On Sat, 17 Oct 1998 12:39:19 +0200, "Johannes Hubert"
<jhu### [at] algonetse> wrote:

>Ross Smith wrote in message <362### [at] ihugconz>...
>>
>>No. The only Truetype fonts that you can trust to be present on *every*
>>Win32 box are Arial, Courier New, and Times New Roman.
>
>Are you sure? I would guess that MS Sans Serif is always included too, since
>it is the default font to draw all dialogs, menus etc. (not Arial, though
>they are very similar).

MS Sans Serif isn't a TrueType font.  OSR2 also comes with Comic,
Impact, and Verdana.  Of course, there's also WingDings, but that
isn't of much use for text.

Post a reply to this message

Ross Smith wrote in message <362### [at] ihugconz>...
>No. The only Truetype fonts that you can trust to be present on *every*
>Win32 box are Arial, Courier New, and Times New Roman.

Don't forget Tahoma.

Eric


--------------------------------
http://www.geocities.com/SiliconValley/Heights/2354/
http://www.datasync.com/~reba/

Post a reply to this message

On Mon, 19 Oct 1998 01:03:09 -0500, Eric Freeman <eri### [at] geocitiescom> wrote:
>Ross Smith wrote in message <362### [at] ihugconz>...
>>No. The only Truetype fonts that you can trust to be present on *every*
>>Win32 box are Arial, Courier New, and Times New Roman.
>
>Don't forget Tahoma.

I have a virgin installation of Win95, August 1995 version, installed here 
and I don't see Tahoma listed.  Neither is it listed on my NT 4.0 installation,
either SP3 or SP4 beta.  It was apparently included with Win98 and NT5 beta 2, 
however.  So I wouldn't trust it to be present on every win32 box - it's only
present on two of the five Win32 operating systems that run on this machine, 
and both were released within the past few months.

Arial Black, Comic Sans, the Verdana family, and Impact MT seem to have been
included with IE 3 and higher, which explains their widespread presence, and
they are (afaik) available from Microsoft for free, so if there's a pressing
need for Verdana, it wouldn't be that big a deal to provide a link to MS' 
website for anyone not having it.

Post a reply to this message

Hi all, could anyone please help me.

I would like (desperatley need) to render a mobius strip in POV-Ray but
can't figure out how. Does anyone know? Any help greatly appreciated.


The equation for a Mobius Strip is :

The mobius strip in 3 dimensions can be represented parameterically
f(s,t) as follows 

x = cos(s) + t * cos(s/2) * cos(s)
y = sin(s) + t * cos(s/2) * sin(s)
z = t * sin(s/2)



where s ranges from 0 to 2*pi and t ranges typically from -0.3 to 0.3.


Thanks in Advance,

Colm.

-- 
Colm Hayden

Phone: 	+44 1232 269166
FAX:	+44 1232 269111

Post a reply to this message

Colm Hayden <c.h### [at] apion-tsscom> writes:

> Hi all, could anyone please help me.
> 
> I would like (desperatley need) to render a mobius strip in POV-Ray but
> can't figure out how. Does anyone know? Any help greatly appreciated.
[...]

You can approximate it with bicubic patches. I have generated them with an
external program:

------------------------------ begin pov code ------------------------------
//
// POV-Ray file generated from "DAT/MOEBIUS.MAK"
// by Convert (c) 1997 Thomas Willhalm
//

#include "colors.inc"

global_settings { assumed_gamma 1.2 }

background { color White }

light_source { <3,10,7> rgb 1 }

camera {
   location  <7,7,7>
   look_at <0,0,0>
}

#declare rad =0;
#declare st = 4;
#declare fl = 0.0;
#declare tex1=texture{pigment{color Blue}};

// MQUAD8 No. 1
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
  <4,0,1><4.06713,0.530867,1><4.02573,1.066,0.9936><3.8758,1.6054,0.9808>
 
<4,0,0.333333><3.92123,0.510456,0.333333><3.83976,1.02902,0.3312><3.75557,1.5557,0.326933>
 
<4,0,-0.333333><3.87582,0.510022,-0.333333><3.75429,1.012,-0.3312><3.6354,1.50593,-0.326933>
  <4,0,-1><3.9309,0.529567,-1><3.76933,1.01493,-0.9936><3.5153,1.4561,-0.9808>
  texture {tex1}
}
// MQUAD8 No. 2
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<3.8758,1.6054,0.9808><3.72327,2.14513,0.9679><3.46433,2.643,0.948933><3.099,3.099,0.9239>
 
<3.75557,1.5557,0.326933><3.48369,2.00493,0.322633><3.2047,2.45923,0.316311><2.9186,2.9186,0.307967>
 
