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open_toontown_panda3d/panda/src/text/textNode.cxx

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// Filename: textNode.cxx
// Created by: drose (13Mar02)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) Carnegie Mellon University. All rights reserved.
//
// All use of this software is subject to the terms of the revised BSD
// license. You should have received a copy of this license along
// with this source code in a file named "LICENSE."
//
////////////////////////////////////////////////////////////////////
#include "textNode.h"
#include "textGlyph.h"
#include "stringDecoder.h"
#include "config_text.h"
#include "textAssembler.h"
#include "compose_matrix.h"
#include "geom.h"
#include "geomLinestrips.h"
#include "geomPoints.h"
#include "geomTristrips.h"
#include "geomVertexWriter.h"
#include "geomNode.h"
#include "pnotify.h"
#include "transformState.h"
#include "colorAttrib.h"
#include "colorScaleAttrib.h"
#include "cullBinAttrib.h"
#include "textureAttrib.h"
#include "transparencyAttrib.h"
#include "sceneGraphReducer.h"
#include "indent.h"
#include "cullTraverser.h"
#include "cullTraverserData.h"
#include "geometricBoundingVolume.h"
#include "accumulatedAttribs.h"
#include "renderState.h"
#include "renderModeAttrib.h"
#include "decalEffect.h"
#include "dcast.h"
#include "bamFile.h"
#include "zStream.h"
#include "pStatCollector.h"
#include "pStatTimer.h"
#include "boundingSphere.h"
#include <stdio.h>
TypeHandle TextNode::_type_handle;
PStatCollector TextNode::_text_generate_pcollector("*:Generate Text");
////////////////////////////////////////////////////////////////////
// Function: TextNode::Constructor
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
TextNode::
TextNode(const string &name) : PandaNode(name) {
set_cull_callback();
_flags = 0;
_max_rows = 0;
_usage_hint = GeomEnums::UH_static;
_flatten_flags = 0;
if (text_flatten) {
_flatten_flags |= FF_strong;
}
if (text_dynamic_merge) {
_flatten_flags |= FF_dynamic_merge;
}
if (text_small_caps) {
set_small_caps(true);
}
_frame_color.set(1.0f, 1.0f, 1.0f, 1.0f);
_card_color.set(1.0f, 1.0f, 1.0f, 1.0f);
_frame_width = 1.0f;
_frame_ul.set(0.0f, 0.0f);
_frame_lr.set(0.0f, 0.0f);
_card_ul.set(0.0f, 0.0f);
_card_lr.set(0.0f, 0.0f);
_transform = LMatrix4::ident_mat();
_coordinate_system = CS_default;
_ul3d.set(0.0f, 0.0f, 0.0f);
_lr3d.set(0.0f, 0.0f, 0.0f);
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::Copy Constructor
// Access: Published
// Description: It's sort of a copy constructor: it copies the
// indicated TextProperties, without copying a complete
// TextNode.
////////////////////////////////////////////////////////////////////
TextNode::
TextNode(const string &name, const TextProperties &copy) :
PandaNode(name), TextProperties(copy)
{
_flags = 0;
_max_rows = 0;
_usage_hint = GeomEnums::UH_static;
_frame_color.set(1.0f, 1.0f, 1.0f, 1.0f);
_card_color.set(1.0f, 1.0f, 1.0f, 1.0f);
_frame_width = 1.0f;
_frame_ul.set(0.0f, 0.0f);
_frame_lr.set(0.0f, 0.0f);
_card_ul.set(0.0f, 0.0f);
_card_lr.set(0.0f, 0.0f);
_transform = LMatrix4::ident_mat();
_coordinate_system = CS_default;
_ul3d.set(0.0f, 0.0f, 0.0f);
_lr3d.set(0.0f, 0.0f, 0.0f);
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::Copy Constructor
// Access: Published
// Description: OK, this is a true copy constructor.
