private static void CheckImageRendering(ImageInputRenderer inputRenderer, int imgWidth, int imgHeight, int boxWidth, int boxHeight)
{
const int margin = 20;
using (var canvas = new Image <Rgba32>(boxWidth + 2 * margin, boxHeight + 2 * margin))
{
var renderArea = new Rectangle(margin, margin, boxWidth, boxHeight);
canvas.Mutate(ctx =>
{
ctx.Fill(Rgba32.AliceBlue);
using (var img = GenerateImage(imgWidth, imgHeight))
{
inputRenderer.Render(ctx, renderArea, img);
}
});
for (var y = 0; y < canvas.Height; y++)
{
for (var x = 0; x < margin; x++)
{
Assert.True(canvas[x, y] == Rgba32.AliceBlue, $"Image was rendered outside the drawing canvas at ({x}, {y})");
}
if (y < margin || y >= canvas.Height - margin)
{
for (var x = margin; x < canvas.Width - margin; x++)
{
Assert.True(canvas[x, y] == Rgba32.AliceBlue, $"Image was rendered outside the drawing canvas at ({x}, {y})");
}
}
for (var x = canvas.Width - margin; x < canvas.Width; x++)
{
Assert.True(canvas[x, y] == Rgba32.AliceBlue, $"Image was rendered outside the drawing canvas at ({x}, {y})");
}
}
}
}
public void ImageRenderingWithinBoundariesTiling(int imgWidth, int imgHeight, int boxWidth, int boxHeight)
{
var renderer = new ImageInputRenderer(ImageScalingMode.Tile, new GraphicsOptions
{
Antialias = true,
AntialiasSubpixelDepth = 8
});
CheckImageRendering(renderer, imgWidth, imgHeight, boxWidth, boxHeight);
}