<3.6354,1.50593,-0.326933><3.32929,1.92169,-0.322633><3.03022,2.33244,-0.316311><2.7382,2.7382,-0.307967>
 
<3.5153,1.4561,-0.9808><3.26007,1.8954,-0.9679><2.9409,2.26263,-0.948933><2.5578,2.5578,-0.9239>
  texture {tex1}
}
// MQUAD8 No. 3
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<3.099,3.099,0.9239><2.73117,3.55413,0.8987><2.27927,3.92407,0.8679><1.7433,4.2088,0.8315>
 
<2.9186,2.9186,0.307967><2.48861,3.2346,0.299567><2.0496,3.5506,0.2893><1.60157,3.8666,0.277167>
 
<2.7382,2.7382,-0.307967><2.30306,3.00027,-0.299567><1.87693,3.26233,-0.2893><1.45983,3.5244,-0.277167>
 
<2.5578,2.5578,-0.9239><2.1745,2.85113,-0.8987><1.76127,3.05927,-0.8679><1.3181,3.1822,-0.8315>
  texture {tex1}
}
// MQUAD8 No. 4
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<1.7433,4.2088,0.8315><1.20547,4.49137,0.794967><0.624367,4.65747,0.7535><0,4.7071,0.7071>
 
<1.60157,3.8666,0.277167><1.07547,3.99497,0.264989><0.541611,4.118,0.251167><0,4.2357,0.2357>
 
<1.45983,3.5244,-0.277167><0.965467,3.59903,-0.264989><0.478856,3.679,-0.251167><0,3.7643,-0.2357>
 
<1.3181,3.1822,-0.8315><0.875467,3.30357,-0.794967><0.4361,3.34047,-0.7535><0,3.2929,-0.7071>
  texture {tex1}
}
// MQUAD8 No. 5
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<0,4.7071,0.7071><-0.6253,4.75383,0.660667><-1.2416,4.6727,0.610167><-1.8489,4.4637,0.5556>
 
<0,4.2357,0.2357><-0.5419,4.1501,0.220222><-1.08749,4.05539,0.203389><-1.63677,3.95157,0.1852>
 
<0,3.7643,-0.2357><-0.478567,3.6469,-0.220222><-0.953444,3.53861,-0.203389><-1.42463,3.43943,-0.1852>
 
<0,3.2929,-0.7071><-0.4353,3.24423,-0.660667><-0.839467,3.12237,-0.610167><-1.2125,2.9273,-0.5556>
  texture {tex1}
}
// MQUAD8 No. 6
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<-1.8489,4.4637,0.5556><-2.45583,4.2517,0.500967><-3.0001,3.92437,0.443333><-3.4817,3.4817,0.3827>
 
<-1.63677,3.95157,0.1852><-2.10846,3.65979,0.166989><-2.57826,3.35799,0.147778><-3.04617,3.04617,0.127567>
 
<-1.42463,3.43943,-0.1852><-1.81808,3.15314,-0.166989><-2.21341,2.87688,-0.147778><-2.61063,2.61063,-0.127567>
 
<-1.2125,2.9273,-0.5556><-1.5847,2.73177,-0.500967><-1.90557,2.48103,-0.443333><-2.1751,2.1751,-0.3827>
  texture {tex1}
}
// MQUAD8 No. 7
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<-3.4817,3.4817,0.3827><-3.96147,3.0365,0.322033><-4.33477,2.5113,0.2595><-4.6016,1.9061,0.1951>
 
<-3.04617,3.04617,0.127567><-3.37038,2.59043,0.107344><-3.6875,2.127,0.0865><-3.99753,1.65587,0.0650333>
 
<-2.61063,2.61063,-0.127567><-2.86449,2.20127,-0.107344><-3.12543,1.7996,-0.0865><-3.39347,1.40563,-0.0650333>
 
<-2.1751,2.1751,-0.3827><-2.4438,1.869,-0.322033><-2.64857,1.5291,-0.2595><-2.7894,1.1554,-0.1951>
  texture {tex1}
}
// MQUAD8 No. 8
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<-4.6016,1.9061,0.1951><-4.8656,1.29933,0.130667><-4.9984,0.663967,0.0656333><-5,0,0>
 
<-3.99753,1.65587,0.0650333><-4.11969,1.10679,0.0435556><-4.23162,0.554833,0.0218778><-4.33333,0,0>
 
<-3.39347,1.40563,-0.0650333><-3.47431,0.934211,-0.0435556><-3.56538,0.465667,-0.0218778><-3.66667,0,0>
 
<-2.7894,1.1554,-0.1951><-2.92947,0.7816,-0.130667><-2.99967,0.396467,-0.0656333><-3,0,0>
  texture {tex1}
}
// MQUAD8 No. 9
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<-5,0,0><-4.9984,-0.663967,-0.0656333><-4.8656,-1.29933,-0.130667><-4.6016,-1.9061,-0.1951>
 
