TheCloud/panda3d
1
0
Fork 0
mirror of https://github.com/panda3d/panda3d.git synced 2025-09-30 16:58:40 -04:00
Code Issues Packages Projects Releases Wiki Activity

*** empty log message ***

Browse Source
This commit is contained in:
David Rose 2000-12-08 04:48:32 +00:00
parent 49d63b91b2
commit 07d379e231
4 changed files with 59 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
pandatool/src/egg-palettize/destTextureImage.cxx
View File

@ -49,8 +49,7 @@ DestTextureImage(TexturePlacement *placement) {
////////////////////////////////////////////////////////////////////
void DestTextureImage::
copy(TextureImage *texture) {
PNMImage image = texture->get_dest_image();
write(image);
write(texture->get_dest_image());
}
////////////////////////////////////////////////////////////////////

52
pandatool/src/egg-palettize/eggPalettize.cxx
View File

@ -313,6 +313,55 @@ describe_input_file() {
"also be overridden for a particular texture using the 'coverage' "
"keyword on the texture line.\n\n");
show_text(" :round fraction fuzz", 10,
"When the coverage area is computed, it may optionally be "
"rounded up to the next sizeable unit before placing the "
"texture within the palette. This helps reduce constant "
"repalettization caused by slight differences in coverage "
"between egg files. For instance, say file a.egg references a "
"texture with a coverage of 0.91, and then later file b.egg "
"is discovered to reference the same texture with a coverage of "
"0.92. If the texture was already palettized with the original "
"coverage of 0.91, it must now be moved in the palette.\n\n"
"Rounding the coverage area up to some fixed unit reduces this "
"problem. For instance, if you specified a value 0.5 for "
"fraction in the above command, it would round both of these "
"values up to the next half-unit, or 1.0.\n\n"
"The second number is a fuzz factor, and should be a small "
"number; if the coverage area is just slightly larger than "
"the last unit (within the fuzz factor), it is rounded down "
"instead of up. This is intended to prevent UV coordinates "
"that are just slightly out of the range [0, 1] (which happens "
"fairly often) from forcing the palettization area all the "
"way up to the next stop.\n\n"
"The default if this is unspecified is 0.1 0.01. That is, "
"round up to the next tenth, unless within a hundredth of the "
"last tenth. To disable rounding, specify ':round no'.\n\n");
show_text(" :remap (never | group | poly)", 10,
"Sometimes two different parts of an egg file may reference "
"different regions of a repeating texture. For instance, "
"group A may reference UV coordinate values ranging from (0,5) "
"to (1,6), for a coverage of 1.0, while group B references "
"values ranging from (0,2) to (1,4), for a coverage of 2.0. "
"The maximum coverage used is only 2.0, and thus the texture "
"only needs to appear in the palette once, but the total range "
"of UV's is from (0,2) to (1,6), causing an apparent coverage "
"of 4.0.\n\n"
"It's possible for egg-palettize to reduce this kind of mistake "
"by remapping both groups of UV's so that they overlap. This "
"parameter specifies how this operation should be done. If "
"the option is 'never', remapping will not be performed; if "
"'group', entire groups will be remapped as a unit, of 'poly', "
"individual polygons within a group may be remapped. This last "
"option provides the greatest minimization of UV coverage, "
"but possibly at the expense of triangle strips in the resulting "
"model (since some vertices can no longer be shared).\n\n");
show_text(" :imagetype type[,alpha_type]", 10,
"This specifies the default type of image file that should be "
"generated for each palette image and for each unplaced texture "
@ -357,9 +406,10 @@ describe_input_file() {
"assigned to one of this group's dependent groups, it will "
"be considered to be assigned to this group.\n\n");
nout <<
"Comments may appear freely throughout the file, and are set off by a "
"hash mark (#).\n";
"hash mark (#).\n\n";
}

12
pandatool/src/egg-palettize/imageFile.cxx
View File

@ -285,12 +285,10 @@ read(PNMImage &image) const {
// Access: Public
// Description: Writes out the image in the indicated PNMImage to the
// _filename and/or _alpha_filename. Returns true on
// success, false on failure. Warning: this may change
// the PNMImage. In particular, it may remove the alpha
// channel.
// success, false on failure.
////////////////////////////////////////////////////////////////////
bool ImageFile::
write(PNMImage &image) const {
write(const PNMImage &image) const {
nassertr(!_filename.empty(), false);
if (!image.has_alpha() ||
@ -317,13 +315,15 @@ write(PNMImage &image) const {
}
}
image.remove_alpha();
PNMImage image_copy(image);
image_copy.remove_alpha();
nout << "Writing " << FilenameUnifier::make_user_filename(_filename) << "\n";
_filename.make_dir();
if (!image.write(_filename, _properties._color_type)) {
if (!image_copy.write(_filename, _properties._color_type)) {
nout << "Unable to write.\n";
return false;
}
nout << "Writing " << FilenameUnifier::make_user_filename(_alpha_filename) << "\n";
_alpha_filename.make_dir();
if (!alpha_image.write(_alpha_filename, _properties._alpha_type)) {

2
pandatool/src/egg-palettize/imageFile.h
View File

@ -46,7 +46,7 @@ public:
bool exists() const;
bool read(PNMImage &image) const;
bool write(PNMImage &image) const;
bool write(const PNMImage &image) const;
void unlink();
void update_egg_tex(EggTexture *egg_tex) const;