
在圓內畫一個六邊形
void setup(){
size(500,500);
}
void draw(){
ellipse(250,250, 480,480);
for(float angle=0; angle<PI*2; angle+=PI/3){
triangle(250,250,
250+240*cos(angle), 250+240*sin(angle),
250+240*cos(angle+PI/3), 250+240*sin(angle+PI/3) );
}
}

void setup(){
size(500,500);
}
void draw(){
ellipse(250,250, 480,480);
for(float angle=0; angle<PI*2; angle+=PI/3){
for(int R=0; R<=240; R+=30){
noFill();
triangle(250,250,
250+R*cos(angle), 250+R*sin(angle),
250+R*cos(angle+PI/3), 250+R*sin(angle+PI/3) );
}
}
}

void setup(){
size(800,400);
}
void myTriangle(int cx, int cy){
float a= -PI/2;
for(int R=15; R>0; R-=5){
triangle( cx+R*cos(a), cy+R*sin(a),
cx+R*cos(a+2*PI/3), cy+R*sin(a+2*PI/3),
cx+R*cos(a-2*PI/3), cy+R*sin(a-2*PI/3) );
}
}
void draw() {
background(255);
for(int cx=20; cx<800; cx+=40){
for(int cy=20; cy<800; cy+=40){
myTriangle(cx,cy);
}
}
}

PImage imgMario;
float marioX=0, marioY=0, marioVX=5, marioVY=10;
void setup(){
size(400,600);
imgMario = loadImage("mario.png");
}
void draw(){
background(255);
image(imgMario, marioX, marioY, 100,150);
marioX += marioVX;
marioY += marioVY;
}
void keyPressed(){
if(keyCode==UP) {marioY-=5;}
if(keyCode==DOWN) {marioY+=5;}
if(keyCode==LEFT) {marioX-=5;}
if(keyCode==RIGHT) {marioX+=5;}
}

PImage imgMario;
float marioX=0, marioY=0, marioVX=2, marioVY=0, marioAX=0, marioAY=0.1;
void setup(){
size(400,600);
imgMario = loadImage("mario.png");
}
void draw(){
//background(255);
image(imgMario, marioX, marioY, 100,150);
marioX += marioVX; marioY += marioVY;
marioVX += marioAX; marioVY += marioAY;
}
void keyPressed(){
if(keyCode==UP) {marioY-=5;}
if(keyCode==DOWN) {marioY+=5;}
if(keyCode==LEFT) {marioX-=5;}
if(keyCode==RIGHT) {marioX+=5;}
}

PImage imgMario;
float marioX=0, marioY=100, marioVX=1, marioVY=0, marioAX=0, marioAY=0.1;
void setup(){
size(400,600);
imgMario = loadImage("mario.png");
}
void draw(){
//background(255);
image(imgMario, marioX, marioY, 100,150);
marioX += marioVX; marioVX+=0;
marioY += marioVY; marioVY += 0.98;
if(marioY>500){
marioVY = - marioVY * 0.8;
marioY=500;
}
if(marioX>300) marioVX = -marioVX;
}
void keyPressed(){
if(keyCode==UP) {marioY-=5;}
if(keyCode==DOWN) {marioY+=5;}
if(keyCode==LEFT) {marioX-=5;}
if(keyCode==RIGHT) {marioX+=5;}
}
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