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panda3d/panda/src/egg/eggGroup.cxx
David Rose 2536db25f4 add CollisionSolid::set_effective_normal
2003-11-11 05:24:56 +00:00

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// Filename: eggGroup.cxx
// Created by: drose (16Jan99)
//
////////////////////////////////////////////////////////////////////
//
// 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 "eggGroup.h"
#include "eggMiscFuncs.h"
#include "eggVertexPool.h"
#include "eggBin.h"
#include "lexerDefs.h"
#include "indent.h"
#include "string_utils.h"
#include "lmatrix.h"
TypeHandle EggGroup::_type_handle;
////////////////////////////////////////////////////////////////////
// Function: EggGroup::Constructor
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
EggGroup::
EggGroup(const string &name) : EggGroupNode(name) {
_flags = 0;
_flags2 = 0;
_fps = 0.0;
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::Copy Constructor
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
EggGroup::
EggGroup(const EggGroup &copy) {
(*this) = copy;
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::Copy assignment operator
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
EggGroup &EggGroup::
operator = (const EggGroup &copy) {
EggTransform3d::operator = (copy);
_flags = copy._flags;
_flags2 = copy._flags2;
_object_types = copy._object_types;
_collision_name = copy._collision_name;
_fps = copy._fps;
_tag_data = copy._tag_data;
unref_all_vertices();
_vref = copy._vref;
// We must walk through the vertex ref list, and flag each vertex as
// now reffed by this group.
VertexRef::iterator vri;
for (vri = _vref.begin(); vri != _vref.end(); ++vri) {
EggVertex *vert = (*vri).first;
bool inserted = vert->_gref.insert(this).second;
// Did the group not exist previously in the vertex's gref list?
// If it was there already, we must be out of sync between
// vertices and groups.
nassertr(inserted, *this);
}
// These must be down here, because the EggNode assignment operator
// will force an update_under(). Therefore, we can't call it until
// all the attributes that affect adjust_under() are in place.
EggGroupNode::operator = (copy);
EggRenderMode::operator = (copy);
return *this;
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::Destructor
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
EggGroup::
~EggGroup() {
unref_all_vertices();
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::set_group_type
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
void EggGroup::
set_group_type(GroupType type) {
if (type != get_group_type()) {
// Make sure the user didn't give us any stray bits.
nassertv((type & ~F_group_type)==0);
_flags = (_flags & ~F_group_type) | type;
// Now we might have changed the type to or from an instance node,
// so we have to recompute the under_flags.
update_under(0);
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::has_object_type
// Access: Public
// Description: Returns true if the indicated object type has been
// added to the group, or false otherwise.
////////////////////////////////////////////////////////////////////
bool EggGroup::
has_object_type(const string &object_type) const {
vector_string::const_iterator oi;
for (oi = _object_types.begin(); oi != _object_types.end(); ++oi) {
if (cmp_nocase_uh((*oi), object_type) == 0) {
return true;
}
}
return false;
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::remove_object_type
// Access: Public
// Description: Removes the first instance of the indicated object
// type from the group if it is present. Returns true
// if the object type was found and removed, false
// otherwise.
////////////////////////////////////////////////////////////////////
bool EggGroup::
remove_object_type(const string &object_type) {
vector_string::iterator oi;
for (oi = _object_types.begin(); oi != _object_types.end(); ++oi) {
if (cmp_nocase_uh((*oi), object_type) == 0) {
_object_types.erase(oi);
return true;
}
}
return false;
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::write
// Access: Public, Virtual
// Description: Writes the group and all of its children to the
// indicated output stream in Egg format.
