public ExtractImageCommand()
: base("image", "Extract image from chart")
{
var input =
new Option <FileInfo>("--input", "Input file")
{
IsRequired = true
};
var output =
new Option <FileInfo>("--output", "Output file")
{
IsRequired = true
};
this.Add(input);
this.Add(output);
this.SetHandler(
async(FileInfo input, FileInfo output) =>
{
using var inputStream = input.OpenRead();
var chart = await BsbChartReader.ReadChartAsync(inputStream);
var image = chart.ToImage();
using var outputStream = output.OpenWrite();
image.SaveAsPng(outputStream);
},
input,
output);
}
public async Task ReadsTextSegment()
{
using var stream = await MockChartStream.CreateAsync(
new[] {
"KNP/SC=40000,GD=WGS84,PR=Mercator,PP=48.666667,PI=4.000,SK=0.000000\r\n",
" TA=90.000000,UN=METRES,SD=Lower Low Water Large Tide,DX=4.000000\r\n",
" DY=4.000000\r\n",
"KNQ/EC=WE,GD=WGE,VC=HHLT,SC=LLLT,PC=MC,P1=0.000000,P2=48.666667\r\n",
" P3=NOT_APPLICABLE,P4=NOT_APPLICABLE,GC=UB,RM=INVERSE\r\n"
},
1);
var chart = await BsbChartReader.ReadChartAsync(stream);
Assert.NotNull(chart);
Assert.NotNull(chart.TextSegment);
var textSegment = chart.TextSegment.ToArray();
Assert.Equal(2, textSegment.Length);
Assert.Equal("KNP", textSegment[0].EntryType);
Assert.Equal("KNQ", textSegment[1].EntryType);
Assert.Equal(1, chart.BitDepth.Value);
}
public async Task ImageConversionTest()
{
using var stream = File.OpenRead("../../../../../assets/test/344102.KAP");
var chart = await BsbChartReader.ReadChartAsync(stream);
using var actualImage = chart.ToImage();
using var expectedImage = await Image.LoadAsync <Rgba32>("../../../../../assets/test/344102.png");
ImageAssert.Equal(expectedImage, actualImage);
}
public async Task ReadSampleChart()
{
using var stream = File.OpenRead("../../../../../assets/test/344102.KAP");
var chart = await BsbChartReader.ReadChartAsync(stream);
Assert.NotNull(chart);
Assert.NotNull(chart.TextSegment);
Assert.NotNull(chart.RasterSegment);
Assert.Equal(2098, chart.RasterSegment.Count());
uint index = 1;
foreach (var row in chart.RasterSegment)
{
Assert.Equal(index++, row.Key);
Assert.Equal <uint>(1171, row.Value.Aggregate <BsbRasterRun, uint>(0, (sum, run) => sum + run.Length));
}
}
