在JES中使用Jython制作拼贴画

Question

我有一个学校项目，我必须创建一个拼贴画，多次显示图像，每个图像都有变化。我对前一张图片的填充尺寸有一个问题，但是解决了这个问题，现在又出现了另一个问题。当运行拼贴程序时，它为每个功能创建一个不同的图像来更改图像，然后它显示一个空白的画布，其中包含消息＆＃34;图片，文件名无高度700宽度515＆＃34;在JES。我需要将所有图像显示在一个画布上并进行更改。任何帮助表示赞赏

def copy(sourcePic,targetPic, tarX, tarY):
  pictureTurtle = makePicture(getMediaPath("turtle.jpg"))
  targetX = tarX
  for sourceX in range(0, getWidth(sourcePic)):
    targetY = tarY
    for sourceY in range(0, getHeight(sourcePic)):
      pxColor = getPixel(sourcePic, sourceX, sourceY)
      txColor = getPixel(targetPic, targetX, targetY)
      target = targetY + 1
    targetX = targetX + 1



def lighten(pictureTurtle):
  pictureTurtle = makePicture(getMediaPath("turtle.jpg"))
  for pxColor in getPixels(pictureTurtle):
    color = getColor(pxColor)
    color = makeLighter(color)
    setColor(pxColor, color)
  show(pictureTurtle)



def negative(pictureTurtle):
  pictureTurtle = makePicture(getMediaPath("turtle.jpg"))
  for pxColor in getPixels(pictureTurtle):
    red = getRed(pxColor)
    green = getGreen(pxColor)
    blue = getBlue(pxColor)
    negColor = makeColor(255-red,255-green,255-green)
    setColor(pxColor, negColor)
  show(pictureTurtle)



def grayscale(pictureTurtle):
  pictureTurtle = makePicture(getMediaPath("turtle.jpg"))
  for pxColor in getPixels(pictureTurtle):
    intensity = (getRed(pxColor)+getBlue(pxColor))/3
    setColor(pxColor,makeColor(intensity,intensity,intensity))
  show(pictureTurtle)


def rotate(pictureTurtle):
  pictureTurtle = makePicture(getMediaPath("turtle.jpg"))
  w,h = getWidth(pictureTurtle), getHeight(pictureTurtle)
  for y in xrange(h):
    for x in xrange(w):
      color = getColor(getPixel(pictureTurtle, x, y))
      targetPixel = getPixel(pictureTurtle, x, y)
      setColor(targetPixel, color)
  show(pictureTurtle)

def collage():
  pictureTurtle = makePicture(getMediaPath("turtle.jpg"))
  canvas = makeEmptyPicture(515, 700)
  copy(pictureTurtle,canvas,0,getHeight(canvas)-getHeight(pictureTurtle)-5)
  lighten(pictureTurtle)
  copy(pictureTurtle,canvas,50,getHeight(canvas)-getHeight(pictureTurtle)-5)
  negative(pictureTurtle)
  copy(pictureTurtle,canvas,100,getHeight(canvas)-getHeight(pictureTurtle)-5)
  grayscale(pictureTurtle)
  copy(pictureTurtle,canvas,12,75-5)
  rotate(pictureTurtle)
  copy(pictureTurtle, canvas,62, 75-5)
  show(canvas)
  return(canvas)