需要指导我的Jython/Python小插曲代码
我在处理我的CGI图片和渐变轮廓头像时遇到了一些问题。我想制作一张渐变效果的图片,要求是图片的边缘稍微暗一些,但中间的部分要保持正常亮度。现在我做的步骤看起来都没问题,但我的图片中间却变得很暗,而不是像我想要的那样,边缘稍微暗一点。
这是我目前的代码:
def main():
inputPic = makePicture(pickAFile())
vignette = makePicture(pickAFile())
addVignette(inputPic, vignette)
def addVignette(inputPic, vignette):
if getWidth(inputPic) == getWidth(vignette) and getHeight(inputPic) == getHeight(vignette):
explore(inputPic)
explore(vignette)
px1 = getPixels(inputPic)
px2 = getPixels(vignette)
for px in getPixels(inputPic):
x = getX(px)
y = getY(px)
px2 = getPixelAt(vignette, x, y)
x2 = getX(px2)
y2 = getY(px2)
r1 = getRed(px)
r2 = getRed(px2)
g1 = getGreen(px)
g2 = getGreen(px2)
b1 = getBlue(px)
b2 = getBlue(px2)
newR = (r1-r2+104)
newG = (g1-g2+88)
newB = (b1-b2+48)
newC = makeColor(newR, newG, newB)
setColor(px, newC)
explore(inputPic)
folder = pickAFolder()
filename = requestString("enter file name: ")
path = folder+filename+".jpg"
writePictureTo(inputPic, path)
https://i.stack.imgur.com/PqW7K.jpg
图片1是我想要的效果
https://i.stack.imgur.com/PtS4U.jpg
图片2是我在编写代码后得到的结果
如果有人能给我一些建议,帮我找到正确的方向,我会非常感激。
1 个回答
0
在我第一次尝试的前三次完全搞错之后,我终于在我小伙伴“取模运算符”的帮助下搞明白了这个问题。
def addVignette(inputPic, vignette):
# Create empty canvas
canvas = makeEmptyPicture(getWidth(inputPic), getHeight(inputPic))
for x in range(0, getWidth(inputPic)):
for y in range(0, getHeight(inputPic)):
px = getPixel(canvas, x, y)
inputPixel = getPixel(inputPic, x, y)
vignettePixel = getPixel(vignette, x, y)
# Make a new color from those values
newColor = getNewColorValues(inputPixel, vignettePixel)
# Assign this new color to the current pixel of the input image
setColor(px, newColor)
explore(canvas)
def getNewColorValues(inputPixel, vignettePixel):
inputRed = getRed(inputPixel)
vignetteRed = getRed(vignettePixel)
inputGreen = getGreen(inputPixel)
vignetteGreen = getGreen(vignettePixel)
inputBlue = getBlue(inputPixel)
vignetteBlue = getBlue(vignettePixel)
newR = inputRed - (255 % vignetteRed) / 3
newG = inputGreen - (255 % vignetteGreen) / 3
newB = inputBlue - (255 % vignetteBlue) / 3
newC = makeColor(newR, newG, newB)
return newC