////////////////////////////////////////////////////////////////////
void EggGroup::
write(ostream &out, int indent_level) const {
test_under_integrity();
switch (get_group_type()) {
case GT_group:
write_header(out, indent_level, "<Group>");
break;
case GT_instance:
write_header(out, indent_level, "<Instance>");
break;
case GT_joint:
write_header(out, indent_level, "<Joint>");
break;
default:
// invalid group type
nassertv(false);
}
if (is_of_type(EggBin::get_class_type())) {
indent(out, indent_level + 2)
<< "// Bin " << DCAST(EggBin, this)->get_bin_number() << "\n";
}
if (has_lod()) {
get_lod().write(out, indent_level + 2);
}
write_billboard_flags(out, indent_level + 2);
write_collide_flags(out, indent_level + 2);
write_model_flags(out, indent_level + 2);
write_switch_flags(out, indent_level + 2);
if (has_transform()) {
EggTransform3d::write(out, indent_level + 2);
}
write_object_types(out, indent_level + 2);
write_decal_flags(out, indent_level + 2);
write_tags(out, indent_level + 2);
write_render_mode(out, indent_level + 2);
// We have to write the children nodes before we write the vertex
// references, since we might be referencing a vertex that's defined
// in one of those children nodes!
EggGroupNode::write(out, indent_level + 2);
write_vertex_ref(out, indent_level + 2);
indent(out, indent_level) << "}\n";
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::write_billboard_flags
// Access: Public
// Description: Writes just the <Billboard> entry and related fields to
// the indicated ostream.
////////////////////////////////////////////////////////////////////
void EggGroup::
write_billboard_flags(ostream &out, int indent_level) const {
if (get_billboard_type() != BT_none) {
indent(out, indent_level)
<< "<Billboard> { " << get_billboard_type() << " }\n";
}
if (has_billboard_center()) {
indent(out, indent_level)
<< "<BillboardCenter> { " << get_billboard_center() << " }\n";
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::write_collide_flags
// Access: Public
// Description: Writes just the <Collide> entry and related fields to
// the indicated ostream.
////////////////////////////////////////////////////////////////////
void EggGroup::
write_collide_flags(ostream &out, int indent_level) const {
if (get_cs_type() != CST_none) {
indent(out, indent_level) << "<Collide> ";
if (has_collision_name()) {
enquote_string(out, get_collision_name()) << " ";
}
out << "{ " << get_cs_type();
if (get_collide_flags() != CF_none) {
out << " " << get_collide_flags();
}
out << " }\n";
}
if (has_collide_mask()) {
indent(out, indent_level)
<< "<Scalar> collide-mask { 0x";
get_collide_mask().output_hex(out, 0);
out << " }\n";
}
if (has_from_collide_mask()) {
indent(out, indent_level)
<< "<Scalar> from-collide-mask { 0x";
get_from_collide_mask().output_hex(out, 0);
out << " }\n";
}
if (has_into_collide_mask()) {
indent(out, indent_level)
<< "<Scalar> into-collide-mask { 0x";
get_into_collide_mask().output_hex(out, 0);
out << " }\n";
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::write_model_flags
// Access: Public
// Description: Writes the <Model> flag and related flags to the
// indicated ostream.
////////////////////////////////////////////////////////////////////
void EggGroup::
write_model_flags(ostream &out, int indent_level) const {
if (get_dcs_type() != DC_none) {
indent(out, indent_level)
<< "<DCS> { " << get_dcs_type() << " }\n";
}
if (get_dart_type() != DT_none) {
indent(out, indent_level)
<< "<Dart> { " << get_dart_type() << " }\n";
}
if (get_model_flag()) {
indent(out, indent_level) << "<Model> { 1 }\n";
}
if (get_texlist_flag()) {
indent(out, indent_level) << "<TexList> { 1 }\n";
}
if (get_direct_flag()) {
indent(out, indent_level) << "<Scalar> direct { 1 }\n";
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::write_switch_flags
// Access: Public
// Description: Writes the <Switch> flag and related flags to the
// indicated ostream.
////////////////////////////////////////////////////////////////////
void EggGroup::
write_switch_flags(ostream &out, int indent_level) const {
if (get_switch_flag()) {
indent(out, indent_level) << "<Switch> { 1 }\n";
if (get_switch_fps() != 0.0) {
indent(out, indent_level)
<< "<Scalar> fps { " << get_switch_fps() << " }\n";
}
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::write_object_types
// Access: Public
// Description: Writes just the <ObjectTypes> entries, if any, to the
// indicated ostream.
////////////////////////////////////////////////////////////////////
void EggGroup::
write_object_types(ostream &out, int indent_level) const {
vector_string::const_iterator oi;
for (oi = _object_types.begin(); oi != _object_types.end(); ++oi) {
indent(out, indent_level)
<< "<ObjectType> { ";
enquote_string(out, (*oi)) << " }\n";
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::write_decal_flags
// Access: Public
// Description: Writes the flags related to decalling, if any.
////////////////////////////////////////////////////////////////////
void EggGroup::
write_decal_flags(ostream &out, int indent_level) const {
if (get_decal_flag()) {
indent(out, indent_level) << "<Scalar> decal { 1 }\n";
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::write_tags
// Access: Public
// Description: Writes just the <Tag> entries, if any, to the
// indicated ostream.
////////////////////////////////////////////////////////////////////
void EggGroup::
write_tags(ostream &out, int indent_level) const {
TagData::const_iterator ti;
for (ti = _tag_data.begin(); ti != _tag_data.end(); ++ti) {
const string &key = (*ti).first;
const string &value = (*ti).second;
indent(out, indent_level) << "<Tag> ";
enquote_string(out, key) << " {\n";
enquote_string(out, value, indent_level + 2) << "\n";
indent(out, indent_level) << "}\n";
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::write_render_mode
// Access: Public
// Description: Writes the flags inherited from EggRenderMode and
// similar flags that control obscure render effects.
////////////////////////////////////////////////////////////////////
void EggGroup::
write_render_mode(ostream &out, int indent_level) const {
EggRenderMode::write(out, indent_level);
if (get_nofog_flag()) {
indent(out, indent_level) << "<Scalar> no-fog { 1 }\n";
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::is_joint
// Access: Public, Virtual
// Description: Returns true if this particular node represents a
// <Joint> entry or not. This is a handy thing to know
// since Joints are sorted to the end of their sibling
// list when writing an egg file. See
// EggGroupNode::write().
////////////////////////////////////////////////////////////////////
bool EggGroup::
is_joint() const {
return (get_group_type() == GT_joint);
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::determine_alpha_mode
// Access: Public, Virtual
// Description: Walks back up the hierarchy, looking for an EggGroup
// or EggPrimitive or some such object at this level or
// above this group that has an alpha_mode other than
// AM_unspecified. Returns a valid EggRenderMode pointer
// if one is found, or NULL otherwise.
////////////////////////////////////////////////////////////////////
EggRenderMode *EggGroup::
determine_alpha_mode() {
if (get_alpha_mode() != AM_unspecified) {
return this;
}
return EggGroupNode::determine_alpha_mode();
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::determine_depth_write_mode
// Access: Public, Virtual
// Description: Walks back up the hierarchy, looking for an EggGroup
// or EggPrimitive or some such object at this level or
// above this group that has a depth_write_mode other
// than DWM_unspecified. Returns a valid EggRenderMode
// pointer if one is found, or NULL otherwise.
////////////////////////////////////////////////////////////////////
EggRenderMode *EggGroup::
determine_depth_write_mode() {
if (get_depth_write_mode() != DWM_unspecified) {
return this;
}
return EggGroupNode::determine_depth_write_mode();
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::determine_depth_test_mode
// Access: Public, Virtual
// Description: Walks back up the hierarchy, looking for an EggGroup
// or EggPrimitive or some such object at this level or
// above this group that has a depth_test_mode other
// than DTM_unspecified. Returns a valid EggRenderMode
// pointer if one is found, or NULL otherwise.
////////////////////////////////////////////////////////////////////
EggRenderMode *EggGroup::
determine_depth_test_mode() {
if (get_depth_test_mode() != DTM_unspecified) {
return this;
}
return EggGroupNode::determine_depth_test_mode();
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::determine_visibility_mode
// Access: Public, Virtual
// Description: Walks back up the hierarchy, looking for an EggGroup
// or EggPrimitive or some such object at this level or
// above this group that has a visibility_mode other
// than VM_unspecified. Returns a valid EggRenderMode
// pointer if one is found, or NULL otherwise.
