Processing编程【2】

彩虹下的小车

int  x=0, y=height;void setup() {  size(500, 500);}void draw() {  int i;  int X=0;  background(0, 0, 255);  for (i=1000; i>=650; i-=50, X+=37)  {    colorMode(HSB, 360, 255, 100);    stroke(X, 255, 100);    strokeWeight(50);    fill(0, 0, 255);    ellipse(width, height, i, i);  }  drawCar(x, height-20, 20);  x++;  if (x > width+20) x = 0;}void drawCar(int posx, int posy, int thesize){  rectMode(CENTER);  stroke(0);  rect(posx, posy-20, thesize, thesize / 14);  int offset = 20;  drawWheel(posx - offset, posy - offset+30, offset);  drawWheel(posx + offset, posy - offset+30, offset);}// Draw a wheel at (posx, posy) and use offset to // determine its size.void drawWheel (int posx, int posy, int offset){  noStroke();  fill(0);  ellipse (posx, posy,offset, offset);}

水波模拟

float r=0, r2=0, r3=0, r4=0;float c=0, c2=0, c3=0, c4=0;void setup(){  size(600, 600);  background(255);}void draw(){  noStroke();  frameRate(70);  fill(c);  ellipse(width/2, height/2, r+10, r+10);  fill(255);  ellipse(width/2, height/2, r, r);  c=c+1;  r=r+1;  //while(r>50)  //{  if (r>50)  {    fill(c2);    ellipse(width/2, height/2, r2+10, r2+10);    fill(255);    ellipse(width/2, height/2, r2, r2);    c2=c2+0.7;    r2=r2+1;  }  if (r2>50)  {    fill(c3);    ellipse(width/2, height/2, r3+10, r3+10);    fill(255);    ellipse(width/2, height/2, r3, r3);    c3=c3+0.7;    r3=r3+1;  }  if (r3>50)  {    fill(c4);    ellipse(width/2, height/2, r4+10, r4+10);    fill(255);    ellipse(width/2, height/2, r4, r4);    c4=c4+0.7;    r4=r4+1;  }}

几何连线

float w=0, h=0;int i, j, k,X=0;void setup(){  background(255);  size(500, 500);  drawline();}void drawline() {  for (k=1; k<=4; k++,X+=60)   {    for (i=1; i<=2; i++)    {      for (j=1; j<=2; j++)      {        strokeWeight(4);        colorMode(HSB, 360, 255, 100);        stroke(X, 255, 100);        line(width*i/3, w, h, height*j/3);      }    }    if(k==1){h=0;w=width;}    if(k==2){w=0;h=height;}    if(k==3){w=width;h=height;}  }}