/[cvs]/fract/mandelzoom.cgi
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revision 1.5 by teddy, Sun Feb 25 22:54:25 2001 UTC revision 1.8 by teddy, Mon Feb 26 11:26:15 2001 UTC
# Line 28  xmax, ymax = width-1, height-1 Line 28  xmax, ymax = width-1, height-1
28  if form.has_key('cx'):  if form.has_key('cx'):
29      cx= atof(form['cx'].value)      cx= atof(form['cx'].value)
30  else:  else:
31      cx= 0      cx= 0.0
32    
33  if form.has_key('cy'):  if form.has_key('cy'):
34      cy= atof(form['cy'].value)      cy= atof(form['cy'].value)
35  else:  else:
36      cy= 0      cy= 0.0
37    
38  if form.has_key('diag'):  if form.has_key('diag'):
39      diag= atof(form['diag'].value)      diag= atof(form['diag'].value)
# Line 53  if not (form.has_key('type') and form['t Line 53  if not (form.has_key('type') and form['t
53    
54  <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">  <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
55  <HTML><HEAD>  <HTML><HEAD>
56  <TITLE>Mandel Set Zoomer</TITLE>  <TITLE>Mandelbrot Set Zoomer</TITLE>
57  </HEAD>  </HEAD>
58  <BODY>  <BODY>
59  <H1>Mandel Set Zoomer</H1>  <H1>Mandelbrot Set Zoomer</H1>
60    
61  <FORM ACTION="mandelzoom.cgi" METHOD=GET>  <FORM ACTION="mandelzoom.cgi" METHOD=GET>
62    
# Line 68  if not (form.has_key('type') and form['t Line 68  if not (form.has_key('type') and form['t
68          ds="&debug=on"          ds="&debug=on"
69      else:      else:
70          ds=""          ds=""
71        if form.has_key('image.x') and form.has_key('image.y'):
72            # Adjust cx and cy
73            ix= atof(form['image.x'].value)
74            iy= atof(form['image.y'].value)
75            owidth= atof(form['owidth'].value)
76            oheight= atof(form['oheight'].value)
77            diagp= math.sqrt(owidth**2 + oheight**2)
78            scale= diagp/diag
79            cx= (ix/scale) + (cx - (owidth / (scale*2)))
80            cy= ((oheight-iy)/scale) + (cy - (oheight / (scale*2)))
81      if form.has_key('zoom'):      if form.has_key('zoom'):
82          zoom=atof(form['zoom'].value)          zoom=atof(form['zoom'].value)
83          diag=diag/zoom          diag=diag/zoom
84      else:      else:
85          # If no zoom provided, don't actually zoom          # If no zoom provided, don't actually zoom
86          zoom= 2          zoom= 2.0
87      print 'SRC="mandelzoom.cgi?type=image&width=%s&height=%s&iter=%s%s&diag=%s&cx=%s&cy=%s"' % (str(width), str(height), str(maxiter), ds, str(diag), str(cx), str(cy)),      print 'SRC="mandelzoom.cgi?type=image&width=%s&height=%s&iter=%s%s&diag=%s&cx=%s&cy=%s"' % (str(width), str(height), str(maxiter), ds, str(diag), str(cx), str(cy)),
88      print 'ALIGN=BOTTOM HEIGHT="%s"' % (str(height)),      print 'ALIGN=BOTTOM HEIGHT="%s"' % (str(height)),
89      print 'WIDTH="%s"><P>' % (str(width))      print 'WIDTH="%s"><P>' % (str(width))
# Line 86  if not (form.has_key('type') and form['t Line 96  if not (form.has_key('type') and form['t
96          if zv == 1:          if zv == 1:
97              print '>Pan'              print '>Pan'
98          elif zv < 1:          elif zv < 1:
99              if int(1/zv) == 1/zv:              print '>Out ÷%s' % (str(1/zv))
                 print '>Out ÷%s' % (str(int(1/zv)))  
             else:  
                 print '>Out ÷%s' % (str(1/zv))  
100          else:          else:
101              print '>In ×%s' % (str(zv))              print '>In ×%s' % (str(zv))
102      print '</SELECT>'      print '</SELECT>'
# Line 105  if not (form.has_key('type') and form['t Line 112  if not (form.has_key('type') and form['t
112      else:      else:
113          print '>'          print '>'
114      print '<INPUT TYPE=SUBMIT VALUE="Apply">'      print '<INPUT TYPE=SUBMIT VALUE="Apply">'
115      for var in (("diag", diag), ("cx", cx), ("cy", cy)):      for var in (("diag", diag), ("cx", cx), ("cy", cy), ("owidth", width),
116                    ("oheight", height)):
117          print '<INPUT TYPE=HIDDEN NAME="%s" VALUE="%s">' % var          print '<INPUT TYPE=HIDDEN NAME="%s" VALUE="%s">' % var
118      print '<INPUT TYPE=HIDDEN NAME=type VALUE="html">'      print '<INPUT TYPE=HIDDEN NAME=type VALUE="html">'
119    
120      print """</FORM>      print """</FORM><P>
121    After changing any settings, don't forget to change the "Zoom" setting
122    to "Pan" if you don't want to zoom when applying them.
123  </BODY></HTML>"""  </BODY></HTML>"""
124      sys.exit(0)      sys.exit(0)
125    
# Line 121  scale= diagp/diag Line 131  scale= diagp/diag
131  x= (width/2.0)/scale  x= (width/2.0)/scale
132  y= (height/2.0)/scale  y= (height/2.0)/scale
133    
134  c1= cx - x + cy - y * (0+1j)  c1= cx - x + (cy - y) * (0+1j)
135  c2= cx + x + cy + y * (0+1j)  c2= cx + x + (cy + y) * (0+1j)
136    
137  #print width, height, diag, cx, cy, diagp, scale, x, y, c1, c2  #print width, height, diag, cx, cy, diagp, scale, x, y, c1, c2
138  #sys.exit(0)  #sys.exit(0)
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