GMU:Bots 'n' Plots/Apasri Titatarn: Difference between revisions

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Revision as of 22:14, 16 June 2015

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 if __name__ == '__main__':
      makekaleido()
+</pre>
+I also made the gif version of Kaleidoscope by make 35 different images each turning 10 degree of the source image.
+Source image : illustration from Oliver Jeffers
+This is the code of Gif Version
+======Kaleidoscope 360 GIF ========
+<pre style="font-size:normal" >
+from PIL import Image, ImageDraw,ImageFilter
+import PIL.ImageOps as im
+import numpy as np
+import moviepy.editor as mpy
+def onepic():
+    global output
+	#creat mask base the same size with source image
+    mask = Image.new('RGBA', base.size, (255,255,255,0))
+    x, y = base.size
+    print("base size: %sx%s"%(x,y))
+# one variable to vary the size of triangle
+    var = y/28
+# Define triangle mask position (triangle with 20 degree)
+    (originx,originy) = (int(0.4*x),int(y))
+    trih = int(12*var)  #fix formular for triangle height
+    triw = int(4.2*var) #fix formular for triangle width
+    polygonpos = [(originx,originy),
+    (originx+triw,originy),
+    (originx+triw/2,originy-trih)]
+    print(trih,triw)
+# Create mask
+    draw = ImageDraw.Draw(mask,'RGBA')
+    draw.polygon(polygonpos,(0,0,0,255))
+    del draw
+    mask.save("mask.png")
+# Get the Alpha band from the template
+    tmplt = Image.open('mask.png')
+    A = tmplt.split()[3]
+#make one piece of triangle on transparent bg
+    [R,G,B]=base.split()
+    tri = Image.merge('RGBA', (R, G, B, A))
+#crop it to the exact size of triangle!! to create primary pattern
+#box (left, top , right, buttom)
+    box =(originx,(originy-trih),(originx+triw),originy)
+    pattern_plain=tri.crop(box)
+    pattern_plain.save('pattern_plain.png')
+    print('....pattern created....')
+# add style to pattern
+    pattern = pattern_plain
+    #pattern= pattern_plain.filter(ImageFilter.EDGE_ENHANCE)
+    pattern.save('pattern_tri.png')
+    print('....stylized pattern....')
+#make square canvas for the output (wide = double size of height of primary pattern)
+    canvas =Image.new('RGBA',(2*trih,2*trih), (255,255,255,0))
+    canvas.save('tmpcanvas.png')
+    pcanvas=Image.new('RGBA',(2*trih,2*trih), (255,255,255,0))
+#put pattern on the canvas
+#make sure to put the tip of the triangle at the center of the canvas
+#because when we rotate the center of the object is the pivot point
+#note: paste command require the coordinate of top left corner
+#so point to paste the pattern is . . .
+    ccenterx = int(trih-triw/2)
+    canvas.paste(pattern_plain,(ccenterx,trih))
+# start rotate the pattern around every 40 degree
+    for i in range (0,360,40):
+        tmpcanvas = canvas
+        tmppat = canvas.rotate(i)
+        canvas= Image.alpha_composite(tmpcanvas,tmppat)
+# now we get half of the things
+    half = canvas
+    print('half already')
+#mirror the half and put in the space to create simple kaleidoscpoe effect
+    mirror = im.mirror(half)
+    half2= mirror.rotate(20)
+    print('mirrored')
+#merge 2 half
+    output=Image.alpha_composite(half,half2)
+    output.save("output.png")
+#def makegif():
+    #clip = mpy.ImageSequenceClip(outfilename, fps=3)
+    #clip.write_gif("%s.gif"%filename)
+def makekaleido(image) :
+    global base, filename, source, imgfile, n, outfilename
+    #IN CASE Working on filename in the laptop
+    #put image path
+    imgfile = "tweetimg.jpg"
+    filename = imgfile[:-4]
+    print(filename)
+    #load Image
+    source = Image.open(imgfile)
+    #source = image.copy()
+    x, y = source.size
+    if x > 1000:
+        newy = int(1000*y/x)
+        source =source.resize((1000,newy), Image.ANTIALIAS)
+        print('resize to %sx%s'%source.size)
+    #creat mask base the same size with source image
+    mask = Image.new('RGBA', source.size, (255,255,255,0))
+    print("mask size:%sx%s"%source.size)
+    #rotate source n times for a degree
+    n= 10
+    outfilename=[]
+    for a in range(n+n-2):
+        outfilename.insert(a,'0')
+    a= 10
+    base = source
+    for i in range(n):
+        base = source.rotate(31+i*a)
+        onepic()
+        output.save('%s%s.png'%(filename,i))
+        outfilename[i] = filename+str(i)+'.png'
+        if i!=0:
+            outfilename[2*n-2-i] = filename+str(i)+'.png'
+    clip = mpy.ImageSequenceClip(outfilename, fps=3)
+    clip.write_gif("%s.gif"%filename)
+    image2 = Image.open('tweetimg3.png')
+    return image2,clip
+if __name__ == '__main__':
+    makekaleido(image)
+</pre>