PNG Archives - icodebroker

[C#/WPF] DrawingVisual 객체를 PNG 파일로 저장하기

■ DrawingVisual 객체를 PNG 파일로 저장하는 방법을 보여준다. ▶ MainWindow.xaml


<Window x:Class="TestProject.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="800"
    Height="600"
    Title="TestProject"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <Button Name="createImageFileButton"
        Width="150"
        Height="30"
        Content="이미지 파일 생성" />
</Window>

<Window x:Class="TestProject.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

Width="800"

Height="600"

Title="TestProject"

FontFamily="나눔고딕코딩"

FontSize="16">

<Button Name="createImageFileButton"

Width="150"

Height="30"

Content="이미지 파일 생성" />

</Window>

▶ MainWindow.xaml.cs


using System;
using System.Globalization;
using System.IO;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Imaging;

namespace TestProject
{
    /// <summary>
    /// 메인 윈도우
    /// </summary>
    public partial class MainWindow : Window
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainWindow()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainWindow()
        {
            InitializeComponent();

            this.createImageFileButton.Click += createImageFileButton_Click;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 이미지 파일 생성 버튼 클릭시 처리하기 - createImageFileButton_Click(sender, e)

        /// <summary>
        /// 이미지 파일 생성 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void createImageFileButton_Click(object sender, RoutedEventArgs e)
        {
            BitmapImage bitmapImage = new BitmapImage();

            bitmapImage.BeginInit();

            bitmapImage.UriSource = new Uri("IMAGE/waterlilies.jpg", UriKind.Relative);

            bitmapImage.DecodePixelWidth = 200;

            bitmapImage.EndInit();

            FormattedText formattedText = new FormattedText
            (
                "Waterlilies",
                new CultureInfo("en-us"),
                FlowDirection.LeftToRight,
                new Typeface(FontFamily, FontStyles.Normal, FontWeights.Normal, new FontStretch()),
                this.FontSize,
                Brushes.White
            );

            DrawingVisual drawingVisual = new DrawingVisual();

            DrawingContext drawingContext = drawingVisual.RenderOpen();

            drawingContext.DrawImage(bitmapImage, new Rect(0, 0, bitmapImage.Width, bitmapImage.Height));

            drawingContext.DrawText(formattedText, new Point(bitmapImage.Height / 2, 0));

            drawingContext.Close();

            RenderTargetBitmap renderTargetBitmap = new RenderTargetBitmap
            (
                bitmapImage.PixelWidth,
                bitmapImage.PixelHeight,
                96,
                96,
                PixelFormats.Pbgra32
            );

            renderTargetBitmap.Render(drawingVisual);

            PngBitmapEncoder encoder = new PngBitmapEncoder();

            encoder.Frames.Add(BitmapFrame.Create(renderTargetBitmap));

            using(FileStream stream = File.Create("target.png"))
            {
                encoder.Save(stream);
            }
        }

        #endregion
    }
}

using System;

using System.Globalization;

using System.IO;

using System.Windows;

using System.Windows.Media;

using System.Windows.Media.Imaging;

namespace TestProject

{

/// <summary>

/// 메인 윈도우

/// </summary>

public partial class MainWindow : Window

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 생성자 - MainWindow()

/// <summary>

/// 생성자

/// </summary>

public MainWindow()

{

InitializeComponent();

this.createImageFileButton.Click += createImageFileButton_Click;

}

#endregion

//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 이미지 파일 생성 버튼 클릭시 처리하기 - createImageFileButton_Click(sender, e)

/// <summary>

/// 이미지 파일 생성 버튼 클릭시 처리하기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private void createImageFileButton_Click(object sender, RoutedEventArgs e)

{

BitmapImage bitmapImage = new BitmapImage();

bitmapImage.BeginInit();

bitmapImage.UriSource = new Uri("IMAGE/waterlilies.jpg", UriKind.Relative);

bitmapImage.DecodePixelWidth = 200;

bitmapImage.EndInit();

FormattedText formattedText = new FormattedText

(

"Waterlilies",

new CultureInfo("en-us"),

FlowDirection.LeftToRight,

new Typeface(FontFamily, FontStyles.Normal, FontWeights.Normal, new FontStretch()),

this.FontSize,

Brushes.White

);