////////////////////////////////////////////////////////////////////
TextNode::
TextNode(const TextNode &copy) :
PandaNode(copy),
TextEncoder(copy),
TextProperties(copy),
_card_texture(copy._card_texture),
_frame_color(copy._frame_color),
_card_color(copy._card_color),
_flags(copy._flags),
_max_rows(copy._max_rows),
_usage_hint(GeomEnums::UH_static),
_frame_width(copy._frame_width),
_card_border_size(copy._card_border_size),
_card_border_uv_portion(copy._card_border_uv_portion),
_frame_ul(copy._frame_ul),
_frame_lr(copy._frame_lr),
_card_ul(copy._card_ul),
_card_lr(copy._card_lr),
_transform(copy._transform),
_coordinate_system(copy._coordinate_system),
_ul3d(copy._ul3d),
_lr3d(copy._lr3d)
{
invalidate_with_measure();
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::make_copy
// Access: Protected, Virtual
// Description: Returns a newly-allocated Node that is a shallow copy
// of this one. It will be a different Node pointer,
// but its internal data may or may not be shared with
// that of the original Node.
////////////////////////////////////////////////////////////////////
PandaNode *TextNode::
make_copy() const {
return new TextNode(*this);
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::Destructor
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
TextNode::
~TextNode() {
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::calc_width
// Access: Published
// Description: Returns the width of a single character of the font,
// or 0.0 if the character is not known. This may be a
// wide character (greater than 255).
////////////////////////////////////////////////////////////////////
PN_stdfloat TextNode::
calc_width(wchar_t character) const {
TextFont *font = get_font();
if (font == (TextFont *)NULL) {
return 0.0f;
}
return TextAssembler::calc_width(character, *this);
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::has_exact_character
// Access: Published
// Description: Returns true if the named character exists in the
// font exactly as named, false otherwise. Note that
// because Panda can assemble glyphs together
// automatically using cheesy accent marks, this is not
// a reliable indicator of whether a suitable glyph can
// be rendered for the character. For that, use
// has_character() instead.
//
// This returns true for whitespace and Unicode
// whitespace characters (if they exist in the font),
// but returns false for characters that would render
// with the "invalid glyph". It also returns false for
// characters that would be synthesized within Panda,
// but see has_character().
////////////////////////////////////////////////////////////////////
bool TextNode::
has_exact_character(wchar_t character) const {
TextFont *font = get_font();
if (font == (TextFont *)NULL) {
return false;
}
return TextAssembler::has_exact_character(character, *this);
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::has_character
// Access: Published
// Description: Returns true if the named character exists in the
// font or can be synthesized by Panda, false otherwise.
// (Panda can synthesize some accented characters by
// combining similar-looking glyphs from the font.)
//
// This returns true for whitespace and Unicode
// whitespace characters (if they exist in the font),
// but returns false for characters that would render
// with the "invalid glyph".
////////////////////////////////////////////////////////////////////
bool TextNode::
has_character(wchar_t character) const {
TextFont *font = get_font();
if (font == (TextFont *)NULL) {
return false;
}
return TextAssembler::has_character(character, *this);
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::is_whitespace
// Access: Published
// Description: Returns true if the indicated character represents
// whitespace in the font, or false if anything visible
// will be rendered for it.
//
// This returns true for whitespace and Unicode
// whitespace characters (if they exist in the font),
// and returns false for any other characters, including
// characters that do not exist in the font (these would
// be rendered with the "invalid glyph", which is
// visible).
//
// Note that this function can be reliably used to
// identify Unicode whitespace characters only if the
// font has all of the whitespace characters defined.
// It will return false for any character not in the
// font, even if it is an official Unicode whitespace
// character.
////////////////////////////////////////////////////////////////////
bool TextNode::
is_whitespace(wchar_t character) const {
TextFont *font = get_font();
if (font == (TextFont *)NULL) {
return false;
}
return TextAssembler::is_whitespace(character, *this);
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::calc_width
// Access: Published
// Description: Returns the width of a line of text of arbitrary
// characters. The line should not include the newline
// character or any embedded control characters like \1
// or \3.
