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godot/editor/collada/collada.cpp
Rémi Verschelde a7f49ac9a1 Update copyright statements to 2020 
Happy new year to the wonderful Godot community!

We're starting a new decade with a well-established, non-profit, free
and open source game engine, and tons of further improvements in the
pipeline from hundreds of contributors.

Godot will keep getting better, and we're looking forward to all the
games that the community will keep developing and releasing with it.
2020-01-01 11:16:22 +01:00

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/*************************************************************************/
/* collada.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "collada.h"
#include <stdio.h>
//#define DEBUG_DEFAULT_ANIMATION
//#define DEBUG_COLLADA
#ifdef DEBUG_COLLADA
#define COLLADA_PRINT(m_what) print_line(m_what)
#else
#define COLLADA_PRINT(m_what)
#endif
#define COLLADA_IMPORT_SCALE_SCENE
/* HELPERS */
String Collada::Effect::get_texture_path(const String &p_source, Collada &state) const {
const String &image = p_source;
ERR_FAIL_COND_V(!state.state.image_map.has(image), "");
return state.state.image_map[image].path;
}
Transform Collada::get_root_transform() const {
Transform unit_scale_transform;
#ifndef COLLADA_IMPORT_SCALE_SCENE
unit_scale_transform.scale(Vector3(state.unit_scale, state.unit_scale, state.unit_scale));
#endif
return unit_scale_transform;
}
void Collada::Vertex::fix_unit_scale(Collada &state) {
#ifdef COLLADA_IMPORT_SCALE_SCENE
vertex *= state.state.unit_scale;
#endif
}
static String _uri_to_id(const String &p_uri) {
if (p_uri.begins_with("#"))
return p_uri.substr(1, p_uri.size() - 1);
else
return p_uri;
}
/** HELPER FUNCTIONS **/
Transform Collada::fix_transform(const Transform &p_transform) {
Transform tr = p_transform;
#ifndef NO_UP_AXIS_SWAP
if (state.up_axis != Vector3::AXIS_Y) {
for (int i = 0; i < 3; i++)
SWAP(tr.basis[1][i], tr.basis[state.up_axis][i]);
for (int i = 0; i < 3; i++)
SWAP(tr.basis[i][1], tr.basis[i][state.up_axis]);
SWAP(tr.origin[1], tr.origin[state.up_axis]);
tr.basis[state.up_axis][0] = -tr.basis[state.up_axis][0];
tr.basis[state.up_axis][1] = -tr.basis[state.up_axis][1];
tr.basis[0][state.up_axis] = -tr.basis[0][state.up_axis];
tr.basis[1][state.up_axis] = -tr.basis[1][state.up_axis];
tr.origin[state.up_axis] = -tr.origin[state.up_axis];
}
#endif
//tr.scale(Vector3(state.unit_scale.unit_scale.unit_scale));
return tr;
//return state.matrix_fix * p_transform;
}
static Transform _read_transform_from_array(const Vector<float> &array, int ofs = 0) {
Transform tr;
// i wonder why collada matrices are transposed, given that's opposed to opengl..
tr.basis.elements[0][0] = array[0 + ofs];
tr.basis.elements[0][1] = array[1 + ofs];
tr.basis.elements[0][2] = array[2 + ofs];
tr.basis.elements[1][0] = array[4 + ofs];
tr.basis.elements[1][1] = array[5 + ofs];
tr.basis.elements[1][2] = array[6 + ofs];
tr.basis.elements[2][0] = array[8 + ofs];
tr.basis.elements[2][1] = array[9 + ofs];
tr.basis.elements[2][2] = array[10 + ofs];
tr.origin.x = array[3 + ofs];
tr.origin.y = array[7 + ofs];
tr.origin.z = array[11 + ofs];
return tr;
}
/* STRUCTURES */
Transform Collada::Node::compute_transform(Collada &state) const {
Transform xform;
for (int i = 0; i < xform_list.size(); i++) {
Transform xform_step;
const XForm &xf = xform_list[i];
switch (xf.op) {
case XForm::OP_ROTATE: {
if (xf.data.size() >= 4) {
xform_step.rotate(Vector3(xf.data[0], xf.data[1], xf.data[2]), Math::deg2rad(xf.data[3]));
}
} break;
case XForm::OP_SCALE: {
if (xf.data.size() >= 3) {
xform_step.scale(Vector3(xf.data[0], xf.data[1], xf.data[2]));
}
} break;
case XForm::OP_TRANSLATE: {
if (xf.data.size() >= 3) {
xform_step.origin = Vector3(xf.data[0], xf.data[1], xf.data[2]);
}
} break;
case XForm::OP_MATRIX: {
if (xf.data.size() >= 16) {
xform_step = _read_transform_from_array(xf.data, 0);
}
} break;
default: {
}
}
xform = xform * xform_step;
}
#ifdef COLLADA_IMPORT_SCALE_SCENE
xform.origin *= state.state.unit_scale;
#endif
return xform;
}
Transform Collada::Node::get_transform() const {
return default_transform;
}
Transform Collada::Node::get_global_transform() const {
if (parent)
return parent->get_global_transform() * default_transform;
else
return default_transform;
}
Vector<float> Collada::AnimationTrack::get_value_at_time(float p_time) const {
