PShape world;
void setup(){
size(800,400);
world = loadShape("world.svg");
}
float s=0.4;
void draw(){
background(#92C2F5);
scale(s);//改用變數s初始值是0.4
shape(world);
}
void mouseWheel(MouseEvent e){
if(e.getCount()>0) s*=1.1;
else s*=0.9;
}
PShape world;
void setup(){
size(800,400);
world = loadShape("world.svg");
}
float s=0.4,x=0,y=0;
void draw(){
background(#92C2F5);
translate(x,y); //要再加上一個移動量x,y
scale(s);//改用變數s初始值是0.4
shape(world);
}
void mouseDragged(){ //void mouseDragged()
x+=mouseX - pmouseX;
y+= mouseY - pmouseY;
}
void mouseWheel(MouseEvent e){
if(e.getCount()>0) s*=1.1;
else s*=0.9;
}
size(600,500);
background(0);
stroke(255);
fill(0);//去背景色
ellipse(50,50,100,100);
void setup(){
size(600,500);
background(0);
stroke(255);
fill(0);
}
void draw(){
//ellipse(mouseX,mouseY,100,100);
}
void mousePressed(){
ellipse(mouseX,mouseY,100,100);
}
PShape world;
void setup(){
size(800,400);
world = loadShape("world.svg");
}
float s=0.4,x=0,y=0;
float realX =0 ,realY=0;//地圖上的真實座標
void draw(){
background(#92C2F5);
translate(x,y); //要再加上一個移動量x,y
scale(s);//改用變數s初始值是0.4
shape(world);
ellipse(realX,realY,10,10);
}
void mouseDragged(){ //void mouseDragged()
x+=mouseX - pmouseX;
y+= mouseY - pmouseY;
}
void mouseWheel(MouseEvent e){
realX=(mouseY - x) / s; //地圖上的真實座標
realY=(mouseX - y) / s;//地圖上的真實座標
float oldS=s;
if(e.getCount()>0) s*=1.1;
else s*=0.9;
x = x+realX*oldS-realX*s;
y = y+realY*oldS-realY*s;
}
//中心+真實座標*s== mouseX,mouseY
//
//舊中心+真實座標*舊S == 新中心+真實座標*新s
void setup(){
size(600,500);
background(0);
stroke(255);
fill(0);
}
void draw(){
//ellipse(mouseX,mouseY,100,100);
}
float s=25;
void mousePressed(){
ellipse(mouseX,mouseY,s,s);
if(mouseButton==LEFT) s*=1.1; //變大
if(mouseButton==RIGHT) s*=0.9;//變小
}
void setup(){
size(600,500);
background(0);//黑畫一次
stroke(255);
fill(0);
}
void draw(){
//ellipse(mouseX,mouseY,100,100);
}
float s=25,t=0;
void mousePressed(){
ellipse(300+200*cos(t),250+200*sin(t),s,s);
t+=0.06;
if(mouseButton==LEFT) s*=1.1;
if(mouseButton==RIGHT) s*=0.9;
}
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