context: provide a way to provide a distance at which to start the dash pattern #64
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This CL modifies the vgimg backend implementation to use fogleman/gg instead of llgcode/draw2d. This CL adds consistent handling of DPI for the fogleman/gg backend. The old backend required to be communicated the current DPI for the image. This new backend does not, as the DPI is only needed for the font. gg handles fonts via golang.org/x/image/font.Face that embeds the DPI upon creation of that font. The vg/vgimg.Canvas carries its own DPI information and propagates it correctly upon font registration and creation. This evacuates the need to communicate the current DPI to gg. Note that the fogleman/gg backend does not have support for dash lines with offsets and needs to be eventually implemented upstream. Updates fogleman/gg#64. Fixes #231. Fixes #470.
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sbinet
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sbinet
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gg.Context.SetDash(or some other method?) should provide a way to specify an offset into the dash sequence.gonum/plotwould need it to properly implement thevg.Canvasinterface, usingggas a backend forpng, ... images:SetLineDashmethod)The text was updated successfully, but these errors were encountered: