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panda3d/panda/src/egg/eggTexture.cxx

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// Filename: eggTexture.cxx
// Created by: drose (18Jan99)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license. You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://www.panda3d.org/license.txt .
//
// To contact the maintainers of this program write to
// panda3d@yahoogroups.com .
//
////////////////////////////////////////////////////////////////////
#include "eggTexture.h"
#include "eggMiscFuncs.h"
#include "lexerDefs.h"
#include <indent.h>
#include <string_utils.h>
TypeHandle EggTexture::_type_handle;
////////////////////////////////////////////////////////////////////
// Function: EggTexture::Constructor
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
EggTexture::
EggTexture(const string &tref_name, const string &filename)
: EggFilenameNode(tref_name, filename)
{
_format = F_unspecified;
_wrap_mode = WM_unspecified;
_wrap_u = WM_unspecified;
_wrap_v = WM_unspecified;
_minfilter = FT_unspecified;
_magfilter = FT_unspecified;
_anisotropic_degree = 0;
_env_type = ET_unspecified;
_flags = 0;
_transform = LMatrix3d::ident_mat();
_alpha_file_channel = 0;
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::Copy constructor
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
EggTexture::
EggTexture(const EggTexture &copy) {
(*this) = copy;
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::Copy assignment operator
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
EggTexture &EggTexture::
operator = (const EggTexture &copy) {
EggFilenameNode::operator = (copy);
EggRenderMode::operator = (copy);
_format = copy._format;
_wrap_mode = copy._wrap_mode;
_wrap_u = copy._wrap_u;
_wrap_v = copy._wrap_v;
_minfilter = copy._minfilter;
_magfilter = copy._magfilter;
_anisotropic_degree = copy._anisotropic_degree;
_env_type = copy._env_type;
_flags = copy._flags;
_transform = copy._transform;
_alpha_filename = copy._alpha_filename;
_alpha_fullpath = copy._alpha_fullpath;
_alpha_file_channel = copy._alpha_file_channel;
return *this;
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::write
// Access: Public, Virtual
// Description: Writes the texture definition to the indicated output
// stream in Egg format.
////////////////////////////////////////////////////////////////////
void EggTexture::
write(ostream &out, int indent_level) const {
write_header(out, indent_level, "<Texture>");
enquote_string(out, get_filename(), indent_level + 2) << "\n";
if (has_alpha_filename()) {
indent(out, indent_level + 2)
<< "<Scalar> alpha-file { ";
enquote_string(out, get_alpha_filename());
out << " }\n";
}
if (has_alpha_file_channel()) {
indent(out, indent_level + 2)
<< "<Scalar> alpha-file-channel { "
<< get_alpha_file_channel() << " }\n";
}
if (get_format() != F_unspecified) {
indent(out, indent_level + 2)
<< "<Scalar> format { " << get_format() << " }\n";
}
if (get_wrap_mode() != WM_unspecified) {
indent(out, indent_level + 2)
<< "<Scalar> wrap { " << get_wrap_mode() << " }\n";
}
if (get_wrap_u() != WM_unspecified) {
indent(out, indent_level + 2)
<< "<Scalar> wrapu { " << get_wrap_u() << " }\n";
}
if (get_wrap_v() != WM_unspecified) {
indent(out, indent_level + 2)
<< "<Scalar> wrapv { " << get_wrap_v() << " }\n";
}
if (get_minfilter() != FT_unspecified) {
indent(out, indent_level + 2)
<< "<Scalar> minfilter { " << get_minfilter() << " }\n";
}
if (get_magfilter() != FT_unspecified) {
indent(out, indent_level + 2)
<< "<Scalar> magfilter { " << get_magfilter() << " }\n";
}
if (has_anisotropic_degree()) {
indent(out, indent_level + 2)
<< "<Scalar> anisotropic-degree { " << get_anisotropic_degree() << " }\n";
}
if (get_env_type() != ET_unspecified) {
indent(out, indent_level + 2)
<< "<Scalar> envtype { " << get_env_type() << " }\n";
}
EggRenderMode::write(out, indent_level + 2);
if (has_transform()) {
write_transform(out, _transform, indent_level + 2);
}
indent(out, indent_level) << "}\n";
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::is_equivalent_to
// Access: Public
// Description: Returns true if the two textures are equivalent in
// all relevant properties (according to eq), false
// otherwise.
//
// The Equivalence parameter, eq, should be set to the
// bitwise OR of the following properties, according to
// what you consider relevant:
//
// EggTexture::E_basename:
// The basename part of the texture filename, without
// the directory prefix *or* the filename extension.
//
// EggTexture::E_extension:
// The extension part of the texture filename.
//
// EggTexture::E_dirname:
// The directory prefix of the texture filename.
//
// EggTexture::E_complete_filename:
// The union of the above three; that is, the complete
// filename, with directory, basename, and extension.
//
// EggTexture::E_transform:
// The texture matrix.
//
// EggTexture::E_attributes:
// All remaining texture attributes (mode, mipmap,
// etc.) except TRef name.
//
// EggTexture::E_tref_name:
// The TRef name.
////////////////////////////////////////////////////////////////////
bool EggTexture::
is_equivalent_to(const EggTexture &other, int eq) const {
if ((eq & E_complete_filename) == E_complete_filename) {
if (get_filename() != other.get_filename()) {
return false;
}
} else {
const Filename &a = get_filename();
const Filename &b = other.get_filename();
if (eq & E_basename) {
if (a.get_basename_wo_extension() != b.get_basename_wo_extension()) {
return false;
}
}
if (eq & E_extension) {
if (a.get_extension() != b.get_extension()) {
return false;
}
}
if (eq & E_dirname) {
if (a.get_dirname() != b.get_dirname()) {
return false;
}
}
}
if (eq & E_transform) {
if (transform_is_identity() != other.transform_is_identity()) {
return false;
}
if (has_transform() && other.has_transform()) {
if (!_transform.almost_equal(other._transform, 0.0001)) {
return false;
}
}
}
if (eq & E_attributes) {
if (_format != other._format ||
_wrap_mode != other._wrap_mode ||
_wrap_u != other._wrap_u ||
_wrap_v != other._wrap_v ||
_minfilter != other._minfilter ||
_magfilter != other._magfilter ||
_env_type != other._env_type) {
return false;
}
if (EggRenderMode::operator != (other)) {
return false;
}
}
if (eq & E_tref_name) {
if (get_name() != other.get_name()) {
return false;
}
}
return true;
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::sorts_less_than
// Access: Public
// Description: An ordering operator to compare two textures for
// sorting order. This imposes an arbitrary ordering
// useful to identify unique textures, according to the
// indicated Equivalence factor. See
// is_equivalent_to().
////////////////////////////////////////////////////////////////////
bool EggTexture::
sorts_less_than(const EggTexture &other, int eq) const {
if ((eq & E_complete_filename) == E_complete_filename) {
if (get_filename() != other.get_filename()) {
return get_filename() < other.get_filename();
}
} else {
const Filename &a = get_filename();
const Filename &b = other.get_filename();
if (eq & E_basename) {
if (a.get_basename_wo_extension() != b.get_basename_wo_extension()) {
return a.get_basename_wo_extension() < b.get_basename_wo_extension();
}
}
if (eq & E_extension) {
if (a.get_extension() != b.get_extension()) {
return a.get_extension() < b.get_extension();
}
}
if (eq & E_dirname) {
if (a.get_dirname() != b.get_dirname()) {
return a.get_dirname() < b.get_dirname();
}
}
}
if (eq & E_transform) {
bool is_identity = transform_is_identity();
bool other_is_identity = other.transform_is_identity();
if (is_identity != other_is_identity) {
return (int)is_identity < (int)other_is_identity;
}
if (has_transform() && other.has_transform()) {
int compare = _transform.compare_to(other._transform);
if (compare != 0) {
return compare < 0;
}
}
}
if (eq & E_attributes) {
if (_format != other._format) {
return (int)_format < (int)other._format;
}
if (_wrap_mode != other._wrap_mode) {
return (int)_wrap_mode < (int)other._wrap_mode;
}
if (_wrap_u != other._wrap_u) {
return (int)_wrap_u < (int)other._wrap_u;
}
if (_wrap_v != other._wrap_v) {
return (int)_wrap_v < (int)other._wrap_v;
}
if (_minfilter != other._minfilter) {
return (int)_minfilter < (int)other._minfilter;
}
if (_magfilter != other._magfilter) {
return (int)_magfilter < (int)other._magfilter;
}
if (_anisotropic_degree != other._anisotropic_degree) {
return _anisotropic_degree < other._anisotropic_degree;
}
if (_env_type != other._env_type) {
return (int)_env_type < (int)other._env_type;
}
if (EggRenderMode::operator != (other)) {
return EggRenderMode::operator < (other);
}
}
if (eq & E_tref_name) {
if (get_name() != other.get_name()) {
return get_name() < other.get_name();
}
}
return false;
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::has_alpha_channel
// Access: Public
// Description: Given the number of color components (channels) in
// the image file as actually read from the disk, return
// true if this texture seems to have an alpha channel
// or not. This depends on the EggTexture's format as
// well as the number of channels.
