starMoire.md

Make a starburst Moire

Tags: minimicro

A moiré pattern is an interesting pattern that can appear when you draw a series of lines close together on a display with limited pixel resolution. Write a Mini Micro program to produce this specific pattern:

(Note: when viewed inline above, it may be less than full size, which changes the Moiré pattern significantly. You might be able to see it properly by following this link.)

This has 200 lines, evenly spaced around a circle 300 pixels in radius. The colors interpolate between yellow and blue six times around the circle.

Hints

• Use a for loop to iterate between 0 and 2*pi in 200 steps.
• Use cos and sin to calculate the amount of x and y (on a scale of -1 to 1) there is at each angle.
• Multiply these by the radius, and add to your center point, to find the endpoint of the line.
• For the color, use cos again... but this time, multiply your angle by 6, so that the value cycles six times over the course of the loop.
• To interpolate between two colors, use color.lerp.