将Bitmap对象输出成PNG文件 优化版
http://ftp2.66rpg.com/3/美术与技术/轮回者/TilesetMaker_Fx4.rar128m的机器2000*1000的图输出大约30s，
应该不会再出现“脚本已备份”了。
多谢66、金圭子和夏娜的提醒{/cy}
现在主要是get_pixel的效率问题……管不了，不管了。
#==============================================================================# 本脚本出自www.66rpg.com，转载请注明。#===============================================================================begin============================================================================== Bitmap to PNG By 轮回者============================================================================== 对Bitmap对象直接使用 bitmap_obj.make_png(name[, path]) name:保存文件名 path:保存路径 感谢66、夏娜、金圭子的提醒和帮助！ ===============================================================================endmodule Zlibclass Png_File < GzipWriter #-------------------------------------------------------------------------- # ● 主处理 #-------------------------------------------------------------------------- def make_png(bitmap_Fx,mode) @mode = mode @bitmap_Fx = bitmap_Fx self.write(make_header) self.write(make_ihdr) self.write(make_idat) self.write(make_iend) end #-------------------------------------------------------------------------- # ● PNG文件头数据块 #-------------------------------------------------------------------------- def make_header return .pack("C*") end #-------------------------------------------------------------------------- # ● PNG文件情报头数据块(IHDR) #-------------------------------------------------------------------------- def make_ihdr ih_size = .pack("N") ih_sign = "IHDR" ih_width = [@bitmap_Fx.width].pack("N") ih_height = [@bitmap_Fx.height].pack("N") ih_bit_depth = .pack("C") ih_color_type = .pack("C") ih_compression_method = .pack("C") ih_filter_method = .pack("C") ih_interlace_method = .pack("C") string = ih_sign + ih_width + ih_height + ih_bit_depth + ih_color_type + ih_compression_method + ih_filter_method + ih_interlace_method ih_crc = .pack("N") return ih_size + string + ih_crc end #-------------------------------------------------------------------------- # ● 生成图像数据(IDAT) #-------------------------------------------------------------------------- def make_idat header = "\x49\x44\x41\x54" case @mode # 请54~ when 1 data = make_bitmap_data#1 else data = make_bitmap_data end data = Zlib::Deflate.deflate(data, 8) crc = .pack("N") size = .pack("N") return size + header + data + crc end #-------------------------------------------------------------------------- # ● 从Bitmap对象中生成图像数据 mode 1(请54~) #-------------------------------------------------------------------------- def make_bitmap_data1 w = @bitmap_Fx.width h = @bitmap_Fx.height data = [] for y in 0...h data.push(0) for x in 0...w color = @bitmap_Fx.get_pixel(x, y) red = color.red green = color.green blue = color.blue alpha = color.alpha data.push(red) data.push(green) data.push(blue) data.push(alpha) end end return data.pack("C*") end #-------------------------------------------------------------------------- # ● 从Bitmap对象中生成图像数据 mode 0 #-------------------------------------------------------------------------- def make_bitmap_data gz = Zlib::GzipWriter.open('hoge.gz') t_Fx = 0 w = @bitmap_Fx.width h = @bitmap_Fx.height data = [] for y in 0...h data.push(0) for x in 0...w t_Fx += 1 if t_Fx % 10000 == 0 Graphics.update end if t_Fx % 100000 == 0 s = data.pack("C*") gz.write(s) data.clear #GC.start end color = @bitmap_Fx.get_pixel(x, y) red = color.red green = color.green blue = color.blue alpha = color.alpha data.push(red) data.push(green) data.push(blue) data.push(alpha) end end s = data.pack("C*") gz.write(s) gz.close data.clear gz = Zlib::GzipReader.open('hoge.gz') data = gz.read gz.close File.delete('hoge.gz') return data end #-------------------------------------------------------------------------- # ● PNG文件尾数据块(IEND) #-------------------------------------------------------------------------- def make_iend ie_size = .pack("N") ie_sign = "IEND" ie_crc = .pack("N") return ie_size + ie_sign + ie_crc endendend#==============================================================================# ■ Bitmap#------------------------------------------------------------------------------# 关联到Bitmap。#==============================================================================class Bitmap#--------------------------------------------------------------------------# ● 关联#-------------------------------------------------------------------------- def make_png(name="like", path="",mode=0) make_dir(path) if path != "" Zlib::Png_File.open("temp.gz") {|gz| gz.make_png(self,mode) } Zlib::GzipReader.open("temp.gz") {|gz| $read = gz.read } f = File.open(path + name + ".png","wb") f.write($read) f.close File.delete('temp.gz') end#--------------------------------------------------------------------------# ● 生成保存路径#-------------------------------------------------------------------------- def make_dir(path) dir = path.split("/") for i in 0...dir.size unless dir == "." add_dir = dir.join("/") begin Dir.mkdir(add_dir) rescue end end endendend#==============================================================================# 本脚本出自www.66rpg.com，转载请注明。#==============================================================================复制代码
[本贴由 雷欧纳德 于 2006-11-28 17:05:45 进行了编辑]
本帖来自P1论坛作者轮回者，因Project1站服务器在国外有时候访问缓慢不方便作者交流学习，经联系P1站长fux2同意署名转载一起分享游戏制作经验，共同为国内独立游戏作者共同创造良好交流环境，原文地址：https://rpg.blue/forum.php?mod=viewthread&tid=36728若有侵权，发帖作者可联系底部站长QQ在线咨询功能删除，谢谢。
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