(TestImages.GeoJson.States));
FeatureCollection features = JsonConvert.DeserializeObject <FeatureCollection>(jsonContent);
Feature missisipiGeom = features.Features.Single(f => (string)f.Properties["NAME"] == "Mississippi");
Matrix3x2 transform = Matrix3x2.CreateTranslation(-87, -54)
* Matrix3x2.CreateScale(60, 60)
* Matrix3x2.CreateTranslation(offset, offset);
IReadOnlyList <PointF[]> points = PolygonFactory.GetGeoJsonPoints(missisipiGeom, transform);
var path = new SKPath();
foreach (PointF[] pts in points.Where(p => p.Length > 2))
{
path.MoveTo(pts[0].X, pts[0].Y);
for (int i = 0; i < pts.Length; i++)
{
path.LineTo(pts[i].X, pts[i].Y);
}
path.LineTo(pts[0].X, pts[0].Y);
}
var imageInfo = new SKImageInfo(10000, 10000);
using var paint = new SKPaint
{
Style = SKPaintStyle.Stroke,
Color = SKColors.White,
StrokeWidth = 1f,
IsAntialias = true,
};
using var surface = SKSurface.Create(imageInfo);
SKCanvas canvas = surface.Canvas;
canvas.Clear(new SKColor(0, 0, 0));
canvas.DrawPath(path, paint);
string outDir = TestEnvironment.CreateOutputDirectory("Skia");
string fn = System.IO.Path.Combine(outDir, $"Missisippi_Skia_{offset}.png");
using SKImage image = surface.Snapshot();
using SKData data = image.Encode(SKEncodedImageFormat.Png, 100);
using FileStream fs = File.Create(fn);
data.SaveTo(fs);
}
protected virtual PointF[][] GetPoints(FeatureCollection features) => features.Features .SelectMany(f => PolygonFactory.GetGeoJsonPoints(f, Matrix3x2.CreateScale(60, 60))) .ToArray();
