Contours at a fixed step
Drawing a pixel dark where the height modulo the step is small gives contour lines without tracing them. Steeper ground gets thinner lines, which happens to look right.
Made-up landscapes rendered as maps: hillshade, contours and colour ramps.
Drawing a pixel dark where the height modulo the step is small gives contour lines without tracing them. Steeper ground gets thinner lines, which happens to look right.