PeachPDF

PeachDrawing

PeachDrawing Namespace

Classes
ColorMatrixFilter	Applies a ColorMatrix to every pixel: the mechanism behind CSS `grayscale()`, `sepia()`, `saturate()`, `hue-rotate()` and friends, including the cross-channel ones a PDF transfer function cannot express.
DepthBuffer	One depth value per pixel of a RasterSurface of the same size, for composing the planes of a 3D rendering context: larger is nearer the viewer, and a fresh buffer holds negative infinity (nothing drawn). Rented from the shared array pool, so a context costs one object and no garbage.
PathStroker	Turns the line a Pen would draw along a path into an ordinary outline, so the stroke can be filled, clipped to, measured, or combined with other geometry like any other shape.
RasterCanvas	An Canvas that paints into a RasterSurface instead of a PDF content stream. It exists for the effects PDF cannot express in vector form; the bitmap it produces is embedded back into the PDF by the graphics that asked for it (BeginRasterSurface(Rect, Nullable<double>)).
RasterLayerEffects	Applies the LayerEffects of a LayerOptions to the pixels of a raster surface. A Canvas that draws layers through raster surfaces calls this from its `ApplyLayerEffects`; RasterCanvas does.
RasterRenderContext	A RenderContext for drawing directly onto a RasterCanvas canvas with no HTML, CSS, layout, or PDF document involved. CreateCanvas(int, int, double) is the entry point: `...`
RasterSurfaceEncoding	Encodes a finished RasterSurface’s pixels into bytes a PDF (or any other) embedder can wrap - the “pixels in, encoded bytes out” half of embedding a raster surface in a document. Deliberately has no PDF library dependency: the document-specific wrapping is left to the embedder.
RasterSurfaceFactory	Creates raster surfaces on the shared pixel grid, at an exact physical resolution.
TextOutlineBuilder	Turns a shaped glyph run into a vector GraphicsPath. Shared by every backend’s GetTextOutline(string, Font, PaintPoint, double, Nullable<ShapeSettings>) so they all place glyphs identically - it needs nothing beyond Typeface/Size, so it takes the portable Font directly rather than a backend-specific font wrapper.
Warp	Draws one surface as the picture a Homography makes of it: the raster half of a CSS `perspective` or 3D transform (a PDF `cm` is affine and cannot). Every destination pixel is mapped back through the inverse to the source and sampled there.

Structs
DepthPlane	How deep a plane is (its z over its divisor, larger being nearer the viewer) at each point of it, from the same 4x4 matrix as its Homography: the z of the plane z = 0 after the matrix, and the divisor the map shares.
Homography	A projective map of the plane, a 3x3 matrix acting on the column vector (x, y, 1): the picture a 4x4 CSS transform (perspective included) makes of a flat element. Where an affine System.Numerics.Matrix3x2 keeps parallel lines parallel, this does not; the third row is what makes the difference (the divisor `W`).