graph-drawing - 绘制抛物线

Question

我现在必须绘制实心抛物线我只是使用以下方法绘制抛物线：

double dt = 0.0001;
for(double x = -50; x < 50; x+= dt){ // drawing parabola from -50 to 50
    double y = x*x;
    pic.drawPoint(x, y, cr, cg, cb); // x point, y point , R G B
}

我应该在这里更改什么以使其填充抛物线的内部？

Answer 1

解决了我刚刚添加了另一个循环

double dt = 0.0001;
for(double x = -50; x < 50; x+= dt){ // drawing parabola from -50 to 50
   double y = x*x;
   for(double yy = y; yy < maxY; yy+=dt){ 
       pic.drawPoint(x, yy, cr, cg, cb); // x point, y point , R G B
  }  
}