////////////////////////////////////////////////////////////////////
PN_stdfloat TextNode::
calc_width(const wstring &line) const {
PN_stdfloat width = 0.0f;
wstring::const_iterator si;
for (si = line.begin(); si != line.end(); ++si) {
width += calc_width(*si);
}
return width;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::output
// Access: Public, Virtual
// Description:
////////////////////////////////////////////////////////////////////
void TextNode::
output(ostream &out) const {
PandaNode::output(out);
check_rebuild();
int geom_count = 0;
if (_internal_geom != (PandaNode *)NULL) {
geom_count = count_geoms(_internal_geom);
}
out << " (" << geom_count << " geoms)";
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::write
// Access: Published, Virtual
// Description:
////////////////////////////////////////////////////////////////////
void TextNode::
write(ostream &out, int indent_level) const {
PandaNode::write(out, indent_level);
TextProperties::write(out, indent_level + 2);
indent(out, indent_level + 2)
<< "transform is: " << *TransformState::make_mat(_transform) << "\n";
indent(out, indent_level + 2)
<< "in coordinate system " << _coordinate_system << "\n";
indent(out, indent_level + 2)
<< "text is " << get_text() << "\n";
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::generate
// Access: Published
// Description: Generates the text, according to the parameters
// indicated within the TextNode, and returns a Node
// that may be parented within the tree to represent it.
////////////////////////////////////////////////////////////////////
PT(PandaNode) TextNode::
generate() {
PStatTimer timer(_text_generate_pcollector);
if (text_cat.is_debug()) {
text_cat.debug()
<< "Rebuilding " << get_type() << " " << get_name()
<< " with '" << get_text() << "'\n";
}
// The strategy here will be to assemble together a bunch of
// letters, instanced from the letter hierarchy of font_def, into
// our own little hierarchy.
// There will be one root over the whole text block, that
// contains the transform passed in. Under this root there will be
// another node for each row, that moves the row into the right place
// horizontally and vertically, and for each row, there is another
// node for each character.
_ul3d.set(0.0f, 0.0f, 0.0f);
_lr3d.set(0.0f, 0.0f, 0.0f);
// Now build a new sub-tree for all the text components.
string name = get_text();
size_t newline = name.find('\n');
if (newline != string::npos) {
name = name.substr(0, newline);
}
PT(PandaNode) root = new PandaNode(name);
if (!has_text()) {
return root;
}
TextFont *font = get_font();
if (font == (TextFont *)NULL) {
return root;
}
// Compute the overall text transform matrix. We build the text in
// a Z-up coordinate system and then convert it to whatever the user
// asked for.
LMatrix4 mat =
LMatrix4::convert_mat(CS_zup_right, _coordinate_system) *
_transform;
CPT(TransformState) transform = TransformState::make_mat(mat);
root->set_transform(transform);
wstring wtext = get_wtext();
// Assemble the text.
TextAssembler assembler(this);
assembler.set_properties(*this);
assembler.set_max_rows(_max_rows);
assembler.set_usage_hint(_usage_hint);
assembler.set_dynamic_merge((_flatten_flags & FF_dynamic_merge) != 0);
bool all_set = assembler.set_wtext(wtext);
if (all_set) {
// No overflow.
_flags &= ~F_has_overflow;
} else {
// Overflow.
_flags |= F_has_overflow;
}
PT(PandaNode) text_root = assembler.assemble_text();
_text_ul = assembler.get_ul();
_text_lr = assembler.get_lr();
_num_rows = assembler.get_num_rows();
_wordwrapped_wtext = assembler.get_wordwrapped_wtext();
// Parent the text in.
PT(PandaNode) text = new PandaNode("text");
root->add_child(text, get_draw_order() + 2);
text->add_child(text_root);
// Save the bounding-box information about the text in a form
// friendly to the user.
const LVector2 &ul = assembler.get_ul();
const LVector2 &lr = assembler.get_lr();
_ul3d.set(ul[0], 0.0f, ul[1]);
_lr3d.set(lr[0], 0.0f, lr[1]);
_ul3d = _ul3d * _transform;
_lr3d = _lr3d * _transform;
// Incidentally, that means we don't need to measure the text now.
_flags &= ~F_needs_measure;
// Now flatten our hierarchy to get rid of the transforms we put in,
// applying them to the vertices.
NodePath root_np(root);
if (_flatten_flags & FF_strong) {
root_np.flatten_strong();
} else if (_flatten_flags & FF_medium) {
root_np.flatten_medium();
} else if (_flatten_flags & FF_light) {
root_np.flatten_light();
}
// Now deal with the decorations.
if (has_card()) {
PT(PandaNode) card_root;
if (has_card_border()) {
card_root = make_card_with_border();
} else {
card_root = make_card();
}
card_root->set_transform(transform);
card_root->set_attrib(ColorAttrib::make_flat(get_card_color()));
if (get_card_color()[3] != 1.0f) {
card_root->set_attrib(TransparencyAttrib::make(TransparencyAttrib::M_alpha));
}
if (has_card_texture()) {
card_root->set_attrib(TextureAttrib::make(get_card_texture()));
}
if (has_bin()) {
card_root->set_attrib(CullBinAttrib::make(get_bin(), get_draw_order()));
}
// We always apply attribs down to the card vertices.
SceneGraphReducer gr;
gr.apply_attribs(card_root);
// In order to decal the text onto the card, the card must
// become the parent of the text.
card_root->add_child(root);
root = card_root;
if (get_card_decal()) {
card_root->set_effect(DecalEffect::make());
}
}
if (has_frame()) {
PT(PandaNode) frame_root = make_frame();
frame_root->set_transform(transform);
root->add_child(frame_root, get_draw_order() + 1);
frame_root->set_attrib(ColorAttrib::make_flat(get_frame_color()));
if (get_frame_color()[3] != 1.0f) {
frame_root->set_attrib(TransparencyAttrib::make(TransparencyAttrib::M_alpha));
}
if (has_bin()) {
frame_root->set_attrib(CullBinAttrib::make(get_bin(), get_draw_order() + 1));
}
SceneGraphReducer gr;
gr.apply_attribs(frame_root);
}
return root;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::get_internal_geom
// Access: Published
// Description: Returns the actual node that is used internally to
// render the text, if the TextNode is parented within
// the scene graph.
//
// In general, you should not call this method. Call
// generate() instead if you want to get a handle to
// geometry that represents the text. This method is
// provided as a debugging aid only.
////////////////////////////////////////////////////////////////////
PandaNode *TextNode::
get_internal_geom() const {
// Output a nuisance warning to discourage the naive from calling
// this method accidentally.
text_cat.info()
<< "TextNode::get_internal_geom() called.\n";
check_rebuild();
return _internal_geom;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::get_unsafe_to_apply_attribs
// Access: Public, Virtual
// Description: Returns the union of all attributes from
// SceneGraphReducer::AttribTypes that may not safely be
// applied to the vertices of this node. If this is
// nonzero, these attributes must be dropped at this
// node as a state change.
//
// This is a generalization of safe_to_transform().
////////////////////////////////////////////////////////////////////
int TextNode::
get_unsafe_to_apply_attribs() const {
// We have no way to apply these kinds of attributes to our
// TextNode, so insist they get dropped into the PandaNode's basic
// state.
return
SceneGraphReducer::TT_tex_matrix |
SceneGraphReducer::TT_other;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::apply_attribs_to_vertices
// Access: Public, Virtual
// Description: Applies whatever attributes are specified in the
// AccumulatedAttribs object (and by the attrib_types
// bitmask) to the vertices on this node, if
// appropriate. If this node uses geom arrays like a
// GeomNode, the supplied GeomTransformer may be used to
// unify shared arrays across multiple different nodes.
//
// This is a generalization of xform().
////////////////////////////////////////////////////////////////////
void TextNode::
apply_attribs_to_vertices(const AccumulatedAttribs &attribs, int attrib_types,
GeomTransformer &transformer) {
if ((attrib_types & SceneGraphReducer::TT_transform) != 0) {
const LMatrix4 &mat = attribs._transform->get_mat();
_transform *= mat;
if ((_flags & F_needs_measure) == 0) {
// If we already have a measure, transform it too. We don't
// need to invalidate the 2-d parts, since that's not affected
// by the transform anyway.
_ul3d = _ul3d * mat;
_lr3d = _lr3d * mat;
}
}
if ((attrib_types & SceneGraphReducer::TT_color) != 0) {
if (attribs._color != (const RenderAttrib *)NULL) {
const ColorAttrib *ca = DCAST(ColorAttrib, attribs._color);
if (ca->get_color_type() == ColorAttrib::T_flat) {
const LColor &c = ca->get_color();
set_text_color(c);
set_frame_color(c);
set_card_color(c);
set_shadow_color(c);
}
}
}
if ((attrib_types & SceneGraphReducer::TT_color_scale) != 0) {
if (attribs._color_scale != (const RenderAttrib *)NULL) {
const ColorScaleAttrib *csa = DCAST(ColorScaleAttrib, attribs._color_scale);
const LVecBase4 &s = csa->get_scale();
if (s != LVecBase4(1.0f, 1.0f, 1.0f, 1.0f)) {
LVecBase4 tc = get_text_color();
tc[0] *= s[0];
tc[1] *= s[1];
tc[2] *= s[2];
tc[3] *= s[3];
set_text_color(tc);
LVecBase4 sc = get_shadow_color();
sc[0] *= s[0];
sc[1] *= s[1];
sc[2] *= s[2];
sc[3] *= s[3];
set_shadow_color(sc);
LVecBase4 fc = get_frame_color();
fc[0] *= s[0];
fc[1] *= s[1];
fc[2] *= s[2];
fc[3] *= s[3];
set_frame_color(fc);
LVecBase4 cc = get_card_color();
cc[0] *= s[0];
cc[1] *= s[1];
cc[2] *= s[2];
cc[3] *= s[3];
set_card_color(cc);
}
}
}
// Now propagate the attributes down to our already-generated
// geometry, if we have any.
if ((_flags & F_needs_rebuild) == 0 &&
_internal_geom != (PandaNode *)NULL) {
SceneGraphReducer gr;
gr.apply_attribs(_internal_geom, attribs, attrib_types, transformer);
}
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::calc_tight_bounds
// Access: Public, Virtual
// Description: This is used to support
// NodePath::calc_tight_bounds(). It is not intended to
// be called directly, and it has nothing to do with the
// normal Panda bounding-volume computation.
//
// If the node contains any geometry, this updates
// min_point and max_point to enclose its bounding box.
// found_any is to be set true if the node has any
// geometry at all, or left alone if it has none. This
// method may be called over several nodes, so it may
// enter with min_point, max_point, and found_any
// already set.
////////////////////////////////////////////////////////////////////
CPT(TransformState) TextNode::
calc_tight_bounds(LPoint3 &min_point, LPoint3 &max_point, bool &found_any,
const TransformState *transform, Thread *current_thread) const {
CPT(TransformState) next_transform =
PandaNode::calc_tight_bounds(min_point, max_point, found_any, transform,
current_thread);
check_rebuild();
if (_internal_geom != (PandaNode *)NULL) {
_internal_geom->calc_tight_bounds(min_point, max_point,
found_any, next_transform, current_thread);
}
return next_transform;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::cull_callback
// Access: Protected, Virtual
// Description: This function will be called during the cull
// traversal to perform any additional operations that
// should be performed at cull time. This may include
// additional manipulation of render state or additional
// visible/invisible decisions, or any other arbitrary
// operation.
//
// Note that this function will *not* be called unless
// set_cull_callback() is called in the constructor of
// the derived class. It is necessary to call
// set_cull_callback() to indicated that we require
// cull_callback() to be called.
