Click here to Skip to main content
12,751,306 members (34,834 online)
Rate this:
Please Sign up or sign in to vote.
See more: convert image
I want to convert a string of formula (such as a/b+c* sqrt d)to an image
Like what the following webpage does.*%286%2F%284%2F%283%2F%282%2F1%29%29%29%29%29%2F4[^]

somebody provide an example or sth? thanks

(Is this a clear description?why no replys???)
Posted 12-Aug-12 4:15am
Updated 12-Aug-12 4:53am
Wes Aday 12-Aug-12 9:21am
So create a bitmap and draw the text on it. What are you having trouble with?
ChineseGuy 12-Aug-12 9:58am
there are many factors to consider which makes me confused about draw from where
And the size of the number,sqrt,Fractional line depends how many numbers or something else are included................

1 solution

Rate this: bad
Please Sign up or sign in to vote.

Solution 1

Converting anything in this way requires a little thinking in advance. You need to analyse the information you are converting and figure out how high and wide it might be. For example, showing a division operation such as:
a = --

requires first, two 'lines', each of which needs to be high enough to contain characters in the selected font. Secondly a 'line' high enough to contain a separator. The start of the expression "a = " should be positioned centred on the dividing line. The actual calculations would be based on the size of the image you wish to display and the size of the font being used for the characters, so assuming a font 10 px high by 8 px wide we would have something like:
moveto(32, 0) // position X, Y
moveto(0, 6)
write("a = ")
moveto(32, 12)
lineto(48, 12)
moveto(32, 14)

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

    Print Answers RSS
Top Experts
Last 24hrsThis month

Advertise | Privacy | Mobile
Web01 | 2.8.170215.1 | Last Updated 12 Aug 2012
Copyright © CodeProject, 1999-2017
All Rights Reserved. Terms of Service
Layout: fixed | fluid

CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100