Function:font2tex
From S2PLOT
font2tex
Use a named freetype font to create a texture map.
Prototype
unsigned int font2tex(char *fontfilename, char *text, int fontsizepx, int border);
Description
Load a named freetype font, where fontfilename includes the full pathname to the font, to generate a texture map from the input text. Argument fontsizepx controls the font size, and an optional border can be drawn around the text using border > 0.
This function is only available if the S2FREETYPE environment variable has been set to 'yes'.
See Also
Code Example
#include <stdio.h>
#include <stdlib.h>
#include "s2plot.h"
unsigned int tid;
void cb(double *t, int *kc)
{
XYZ xyz = {0.0, 0.3, 0.4}; /* Location */
float isize = 0.02; /* Texture scale */
XYZ str = { 0.0, 0.0, 0.0}; /* No stretch */
COLOUR col = { 1.0, 1.0, 0.0 }; /* Yellow */
float alpha = 0.9; /* Alpha channel */
char trans = 's'; /* Transparency */
ds2vbb(xyz, str, isize, col, tid, alpha, trans); /* Draw the billboard */
}
int main(int argc, char *argv[])
{
s2opend("/?",argc,argv); /* Open the display */
s2svp(-1.0,1.0, -1.0,1.0, -1.0,1.0); /* Set the viewport coords */
s2swin(-1.0,1.0, -1.0,1.0, -1.0,1.0); /* Set the window coordinates */
s2box("BCDE",0,0,"BCDE",0,0,"BCDE",0,0); /* Draw a bounding box */
char font[64]; /* Allocate font name string */
sprintf(font,"/Library/Fonts/Arial Black"); /* Path to font */
/* NOTE: This depends on your local system config */
tid = font2tex(font,"s2plot",32,4); /* Create the texture */
cs2scb(&cb); /* Install a callback */
s2show(1); /* Open the s2plot window */
return 1;
}
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