//
// By the time this function is called, the node has
// already passed the bounding-volume test for the
// viewing frustum, and the node's transform and state
// have already been applied to the indicated
// CullTraverserData object.
//
// The return value is true if this node should be
// visible, or false if it should be culled.
////////////////////////////////////////////////////////////////////
bool TextNode::
cull_callback(CullTraverser *trav, CullTraverserData &data) {
check_rebuild();
if (_internal_geom != (PandaNode *)NULL) {
// Render the text with this node.
CullTraverserData next_data(data, _internal_geom);
trav->traverse(next_data);
}
// Now continue to render everything else below this node.
return true;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::is_renderable
// Access: Public, Virtual
// Description: Returns true if there is some value to visiting this
// particular node during the cull traversal for any
// camera, false otherwise. This will be used to
// optimize the result of get_net_draw_show_mask(), so
// that any subtrees that contain only nodes for which
// is_renderable() is false need not be visited.
////////////////////////////////////////////////////////////////////
bool TextNode::
is_renderable() const {
return true;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::compute_internal_bounds
// Access: Protected, Virtual
// Description: Called when needed to recompute the node's
// _internal_bound object. Nodes that contain anything
// of substance should redefine this to do the right
// thing.
////////////////////////////////////////////////////////////////////
void TextNode::
compute_internal_bounds(CPT(BoundingVolume) &internal_bounds,
int &internal_vertices,
int pipeline_stage,
Thread *current_thread) const {
// First, get ourselves a fresh, empty bounding volume.
PT(BoundingVolume) bound = new BoundingSphere;
GeometricBoundingVolume *gbv = DCAST(GeometricBoundingVolume, bound);
// Now enclose the bounding box around the text. We can do this
// without actually generating the text, if we have at least
// measured it.
check_measure();
LPoint3 vertices[8];
vertices[0].set(_ul3d[0], _ul3d[1], _ul3d[2]);
vertices[1].set(_ul3d[0], _ul3d[1], _lr3d[2]);
vertices[2].set(_ul3d[0], _lr3d[1], _ul3d[2]);
vertices[3].set(_ul3d[0], _lr3d[1], _lr3d[2]);
vertices[4].set(_lr3d[0], _ul3d[1], _ul3d[2]);
vertices[5].set(_lr3d[0], _ul3d[1], _lr3d[2]);
vertices[6].set(_lr3d[0], _lr3d[1], _ul3d[2]);
vertices[7].set(_lr3d[0], _lr3d[1], _lr3d[2]);
gbv->around(vertices, vertices + 8);
internal_bounds = bound;
internal_vertices = 0; // TODO: estimate this better.
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::r_prepare_scene
// Access: Protected, Virtual
// Description: The recursive implementation of prepare_scene().
// Don't call this directly; call
// PandaNode::prepare_scene() or
// NodePath::prepare_scene() instead.
////////////////////////////////////////////////////////////////////
void TextNode::
r_prepare_scene(GraphicsStateGuardianBase *gsg, const RenderState *node_state,
GeomTransformer &transformer, Thread *current_thread) {
check_rebuild();
PandaNode *child = _internal_geom;
if (child != (PandaNode *)NULL) {
CPT(RenderState) child_state = node_state->compose(child->get_state());
child->r_prepare_scene(gsg, child_state, transformer, current_thread);
}
PandaNode::r_prepare_scene(gsg, node_state, transformer, current_thread);
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::do_rebuild
// Access: Private
// Description: Removes any existing children of the TextNode, and
// adds the newly generated text instead.
////////////////////////////////////////////////////////////////////
void TextNode::
do_rebuild() {
_flags &= ~(F_needs_rebuild | F_needs_measure);
_internal_geom = generate();
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::do_measure
// Access: Private
// Description: Can be called in lieu of do_rebuild() to measure the
// text and set up the bounding boxes properly without
// actually assembling it.
////////////////////////////////////////////////////////////////////
void TextNode::
do_measure() {
// We no longer make this a special case.
do_rebuild();
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::make_frame
// Access: Private
// Description: Creates a frame around the text.