<-4.33333,0,0><-4.23162,-0.554833,-0.0218778><-4.11969,-1.10679,-0.0435556><-3.99753,-1.65587,-0.0650333>
 
<-3.66667,0,0><-3.56538,-0.465667,0.0218778><-3.47431,-0.934211,0.0435556><-3.39347,-1.40563,0.0650333>
 
<-3,0,0><-2.99967,-0.396467,0.0656333><-2.92947,-0.7816,0.130667><-2.7894,-1.1554,0.1951>
  texture {tex1}
}
// MQUAD8 No. 10
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<-4.6016,-1.9061,-0.1951><-4.33477,-2.5113,-0.2595><-3.96147,-3.0365,-0.322033><-3.4817,-3.4817,-0.3827>
 
<-3.99753,-1.65587,-0.0650333><-3.6875,-2.127,-0.0865><-3.37038,-2.59043,-0.107344><-3.04617,-3.04617,-0.127567>
 
<-3.39347,-1.40563,0.0650333><-3.12543,-1.7996,0.0865><-2.86449,-2.20127,0.107344><-2.61063,-2.61063,0.127567>
 
<-2.7894,-1.1554,0.1951><-2.64857,-1.5291,0.2595><-2.4438,-1.869,0.322033><-2.1751,-2.1751,0.3827>
  texture {tex1}
}
// MQUAD8 No. 11
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<-3.4817,-3.4817,-0.3827><-3.0001,-3.92437,-0.443333><-2.45583,-4.2517,-0.500967><-1.8489,-4.4637,-0.5556>
 
<-3.04617,-3.04617,-0.127567><-2.57826,-3.35799,-0.147778><-2.10846,-3.65979,-0.166989><-1.63677,-3.95157,-0.1852>
 
<-2.61063,-2.61063,0.127567><-2.21341,-2.87688,0.147778><-1.81808,-3.15314,0.166989><-1.42463,-3.43943,0.1852>
 
<-2.1751,-2.1751,0.3827><-1.90557,-2.48103,0.443333><-1.5847,-2.73177,0.500967><-1.2125,-2.9273,0.5556>
  texture {tex1}
}
// MQUAD8 No. 12
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<-1.8489,-4.4637,-0.5556><-1.2416,-4.6727,-0.610167><-0.6253,-4.75383,-0.660667><0,-4.7071,-0.7071>
 
<-1.63677,-3.95157,-0.1852><-1.08749,-4.05539,-0.203389><-0.5419,-4.1501,-0.220222><0,-4.2357,-0.2357>
 
<-1.42463,-3.43943,0.1852><-0.953444,-3.53861,0.203389><-0.478567,-3.6469,0.220222><0,-3.7643,0.2357>
 
<-1.2125,-2.9273,0.5556><-0.839467,-3.12237,0.610167><-0.4353,-3.24423,0.660667><0,-3.2929,0.7071>
  texture {tex1}
}
// MQUAD8 No. 13
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<0,-4.7071,-0.7071><0.624367,-4.65747,-0.7535><1.20547,-4.49137,-0.794967><1.7433,-4.2088,-0.8315>
 
<0,-4.2357,-0.2357><0.541611,-4.118,-0.251167><1.07547,-3.99497,-0.264989><1.60157,-3.8666,-0.277167>
 
<0,-3.7643,0.2357><0.478856,-3.679,0.251167><0.965467,-3.59903,0.264989><1.45983,-3.5244,0.277167>
 
<0,-3.2929,0.7071><0.4361,-3.34047,0.7535><0.875467,-3.30357,0.794967><1.3181,-3.1822,0.8315>
  texture {tex1}
}
// MQUAD8 No. 14
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<1.7433,-4.2088,-0.8315><2.27927,-3.92407,-0.8679><2.73117,-3.55413,-0.8987><3.099,-3.099,-0.9239>
 
<1.60157,-3.8666,-0.277167><2.0496,-3.5506,-0.2893><2.48861,-3.2346,-0.299567><2.9186,-2.9186,-0.307967>
 
<1.45983,-3.5244,0.277167><1.87693,-3.26233,0.2893><2.30306,-3.00027,0.299567><2.7382,-2.7382,0.307967>
 
<1.3181,-3.1822,0.8315><1.76127,-3.05927,0.8679><2.1745,-2.85113,0.8987><2.5578,-2.5578,0.9239>
  texture {tex1}
}
// MQUAD8 No. 15
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
 
<3.099,-3.099,-0.9239><3.46433,-2.643,-0.948933><3.72327,-2.14513,-0.9679><3.8758,-1.6054,-0.9808>
 
