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

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Revision as of 17:35, 16 June 2015

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 </pre>
+TwitterBot :MID TERM ASSIGNMENT
+======Kaleidoscope Bot=======
+code for the image processing
+=============================
+from PIL import Image, ImageDraw,ImageFilter
+import PIL.ImageOps as im
+import numpy as np
+def makekaleido():
+#put image path
+    imgfile = "img.jpg"
+#load Image
+    source = Image.open(imgfile)
+#adjust the source image a bit for nicer result
+    base = source.rotate(31)
+#creat mask base the same size with source image
+    mask = Image.new('RGBA', base.size, (255,255,255,0))
+    x, y = base.size
+# one variable to vary the size of triangle
+    var = y/14
+# Define triangle mask position (triangle with 20 degree)
+    (originx,originy) = (x/3,int(0.9*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,(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
+#mirror the half and put in the space to create simple kaleidoscpoe effect
+    mirror = im.mirror(half)
+    half2= mirror.rotate(20)
+#merge 2 half
+    output=Image.alpha_composite(half,half2)
+    output.save("final.png")
+if __name__ == '__main__':
+    makekaleido()