Turns an Image into an oscillating spiral that can be drawn with a plotter. Will export SVG and also PDF.

v1.3

• support live preview
• support PDF export
• choose centerpoint with mouse or numeric box

v1.4

• support transparency
• remove mask color function
• check to see if the image format is supported on open
• automatically calculate ampScale

v1.5

• fixed the spiral data could be out of the display size range
• support drawing in white on a black canvas
• draw a guide frame around the original image
• rename clear display button to view original
• draw a checkered pattern as a canvas to make the transparent image easier to see

v1.6

• added color mode
• support for inkscape layered SVG

v1.7

• fixed a problem where the save path was always the sketch folder