DrawingVisual drawingVisual = new DrawingVisual();

DrawingContext drawingContext = drawingVisual.RenderOpen();

drawingContext.DrawImage(bitmapImage, new Rect(0, 0, bitmapImage.Width, bitmapImage.Height));

drawingContext.DrawText(formattedText, new Point(bitmapImage.Height / 2, 0));

drawingContext.Close();

RenderTargetBitmap renderTargetBitmap = new RenderTargetBitmap

(

bitmapImage.PixelWidth,

bitmapImage.PixelHeight,

96,

PixelFormats.Pbgra32

);

renderTargetBitmap.Render(drawingVisual);

PngBitmapEncoder encoder = new PngBitmapEncoder();

encoder.Frames.Add(BitmapFrame.Create(renderTargetBitmap));

using(FileStream stream = File.Create("target.png"))

{

encoder.Save(stream);

}

#endregion

}

TestProject.zip

[C#/WPF] PngBitmapDecoder 클래스 : PNG 파일 로드하기

■ PngBitmapDecoder 클래스를 사용해 PNG 파일을 로드하는 방법을 보여준다. ▶ MainWindow.xaml


<Window x:Class="TestProject.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="800"
    Height="600"
    Title="TestProject"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <StackPanel Name="stackPanel"
        HorizontalAlignment="Center"
        VerticalAlignment="Center" />
</Window>

<Window x:Class="TestProject.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

Width="800"

Height="600"

Title="TestProject"

FontFamily="나눔고딕코딩"

FontSize="16">

<StackPanel Name="stackPanel"

HorizontalAlignment="Center"

VerticalAlignment="Center" />

</Window>

▶ MainWindow.xaml.cs


using System;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;

namespace TestProject
{
    /// <summary>
    /// 메인 윈도우
    /// </summary>
    public partial class MainWindow : Window
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainWindow()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainWindow()
        {
            InitializeComponent();

            FileStream imageStreamSource = new FileStream("IMAGE\\smiley.png", FileMode.Open, FileAccess.Read, FileShare.Read);

            PngBitmapDecoder decoder1 = new PngBitmapDecoder
            (
                imageStreamSource,
                BitmapCreateOptions.PreservePixelFormat,
                BitmapCacheOption.Default
            );

            BitmapSource bitmapSource1 = decoder1.Frames[0];

            Image image1 = new Image
            {
                Margin  = new Thickness(20),
                Stretch = Stretch.None,
                Source  = bitmapSource1
            };

            Uri uri = new Uri("IMAGE\\smiley.png", UriKind.RelativeOrAbsolute);

            PngBitmapDecoder decoder2 = new PngBitmapDecoder
            (
                uri,
                BitmapCreateOptions.PreservePixelFormat,
                BitmapCacheOption.Default
            );

            BitmapSource bitmapSource2 = decoder2.Frames[0];

            Image image2 = new Image
            {
                Margin  = new Thickness(20),
                Stretch = Stretch.None,
                Source  = bitmapSource2
            };

            this.stackPanel.Children.Add(image1);
            this.stackPanel.Children.Add(image2);
        }

        #endregion
    }
}

using System;

using System.IO;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Media;

using System.Windows.Media.Imaging;

namespace TestProject

{

/// <summary>

/// 메인 윈도우

/// </summary>

public partial class MainWindow : Window

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 생성자 - MainWindow()

/// <summary>

/// 생성자

/// </summary>

public MainWindow()

{

InitializeComponent();

FileStream imageStreamSource = new FileStream("IMAGE\\smiley.png", FileMode.Open, FileAccess.Read, FileShare.Read);

PngBitmapDecoder decoder1 = new PngBitmapDecoder

(

imageStreamSource,

BitmapCreateOptions.PreservePixelFormat,

BitmapCacheOption.Default

);

BitmapSource bitmapSource1 = decoder1.Frames[0];

Image image1 = new Image

{

Margin = new Thickness(20),

Stretch = Stretch.None,

Source = bitmapSource1

};

Uri uri = new Uri("IMAGE\\smiley.png", UriKind.RelativeOrAbsolute);

