size(800,600);
colorMode(HSB,100);
}
void draw(){
line(mouseX,mouseY,pmouseX,pmouseY);
}
void mousePressed(){
if(mouseX<100){///strokeWeight()
}
if(mouseX>700){///stroke()
stroke(mouseY/6.0,100,100);
}
}
void setup(){
size(800,600);
rect(width-100,0,width,height); //左框框
rect(0,0,100,height); //右框框
colorMode(HSB,100);///Q:Hue,Saturation,Brightness,0-100
}
void draw(){
if(mousePressed) line(mouseX,mouseY,pmouseX,pmouseY);
}
void mouseDragged(){ //滑鼠拖曳
if(mouseX<100){///strokeWeight()
strokeWeight(mouseY/50);
}
if(mouseX>width-100){///stroke()
stroke(mouseY/6.0,100,100);
}
}
調色盤:
noStroke();
colorMode(HSB, 100);
for (int i = 0;i < 100; i++) {
for (int j = 0; j < 100; j++) {
stroke(i, 100, 100);
point(i, j);
}
}
ArrayList<Particle> pts;
boolean onPressed, showInstruction;
PFont f;
void setup() {
size(720, 720, P2D);
smooth();
frameRate(30);
colorMode(RGB);
rectMode(CENTER);
pts = new ArrayList<Particle>();
showInstruction = true;
f = createFont("Calibri", 24, true);
background(255);
}
void draw() {
if (showInstruction) {
background(255);
fill(128);
textAlign(CENTER, CENTER);
textFont(f);
textLeading(36);
text("Drag and draw." + "\n" +
"Press 'c' to clear the stage." + "\n"
, width*0.5, height*0.5);
}
if (onPressed) {
for (int i=0;i<10;i++) {
Particle newP = new Particle(mouseX, mouseY, i+pts.size(), i+pts.size());
pts.add(newP);
}
}
for (int i=0; i<pts.size(); i++) {
Particle p = pts.get(i);
p.update();
p.display();
}
for (int i=pts.size()-1; i>-1; i--) {
Particle p = pts.get(i);
if (p.dead) {
pts.remove(i);
}
}
}
void mousePressed() {
onPressed = true;
if (showInstruction) {
background(255);
showInstruction = false;
}
}
void mouseReleased() {
onPressed = false;
}
void keyPressed() {
if (key == 'c') {
for (int i=pts.size()-1; i>-1; i--) {
Particle p = pts.get(i);
pts.remove(i);
}
background(255);
}
}
class Particle{
PVector loc, vel, acc;
int lifeSpan, passedLife;
boolean dead;
float alpha, weight, weightRange, decay, xOffset, yOffset;
color c;
Particle(float x, float y, float xOffset, float yOffset){
loc = new PVector(x,y);
float randDegrees = random(360);
vel = new PVector(cos(radians(randDegrees)), sin(radians(randDegrees)));
vel.mult(random(5));
acc = new PVector(0,0);
lifeSpan = int(random(30, 90));
decay = random(0.75, 0.9);
c = color(random(255),random(255),255);
weightRange = random(3,50);
this.xOffset = xOffset;
this.yOffset = yOffset;
}
void update(){
if(passedLife>=lifeSpan){
dead = true;
}else{
passedLife++;
}
alpha = float(lifeSpan-passedLife)/lifeSpan * 70+50;
weight = float(lifeSpan-passedLife)/lifeSpan * weightRange;
acc.set(0,0);
float rn = (noise((loc.x+frameCount+xOffset)*0.01, (loc.y+frameCount+yOffset)*0.01)-0.5)*4*PI;
float mag = noise((loc.y+frameCount)*0.01, (loc.x+frameCount)*0.01);
PVector dir = new PVector(cos(rn),sin(rn));
acc.add(dir);
acc.mult(mag);
float randDegrees = random(360);
PVector randV = new PVector(cos(radians(randDegrees)), sin(radians(randDegrees)));
randV.mult(0.5);
acc.add(randV);
vel.add(acc);
vel.mult(decay);
vel.limit(3);
loc.add(vel);
}
void display(){
strokeWeight(weight+1.5);
stroke(0, alpha);
point(loc.x, loc.y);
strokeWeight(weight);
stroke(c);
point(loc.x, loc.y);
}
}
void setup() {
size(720,720);
}
void draw(){
}
void mouseDragged(){
ellipse(mouseX, mouseY, 100,100);
}
void setup(){
size(720,720,P2D);
}
float pX=-100,pY=-100,r=100;
void draw(){
ellipse(pX,pY,r,r);
if(r>3){
r-=10;
pX+=13;
}
}
void mousePressed(){
pX=mouseX;pY=mouseY;r=100;
}
size(720,720,P2D);
}
float pX=-100,pY=-100,r=100;
void draw(){
ellipse(pX,pY,r,r);
if(r>3){
r-=10;
pX+=13;
}
}
void mousePressed(){
pX=mouseX;pY=mouseY;r=100;
}
size(500,500);
background(255,174,101);
PImage img=loadImage("dora.jpg");
image(img,90,90,300,300);
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