直线y=x

shp = splineShape()
select shp
spln = addNewSpline shp
for i = 1 to 1000 do
(

addKnot shp spln  #corner #line [i*5,0,i*5]
)

converttosplineshape shp 
updateShape shp

---螺旋线函数

shp = splineShape()
select shp
spln = addNewSpline shp
for i = 1 to 1000 do
(
 x =sin (i)--+80
 y =cos (i)--+80
 z=(i/20.)-----这个里面就是能形成梯形台
 ---** 这个要是使用整数就是梯形台效果。
 
addKnot shp spln  #corner #line [x*20,y*20,z]
addKnot shp spln  #corner #line [x*20,y*20,z]
)
 
converttosplineshape shp
updateShape shp

--- 张口螺旋线函数

shp = splineShape()
select shp
spln = addNewSpline shp
a=10.
b=10.
for i = 1 to 1000 do
(
 x =sin (i)--+80
 y =cos (i)--+80
 z=(i/20.)
   a=a+1
 b=b+1
 z=(i/2.)
addKnot shp spln  #corner #line [(x*a),(y*b),z]
)
 
converttosplineshape shp
updateShape shp

--- 闭口螺旋线函数
shp = splineShape()
select shp
spln = addNewSpline shp
a=990
b=990
for i = 1 to 1000 do
(
 x =sin (i)--+80
 y =cos (i)--+80

   a=a-1
 b=b-1
 z=(i/2.)
addKnot shp spln  #corner #line [(x*a),(y*b),z]
)
 
converttosplineshape shp
updateShape shp

----渐开线
shp = splineShape()
select shp
spln = addNewSpline shp
r=1
for i = 1 to 1000 do
(
 ang=360*i
 s=2*3.14*r*i
 x0= s*cos(ang)
 y0 =s*sin (ang)
 
 x =x0+s*sin(ang)
 y =y0+s*cos(ang)
 z=0

addKnot shp spln  #corner #line [x*20,y*20,z]
)
 
converttosplineshape shp
updateShape shp

----飞碟线

shp = splineShape()
select shp
spln = addNewSpline shp
a=990
b=990
z
for i = 1 to 1000 do
(
 x =sin (i)--+80
 y =cos (i)--+80
 if a <=-10 then
 (
   exit
  
 )else
 (
   a=a-1
 b=b-1
 z=(i/2.)
 )
addKnot shp spln  #corner #line [(x*a),(y*b),z]
)
for i = 1001 to 2000 do
(
 x =sin (i)--+80
 y =cos (i)--+80

  
 a=a+1
 b=b+1
 z=((i)/2.)
addKnot shp spln  #corner #line [(x*a),(y*b),z]
)
converttosplineshape shp
updateShape shp

------------- 抛物线的绘制
shp = splineShape()
select shp
spln = addNewSpline shp

for i = 1 to 100. do
(

 
 x =4*i
 y =(3*i+5*i^2)
 z=0

addKnot shp spln  #corner #line [x,z,y]
)
 
converttosplineshape shp
updateShape shp