PngBitmapDecoder decoder2 = new PngBitmapDecoder

(

uri,

BitmapCreateOptions.PreservePixelFormat,

BitmapCacheOption.Default

);

BitmapSource bitmapSource2 = decoder2.Frames[0];

Image image2 = new Image

{

Margin = new Thickness(20),

Stretch = Stretch.None,

Source = bitmapSource2

};

this.stackPanel.Children.Add(image1);

this.stackPanel.Children.Add(image2);

}

#endregion

}

TestProject.zip

[C#/WPF] PngBitmapEncoder 클래스 : PNG 파일 생성하기

■ PngBitmapEncoder 클래스를 사용해 PNG 파일을 생성하는 방법을 보여준다. ▶ 예제 코드 (C#)


using System.IO;
using System.Windows.Media;
using System.Windows.Media.Imaging;

int    width          = 128;
int    height         = 128;
int    stride         = width;
byte[] pixelByteArray = new byte[width * stride];

BitmapPalette bitmapPalette = BitmapPalettes.Halftone256;

BitmapSource bitmapSource = BitmapSource.Create
(
    width,
    height,
    96,
    96,
    PixelFormats.Indexed8,
    bitmapPalette,
    pixelByteArray,
    stride
);

FileStream stream = new FileStream("target.png", FileMode.Create);

PngBitmapEncoder encoder = new PngBitmapEncoder();

encoder.Interlace = PngInterlaceOption.On;

encoder.Frames.Add(BitmapFrame.Create(bitmapSource));

encoder.Save(stream);

using System.IO;

using System.Windows.Media;

using System.Windows.Media.Imaging;

int width = 128;

int height = 128;

int stride = width;

byte[] pixelByteArray = new byte[width * stride];

BitmapPalette bitmapPalette = BitmapPalettes.Halftone256;

BitmapSource bitmapSource = BitmapSource.Create

(

width,

height,

96,

PixelFormats.Indexed8,

bitmapPalette,

pixelByteArray,

stride

);

FileStream stream = new FileStream("target.png", FileMode.Create);

PngBitmapEncoder encoder = new PngBitmapEncoder();

encoder.Interlace = PngInterlaceOption.On;

encoder.Frames.Add(BitmapFrame.Create(bitmapSource));

encoder.Save(stream);

[PYTHON/PILLOW] PNG 파일을 SVG 파일로 변환하기

■ PNG 파일을 SVG 파일로 변환하는 방법을 보여준다. ▶ main.py


import sys
import operator
import logging
import collections
import io
import optparse
from PIL import Image

################################################################################
# 공통
################################################################################

def AddTuple(tuple1, tuple2):
    return tuple(map(operator.add, tuple1, tuple2))

def SubtractTuple(tuple1, tuple2):
    return tuple(map(operator.sub, tuple1, tuple2))

def NegateTuple(tuple1):
    return tuple(map(operator.neg, tuple1))

def CalculateDirection(edgeTupleTuple):
    return SubtractTuple(edgeTupleTuple[1], edgeTupleTuple[0])

def CalculateMagnitude(a):
    return int(pow(pow(a[0], 2) + pow(a[1], 2), .5))

def Normalize(tuple1):
    magnitude = CalculateMagnitude(tuple1)
    assert magnitude > 0, "Cannot normalize a zero-length vector"
    return tuple(map(operator.truediv, tuple1, [magnitude] * len(tuple1)))

def GetSVGHeader(width, height):
    return """<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg width="%d" height="%d" xmlns="http://www.w3.org/2000/svg" version="1.1">
""" % (width, height)

################################################################################
# SVG 데이터 구하기 1
################################################################################

def GetJoinedEdgeList(assortedEdgeDictionary, keepEveryPoint = False):
    pieceListList  = []
    pieceList      = []
    directionDeque = collections.deque([(0, 1), (1, 0), (0, -1), (-1, 0)])

    while assortedEdgeDictionary:
        if not pieceList:
            pieceList.append(assortedEdgeDictionary.pop())

        currentDirectionTuple = Normalize(CalculateDirection(pieceList[-1]))

        while currentDirectionTuple != directionDeque[2]:
            directionDeque.rotate()

        for i in range(1, 4):
            nextEndTuple = AddTuple(pieceList[-1][1], directionDeque[i])

