Fixed scaling of inkscrap 0.92 and later

Brix fixed scaling of svg files from the latest version of inkscrape.
shiver-0.0.5.zip

Fixed some over-optimization bugs that were triggered by the new rasterizer

The jerks were too large, but have now been disciplined.

Optimized rastering

This release brings great strides in rastering performance, especially for very large, sparse rasters.

• Switched to a proper fixed-point dithering implementation from the twelve monkeys image library.
• Implemented more detailed SVG output, where CSS classes are used to indicate different kinds of paths, see the embedded stylesheet in the output SVG for details:
  • move: green, thin
  • cut: black, thick
  • engraving with the laser on: dark blue, thick
  • engraving with the laser off: red, half-thick
  • engraving acceleration: yellow, half-thick
• Implemented two new rastering modes, selectable via the photonsaw-raster-optimization style parameter:
  • none: The old rastering mode, each line of a raster is scanned at the raster-speed from the first pixel to the last.
  • fast: Sufficiently long blank spaces in each line is traversed at max speed in stead of the raster-speed.
  • fastest: Lines are split into sections which allow distant parts of the image to be rastered individually.

Benchmarks for some different SVGs:

SVG	NONE	FAST	FASTEST
frandsen.svg, low-res	337 s	318 s	302 s
frandsen.svg, high-res	1060 s	995 s	901 s
flemming,svg, high-res	3191 s	2566 s	2005 s
flemming,svg, low-res	1000 s	808 s	707 s

The larger the raster and the more sparse it is, the more advantage there is to the optimization.
See the tool paths in the optimization-data.zip

First release with working cornering

This release fixes the long-standing cornering problem, so motion is now much smoother.

First release of the shiver host-side code

UI-less release of the host-side code, this is useful for using the machine, but there is no fancy UI to point and click at.

To simulate a cut (without moving the machine) use:
java -Ddw.machine.simulating=true -jar shiver-0.0.1.jar svg config.yaml --svg=../speedy/speed-6-25.svg

To cut for real, use:
java -jar shiver-0.0.1.jar svg config.yaml --svg=../speedy/speed-6-25.svg