////////////////////////////////////////////////////////////////////
PT(PandaNode) TextNode::
make_frame() {
PT(GeomNode) frame_node = new GeomNode("frame");
LVector4 dimensions = get_frame_actual();
PN_stdfloat left = dimensions[0];
PN_stdfloat right = dimensions[1];
PN_stdfloat bottom = dimensions[2];
PN_stdfloat top = dimensions[3];
CPT(RenderAttrib) thick = RenderModeAttrib::make(RenderModeAttrib::M_unchanged, _frame_width);
CPT(RenderState) state = RenderState::make(thick);
PT(GeomVertexData) vdata = new GeomVertexData
("text", GeomVertexFormat::get_v3(), get_usage_hint());
GeomVertexWriter vertex(vdata, InternalName::get_vertex());
vertex.add_data3(left, 0.0f, top);
vertex.add_data3(left, 0.0f, bottom);
vertex.add_data3(right, 0.0f, bottom);
vertex.add_data3(right, 0.0f, top);
PT(GeomLinestrips) frame = new GeomLinestrips(get_usage_hint());
frame->add_consecutive_vertices(0, 4);
frame->add_vertex(0);
frame->close_primitive();
PT(Geom) geom = new Geom(vdata);
geom->add_primitive(frame);
frame_node->add_geom(geom, state);
if (get_frame_corners()) {
PT(GeomPoints) corners = new GeomPoints(get_usage_hint());
corners->add_consecutive_vertices(0, 4);
PT(Geom) geom2 = new Geom(vdata);
geom2->add_primitive(corners);
frame_node->add_geom(geom2, state);
}
return frame_node.p();
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::make_card
// Access: Private
// Description: Creates a card behind the text.
////////////////////////////////////////////////////////////////////
PT(PandaNode) TextNode::
make_card() {
PT(GeomNode) card_node = new GeomNode("card");
LVector4 dimensions = get_card_actual();
PN_stdfloat left = dimensions[0];
PN_stdfloat right = dimensions[1];
PN_stdfloat bottom = dimensions[2];
PN_stdfloat top = dimensions[3];
PT(GeomVertexData) vdata = new GeomVertexData
("text", GeomVertexFormat::get_v3t2(), get_usage_hint());
GeomVertexWriter vertex(vdata, InternalName::get_vertex());
GeomVertexWriter texcoord(vdata, InternalName::get_texcoord());
vertex.add_data3(left, 0.0f, top);
vertex.add_data3(left, 0.0f, bottom);
vertex.add_data3(right, 0.0f, top);
vertex.add_data3(right, 0.0f, bottom);
texcoord.add_data2(0.0f, 1.0f);
texcoord.add_data2(0.0f, 0.0f);
texcoord.add_data2(1.0f, 1.0f);
texcoord.add_data2(1.0f, 0.0f);
PT(GeomTristrips) card = new GeomTristrips(get_usage_hint());
card->add_consecutive_vertices(0, 4);
card->close_primitive();
PT(Geom) geom = new Geom(vdata);
geom->add_primitive(card);
card_node->add_geom(geom);
return card_node.p();
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::make_card_with_border
// Access: Private
// Description: Creates a card behind the text with a specified border
// for button edge or what have you.
////////////////////////////////////////////////////////////////////
PT(PandaNode) TextNode::
make_card_with_border() {
PT(GeomNode) card_node = new GeomNode("card");
LVector4 dimensions = get_card_actual();
PN_stdfloat left = dimensions[0];
PN_stdfloat right = dimensions[1];
PN_stdfloat bottom = dimensions[2];
PN_stdfloat top = dimensions[3];
// we now create three tri-strips instead of one
// with vertices arranged as follows:
//
// 1 3 5 7 - one
// 2 4 6 8 / \ two
// 9 11 13 15 \ /
// 10 12 14 16 - three
//
PT(GeomVertexData) vdata = new GeomVertexData
("text", GeomVertexFormat::get_v3t2(), get_usage_hint());
GeomVertexWriter vertex(vdata, InternalName::get_vertex());
GeomVertexWriter texcoord(vdata, InternalName::get_texcoord());
// verts 1,2,3,4
vertex.add_data3(left, 0.02, top);
vertex.add_data3(left, 0.02, top - _card_border_size);
vertex.add_data3(left + _card_border_size, 0.02, top);
vertex.add_data3(left + _card_border_size, 0.02,
top - _card_border_size);
// verts 5,6,7,8
vertex.add_data3(right - _card_border_size, 0.02, top);
vertex.add_data3(right - _card_border_size, 0.02,
top - _card_border_size);
vertex.add_data3(right, 0.02, top);
vertex.add_data3(right, 0.02, top - _card_border_size);
// verts 9,10,11,12
vertex.add_data3(left, 0.02, bottom + _card_border_size);
vertex.add_data3(left, 0.02, bottom);
vertex.add_data3(left + _card_border_size, 0.02,
bottom + _card_border_size);
vertex.add_data3(left + _card_border_size, 0.02, bottom);
// verts 13,14,15,16
vertex.add_data3(right - _card_border_size, 0.02,
bottom + _card_border_size);
vertex.add_data3(right - _card_border_size, 0.02, bottom);
vertex.add_data3(right, 0.02, bottom + _card_border_size);
vertex.add_data3(right, 0.02, bottom);
texcoord.add_data2(0.0f, 1.0f); //1
texcoord.add_data2(0.0f, 1.0f - _card_border_uv_portion); //2
texcoord.add_data2(0.0f + _card_border_uv_portion, 1.0f); //3
texcoord.add_data2(0.0f + _card_border_uv_portion,
1.0f - _card_border_uv_portion); //4
texcoord.add_data2(1.0f -_card_border_uv_portion, 1.0f); //5
texcoord.add_data2(1.0f -_card_border_uv_portion,
1.0f - _card_border_uv_portion); //6
texcoord.add_data2(1.0f, 1.0f); //7
texcoord.add_data2(1.0f, 1.0f - _card_border_uv_portion); //8
texcoord.add_data2(0.0f, _card_border_uv_portion); //9
texcoord.add_data2(0.0f, 0.0f); //10
texcoord.add_data2(_card_border_uv_portion, _card_border_uv_portion); //11
texcoord.add_data2(_card_border_uv_portion, 0.0f); //12
texcoord.add_data2(1.0f - _card_border_uv_portion, _card_border_uv_portion);//13
texcoord.add_data2(1.0f - _card_border_uv_portion, 0.0f);//14
texcoord.add_data2(1.0f, _card_border_uv_portion);//15
texcoord.add_data2(1.0f, 0.0f);//16
PT(GeomTristrips) card = new GeomTristrips(get_usage_hint());
// tristrip #1
card->add_consecutive_vertices(0, 8);
card->close_primitive();
// tristrip #2
card->add_vertex(1);
card->add_vertex(8);
card->add_vertex(3);
card->add_vertex(10);
card->add_vertex(5);
card->add_vertex(12);
card->add_vertex(7);
card->add_vertex(14);
card->close_primitive();
// tristrip #3
card->add_consecutive_vertices(8, 8);
card->close_primitive();
PT(Geom) geom = new Geom(vdata);
geom->add_primitive(card);
card_node->add_geom(geom);
return card_node.p();
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::count_geoms
// Access: Private, Static
// Description: Recursively counts the number of Geoms at the
// indicated node and below. Strictly for reporting
// this count on output.
////////////////////////////////////////////////////////////////////
int TextNode::
count_geoms(PandaNode *node) {
int num_geoms = 0;
if (node->is_geom_node()) {
GeomNode *geom_node = DCAST(GeomNode, node);
num_geoms += geom_node->get_num_geoms();
}
Children children = node->get_children();
for (int i = 0; i < children.get_num_children(); ++i) {
num_geoms += count_geoms(children.get_child(i));
}
return num_geoms;
}
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