Create a schematic line segment

How a drawn line LOOKS, measured off the page image.

Every field is a measurement of ink, so every field is optional: a stroke traced through a colour-blind fallback has no color, and one too short to hold a full dash period has no pattern. width_px and dash_array are in the pixels of the page image the trace ran on (PAGE_IMAGE_DPI), the same frame as a segment's pixel_path.

This says nothing about what the line IS. A drawing's key maps an appearance to a kind of line, and that mapping is neither stored here nor needed to record what was measured.

How a drawn line LOOKS, measured off the page image.

Every field is a measurement of ink, so every field is optional: a stroke traced through a colour-blind fallback has no color, and one too short to hold a full dash period has no pattern. width_px and dash_array are in the pixels of the page image the trace ran on (PAGE_IMAGE_DPI), the same frame as a segment's pixel_path.

This says nothing about what the line IS. A drawing's key maps an appearance to a kind of line, and that mapping is neither stored here nor needed to record what was measured.