<2.9186,-2.9186,-0.307967><3.2047,-2.45923,-0.316311><3.48369,-2.00493,-0.322633><3.75557,-1.5557,-0.326933>
 
<2.7382,-2.7382,0.307967><3.03022,-2.33244,0.316311><3.32929,-1.92169,0.322633><3.6354,-1.50593,0.326933>
 
<2.5578,-2.5578,0.9239><2.9409,-2.26263,0.948933><3.26007,-1.8954,0.9679><3.5153,-1.4561,0.9808>
  texture {tex1}
}
// MQUAD8 No. 16
bicubic_patch {
  type 0 flatness fl u_steps st v_steps st
  <3.8758,-1.6054,-0.9808><4.02573,-1.066,-0.9936><4.06713,-0.530867,-1><4,0,-1>
 
<3.75557,-1.5557,-0.326933><3.83976,-1.02902,-0.3312><3.92123,-0.510456,-0.333333><4,0,-0.333333>
 
<3.6354,-1.50593,0.326933><3.75429,-1.012,0.3312><3.87582,-0.510022,0.333333><4,0,0.333333>
  <3.5153,-1.4561,0.9808><3.76933,-1.01493,0.9936><3.9309,-0.529567,1><4,0,1>
  texture {tex1}
}

------------------------------  end  pov code ------------------------------

I hope this helps.

Thomas

-- 
http://www.fmi.uni-konstanz.de/~willhalm

Post a reply to this message

Colm Hayden wrote:
> 
> Hi all, could anyone please help me.
> 
> I would like (desperatley need) to render a mobius strip in POV-Ray but
> can't figure out how. Does anyone know? Any help greatly appreciated.
> 
> The equation for a Mobius Strip is :
> 
> The mobius strip in 3 dimensions can be represented parameterically
> f(s,t) as follows
> 
> x = cos(s) + t * cos(s/2) * cos(s)
> y = sin(s) + t * cos(s/2) * sin(s)
> z = t * sin(s/2)
> 
> where s ranges from 0 to 2*pi and t ranges typically from -0.3 to 0.3.

Try this:

#local R1=x;
#local R2=5*x;
#local N=y;

mesh {
#local Angle=0;
#while (Angle<360)
#local Angl2=Angle+5; // or whatever increment you want

smooth_triangle {
  vrotate(R2+*vrotate( R1,z*Angle/2),Angle*y),
  vrotate(vrotate(N,z*Angle/2),Angle*y),
  vrotate(R2+*vrotate(-R1,z*Angle/2),Angle*y),
  vrotate(vrotate(N,z*Angle/2),Angle*y),
  vrotate(R2+*vrotate(-R1,z*Angl2/2),Angl2*y)
  vrotate(vrotate(N,z*Angl2/2),Angl2*y)
}
smooth_triangle {
  vrotate(R2+*vrotate( R1,z*Angle/2),Angle*y),
  vrotate(vrotate(N,z*Angle/2),Angle*y),
  vrotate(R2+*vrotate( R1,z*Angl2/2),Angl2*y),
  vrotate(vrotate(N,z*Angl2/2),Angl2*y),
  vrotate(R2+*vrotate(-R1,z*Angl2/2),Angl2*y)
  vrotate(vrotate(N,z*Angl2/2),Angl2*y)
}
#local Angle=Angl2;
#end
}

-- 
"Have the manners not to be hittin' the man until he's your husband, and
entitled to hit back!"

Post a reply to this message

I think I got the name wrong... there is a font which is used for making the
arrows on the right side of drop-down list boxes, arrows on the ends of
scroll bars, etc.

Eric

--------------------------------
http://www.geocities.com/SiliconValley/Heights/2354/
http://www.datasync.com/~reba/

Post a reply to this message

On Tue, 20 Oct 1998 19:01:18 -0500, Eric Freeman <eri### [at] geocitiescom> wrote:
>I think I got the name wrong... there is a font which is used for making the
>arrows on the right side of drop-down list boxes, arrows on the ends of
>scroll bars, etc.

Marlett

Post a reply to this message

You may try to generate it a a cloud of small spheres (or other objects for
some special effects), using loops. A 628*60 objects (stepsize 0.01 for doth
s and t) will do, I think.

Sorry, no time to write example code.

Frans

Post a reply to this message

I was running Office 97 from another drive today and it told me that font
needed to be installed.  I later ran across it in the MS knowledge base.
Apparently it requires a seperate installation program.  The reason for
installing the font that was given was that it can do Euporean currency
characters.

Now don't you feel better knowing that? ;)

-Mike

Eric Freeman wrote:

> Don't forget Tahoma.
>
>

Post a reply to this message

Attachments:
Download 'us-ascii' (1 KB)