|
HELP! This is my latest assignment: For this assignment, you will create a web script that lets the user explore RGB colours. On the first page the user sees, they should specify two RGB colours.
When they submit this page, they should be presented with a range of colours in
between the two. For example, if the user enters the colours red (100% red, 0% green, 0% blue) and white (100% red, 100% green, 100% blue), your program might output a page containing this: Your program must never output more than 150 total colours, no matter how
many the user asks for. If the users asks for more, it should only output
150.
You have to be careful about the spacing when outputting the RGB percentage values. You will have to convert the numbers to strings and concatenate them. For example, this statement will output part of the style attribute: print 'style="background-color:
rgb(' + str(r) +
'%' All of your XHTML (including generated XHTML) and
CSS must be valid.
2. Create a web script that converts the values the user entered to integers, stores them in variables, and outputs them. 3. Modify the web script so it counts from 0 up to the number of steps they requested minus 1. So, if they ask for 5 steps, it outputs "0 1 2 3 4." 4. Modify the web script so it calculates and outputs the percentages of red for each step. Check these and make sure they're right: they start and end at the values specified by the user; there are the right number of steps; the steps are separated by the same amount. 5. Add in the calculation of the green and blue values and check those. 6. Use the calculated percentages to output the <div>s and make sure the colours look right. Make sure the generated XHTML is valid. 7. Add the checking for more than 150 steps. I have attached the two files I have so far for this. Please have a look and advise. Thanks! Jennine
--
|
Colour Blend
Colour 1
Red: %
Green: %
Blue: %
Colour 2
Red: %
Green: %
Blue: %
Steps
Number of steps:
Return to the index.
Title: Colour Blend import cgitb; cgitb.enable() import cgi form = cgi.FieldStorage() print "Content-type: text/html" print print """ """ print form int(["red1"].value),"%" print form int(["green1"].value),"%" print form int(["blue1"].value),"%" print form int(["red2"].value),"%" print form int(["green2"].value),"%" print form int(["blue2"].value),"%" for i in range(nsteps): print i, print """fraction = (i+1.0)/nsteps r = (1-fraction)*red1 + fraction*red2 g = (1-fraction)*green1 + fraction*green2 b = (1-fraction)*blue1 + fraction*green2"""Colour Blend
Here is a mix of the two colours you specified:
Return to http://mail.python.org/mailman/listinfo/tutor
