PeachDrawing
PeachDrawing.RasterCanvas
RasterCanvas.PixelsPerPoint Property
The scale between this graphics context’s own coordinate space and true points (1/72 inch):
a backend whose coordinates are inflated relative to a point (for example a layout space
running at a higher pixels-per-inch than 72) reports that inflation here.
1.0 (the base, no-op default) is correct for any Canvas whose
coordinate space is not inflated this way; a backend whose space is overrides this with its
real value. A caller that needs to compute a transform matrix whose
*linear* (scale/rotation) part won’t itself be divided by this factor before use - a backend
may divide only a matrix’s translation, not M11/M12/M21/M22 -
reads this to pre-divide that part itself (an SVG viewBox-to-viewport transform is such a
case: its “scale” is a ratio of an inflated length to a never-inflated, dimensionless user
unit, so it is not already scale-neutral the way an ordinary scale() transform is).
public override double PixelsPerPoint { get; }