在processing中通过鼠标控制矩阵中矩形的大小

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int x=0; int y=0; int dx=10; int dy=10; void setup(){ size(200,200); } /*void draw(){ while(x<=200){ x+=20; while(y<=200){ rect(x,y,dx,dy); y+=20; } } }*/ void draw(){ background(255); for(x=0;x<=200;x+=20){ for(y=0;y<=200;y+=20){ rect(x,y,constrain(abs(x-mouseX)/10,1,20),constrain(abs(y-mouseY)/10,1,20)); } } /* if (mousePressed){ dx=constrain(abs(x-mouseX)/10,1,20); dy=constrain(abs(y-mouseY)/10,1,20); }*/ }