////////////////////////////////////////////////////////////////////
bool EggTexture::
has_alpha_channel(int num_components) const {
switch (_format) {
case F_red:
case F_green:
case F_blue:
case F_luminance:
case F_rgb:
case F_rgb12:
case F_rgb8:
case F_rgb5:
case F_rgb332:
// These formats never use alpha, regardless of the number of
// components we have.
return false;
case F_alpha:
// This format always uses alpha.
return true;
case F_luminance_alpha:
case F_luminance_alphamask:
case F_rgba:
case F_rgbm:
case F_rgba12:
case F_rgba8:
case F_rgba4:
case F_rgba5:
case F_unspecified:
// These formats use alpha if the image had alpha.
return (num_components == 2 || num_components == 4);
}
return false;
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::string_format
// Access: Public
// Description: Returns the Format value associated with the given
// string representation, or F_unspecified if the string
// does not match any known Format value.
////////////////////////////////////////////////////////////////////
EggTexture::Format EggTexture::
string_format(const string &string) {
if (cmp_nocase_uh(string, "rgba") == 0) {
return F_rgba;
} else if (cmp_nocase_uh(string, "rgbm") == 0) {
return F_rgbm;
} else if (cmp_nocase_uh(string, "rgba12") == 0) {
return F_rgba12;
} else if (cmp_nocase_uh(string, "rgba8") == 0) {
return F_rgba8;
} else if (cmp_nocase_uh(string, "rgba4") == 0) {
return F_rgba4;
} else if (cmp_nocase_uh(string, "rgb") == 0) {
return F_rgb;
} else if (cmp_nocase_uh(string, "rgb12") == 0) {
return F_rgb12;
} else if (cmp_nocase_uh(string, "rgb8") == 0) {
return F_rgb8;
} else if (cmp_nocase_uh(string, "rgb5") == 0) {
return F_rgb5;
} else if (cmp_nocase_uh(string, "rgba5") == 0) {
return F_rgba5;
} else if (cmp_nocase_uh(string, "rgb332") == 0) {
return F_rgb332;
} else if (cmp_nocase_uh(string, "red") == 0) {
return F_red;
} else if (cmp_nocase_uh(string, "green") == 0) {
return F_green;
} else if (cmp_nocase_uh(string, "blue") == 0) {
return F_blue;
} else if (cmp_nocase_uh(string, "alpha") == 0) {
return F_alpha;
} else if (cmp_nocase_uh(string, "luminance") == 0) {
return F_luminance;
} else if (cmp_nocase_uh(string, "luminance_alpha") == 0) {
return F_luminance_alpha;
} else if (cmp_nocase_uh(string, "luminance_alphamask") == 0) {
return F_luminance_alphamask;
} else {
return F_unspecified;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::string_wrap_mode
// Access: Public
// Description: Returns the WrapMode value associated with the given
// string representation, or WM_unspecified if the string
// does not match any known WrapMode value.
////////////////////////////////////////////////////////////////////
EggTexture::WrapMode EggTexture::
string_wrap_mode(const string &string) {
if (cmp_nocase_uh(string, "repeat") == 0) {
return WM_repeat;
} else if (cmp_nocase_uh(string, "clamp") == 0) {
return WM_clamp;
} else {
return WM_unspecified;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::string_filter_type
// Access: Public
// Description: Returns the FilterType value associated with the given
// string representation, or FT_unspecified if the string
// does not match any known FilterType value.
////////////////////////////////////////////////////////////////////
EggTexture::FilterType EggTexture::
string_filter_type(const string &string) {
// Old egg filter types.
if (cmp_nocase_uh(string, "point") == 0) {
return FT_nearest;
} else if (cmp_nocase_uh(string, "linear") == 0) {
return FT_linear;
} else if (cmp_nocase_uh(string, "bilinear") == 0) {
return FT_linear;
} else if (cmp_nocase_uh(string, "trilinear") == 0) {
return FT_linear;
} else if (cmp_nocase_uh(string, "mipmap_point") == 0) {
return FT_nearest_mipmap_nearest;
} else if (cmp_nocase_uh(string, "mipmap_linear") == 0) {
return FT_nearest_mipmap_linear;
} else if (cmp_nocase_uh(string, "mipmap_bilinear") == 0) {
return FT_linear_mipmap_nearest;
} else if (cmp_nocase_uh(string, "mipmap_trilinear") == 0) {
return FT_linear_mipmap_linear;
// Current egg filter types, that match those in Texture.
} else if (cmp_nocase_uh(string, "nearest") == 0) {
return FT_nearest;
} else if (cmp_nocase_uh(string, "linear") == 0) {
return FT_linear;
} else if (cmp_nocase_uh(string, "nearest_mipmap_nearest") == 0) {
return FT_nearest_mipmap_nearest;
} else if (cmp_nocase_uh(string, "linear_mipmap_nearest") == 0) {
return FT_linear_mipmap_nearest;
} else if (cmp_nocase_uh(string, "nearest_mipmap_linear") == 0) {
return FT_nearest_mipmap_linear;
} else if (cmp_nocase_uh(string, "linear_mipmap_linear") == 0) {
return FT_linear_mipmap_linear;
} else {
return FT_unspecified;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::string_env_type
// Access: Public
// Description: Returns the EnvType value associated with the given
// string representation, or ET_unspecified if the string
// does not match any known EnvType value.
////////////////////////////////////////////////////////////////////
EggTexture::EnvType EggTexture::
string_env_type(const string &string) {
if (cmp_nocase_uh(string, "modulate") == 0) {
return ET_modulate;
} else if (cmp_nocase_uh(string, "decal") == 0) {
return ET_decal;
} else {
return ET_unspecified;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggTexture::egg_start_parse_body
// Access: Protected, Virtual
// Description: This function is called within parse_egg(). It
// should call the appropriate function on the lexer to
// initialize the parser into the state associated with
// this object. If the object cannot be parsed into
// directly, it should return false.
////////////////////////////////////////////////////////////////////
bool EggTexture::
egg_start_parse_body() {
egg_start_texture_body();
return true;
}
////////////////////////////////////////////////////////////////////
// Function: Format output operator
// Description:
////////////////////////////////////////////////////////////////////
ostream &operator << (ostream &out, EggTexture::Format format) {
switch (format) {
case EggTexture::F_unspecified:
return out << "unspecified";
case EggTexture::F_rgba:
return out << "rgba";
case EggTexture::F_rgbm:
return out << "rgbm";
case EggTexture::F_rgba12:
return out << "rgba12";
case EggTexture::F_rgba8:
return out << "rgba8";
case EggTexture::F_rgba4:
return out << "rgba4";
case EggTexture::F_rgb:
return out << "rgb";
case EggTexture::F_rgb12:
return out << "rgb12";
case EggTexture::F_rgb8:
return out << "rgb8";
case EggTexture::F_rgb5:
return out << "rgb5";
case EggTexture::F_rgba5:
return out << "rgba5";
case EggTexture::F_rgb332:
return out << "rgb332";
case EggTexture::F_red:
return out << "red";
case EggTexture::F_green:
return out << "green";
case EggTexture::F_blue:
return out << "blue";
case EggTexture::F_alpha:
return out << "alpha";
case EggTexture::F_luminance:
return out << "luminance";
case EggTexture::F_luminance_alpha:
return out << "luminance_alpha";
case EggTexture::F_luminance_alphamask:
return out << "luminance_alphamask";
}
nassertr(false, out);
return out << "(**invalid**)";
}
////////////////////////////////////////////////////////////////////
// Function: WrapMode output operator
// Description:
////////////////////////////////////////////////////////////////////
ostream &operator << (ostream &out, EggTexture::WrapMode mode) {
switch (mode) {
case EggTexture::WM_unspecified:
return out << "unspecified";
case EggTexture::WM_repeat:
return out << "repeat";
case EggTexture::WM_clamp:
return out << "clamp";
}
nassertr(false, out);
return out << "(**invalid**)";
}
////////////////////////////////////////////////////////////////////
// Function: FilterType output operator
// Description:
////////////////////////////////////////////////////////////////////
ostream &operator << (ostream &out, EggTexture::FilterType type) {
switch (type) {
case EggTexture::FT_unspecified:
return out << "unspecified";
case EggTexture::FT_nearest:
return out << "nearest";
case EggTexture::FT_linear:
return out << "linear";
case EggTexture::FT_nearest_mipmap_nearest:
return out << "nearest_mipmap_nearest";
case EggTexture::FT_linear_mipmap_nearest:
return out << "linear_mipmap_nearest";
case EggTexture::FT_nearest_mipmap_linear:
return out << "nearest_mipmap_linear";
case EggTexture::FT_linear_mipmap_linear:
return out << "linear_mipmap_linear";
}
nassertr(false, out);
return out << "(**invalid**)";
}
////////////////////////////////////////////////////////////////////
// Function: EnvType output operator
// Description:
////////////////////////////////////////////////////////////////////
ostream &operator << (ostream &out, EggTexture::EnvType type) {
switch (type) {
case EggTexture::ET_unspecified:
return out << "unspecified";
case EggTexture::ET_modulate:
return out << "modulate";
case EggTexture::ET_decal:
return out << "decal";
}
nassertr(false, out);
return out << "(**invalid**)";
}
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