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require "tempfile"class Gif def self.convert_jpg_to_gif(arr) if arr.length == 1 a = "#{Rails.root}/public/gif/1.jpeg" b = "#{Rails.root}/public/gif/2.jpeg" c = arr[0] d = "#{Rails.root}/public/gif/4.jpeg" elsif arr.length == 2 a = arr[0] b = "#{Rails.root}/public/gif/2.jpeg" c = arr[1] d = "#{Rails.root}/public/gif/4.jpeg" elsif arr.length == 3 a = arr[0] b = arr[1] c = arr[-1] d = "#{Rails.root}/public/gif/4.jpeg" elsif arr.length == 4 a = arr[0] b = arr[1] c = arr[-1] d = arr[2] end system("convert #{b} -background 'rgba(0,0,0,0.0)' -rotate \"-20\" #{Rails.root}/public/gif/22.gif") system("convert #{d} -background 'rgba(0,0,0,0.0)' -rotate \"-20\" #{Rails.root}/public/gif/41.gif") system("composite -gravity NorthEast -geometry 18x18+102+32 #{a} #{Rails.root}/public/gif/1231.gif #{Rails.root}/public/gif/a.gif ") system("composite -gravity SouthWest -geometry 22x22+15+48 #{Rails.root}/public/gif/22.gif #{Rails.root}/public/gif/a.gif #{Rails.root}/public/gif/a.gif") system("composite -gravity SouthEast -geometry 26x26+86+26 #{c} #{Rails.root}/public/gif/a.gif #{Rails.root}/public/gif/a.gif ") #71X26 system("composite -gravity SouthEast -geometry 16x16+24+81 #{Rails.root}/public/gif/41.gif #{Rails.root}/public/gif/a.gif #{Rails.root}/public/gif/b1.gif ") system("convert #{b} -background 'rgba(0,0,0,0.0)' -rotate \"+20\" #{Rails.root}/public/gif/22.gif") system("composite -gravity NorthEast -geometry 18x18+102+32 #{a} #{Rails.root}/public/gif/1232.gif #{Rails.root}/public/gif/a1.gif ") system("composite -gravity SouthWest -geometry 22x22+19+49 #{Rails.root}/public/gif/22.gif #{Rails.root}/public/gif/a1.gif #{Rails.root}/public/gif/a1.gif ") system("composite -gravity SouthWest -geometry 26x26+71+26 #{c} #{Rails.root}/public/gif/a1.gif #{Rails.root}/public/gif/a1.gif ") #71X26 system("composite -gravity SouthEast -geometry 16x16+24+81 #{Rails.root}/public/gif/41.gif #{Rails.root}/public/gif/a1.gif #{Rails.root}/public/gif/b2.gif ") system("convert -delay 100 -dispose Background #{Rails.root}/public/gif/b1.gif #{Rails.root}/public/gif/b2.gif -loop 0 #{Rails.root}/public/gif/b3.gif") "#{Rails.root}/public/gif/b3.gif" endend
require "tempfile"class Gif def self.convert_jpg_to_gif(arr, work_image_path) if arr.length == 1 a = "#{Rails.root}/public/gif/1.jpeg" b = "#{Rails.root}/public/gif/2.jpeg" c = arr[0] d = "#{Rails.root}/public/gif/4.jpeg" elsif arr.length == 2 a = arr[0] b = "#{Rails.root}/public/gif/2.jpeg" c = arr[1] d = "#{Rails.root}/public/gif/4.jpeg" elsif arr.length == 3 a = arr[0] b = arr[1] c = arr[-1] d = "#{Rails.root}/public/gif/4.jpeg" elsif arr.length == 4 a = arr[0] b = arr[1] c = arr[-1] d = arr[2] end t11 = Tempfile.new(["t11",".png"], "#{Rails.root}/public/temp") #temofile中：.png指定格式后可以生成背景透明的图片 system("convert #{a} -background 'rgba(0,0,0,0.0)' -rotate \"6\" #{t11.path}") t21 = Tempfile.new(["t21",".png"], "#{Rails.root}/public/temp") system("convert #{b} -background 'rgba(0,0,0,0.0)' -rotate \"-18\" #{t21.path}") t31 = Tempfile.new(["t31",".png"], "#{Rails.root}/public/temp") system("convert #{c} -background 'rgba(0,0,0,0.0)' -rotate \"7\" #{t31.path}") t41 = Tempfile.new(["t41",".png"], "#{Rails.root}/public/temp") system("convert #{d} -background 'rgba(0,0,0,0.0)' -rotate \"11\" #{t41.path}") ta1 = Tempfile.new(["ta1",".png"], "#{Rails.root}/public/temp") tb1 = Tempfile.new(["tb1",".png"], "#{Rails.root}/public/temp") system("composite -gravity NorthEast -geometry 44x44+93+25 #{t11.path} #{Rails.root}/public/gif/b3.png #{ta1.path}") system("composite -gravity SouthWest -geometry 53x53+16+39 #{t21.path} #{ta1.path} #{ta1.path}") system("composite -gravity SouthEast -geometry 54x54+91+44 #{t31.path} #{ta1.path} #{ta1.path} ") system("composite -gravity SouthEast -geometry 44x44+25+92 #{t41.path} #{ta1.path} #{tb1.path} ") system("convert #{a} -background 'rgba(0,0,0,0.0)' -rotate \"-14\" #{t11.path}") system("convert #{b} -background 'rgba(0,0,0,0.0)' -rotate \"+10\" #{t21.path}") system("convert #{c} -background 'rgba(0,0,0,0.0)' -rotate \"-11\" #{t31.path}") system("convert #{d} -background 'rgba(0,0,0,0.0)' -rotate \"-15\" #{t41.path}") ta2 = Tempfile.new(["ta2",".png"], "#{Rails.root}/public/temp") tb2 = Tempfile.new(["tb2",".png"], "#{Rails.root}/public/temp") system("composite -gravity NorthEast -geometry 48x48+93+22 #{t11.path} #{Rails.root}/public/gif/b2.png #{ta2.path}") system("composite -gravity SouthWest -geometry 48x48+22+38 #{t21.path} #{ta2.path} #{ta2.path}") system("composite -gravity SouthWest -geometry 55x55+125+41 #{t31.path} #{ta2.path} #{ta2.path} ") system("composite -gravity SouthEast -geometry 47x47+23+91 #{t41.path} #{ta2.path} #{tb2.path} ") system("convert #{a} -background 'rgba(0,0,0,0.0)' -rotate \"+16\" #{t11.path}") system("convert #{b} -background 'rgba(0,0,0,0.0)' -rotate \"+3\" #{t21.path}") system("convert #{c} -background 'rgba(0,0,0,0.0)' -rotate \"-11\" #{t31.path}") system("convert #{d} -background 'rgba(0,0,0,0.0)' -rotate \"+11\" #{t41.path}") ta3 = Tempfile.new(["ta3",".png"], "#{Rails.root}/public/temp") tb3 = Tempfile.new(["tb3",".png"], "#{Rails.root}/public/temp") system("composite -gravity NorthEast -geometry 50x50+89+20 #{t11.path} #{Rails.root}/public/gif/b1.png #{ta3.path} ") system("composite -gravity SouthWest -geometry 44x44+24+40 #{t21.path} #{ta3.path} #{ta3.path} ") system("composite -gravity SouthWest -geometry 55x55+98+41 #{t31.path} #{ta3.path} #{ta3.path} ") system("composite -gravity SouthEast -geometry 45x45+20+91 #{t41.path} #{ta3.path} #{tb3.path} ") path = work_image_path.gsub(/\d+\.jpg/, "#{Time.now.to_i}.gif") result = File.new(path, 'w') tb4 = Tempfile.new(["tb4",".gif"], "#{Rails.root}/public/temp") #此处必须声明.gif后缀负责converet将会报错，命令不是别temp文件 system("convert -delay 100 -dispose Background #{tb1.path} #{tb2.path} #{tb3.path} -loop 0 #{tb4.path}") system("convert -dispose none -delay 0 #{work_image_path} -dispose previous -delay 100 #{tb4.path} -loop 0 #{path}") [t11,t21,t31,t41, ta1, tb1, ta2, ta3,tb2,tb3, tb4].each do |tempfile| tempfile.delete end path endend* 不加.png 和.gif在服务器上运行没有错误，也生成了想要的图片，为什么clone下来后就不行了呢？和tempfile类相关还是和converet中gif这个带帧的格式相关呢？?人生没有彩排，每天都是现场直播。
