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David Rose 2001-04-16 16:55:11 +00:00
parent ec3ac7ffad
commit 90665c17b9
2 changed files with 84 additions and 22 deletions
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104
pandatool/src/egg-mkfont/eggMakeFont.cxx
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@ -83,6 +83,26 @@ EggMakeFont() : EggWriter(true, false) {
"you re-rasterized the font at a different DPI instead.",
&EggMakeFont::dispatch_dimensions, &_got_output_size);
add_option
("sf", "factor", 0,
"The scale factor of the generated image. This is the factor by which "
"the font image is generated oversized, then reduced to its final size, "
"to generate antialiased letters. Values between 2.5 and 4 are generally "
"best. Normally, you should not specify this parameter, as egg-mkfont "
"will choose a scale factor automatically to best fit the letters in the "
"space available. If you do specify a scale factor with -sf, you must "
"also specify an image size with -d.",
&EggMakeFont::dispatch_double, &_got_scale_factor, &_scale_factor);
add_option
("nr", "", 0,
"No reduce. After the oversized image is generated, rather than reducing "
"it to its final size, just leave it as it is, and assume the user will "
"reduce it later. This may be desireable if you intend to adjust the "
"letters by hand in some way after the image is generated.",
&EggMakeFont::dispatch_none, &_no_reduce);
add_option
("g", "radius", 0,
"The radius of the Gaussian filter used to antialias the letters. [1.2]",
@ -141,7 +161,7 @@ EggMakeFont() : EggWriter(true, false) {
add_option
("scs", "", 0,
"Small caps scale: the ratio of the size of a lowercase letter to "
"its uppercase equivalent, when -sc is in effect. [0.7]",
"its uppercase equivalent, when -sc is in effect. [0.8]",
&EggMakeFont::dispatch_double, NULL, &_small_caps_scale);
_fg.set(1.0, 1.0, 1.0, 1.0);
@ -155,7 +175,7 @@ EggMakeFont() : EggWriter(true, false) {
_gaussian_radius = 1.2;
_ds = 1.0;
_scale = 1.0;
_small_caps_scale = 0.7;
_small_caps_scale = 0.8;
}
@ -639,21 +659,37 @@ run() {
_font->sort_chars_by_height();
// Choose a suitable image size if the user didn't specify one.
if (!_got_output_size) {
// Choose a suitable image size and/or scale factor.
if (_got_scale_factor && _got_output_size) {
// The user specified both; we accept the scale factor.
if (!consider_scale_factor(_scale_factor)) {
nout << "Ran out of room on font image; try increasing the image "
"size or the scale factor.\n";
exit(1);
}
} else if (_got_output_size) {
// The user specified an output size, but not a scale factor.
choose_scale_factor();
} else if (_got_scale_factor) {
// The user specified a scale factor, but not an output size.
// This is really an error.
nout << "It is meaningless to specify a scale factor (-sf) without "
"also specifying an image size (-d). Ignoring scale factor.\n";
choose_image_size();
} else {
// The user constrained us to use a particular image size, so
// choose a suitable scale factor for that size.
choose_scale_factor();
// The user did not specify anything. This is really preferred.
// We'll decide what's best.
choose_image_size();
}
_working_poly_pixels = _poly_pixels * _scale_factor;
_output_image.clear(_working_xsize, _working_ysize, _output_zsize);
// If we specified 1.0 for both foreground and background alpha, we
// don't really want to use alpha.
// If the user specified 1.0 for both foreground and background
// alpha, we don't really want to use alpha.
_use_alpha = (_output_zsize != 3) && (_fg[3] != 1.0 || _bg[3] != 1.0);
if (_use_alpha && _output_zsize == 1) {
// If we have only one channel and we're using alpha, then the
@ -748,22 +784,46 @@ run() {
// All done! Write everything out.
nout << "Scale factor is " << _scale_factor << "\n";
PNMImage small_image(_output_xsize, _output_ysize, _output_zsize);
small_image.gaussian_filter_from(_gaussian_radius, _output_image);
if (_no_reduce) {
// Scaling of the final image forbidden by the user.
nout << "Image destination size is " << _output_xsize
<< " by " << _output_ysize << " by " << _output_zsize
<< "; not reducing.\n";
nout << "Generating " << _working_xsize << " by " << _working_ysize
<< " by " << _output_zsize << " image: "
<< _output_image_filename << "\n";
_output_image.write(_output_image_filename);
} else if (_output_xsize == _working_xsize &&
_output_ysize == _working_ysize) {
// Scaling unnecessary, because the scale factor is 1.0.
nout << "Generating " << _output_xsize << " by " << _output_ysize
<< " by " << _output_zsize << " image: "
<< _output_image_filename << "\n";
_output_image.write(_output_image_filename);
} else {
// The normal path: reduce the final image by the scale factor to
// antialias the letters.
PNMImage small_image(_output_xsize, _output_ysize, _output_zsize);
small_image.gaussian_filter_from(_gaussian_radius, _output_image);
// Fix antialiasing, if required.
if (_use_alpha && _bg[3] != 0.0 && _bg[3] != 1.0) {
// If we have some non-transparent background, we need to
// compensate for the antialiasing.
unsmooth_rgb(small_image);
// Fix antialiasing, if required.
if (_use_alpha && _bg[3] != 0.0 && _bg[3] != 1.0) {
// If we have some non-transparent background, we need to
// compensate for the antialiasing.
unsmooth_rgb(small_image);
}
nout << "Generating " << _output_xsize << " by " << _output_ysize
<< " by " << _output_zsize << " image: "
<< _output_image_filename << "\n";
small_image.write(_output_image_filename);
}
nout << "Generating " << _output_xsize << " by " << _output_ysize
<< " by " << _output_zsize << " image: "
<< _output_image_filename << "\n";
small_image.write(_output_image_filename);
write_egg_file();
}

2
pandatool/src/egg-mkfont/eggMakeFont.h
View File

@ -65,7 +65,9 @@ private:
int _output_xsize, _output_ysize, _output_zsize;
double _buffer_pixels;
double _poly_pixels;
bool _got_scale_factor;
double _scale_factor;
bool _no_reduce;
double _gaussian_radius;
double _ds;
double _scale;