AgonConsole8 / vdp-gl

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dotted line pattern support #8

Closed stevesims closed 7 months ago

stevesims commented 9 months ago

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