public static IImageProcessingContext Rotate(this IImageProcessingContext source, float degrees, Vector2 origin)
{
var affineBuilder = new AffineTransformBuilder();
affineBuilder.AppendRotationDegrees(degrees, origin);
source.Transform(affineBuilder);
return(source);
}
/// <summary>
/// Performs an affine transform of an image using the specified sampling algorithm.
/// </summary>
/// <param name="ctx">The <see cref="IImageProcessingContext"/>.</param>
/// <param name="sourceRectangle">The source rectangle</param>
/// <param name="builder">The affine transform builder.</param>
/// <param name="sampler">The <see cref="IResampler"/> to perform the resampling.</param>
/// <returns>The <see cref="IImageProcessingContext"/> to allow chaining of operations.</returns>
public static IImageProcessingContext Transform(
this IImageProcessingContext ctx,
Rectangle sourceRectangle,
AffineTransformBuilder builder,
IResampler sampler)
{
Matrix3x2 transform = builder.BuildMatrix(sourceRectangle);
Size targetDimensions = TransformUtilities.GetTransformedSize(sourceRectangle.Size, transform);
return(ctx.Transform(sourceRectangle, transform, targetDimensions, sampler));
}
/// <summary>
/// Performs an affine transform of an image using the specified sampling algorithm.
/// </summary>
/// <typeparam name="TPixel">The pixel format.</typeparam>
/// <param name="ctx">The <see cref="IImageProcessingContext{TPixel}"/>.</param>
/// <param name="sourceRectangle">The source rectangle</param>
/// <param name="builder">The affine transform builder.</param>
/// <param name="sampler">The <see cref="IResampler"/> to perform the resampling.</param>
/// <returns>The <see cref="Image{TPixel}"/></returns>
public static IImageProcessingContext <TPixel> Transform <TPixel>(
this IImageProcessingContext <TPixel> ctx,
Rectangle sourceRectangle,
AffineTransformBuilder builder,
IResampler sampler)
where TPixel : struct, IPixel <TPixel>
{
Matrix3x2 transform = builder.BuildMatrix(sourceRectangle);
Size targetDimensions = TransformUtils.GetTransformedSize(sourceRectangle.Size, transform);
return(ctx.Transform(sourceRectangle, transform, targetDimensions, sampler));
}
protected void ProjectLayerOntoSurface(IImageProcessingContext <Rgba32> context, Matrix <float> transformMatrix)
{
var matrix4x4 = new System.Numerics.Matrix4x4(
transformMatrix[0, 0], transformMatrix[1, 0], 0, transformMatrix[2, 0],
transformMatrix[0, 1], transformMatrix[1, 1], 0, transformMatrix[2, 1],
0, 0, 1, 0,
transformMatrix[0, 2], transformMatrix[1, 2], 0, transformMatrix[2, 2]
);
context.Transform(matrix4x4, KnownResamplers.Lanczos3);
foreach (var mask in Masks)
{
context.Opacity(0, mask);
}
}
/// <summary>
/// Performs a projective transform of an image using the specified sampling algorithm.
/// </summary>
/// <param name="ctx">The <see cref="IImageProcessingContext"/>.</param>
/// <param name="builder">The projective transform builder.</param>
/// <param name="sampler">The <see cref="IResampler"/> to perform the resampling.</param>
/// <returns>The <see cref="IImageProcessingContext"/> to allow chaining of operations.</returns>
public static IImageProcessingContext Transform(
this IImageProcessingContext ctx,
ProjectiveTransformBuilder builder,
IResampler sampler) =>
ctx.Transform(new Rectangle(Point.Empty, ctx.GetCurrentSize()), builder, sampler);
/// <summary>
/// Performs an affine transform of an image using the specified sampling algorithm.
/// </summary>
/// <typeparam name="TPixel">The pixel format.</typeparam>
/// <param name="ctx">The <see cref="IImageProcessingContext{TPixel}"/>.</param>
/// <param name="builder">The affine transform builder.</param>
/// <param name="sampler">The <see cref="IResampler"/> to perform the resampling.</param>
/// <returns>The <see cref="Image{TPixel}"/></returns>
public static IImageProcessingContext <TPixel> Transform <TPixel>(
this IImageProcessingContext <TPixel> ctx,
AffineTransformBuilder builder,
IResampler sampler)
where TPixel : struct, IPixel <TPixel>
=> ctx.Transform(new Rectangle(Point.Empty, ctx.GetCurrentSize()), builder, sampler);
