原文來自 BITCA.CN 的【關于低分辨率像素游戲下顯示非防鋸齒中文 / 漢字的研究】文章

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# -*- coding: UTF-8 -*-

#coding=utf-8

import pygame # Pygame 游戲模塊

from pygame import freetype # 處理矢量字庫的 Pygame 模塊

import codecs # 處理 unicode 所需模塊

import json # 輸出 json 格式 所需模塊

# 保存的文件名稱

saveImgFileName = "pixel-hz.png"

saveCharsetFileName = "charset.txt"

saveFntFileName = "pix-font.fnt"

saveConstructFileName = "construct-spriteFont-spaceData.json"

# 等寬部分的字符表

fixWCharset = codecs.open("chinese-words.txt", "r", "UTF-8").read() # 讀取3500個常用漢字的表

fixWCharset = fixWCharset + u"哦罹" # 加入常用字中沒有的字

# 需要記錄寬度信息的字符表

varWCharset = codecs.open("ascii.txt", "r", "UTF-8").read() # 加入常用的 ascii 字符 表

varWCharset = varWCharset + u"，。；“”、：？《》" # 加入拳腳的漢字標點

gridW = 14 # 每個字符輸出區域的寬度

gridH = 14 # 每個字符輸出區域的高度

outColNum = 90 # 每行輸出的字符數

outRowNum = 42 # 一共輸出的行數

textureW = gridW * outColNum # 最終輸出的貼圖寬度

textureH = gridH * outRowNum # 最終輸出的貼圖高度

pygame.init() # 初始化游戲引擎

pygame.display.set_caption("像素點陣漢字生成") # 窗口的標題

screen = pygame.display.set_mode((textureW, textureH)) # 打開的窗口大小

buffer = pygame.Surface((textureW, textureH), pygame.SRCALPHA) # 建立一個透明貼圖大小的緩沖區，貼圖先

# 因為非等寬字體還要需要處理基線的問題，所以同一個字體載入到兩個變量之中，可以進行不同的設置

fixWFont = pygame.freetype.Font('wqy-bitmapsong/wenquanyi_9pt.pcf') # 等寬字符所用字體

varWFont = pygame.freetype.Font('wqy-bitmapsong/wenquanyi_9pt.pcf') # 非等寬字體所用字體

# 關掉防鋸齒

fixWFont.antialiased = False

varWFont.antialiased = False

varWFont.origin = True # 使用基線方式渲染字體

varWFontSize = 12 # 非等寬字體的固定輸出為 12 像素

baseLine = 10 # 設定從頂部往下 10 個像素為基線

x = 0 # 字符輸出的行坐標

y = 0 # 字符輸出的列坐標

fontColor = ( 255,255,255 ) # 字體顏色

outlineColor = ( 0,0,0 ) # 描邊顏色

charList = {} # 記錄所有字符的字典

def addCharObj(code, x, y, xadvance):

charList[code] = {

"x": x,

"y": y,

"xadvance": xadvance

}

for i in range( 0, len(fixWCharset) ): # 遍歷常用漢字表

fx = x * gridW # 字符輸出的像素坐標 x

fy = y * gridH # 字符輸出的像素坐標 y

char = fixWCharset[i]

# 渲染字符描邊

fixWFont.render_to( buffer, (fx+1, fy+0), char, outlineColor )

fixWFont.render_to( buffer, (fx+1, fy+2), char, outlineColor )

fixWFont.render_to( buffer, (fx+0, fy+1), char, outlineColor )

fixWFont.render_to( buffer, (fx+2, fy+1), char, outlineColor )

# 渲染字符

fixWFont.render_to( buffer, (fx+1, fy+1), char, fontColor )

# 行列遞增

x = x + 1

if (x>=outColNum):

x = 0

y = y + 1

addCharObj(ord(char), fx, fy, gridW)

widthDict = {} # 記錄寬度的字典

for enIndex in range(0, len(varWCharset)):

fx = x * gridW # 字符輸出的像素坐標 x

fy = y * gridH # 字符輸出的像素坐標 y

char = varWCharset[enIndex]

# 渲染字符描邊

varWFont.render_to( buffer, (fx+1, baseLine+fy+0), char, outlineColor, size=varWFontSize )

varWFont.render_to( buffer, (fx+0, baseLine+fy+1), char, outlineColor, size=varWFontSize )

varWFont.render_to( buffer, (fx+2, baseLine+fy+1), char, outlineColor, size=varWFontSize )

varWFont.render_to( buffer, (fx+1, baseLine+fy+2), char, outlineColor, size=varWFontSize )

# 渲染字符

varWFont.render_to( buffer, (fx+1, baseLine + fy+1), char, fontColor, size=varWFontSize )

# 記錄字符寬度

m = varWFont.get_metrics( char, size=varWFontSize )

lineX = fx + m[0][1]

charW = m[0][1] + 3

if not charW in widthDict : widthDict[charW] = []

widthDict[charW].append( char )

# 行列遞增

x = x + 1

if ( x >= outColNum ):

x = 0

y = y + 1

addCharObj(ord(char), fx, fy, charW)

# 輸出 construct 3 所需的寬度 json 文件

outputList = []

for wKey in widthDict:

charStr = ""

for char in widthDict[wKey] : charStr = charStr + char

outputList.append( [wKey,charStr] )

outJson = json.dumps( outputList )

print( "Json String For Construct : " )

print( outJson )

file = open( saveConstructFileName, "w" )

file.write( outJson )

file.close()

print( "Construct saved to : " + saveConstructFileName )

# 輸出 fnt 文件

outputList = ""

for code in charList:

charStr = ""

info = charList[code]

# for char in charList[code] : charStr = charStr + char

header = 'info face={face} size={size} bold={bold} italic={italic} charset={charset} unicode={unicode} stretchH={stretchH} smooth={smooth} aa={aa} padding={padding} spacing={spacing} outline={outline}\ncommon lineHeight={lineHeight} base={base} scaleW={scaleW} scaleH={scaleH} pages={pages} packed=0\npage id=0 file="{file}"\nchars count={count}\n'.format(

face="pixfont",

size=14,

bold=0,

italic=0,

charset="",

unicode="",

stretchH=100,

smooth=0,

aa=0,

padding="0,0,0,0",

spacing="0,0",

outline=0,

lineHeight=14,

base=baseLine,

scaleW=textureW,

scaleH=textureH,

pages=1,

file=saveImgFileName,

count=len(charList),

)

outputList += "char id={0} x={1} y={2} width={3} height={4} xoffset={5} yoffset={6} xadvance={7} page={8} chnl={9}\n".format(

code, info["x"], info["y"], gridW, gridH, 0, 0, info["xadvance"], 0, 15

)

outJson = header + outputList#json.dumps( outputList )

print( "Json String For fnt : " )

print( outJson )

file = open( saveFntFileName, "w" )

file.write( outJson )

file.close()

print( "fnt saved to : " + saveFntFileName )

# 輸出整體字符集文件

charset = fixWCharset + varWCharset

file = codecs.open( saveCharsetFileName, "w", "utf-8" )

file.write( charset )

file.close()

print( "charset saved to : " + saveCharsetFileName )

# 保存貼圖文件

pygame.image.save( buffer, saveImgFileName )

print( "texture saved to : " + saveImgFileName )

# 主循環

running = True

while running:

# 在窗口中顯示貼圖

screen.blit( buffer, (0, 0) )

pygame.display.update()

for event in pygame.event.get():

if event.type == pygame.QUIT:

running = False

總結

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