James.Gray@ed.ac.uk wjagray.co.uk/maths/ ICT writing mathematics
email@example.com firstname.lastname@example.org email@example.com firstname.lastname@example.org email@example.com
http://moodle.org/mod/forum/discuss.php?d=130 61993 62002 99167
Jennifer Kyrnin firstname.lastname@example.org
spacing David Siegel
It is possible to layer a .png made from an .svg with Inkscape,
without any editing, other than adjusting the number of pixels in the
exported bitmap, over another similar .png and over MathML
and jipsen TeX as shown in examples and sphere_0.xml and locals.html
will layer over and obscure the MathML and TeX. Also, the SHOW/HIDE
and UPDATE buttons and window appear when unwanted when the
src="ASCIIsvg.js" script is used with a transparent .png .
It is possible to use segments of cubic Bezier curves with the control
points used to match the slope of the adjacent segment and the curve,
making the jipsen ASCIIsvg.js plot circumventable, although with a lot
more work. Labels at any angle and equations then can be applied to
the plot. Any diagram or plot that I can think of can therefore be
rendered, albeit somewhat awkwardly at times.
The plugins, scripts, tools and that are needed to acomplish this are
www.w3.org/Math/XSL/ pmathml.xsl (mathml.xsl ctop.xsl pmathmlcss.xsl)
http://math.chapman.edu/~jipsen/mathml/asciimath.html : ASCIIsvg.js ASCIIMathML.js d.svg
required to make .png from non opaque .svg readable by IE 6
http://downloads.sourceforge.net/inkscape/Inkscape-0.45.1-11.win32.exe or .7z
It appears that, as far as I can tell, that .png cannot layer over .svg
in the predominant browser in use today, MS Internet Explorer. My friend,
Chris Hartung, tells me it would violate the Pauli exclusion principle
and Heisenberg uncertainty principle; however, he talks authoratatively
at length about things that he does not have a complete understanding.
Seriously however, Sam Fortiner,
http://blogs.msdn.com/ie/archive/2005/04/26/412263.aspx , says the IE has
per-pixes alpha support is lacking.
In conclusion, TeX and MathML can coexist under a transparent .png layer,
but will be obscured by any .svg layer.
Tex, MathML, .svg and .png can
coexist in a document without layers, but for legends at an angle and
TeX or MathML equations in a .svg or jipsen ASCIIsvg.js plot, it appears
the now predominate browser cannot perform.
Some combinations will work and others will not; when the Tex or
MathML equations are put in a table with a transparent graphical .png
layer over it the expression will be rendered properly with TeX and
.svg in the table or with MathML and .png but not Tex with .png or
MathML with .svg . Perhaps even now combinations can be found that will
be more useful.
The tools used to take up space to control the location of something are
indirect at the present.
David Siegel has a one pixel transparent .gif
I have an 80x80 transparent .png with miniscule specks in the corner:
t_8-trans.png and space_8-trans.png .