dotted line pattern support #39
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Canvas gets several new calls: `setLinePattern` accepts a LinePattern object for setting a pattern a line can optionally use `setLinePatternLength` allows the length of the line pattern to be set `setLinePatternOffset` allows the offset within the pattern to be adjusted `setLineOptions` sets whether a line should be drawn as a dotted line, and whether its first and/or last points should be omitted BitmappedDisplayController’s `PaintState` object now includes `linePattern`, `lineOptions` and `linePatternLength`. `genericAbsDrawLine` now looks at the `lineOptions` in the current paint state to determine whether a dotted line should be drawn, and whether first or last points should be omitted fabutils gains a `getBit` function which will get a bit at an index within an array of uint8_t numbers. the position is in “most significant bit” order, i.e. bitIndex 0 is the bit representing 128 in the first byte in the array
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Adds support for dotted lines plotting, essentially as per Acorn's dot-dash line plotting whereby a pattern of 1-64 bits in length can be applied to a line this will be used and form part of the next release of the console8 agon-vdp (2.7.0) |
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Canvas gets several new calls:
setLinePatternaccepts a LinePattern object for setting a pattern a line can optionally usesetLinePatternLengthallows the length of the line pattern to be setsetLinePatternOffsetallows the offset within the pattern to be adjustedsetLineOptionssets whether a line should be drawn as a dotted line, and whether its first and/or last points should be omittedBitmappedDisplayController’s
PaintStateobject now includeslinePattern,lineOptionsandlinePatternLength.genericAbsDrawLinenow looks at thelineOptionsin the current paint state to determine whether a dotted line should be drawn, and whether first or last points should be omittedfabutils gains a
getBitfunction which will get a bit at an index within an array of uint8_t numbers. the position is in “most significant bit” order, i.e. bitIndex 0 is the bit representing 128 in the first byte in the array