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#!/usr/bin/python |
#!/usr/bin/python |
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import cgi, Image, ImageDraw, sys |
import cgi, Image, ImageDraw, sys, math |
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from string import atoi |
from string import atoi, atof |
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# This is to get backtrace output |
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sys.stderr = sys.stdout |
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# Uncomment this to get the backtrace more readable |
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#print "Content-Type: text/plain" |
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#print "" |
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form= cgi.FieldStorage() |
form= cgi.FieldStorage() |
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# Image size |
# Image size |
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if form.has_key('width'): |
if form.has_key('width'): |
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width=atoi(form['width'].value) |
width= atoi(form['width'].value) |
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else: |
else: |
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width= 570 |
width= 480 |
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if form.has_key('height'): |
if form.has_key('height'): |
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height=atoi(form['height'].value) |
height= atoi(form['height'].value) |
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else: |
else: |
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height= 570 |
height= 480 |
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xmax, ymax = width-1, height-1 # Coordinate maximums |
xmax, ymax = width-1, height-1 # Coordinate maximums |
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# Complex number in center of image is (cx+cy*j) |
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if form.has_key('cx'): |
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cx= atof(form['cx'].value) |
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else: |
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cx= 0 |
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if form.has_key('cy'): |
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cy= atof(form['cy'].value) |
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else: |
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cy= 0 |
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if form.has_key('diag'): |
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diag= atof(form['diag'].value) |
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else: |
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diag= math.sqrt(8) |
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debug= form.has_key('debug') |
debug= form.has_key('debug') |
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if debug: |
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del form['debug'] |
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if form.has_key('iter'): |
if form.has_key('iter'): |
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maxiter=atoi(form['iter'].value) |
maxiter= atoi(form['iter'].value) |
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del form['iter'] |
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else: |
else: |
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maxiter= 270 |
maxiter= 240 |
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sys.stderr = sys.stdout |
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print "Content-Type: text/plain" |
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print "" |
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# If type==html, then output an HTML page, not an image |
# If type!=image, then output an HTML page, not an image |
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if form.has_key('type') and form['type'].value == "html": |
if not (form.has_key('type') and form['type'].value == "image"): |
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del form['type'] |
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print """Content-Type: text/html |
print """Content-Type: text/html |
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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> |
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> |
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<FORM ACTION="mandelzoom.cgi" METHOD=GET> |
<FORM ACTION="mandelzoom.cgi" METHOD=GET> |
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<!-- implies TYPE=SUBMIT --> |
<!-- implies TYPE=SUBMIT -->""" |
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<INPUT TYPE=IMAGE NAME="image" SRC="mandelzoom.cgi?%s" ALIGN=BOTTOM |
print '<INPUT TYPE=IMAGE NAME="image"', |
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HEIGHT="%s" WIDTH="%s"> |
print 'WIDTH="%s"' % (str(width)), |
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print 'HEIGHT="%s"' % (str(height)), |
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if debug: |
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ds="&debug=on" |
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else: |
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ds="" |
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if form.has_key('zoom'): |
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zoom=atoi(form['zoom'].value) |
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diag=diag/zoom |
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else: |
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# If no zoom provided, don't actually zoom |
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zoom= 2 |
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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)), |
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print 'ALIGN=BOTTOM HEIGHT="%s"' % (str(height)), |
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print 'WIDTH="%s"><P>' % (str(width)) |
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print 'Zoom: <SELECT NAME="zoom">' |
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for zv in [1.0/5, 1.0/3, 1.0/2, 1.0/1.5, 1, 1.5, 2, 3, 5]: |
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print '<OPTION', |
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if zv==zoom: |
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print 'SELECTED', |
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print 'VALUE="%s"' % (str(zv)) |
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if zv == 1: |
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print '>Pan' |
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elif zv < 1: |
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if int(1/zv) == 1/zv: |
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print '>Out ÷%s' % (str(int(1/zv))) |
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else: |
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print '>Out ÷%s' % (str(1/zv)) |
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else: |
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print '>In ×%s' % (str(zv)) |
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print '</SELECT>' |
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print """Width: <INPUT TYPE=TEXT NAME="width" MAXLENGTH="4" SIZE="3" |
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VALUE="%s"> |
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Height: <INPUT TYPE=TEXT NAME="height" MAXLENGTH="4" SIZE="3" |
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VALUE="%s"> |
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Iterations: <INPUT TYPE=TEXT NAME="iter" MAXLENGTH="4" SIZE="3" |
Iterations: <INPUT TYPE=TEXT NAME="iter" MAXLENGTH="4" SIZE="3" |
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VALUE="%s"> |
VALUE="%s"> |
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Debug mode: <INPUT TYPE=CHECKBOX NAME="debug" %s>""" |
Debug mode: <INPUT TYPE=CHECKBOX NAME="debug" """ % (str(width), str(height), str(maxiter)), |
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for key in form.keys(): |
if debug: |
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print '<INPUT TYPE=HIDDEN NAME="%s" VALUE="%s">' % (key, form[key].value) |
print 'CHECKED>' |
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else: |
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print '>' |
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print '<INPUT TYPE=SUBMIT VALUE="Apply">' |
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#for key in form.keys(): |
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# if key not in ["zoom", "type", "debug", "image.x", "image.y", "iter", "height", "width"]: |
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# print '<INPUT TYPE=HIDDEN NAME="%s" VALUE="%s">' % (key, form[key].value) |
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#for var in [("diag", diag), ("cx", cx), ("cy", cy)]: |
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print '<INPUT TYPE=HIDDEN NAME=type VALUE="html">' |
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print """</FORM> |
print """</FORM> |
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</BODY></HTML>""" |
</BODY></HTML>""" |