            nextEdgeTuple = (pieceList[-1][1], nextEndTuple)

            if nextEdgeTuple in assortedEdgeDictionary:
                assortedEdgeDictionary.remove(nextEdgeTuple)

                if i == 2 and not keepEveryPoint:
                    pieceList[-1] = (pieceList[-1][0], nextEdgeTuple[1])
                else:
                    pieceList.append(nextEdgeTuple)

                if pieceList[0][0] == pieceList[-1][1]:
                    if not keepEveryPoint and Normalize(CalculateDirection(pieceList[0])) == Normalize(CalculateDirection(pieceList[-1])):
                        pieceList[-1] = (pieceList[-1][0], pieceList.pop(0)[1])
                    pieceListList.append(pieceList)
                    pieceList = []
                break
        else:
            raise Exception("Failed to find connecting edge")

    return pieceListList

def GetSVGData1(image, opaque = None, keepEveryPoint = False):
    adjacentOffsetTuple = ((1, 0), (0, 1), (-1, 0), (0, -1))

    visitedImage = Image.new("1", image.size, 0)

    colorTupleDictionary = {}

    width, height = image.size

    for x in range(width):
        for y in range(height):
            pointTuple = (x, y)

            if visitedImage.getpixel(pointTuple):
                continue

            colorTuple = image.getpixel((x, y))

            if opaque and not colorTuple[3]:
                continue

            pieceList = []

            queueList = [pointTuple]

            visitedImage.putpixel(pointTuple, 1)

            while queueList:
                pointTuple = queueList.pop()

                for offsetTuple in adjacentOffsetTuple:
                    neighbourPointTuple = AddTuple(pointTuple, offsetTuple)

                    if not (0 <= neighbourPointTuple[0] < width) or not (0 <= neighbourPointTuple[1] < height):
                        continue

                    if visitedImage.getpixel(neighbourPointTuple):
                        continue

                    neighbourPointColorTuple = image.getpixel(neighbourPointTuple)

                    if neighbourPointColorTuple != colorTuple:
                        continue

                    queueList.append(neighbourPointTuple)

                    visitedImage.putpixel(neighbourPointTuple, 1)

                pieceList.append(pointTuple)

            if not colorTuple in colorTupleDictionary:
                colorTupleDictionary[colorTuple] = []

            colorTupleDictionary[colorTuple].append(pieceList)

    del adjacentOffsetTuple
    del visitedImage

    edgeDictionray = \
    {
        (-1,  0) : ((0, 0), (0, 1)),
        ( 0,  1) : ((0, 1), (1, 1)),
        ( 1,  0) : ((1, 1), (1, 0)),
        ( 0, -1) : ((1, 0), (0, 0))
    }

    colorEdgeDictionary = {}

    for colorTuple, pieceList in colorTupleDictionary.items():
        for piecePixelList in pieceList:
            edgeSet = set([])
            for coordinateTuple in piecePixelList:
                for offsetTuple, (startOffsetTuple, endOffsetTuple) in edgeDictionray.items():
                    neighbourPointTuple = AddTuple(coordinateTuple, offsetTuple     )
                    startTuple          = AddTuple(coordinateTuple, startOffsetTuple)
                    endTuple            = AddTuple(coordinateTuple, endOffsetTuple  )

                    edgeTuple = (startTuple, endTuple)

                    if neighbourPointTuple in piecePixelList:
                        continue

                    edgeSet.add(edgeTuple)

            if not colorTuple in colorEdgeDictionary:
                colorEdgeDictionary[colorTuple] = []

            colorEdgeDictionary[colorTuple].append(edgeSet)

    del colorTupleDictionary
    del edgeDictionray

    colorJoinedPieceDictionary = {}

    for colorTuple, pieceList in colorEdgeDictionary.items():
        colorJoinedPieceDictionary[colorTuple] = []
        for assortedEdgeDictionary in pieceList:
            colorJoinedPieceDictionary[colorTuple].append(GetJoinedEdgeList(assortedEdgeDictionary, keepEveryPoint))

    stringIO = io.StringIO()

    stringIO.write(GetSVGHeader(*image.size))

