Last active
June 6, 2018 05:55
-
-
Save gabrielflorit/c88dc42cef715a2f6e7237f056193b4c to your computer and use it in GitHub Desktop.
SCRIPT-8
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// title: Trigo-2 | |
/* eslint-disable no-global-assign */ | |
initialState = { | |
x: 0 | |
} | |
update = state => { | |
state.x += 0.01 * Math.PI | |
if (state.x > Math.PI) { | |
state.x = -Math.PI | |
} | |
} | |
draw = state => { | |
clear() | |
// origin | |
const o = { x: 64, y: 64 } | |
// axes | |
line(o.x, 0, o.x, 128, 6) | |
line(0, o.y, 128, o.y, 6) | |
const r = 20 | |
// draw sine | |
range(-0.5, 0.5, 0.01).forEach(i => { | |
const angle = i * 2 * Math.PI | |
const x = angle | |
const y = Math.sin(angle) | |
rectFill(o.x + r * x, o.y + r * y, 1, 1, 0) | |
}) | |
// draw axes markers | |
circFill(o.x + r * state.x, o.y, 2, 0) | |
circFill(o.x, o.y + r * Math.sin(state.x), 2, 0) | |
// draw marker | |
circFill(o.x + r * state.x, o.y + r * Math.sin(state.x), 3, 7) | |
circStroke(o.x + r * state.x, o.y + r * Math.sin(state.x), 4, 0) | |
print(0, 0, 'sine', 0) | |
// // draw a circle | |
// const points = 90 | |
// const angle = 360 / points | |
// const radius = 62 | |
// range(points).forEach(i => { | |
// const a = i * -angle * Math.PI / 180 | |
// const x = 64 + radius * Math.cos(a) | |
// const y = 64 + radius * Math.sin(a) | |
// circFill(x, y, 2, 0) | |
// }) | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment