我使用Processing for Python制作程序来绘制分形摇摆线,并且弧函数似乎没有绘制任何东西;
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("*/*");
String[] mimetypes = {"application/zip", "text/plain"};
intent.putExtra(Intent.EXTRA_MIME_TYPES, mimetypes);
} else {
intent.setType("application/zip");
}
startActivityForResult(intent, SELECT_ZIP_FILE);
当我运行此代码时,直线绘制完美,具有所需的黑色边缘,因此:
,程序按预期输出size(400,400)
noFill()
strokeCap(SQUARE)
import copy
roadcolour=(255,255,255)
edgecolour=(0,0,0)
roadwidth=10
edgewidth=1
coords=(100,100)
h=0
class Straight:
def __init__(self,l):
self.l=l
def sketch(self):
newcoords=(coords[0]+(cos(radians(h))*self.l),coords[1]+(sin(radians(h))*self.l))
strokeWeight(roadwidth+edgewidth)
stroke(*edgecolour)
line(coords[0],coords[1],newcoords[0],newcoords[1])
strokeWeight(roadwidth)
stroke(*roadcolour)
line(coords[0],coords[1],newcoords[0],newcoords[1])
return newcoords,h
class Arc:
def __init__(self,direction,degs,r):
self.r=r
self.dir=direction
self.degs=degs
def sketch(self):
if self.dir=="R":
centre=(coords[0]+(cos(radians(h+90))*self.r),coords[1]+(sin(radians(h+90))*self.r))
starth=(h-90)%360
endh=(starth+self.degs)%360
newcoords=(centre[0]+(cos(radians(endh))*self.r),centre[1]+(sin(radians(endh))*self.r))
else:
centre=(coords[0]+(cos(radians(h-90))*self.r),coords[1]+(sin(radians(h-90))*self.r))
endh=(h+90)%360
starth=(endh-self.degs)%360
newcoords=(centre[0]+(cos(radians(starth))*self.r),centre[1]+(sin(radians(starth))*self.r))
centre=roundcoords(centre)
newcoords=roundcoords(newcoords)
print(centre,starth,endh,newcoords)
strokeWeight(roadwidth+edgewidth)
stroke(*edgecolour)
arc(centre[0],centre[1],self.r*2,self.r*2,radians(starth),radians(endh))
strokeWeight(roadwidth)
stroke(*roadcolour)
arc(centre[0],centre[1],self.r*2,self.r*2,radians(starth),radians(endh))
return newcoords,h
def roundcoords(coords):
return (int(coords[0]+0.5),int(coords[1]+0.5))
a=Arc('R',90,100)
a.sketch()
s=Straight(100)
s.sketch()
。
然而,正如你所看到的,它并没有画出任何弧线;程序不会中断;弧线根本不是绘制的。为什么会这样,我该如何解决?
答案 0 :(得分:1)
我认为这是因为你必须确保starth<结束,在你的例子中并非如此。
相反,您可以绘制这两个弧中的一个:
arc(centre[0],centre[1],self.r*2,self.r*2,radians(endh),radians(starth))
arc(centre[0],centre[1],self.r*2,self.r*2,radians(starth),2*PI+radians(endh))
我希望它能解决你的问题:)