    for colorTuple, shapeList in colorJoinedPieceDictionary.items():
        for shape in shapeList:
            stringIO.write(""" <path d=" """)
            for subsidaryShape in shape:
                pointTuple = subsidaryShape.pop(0)[0]
                stringIO.write(""" M %d,%d """ % pointTuple)
                for edgeTuple in subsidaryShape:
                    pointTuple = edgeTuple[0]
                    stringIO.write(""" L %d,%d """ % pointTuple)
                stringIO.write(""" Z """)
            stringIO.write(""" " style="fill:rgb%s; fill-opacity:%.3f; stroke:none;" />\n""" % (colorTuple[0:3], float(colorTuple[3]) / 255))

    stringIO.write("""</svg>\n""")

    return stringIO.getvalue()

################################################################################
# SVG 데이터 구하기 2
################################################################################

def GetSVGData2(image, opaque = None):
    stringIO = io.StringIO()

    stringIO.write(GetSVGHeader(*image.size))

    width, height = image.size

    for x in range(width):
        for y in range(height):
            pointTuple = (x, y)

            colorTuple = image.getpixel(pointTuple)

            if opaque and not colorTuple[3]:
                continue

            stringIO.write("""  <rect x="%d" y="%d" width="1" height="1" style="fill:rgb%s; fill-opacity:%.3f; stroke:none;" />\n"""\
                % (x, y, colorTuple[0:3], float(colorTuple[3]) / 255))

    stringIO.write("""</svg>\n""")

    return stringIO.getvalue()

################################################################################
# SVG 파일 생성하기
################################################################################

def CreateSVGFile(pngFilePath, contiguous = None, opaque = None, keepEveryPoint = None):
    try:
        pngImageFile = Image.open(pngFilePath)
    except IOError:
        print("이미지 파일을 열 수가 없습니다 : %s\n" % pngFilePath)
        sys.exit(1)

    image = pngImageFile.convert("RGBA")

    if contiguous:
        return GetSVGData1(image, opaque, keepEveryPoint)
    else:
        return GetSVGData2(image, opaque)

################################################################################
# 프로그램 시작하기
################################################################################

logging.basicConfig()

log = logging.getLogger('png2svg')

if __name__ == "__main__":
    parser = optparse.OptionParser()

    parser.add_option(\
        "-v",
        "--verbose",
        action = "store_true",
        dest = "verbosity",
        help = "Print verbose information for debugging",
        default = None)
    parser.add_option(\
        "-q",
        "--quiet",
        action = "store_false",
        dest = "verbosity",
        help = "Suppress warnings",
        default = None)
    parser.add_option(\
        "-p",
        "--pixels",
        action = "store_false",
        dest = "contiguous",
        help = "Generate a separate shape for each pixel; do not group pixels into contiguous areas of the same colour",
        default = True)
    parser.add_option(\
        "-o",
        "--opaque",
        action = "store_true",
        dest = "opaque",
        help = "Opaque only; do not create shapes for fully transparent pixels.",
        default = None)
    parser.add_option(\
        "-1",
        "--one",
        action = "store_true",
        dest = "keeEveryPoint",
        help = "1-pixel-width edges on contiguous shapes; default is to remove intermediate points on straight line edges.",
        default = None)

    (options, argumentList) = parser.parse_args()

    if options.verbosity == True:
        log.setLevel(logging.DEBUG)
    elif options.verbosity == False:
        log.setLevel(logging.ERROR)

    print(CreateSVGFile(argumentList[0], contiguous = options.contiguous, opaque = options.opaque, keepEveryPoint = options.keeEveryPoint))

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import sys

import operator

import logging

import collections

import io

import optparse

from PIL import Image

################################################################################

# 공통

################################################################################

def AddTuple(tuple1, tuple2):

return tuple(map(operator.add, tuple1, tuple2))

def SubtractTuple(tuple1, tuple2):

return tuple(map(operator.sub, tuple1, tuple2))

def NegateTuple(tuple1):

return tuple(map(operator.neg, tuple1))

def CalculateDirection(edgeTupleTuple):

return SubtractTuple(edgeTupleTuple[1], edgeTupleTuple[0])

def CalculateMagnitude(a):

return int(pow(pow(a[0], 2) + pow(a[1], 2), .5))

def Normalize(tuple1):

magnitude = CalculateMagnitude(tuple1)

assert magnitude > 0, "Cannot normalize a zero-length vector"

return tuple(map(operator.truediv, tuple1, [magnitude] * len(tuple1)))

def GetSVGHeader(width, height):

return """<?xml version="1.0" encoding="UTF-8" standalone="no"?>

<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

""" % (width, height)

