明確概念
弧度：弧長(zhǎng)等于半徑的弧為1，float angle = radians(N)
rectMode(CENTER)：默認(rèn)繪制長(zhǎng)方形是以左上角為起始點(diǎn)，rectMode(CENTER) interprets the first two parameters of rect() as the shape's center point, while the third and fourth parameters are its width and height.
pushMatrix/popMatrix：當(dāng)需要修改坐標(biāo)系系統(tǒng)時(shí)使用，The pushMatrix() function saves the current coordinate system to the stack and popMatrix() restores the prior coordinate system.
translate：修改坐標(biāo)系圓點(diǎn)的位置，translate(x, y, z)
rotate：The coordinates are always rotated around their relative position to the origin(origin即坐標(biāo)系的圓點(diǎn)), rotate(radians)
sin/cos: amplitude * sin/cos(angle)，angle確定數(shù)值，amplitude確定數(shù)值在y坐標(biāo)上的表現(xiàn)
beginShape()/endShape(): 用于繪制復(fù)雜圖形的開(kāi)始和結(jié)束，vertex(x, y)用于確定圖形中的各個(gè)點(diǎn)
明確功能
1.多個(gè)長(zhǎng)方形在空間中旋轉(zhuǎn)
功能設(shè)計(jì)
類：Mover
屬性：location，aVelocity，aAcceleration，size
方法：move()，display()
偽代碼
setup(){
}
draw(){
? ? mover.move()
? ? mover.display()
}
class Mover{
? ? 定義屬性
? ? Mover(){}
????定義方法
}
正式代碼
見(jiàn)：
Processing/Oscilation at master · JoeyQiang/Processing · GitHub
代碼優(yōu)化
1.沿著速度方向轉(zhuǎn)
