draw.txt

一个采用面向对象实现编译解释器,自己验证过绝对能用.

--------------- 函数f												
origin is (200,200);                   -- 设置原点的偏移量
scale is (1, 1);	               -- 设置横坐标和纵坐标的比例
rot is 0 ;                              -- 设置旋转角度
for T from 0 to 200 step 1 draw (t, 0);		-- 横坐标的轨迹
for T from 0 to 180 step 1 draw (0, -t);	-- 纵坐标的轨迹
for T from 0 to 150 step 1 draw (t, -t);    -- 函数f(t)=-t的轨迹

	 
scale is (100, 100);
for T from 0 to 2*PI step PI/1000 draw (cos(t),sin(t));  --画圆

scale is (100, 100);
for T from 0 to 150 step 1 draw (t, t);