////////////////////////////////////////////////////////////////////
EggRenderMode *EggGroup::
determine_visibility_mode() {
if (get_visibility_mode() != VM_unspecified) {
return this;
}
return EggGroupNode::determine_visibility_mode();
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::determine_draw_order
// Access: Public, Virtual
// Description: Walks back up the hierarchy, looking for an EggGroup
// or EggPrimitive or some such object at this level or
// above this group that has a draw_order specified.
// Returns a valid EggRenderMode pointer if one is found,
// or NULL otherwise.
////////////////////////////////////////////////////////////////////
EggRenderMode *EggGroup::
determine_draw_order() {
if (has_draw_order()) {
return this;
}
return EggGroupNode::determine_draw_order();
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::determine_bin
// Access: Public, Virtual
// Description: Walks back up the hierarchy, looking for an EggGroup
// or EggPrimitive or some such object at this level or
// above this group that has a bin specified. Returns a
// valid EggRenderMode pointer if one is found, or NULL
// otherwise.
////////////////////////////////////////////////////////////////////
EggRenderMode *EggGroup::
determine_bin() {
if (has_bin()) {
return this;
}
return EggGroupNode::determine_bin();
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::ref_vertex
// Access: Public
// Description: Adds the vertex to the set of those referenced by the
// group, at the indicated membership level. If the
// vertex is already being referenced, increases the
// membership amount by the indicated amount.
////////////////////////////////////////////////////////////////////
void EggGroup::
ref_vertex(EggVertex *vert, double membership) {
VertexRef::iterator vri = _vref.find(vert);
if (vri != _vref.end()) {
// The vertex was already being reffed; increment its membership
// amount.
(*vri).second += membership;
// If that takes us down to zero, go ahead and unref the vertex.
if ((*vri).second == 0.0) {
unref_vertex(vert);
}
} else {
// The vertex was not already reffed; ref it.
if (membership != 0.0) {
_vref[vert] = membership;
bool inserted = vert->_gref.insert(this).second;
// Did the group not exist previously in the vertex's gref list?
// If it was there already, we must be out of sync between
// vertices and groups.
nassertv(inserted);
}
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::unref_vertex
// Access: Public
// Description: Removes the vertex from the set of those referenced
// by the group. Does nothing if the vertex is not
// already reffed.
////////////////////////////////////////////////////////////////////
void EggGroup::
unref_vertex(EggVertex *vert) {
VertexRef::iterator vri = _vref.find(vert);
if (vri != _vref.end()) {
_vref.erase(vri);
int count = vert->_gref.erase(this);
// Did the group exist in the vertex's gref list? If it didn't,
// we must be out of sync between vertices and groups.
nassertv(count == 1);
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::unref_all_vertices
// Access: Public
// Description: Removes all vertices from the reference list.
////////////////////////////////////////////////////////////////////
void EggGroup::
unref_all_vertices() {
// We must walk through the vertex ref list, and flag each vertex as
// unreffed in its own structure.
VertexRef::iterator vri;
for (vri = _vref.begin(); vri != _vref.end(); ++vri) {
EggVertex *vert = (*vri).first;
int count = vert->_gref.erase(this);
// Did the group exist in the vertex's gref list? If it didn't,
// we must be out of sync between vertices and groups.
nassertv(count == 1);
}
_vref.clear();
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::get_vertex_membership
// Access: Public
// Description: Returns the amount of membership of the indicated
// vertex in this group. If the vertex is not reffed by
// the group, returns 0.
////////////////////////////////////////////////////////////////////
double EggGroup::
get_vertex_membership(const EggVertex *vert) const {
VertexRef::const_iterator vri = _vref.find((EggVertex *)vert);
if (vri != _vref.end()) {
return (*vri).second;
} else {
return 0.0;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::set_vertex_membership
// Access: Public
// Description: Explicitly sets the net membership of the indicated
// vertex in this group to the given value.
////////////////////////////////////////////////////////////////////
void EggGroup::
set_vertex_membership(EggVertex *vert, double membership) {
if (membership == 0.0) {
unref_vertex(vert);
return;
}
VertexRef::iterator vri = _vref.find(vert);
if (vri != _vref.end()) {
// The vertex was already being reffed; just change its membership
// amount.
(*vri).second = membership;
} else {
// The vertex was not already reffed; ref it.
_vref[vert] = membership;
bool inserted = vert->_gref.insert(this).second;
// Did the group not exist previously in the vertex's gref list?
// If it was there already, we must be out of sync between
// vertices and groups.
nassertv(inserted);
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::steal_vrefs
// Access: Public
// Description: Moves all of the vertex references from the indicated
// other group into this one. If a given vertex was
// previously shared by both groups, the relative
// memberships will be summed.
////////////////////////////////////////////////////////////////////
void EggGroup::
steal_vrefs(EggGroup *other) {
nassertv(other != this);
VertexRef::const_iterator vri;
for (vri = other->vref_begin(); vri != other->vref_end(); ++vri) {
EggVertex *vert = (*vri).first;
double membership = (*vri).second;
ref_vertex(vert, membership);
}
other->unref_all_vertices();
}
#ifndef NDEBUG
////////////////////////////////////////////////////////////////////
// Function: EggGroup::test_vref_integrity
// Access: Public
// Description: Verifies that each vertex in the group exists and
// that it knows it is referenced by the group.
////////////////////////////////////////////////////////////////////
void EggGroup::
test_vref_integrity() const {
test_ref_count_integrity();
VertexRef::const_iterator vri;
for (vri = vref_begin(); vri != vref_end(); ++vri) {
const EggVertex *vert = (*vri).first;
vert->test_ref_count_integrity();
nassertv(vert->has_gref(this));
}
}
#endif // NDEBUG
////////////////////////////////////////////////////////////////////
// Function: EggGroup::string_group_type
// Access: Public, Static
// Description: Returns the GroupType value associated with the given
// string representation, or GT_invalid if the string
// does not match any known GroupType value.
////////////////////////////////////////////////////////////////////
EggGroup::GroupType EggGroup::
string_group_type(const string &string) {
if (cmp_nocase_uh(string, "group") == 0) {
return GT_group;
} else if (cmp_nocase_uh(string, "instance") == 0) {
return GT_instance;
} else if (cmp_nocase_uh(string, "joint") == 0) {
return GT_joint;
} else {
return GT_invalid;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::string_dart_type
// Access: Public, Static
// Description: Returns the DartType value associated with the given
// string representation, or DT_none if the string
// does not match any known DartType value.
////////////////////////////////////////////////////////////////////
EggGroup::DartType EggGroup::
string_dart_type(const string &string) {
if (cmp_nocase_uh(string, "sync") == 0) {
return DT_sync;
} else if (cmp_nocase_uh(string, "nosync") == 0) {
return DT_nosync;
} else if (cmp_nocase_uh(string, "default") == 0) {
return DT_default;
} else {
return DT_none;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::string_dcs_type
// Access: Public, Static
// Description: Returns the DCSType value associated with the given
// string representation, or DC_none if the string
// does not match any known DCSType value.
////////////////////////////////////////////////////////////////////
EggGroup::DCSType EggGroup::
string_dcs_type(const string &string) {
if (cmp_nocase_uh(string, "local") == 0) {
return DC_local;
} else if (cmp_nocase_uh(string, "net") == 0) {
return DC_net;
} else if (cmp_nocase_uh(string, "default") == 0) {
return DC_default;
} else {
return DC_none;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::string_billboard_type
// Access: Public, Static
// Description: Returns the BillboardType value associated with the
// given string representation, or BT_none if the string
// does not match any known BillboardType value.
////////////////////////////////////////////////////////////////////
EggGroup::BillboardType EggGroup::
string_billboard_type(const string &string) {
if (cmp_nocase_uh(string, "axis") == 0) {
return BT_axis;
} else if (cmp_nocase_uh(string, "point_eye") == 0) {
return BT_point_camera_relative;
} else if (cmp_nocase_uh(string, "point_world") == 0) {
return BT_point_world_relative;
} else if (cmp_nocase_uh(string, "point") == 0) {
return BT_point_world_relative;
} else {
return BT_none;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::string_cs_type
// Access: Public, Static
// Description: Returns the CollisionSolidType value associated with the
// given string representation, or CST_none if the string
// does not match any known CollisionSolidType value.
////////////////////////////////////////////////////////////////////
EggGroup::CollisionSolidType EggGroup::
string_cs_type(const string &string) {
if (cmp_nocase_uh(string, "plane") == 0) {
return CST_plane;
} else if (cmp_nocase_uh(string, "polygon") == 0) {
return CST_polygon;
} else if (cmp_nocase_uh(string, "polyset") == 0) {
return CST_polyset;
} else if (cmp_nocase_uh(string, "sphere") == 0) {
return CST_sphere;
} else if (cmp_nocase_uh(string, "tube") == 0) {
return CST_tube;
} else {
return CST_none;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::string_collide_flags
// Access: Public, Static
// Description: Returns the CollideFlags value associated with the
// given string representation, or CF_none if the string
// does not match any known CollideFlags value. This
// only recognizes a single keyword; it does not attempt
// to parse a string of keywords.
////////////////////////////////////////////////////////////////////
EggGroup::CollideFlags EggGroup::
string_collide_flags(const string &string) {
if (cmp_nocase_uh(string, "intangible") == 0) {
return CF_intangible;
} else if (cmp_nocase_uh(string, "event") == 0) {
return CF_event;
} else if (cmp_nocase_uh(string, "descend") == 0) {
return CF_descend;
} else if (cmp_nocase_uh(string, "keep") == 0) {
return CF_keep;
} else if (cmp_nocase_uh(string, "solid") == 0) {
return CF_solid;
} else if (cmp_nocase_uh(string, "center") == 0) {
return CF_center;
} else if (cmp_nocase_uh(string, "turnstile") == 0) {
return CF_turnstile;
} else if (cmp_nocase_uh(string, "level") == 0) {
return CF_level;
} else {
return CF_none;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::write_vertex_ref
// Access: Protected
// Description: Writes out the vertex ref component of the group body
// only. This may consist of a number of <VertexRef>
// entries, each with its own membership value.
////////////////////////////////////////////////////////////////////
void EggGroup::
write_vertex_ref(ostream &out, int indent_level) const {
// We want to put the vertices together into groups first by vertex
// pool, then by membership value. Each of these groups becomes a
// separate VertexRef entry. Within each group, we'll sort the
// vertices by index number.
typedef pset<int> Indices;
typedef pmap<double, Indices> Memberships;
typedef pmap<EggVertexPool *, Memberships> Pools;
Pools _entries;
bool all_membership_one = true;
VertexRef::const_iterator vri;
for (vri = _vref.begin(); vri != _vref.end(); ++vri) {
EggVertex *vert = (*vri).first;
double membership = (*vri).second;
if (membership != 1.0) {
all_membership_one = false;
}
_entries[vert->get_pool()][membership].insert(vert->get_index());
}
// Now that we've reordered them, we can simply traverse the entries
// and write them out.
Pools::const_iterator pi;
for (pi = _entries.begin(); pi != _entries.end(); ++pi) {
EggVertexPool *pool = (*pi).first;
const Memberships &memberships = (*pi).second;
Memberships::const_iterator mi;
for (mi = memberships.begin(); mi != memberships.end(); ++mi) {
double membership = (*mi).first;
const Indices &indices = (*mi).second;
indent(out, indent_level)
<< "<VertexRef> {\n";
write_long_list(out, indent_level+2, indices.begin(), indices.end(),
"", "", 72);
// If all vrefs in this group have membership of 1, don't bother
// to write out the membership scalar.
if (!all_membership_one) {
indent(out, indent_level + 2)
<< "<Scalar> membership { " << membership << " }\n";
}
if (pool == (EggVertexPool *)NULL) {
indent(out, indent_level + 2)
<< "// Invalid NULL vertex pool.\n";
} else {
indent(out, indent_level + 2)
<< "<Ref> { " << pool->get_name() << " }\n";
}
indent(out, indent_level)
<< "}\n";
}
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::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 EggGroup::
egg_start_parse_body() {
egg_start_group_body();
return true;
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::adjust_under
// Access: Protected, Virtual
// Description: This is called within update_under() after all the
// various under settings have been inherited directly
// from the parent node. It is responsible for
// adjusting these settings to reflect states local to
// the current node; for instance, an <Instance> node
// will force the UF_under_instance bit on.
////////////////////////////////////////////////////////////////////
void EggGroup::
adjust_under() {
// If we have our own transform, it carries forward.
// As of 4/18/01, this now also affects the local_coord flag, below.
// This means that a <Transform> entry within an <Instance> node
// transforms the instance itself.
if (has_transform()) {
_under_flags |= UF_under_transform;
// Our own transform also affects our node frame.
_node_frame =
new MatrixFrame(get_transform() * get_node_frame());
_node_frame_inv =
new MatrixFrame(invert(get_node_frame()));
_vertex_to_node =
new MatrixFrame(get_vertex_frame() * get_node_frame_inv());
_node_to_vertex =
new MatrixFrame(get_node_frame() * get_vertex_frame_inv());
}
if (is_instance_type()) {
_under_flags |= UF_under_instance;
if (_under_flags & UF_under_transform) {
// If we've reached an instance node and we're under a
// transform, that means we've just defined a local coordinate
// system.
_under_flags |= UF_local_coord;
}
// An instance node means that from this point and below, vertices
// are defined relative to this node. Thus, the node frame
// becomes the vertex frame.
_vertex_frame = _node_frame;
_vertex_frame_inv = _node_frame_inv;
_vertex_to_node = NULL;
_node_to_vertex = NULL;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::r_transform
// Access: Protected, Virtual
// Description: This is called from within the egg code by
// transform(). It applies a transformation matrix
// to the current node in some sensible way, then
// continues down the tree.
//
// The first matrix is the transformation to apply; the
// second is its inverse. The third parameter is the
// coordinate system we are changing to, or CS_default
// if we are not changing coordinate systems.
////////////////////////////////////////////////////////////////////
void EggGroup::
r_transform(const LMatrix4d &mat, const LMatrix4d &inv,
CoordinateSystem to_cs) {
if (!transform_is_identity()) {
// Since we want to apply this transform to all matrices,
// including nested matrices, we can't simply premult it in and
// leave it, because that would leave the rotational component in
// the scene graph's matrix, and all nested matrices would inherit
// the same rotational component. So we have to premult and then
// postmult by the inverse to undo the rotational component each
// time.
LMatrix4d mat1 = mat;
LMatrix4d inv1 = inv;
// If we have a translation component, we should only apply
// it to the top matrix. All subsequent matrices get just the
// rotational component.
mat1.set_row(3, LVector3d(0.0, 0.0, 0.0));
inv1.set_row(3, LVector3d(0.0, 0.0, 0.0));
internal_set_transform(inv1 * get_transform() * mat);
EggGroupNode::r_transform(mat1, inv1, to_cs);
} else {
EggGroupNode::r_transform(mat, inv, to_cs);
}
// Convert the LOD description too.
if (has_lod()) {
_lod->transform(mat);
}
if (has_billboard_center()) {
_billboard_center = _billboard_center * mat;
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::r_flatten_transforms
// Access: Protected, Virtual
// Description: The recursive implementation of flatten_transforms().
////////////////////////////////////////////////////////////////////
void EggGroup::
r_flatten_transforms() {
EggGroupNode::r_flatten_transforms();
if (is_local_coord()) {
LMatrix4d mat = get_vertex_frame();
if (has_lod()) {
_lod->transform(mat);
}
if (get_billboard_type() != BT_none && !has_billboard_center()) {
// If we had a billboard without an explicit center, it was an
// implicit instance. Now it's not any more.
set_billboard_center(LPoint3d(0.0, 0.0, 0.0) * mat);
} else if (has_billboard_center()) {
_billboard_center = _billboard_center * mat;
}
}
if (get_group_type() == GT_instance) {
set_group_type(GT_group);
}
if (get_group_type() != GT_joint) {
internal_clear_transform();
}
}
////////////////////////////////////////////////////////////////////
// Function: EggGroup::transform_changed
// Access: Protected, Virtual
// Description: This virtual method is inherited by EggTransform3d;
// it is called whenever the transform is changed.