################################################################################

# SVG 데이터 구하기 1

################################################################################

def GetJoinedEdgeList(assortedEdgeDictionary, keepEveryPoint = False):

pieceListList = []

pieceList = []

directionDeque = collections.deque([(0, 1), (1, 0), (0, -1), (-1, 0)])

while assortedEdgeDictionary:

if not pieceList:

pieceList.append(assortedEdgeDictionary.pop())

currentDirectionTuple = Normalize(CalculateDirection(pieceList[-1]))

while currentDirectionTuple != directionDeque[2]:

directionDeque.rotate()

for i in range(1, 4):

nextEndTuple = AddTuple(pieceList[-1][1], directionDeque[i])

nextEdgeTuple = (pieceList[-1][1], nextEndTuple)

if nextEdgeTuple in assortedEdgeDictionary:

assortedEdgeDictionary.remove(nextEdgeTuple)

if i == 2 and not keepEveryPoint:

pieceList[-1] = (pieceList[-1][0], nextEdgeTuple[1])

else:

pieceList.append(nextEdgeTuple)

if pieceList[0][0] == pieceList[-1][1]:

if not keepEveryPoint and Normalize(CalculateDirection(pieceList[0])) == Normalize(CalculateDirection(pieceList[-1])):

pieceList[-1] = (pieceList[-1][0], pieceList.pop(0)[1])

pieceListList.append(pieceList)

pieceList = []

break

else:

raise Exception("Failed to find connecting edge")

return pieceListList

def GetSVGData1(image, opaque = None, keepEveryPoint = False):

adjacentOffsetTuple = ((1, 0), (0, 1), (-1, 0), (0, -1))

visitedImage = Image.new("1", image.size, 0)

colorTupleDictionary = {}

width, height = image.size

for x in range(width):

for y in range(height):

pointTuple = (x, y)

if visitedImage.getpixel(pointTuple):

continue

colorTuple = image.getpixel((x, y))

if opaque and not colorTuple[3]:

continue

pieceList = []

queueList = [pointTuple]

visitedImage.putpixel(pointTuple, 1)

while queueList:

pointTuple = queueList.pop()

for offsetTuple in adjacentOffsetTuple:

neighbourPointTuple = AddTuple(pointTuple, offsetTuple)

if not (0 <= neighbourPointTuple[0] < width) or not (0 <= neighbourPointTuple[1] < height):

continue

if visitedImage.getpixel(neighbourPointTuple):

continue

neighbourPointColorTuple = image.getpixel(neighbourPointTuple)

if neighbourPointColorTuple != colorTuple:

continue

queueList.append(neighbourPointTuple)

visitedImage.putpixel(neighbourPointTuple, 1)

pieceList.append(pointTuple)

if not colorTuple in colorTupleDictionary:

colorTupleDictionary[colorTuple] = []

colorTupleDictionary[colorTuple].append(pieceList)

del adjacentOffsetTuple

del visitedImage

edgeDictionray = \

{

(-1, 0) : ((0, 0), (0, 1)),

( 0, 1) : ((0, 1), (1, 1)),

( 1, 0) : ((1, 1), (1, 0)),

( 0, -1) : ((1, 0), (0, 0))

}

colorEdgeDictionary = {}

for colorTuple, pieceList in colorTupleDictionary.items():

for piecePixelList in pieceList:

edgeSet = set([])

for coordinateTuple in piecePixelList:

for offsetTuple, (startOffsetTuple, endOffsetTuple) in edgeDictionray.items():

neighbourPointTuple = AddTuple(coordinateTuple, offsetTuple )

startTuple = AddTuple(coordinateTuple, startOffsetTuple)

endTuple = AddTuple(coordinateTuple, endOffsetTuple )

edgeTuple = (startTuple, endTuple)

if neighbourPointTuple in piecePixelList:

continue

edgeSet.add(edgeTuple)

if not colorTuple in colorEdgeDictionary:

colorEdgeDictionary[colorTuple] = []

colorEdgeDictionary[colorTuple].append(edgeSet)

del colorTupleDictionary

del edgeDictionray

colorJoinedPieceDictionary = {}

for colorTuple, pieceList in colorEdgeDictionary.items():

colorJoinedPieceDictionary[colorTuple] = []

for assortedEdgeDictionary in pieceList:

colorJoinedPieceDictionary[colorTuple].append(GetJoinedEdgeList(assortedEdgeDictionary, keepEveryPoint))

stringIO = io.StringIO()

stringIO.write(GetSVGHeader(*image.size))

for colorTuple, shapeList in colorJoinedPieceDictionary.items():

for shape in shapeList:

stringIO.write(""" <path d=" """)

for subsidaryShape in shape:

pointTuple = subsidaryShape.pop(0)[0]

stringIO.write(""" M %d,%d """ % pointTuple)

for edgeTuple in subsidaryShape:

pointTuple = edgeTuple[0]

stringIO.write(""" L %d,%d """ % pointTuple)

stringIO.write(""" Z """)

stringIO.write(""" " style="fill:rgb%s; fill-opacity:%.3f; stroke:none;" />\n""" % (colorTuple[0:3], float(colorTuple[3]) / 255))

stringIO.write("""</svg>\n""")

return stringIO.getvalue()

################################################################################

# SVG 데이터 구하기 2

################################################################################

def GetSVGData2(image, opaque = None):

stringIO = io.StringIO()

stringIO.write(GetSVGHeader(*image.size))

width, height = image.size

for x in range(width):

for y in range(height):

pointTuple = (x, y)

colorTuple = image.getpixel(pointTuple)

if opaque and not colorTuple[3]:

continue

stringIO.write(""" <rect x="%d" y="%d" width="1" height="1" style="fill:rgb%s; fill-opacity:%.3f; stroke:none;" />\n"""\

% (x, y, colorTuple[0:3], float(colorTuple[3]) / 255))

stringIO.write("""</svg>\n""")

return stringIO.getvalue()

################################################################################

# SVG 파일 생성하기

################################################################################

def CreateSVGFile(pngFilePath, contiguous = None, opaque = None, keepEveryPoint = None):

try:

pngImageFile = Image.open(pngFilePath)

except IOError:

print("이미지 파일을 열 수가 없습니다 : %s\n" % pngFilePath)

sys.exit(1)

image = pngImageFile.convert("RGBA")

if contiguous:

return GetSVGData1(image, opaque, keepEveryPoint)

else:

return GetSVGData2(image, opaque)

################################################################################

# 프로그램 시작하기

################################################################################

logging.basicConfig()

log = logging.getLogger('png2svg')

if __name__ == "__main__":

parser = optparse.OptionParser()

parser.add_option(\

"-v",

"--verbose",

action = "store_true",

dest = "verbosity",

help = "Print verbose information for debugging",

default = None)

parser.add_option(\

"-q",

"--quiet",

action = "store_false",

dest = "verbosity",

help = "Suppress warnings",

default = None)

parser.add_option(\

"-p",

"--pixels",

action = "store_false",

dest = "contiguous",

help = "Generate a separate shape for each pixel; do not group pixels into contiguous areas of the same colour",

default = True)

parser.add_option(\

"-o",

"--opaque",

action = "store_true",

dest = "opaque",

help = "Opaque only; do not create shapes for fully transparent pixels.",

default = None)

parser.add_option(\

"-1",

"--one",

action = "store_true",

dest = "keeEveryPoint",

help = "1-pixel-width edges on contiguous shapes; default is to remove intermediate points on straight line edges.",

default = None)

(options, argumentList) = parser.parse_args()

if options.verbosity == True:

log.setLevel(logging.DEBUG)

elif options.verbosity == False:

log.setLevel(logging.ERROR)

print(CreateSVGFile(argumentList[0], contiguous = options.contiguous, opaque = options.opaque, keepEveryPoint = options.keeEveryPoint))

※ 명령 프롬프트에서 env 가상 환경을 활성화하고 아래와 같이 실행하거나 ▶