libgfxbitmap-spin

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This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 library for generic bitmap-oriented drawing routines.

Salient Features

• Line, Circle (not ellipse), Box, Plot primitives
• Text rendering (uses terminal.common.spin[2]h to provide str(), hex(), bin(), printf(), etc)
• Text: 0 or 90 degree-rotated font bitmaps
• Text: Character cell-level or pixel-level positioning (build-time)
• Text: Internal or custom user-provided putchar function pointer
• Copy bitmap to display buffer, with optional offset
• Copy, cut, scale region
• Single-pixel scroll up region
• Integration with most any dot-matrix type display

Requirements

P1/SPIN1:

• 69 bytes global var RAM for settings, configuration
• terminal.common.spinh (provided by spin-standard-library)

P2/SPIN2:

• 69 bytes global var RAM for settings, configuration
• terminal.common.spin2h (provided by p2-spin-standard-library)

Compiler Compatibility

Processor	Language	Compiler	Backend	Status
P1	SPIN1	FlexSpin (6.5.0)	Bytecode	OK
P1	SPIN1	FlexSpin (6.5.0)	Native/PASM	OK
P2	SPIN2	FlexSpin (6.5.0)	NuCode	FTBFS
P2	SPIN2	FlexSpin (6.5.0)	Native/PASM2	OK

(other versions or toolchains not listed are not supported, and may or may not work)

Limitations

• Text rendering is s l o w; needs optimization
• Region scrolling not implemented fully on 1bpp displays