////////////////////////////////////////////////////////////////////
void EggGroup::
transform_changed() {
// Recompute all of the cached transforms at this node and below.
// We should probably make this smarter and do lazy evaluation of
// these transforms, rather than having to recompute the whole tree
// with every change to a parent node's transform.
update_under(0);
}
////////////////////////////////////////////////////////////////////
// Function: GroupType output operator
// Description:
////////////////////////////////////////////////////////////////////
ostream &operator << (ostream &out, EggGroup::GroupType t) {
switch (t) {
case EggGroup::GT_invalid:
return out << "invalid group";
case EggGroup::GT_group:
return out << "group";
case EggGroup::GT_instance:
return out << "instance";
case EggGroup::GT_joint:
return out << "joint";
}
nassertr(false, out);
return out << "(**invalid**)";
}
////////////////////////////////////////////////////////////////////
// Function: DartType output operator
// Description:
////////////////////////////////////////////////////////////////////
ostream &operator << (ostream &out, EggGroup::DartType t) {
switch (t) {
case EggGroup::DT_none:
return out << "none";
case EggGroup::DT_sync:
return out << "sync";
case EggGroup::DT_nosync:
return out << "nosync";
case EggGroup::DT_default:
return out << "1";
}
nassertr(false, out);
return out << "(**invalid**)";
}
////////////////////////////////////////////////////////////////////
// Function: DCSType output operator
// Description:
////////////////////////////////////////////////////////////////////
ostream &operator << (ostream &out, EggGroup::DCSType t) {
switch (t) {
case EggGroup::DC_none:
return out << "none";
case EggGroup::DC_local:
return out << "local";
case EggGroup::DC_net:
return out << "net";
case EggGroup::DC_default:
return out << "1";
}
nassertr(false, out);
return out << "(**invalid**)";
}
////////////////////////////////////////////////////////////////////
// Function: BillboardType output operator
// Description:
////////////////////////////////////////////////////////////////////
ostream &operator << (ostream &out, EggGroup::BillboardType t) {
switch (t) {
case EggGroup::BT_none:
return out << "none";
case EggGroup::BT_axis:
return out << "axis";
case EggGroup::BT_point_camera_relative:
return out << "point_eye";
case EggGroup::BT_point_world_relative:
return out << "point_world";
}
nassertr(false, out);
return out << "(**invalid**)";
}
////////////////////////////////////////////////////////////////////
// Function: CollisionSolidType output operator
// Description:
////////////////////////////////////////////////////////////////////
ostream &operator << (ostream &out, EggGroup::CollisionSolidType t) {
switch (t) {
case EggGroup::CST_none:
return out << "None";
case EggGroup::CST_plane:
return out << "Plane";
case EggGroup::CST_polygon:
return out << "Polygon";
case EggGroup::CST_polyset:
return out << "Polyset";
case EggGroup::CST_sphere:
return out << "Sphere";
case EggGroup::CST_tube:
return out << "Tube";
}
nassertr(false, out);
return out << "(**invalid**)";
}
////////////////////////////////////////////////////////////////////
// Function: CollideFlags output operator
// Description:
////////////////////////////////////////////////////////////////////
ostream &operator << (ostream &out, EggGroup::CollideFlags t) {
if (t == EggGroup::CF_none) {
return out << "none";
}
int bits = (int)t;
const char *space = "";
if (bits & EggGroup::CF_intangible) {
out << space << "intangible";
space = " ";
}
if (bits & EggGroup::CF_event) {
out << space << "event";
space = " ";
}
if (bits & EggGroup::CF_descend) {
out << space << "descend";
space = " ";
}
if (bits & EggGroup::CF_keep) {
out << space << "keep";
space = " ";
}
if (bits & EggGroup::CF_solid) {
out << space << "solid";
space = " ";
}
if (bits & EggGroup::CF_center) {
out << space << "center";
space = " ";
}
if (bits & EggGroup::CF_turnstile) {
out << space << "turnstile";
space = " ";
}
if (bits & EggGroup::CF_level) {
out << space << "level";
space = " ";
}
return out;
}
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