ERR_FAIL_COND_V(keys.size() == 0, Vector<float>());
int i = 0;
for (i = 0; i < keys.size(); i++) {
if (keys[i].time > p_time)
break;
}
if (i == 0)
return keys[0].data;
if (i == keys.size())
return keys[keys.size() - 1].data;
switch (keys[i].interp_type) {
case INTERP_BEZIER: //wait for bezier
case INTERP_LINEAR: {
float c = (p_time - keys[i - 1].time) / (keys[i].time - keys[i - 1].time);
if (keys[i].data.size() == 16) {
//interpolate a matrix
Transform src = _read_transform_from_array(keys[i - 1].data);
Transform dst = _read_transform_from_array(keys[i].data);
Transform interp = c < 0.001 ? src : src.interpolate_with(dst, c);
Vector<float> ret;
ret.resize(16);
Transform tr;
// i wonder why collada matrices are transposed, given that's opposed to opengl..
ret.write[0] = interp.basis.elements[0][0];
ret.write[1] = interp.basis.elements[0][1];
ret.write[2] = interp.basis.elements[0][2];
ret.write[4] = interp.basis.elements[1][0];
ret.write[5] = interp.basis.elements[1][1];
ret.write[6] = interp.basis.elements[1][2];
ret.write[8] = interp.basis.elements[2][0];
ret.write[9] = interp.basis.elements[2][1];
ret.write[10] = interp.basis.elements[2][2];
ret.write[3] = interp.origin.x;
ret.write[7] = interp.origin.y;
ret.write[11] = interp.origin.z;
ret.write[12] = 0;
ret.write[13] = 0;
ret.write[14] = 0;
ret.write[15] = 1;
return ret;
} else {
Vector<float> dest;
dest.resize(keys[i].data.size());
for (int j = 0; j < dest.size(); j++) {
dest.write[j] = keys[i].data[j] * c + keys[i - 1].data[j] * (1.0 - c);
}
return dest;
//interpolate one by one
}
} break;
}
ERR_FAIL_V(Vector<float>());
}
void Collada::_parse_asset(XMLParser &parser) {
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String name = parser.get_node_name();
if (name == "up_axis") {
parser.read();
if (parser.get_node_data() == "X_UP")
state.up_axis = Vector3::AXIS_X;
if (parser.get_node_data() == "Y_UP")
state.up_axis = Vector3::AXIS_Y;
if (parser.get_node_data() == "Z_UP")
state.up_axis = Vector3::AXIS_Z;
COLLADA_PRINT("up axis: " + parser.get_node_data());
} else if (name == "unit") {
state.unit_scale = parser.get_attribute_value("meter").to_double();
COLLADA_PRINT("unit scale: " + rtos(state.unit_scale));
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "asset")
break; //end of <asset>
}
}
void Collada::_parse_image(XMLParser &parser) {
String id = parser.get_attribute_value("id");
if (!(state.import_flags & IMPORT_FLAG_SCENE)) {
if (!parser.is_empty())
parser.skip_section();
return;
}
Image image;
if (state.version < State::Version(1, 4, 0)) {
/* <1.4 */
String path = parser.get_attribute_value("source").strip_edges();
if (path.find("://") == -1 && path.is_rel_path()) {
// path is relative to file being loaded, so convert to a resource path
image.path = ProjectSettings::get_singleton()->localize_path(state.local_path.get_base_dir().plus_file(path.percent_decode()));
}
} else {
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String name = parser.get_node_name();
if (name == "init_from") {
parser.read();
String path = parser.get_node_data().strip_edges().percent_decode();
if (path.find("://") == -1 && path.is_rel_path()) {
// path is relative to file being loaded, so convert to a resource path
path = ProjectSettings::get_singleton()->localize_path(state.local_path.get_base_dir().plus_file(path));
} else if (path.find("file:///") == 0) {
path = path.replace_first("file:///", "");
path = ProjectSettings::get_singleton()->localize_path(path);
}
image.path = path;
} else if (name == "data") {
ERR_PRINT("COLLADA Embedded image data not supported!");
} else if (name == "extra" && !parser.is_empty())
parser.skip_section();
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "image")
break; //end of <asset>
}
}
state.image_map[id] = image;
}
void Collada::_parse_material(XMLParser &parser) {
if (!(state.import_flags & IMPORT_FLAG_SCENE)) {
if (!parser.is_empty())
parser.skip_section();
return;
}
Material material;
String id = parser.get_attribute_value("id");
if (parser.has_attribute("name"))
material.name = parser.get_attribute_value("name");
if (state.version < State::Version(1, 4, 0)) {
/* <1.4 */
ERR_PRINT("Collada Materials < 1.4 are not supported (yet)");
} else {
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT && parser.get_node_name() == "instance_effect") {
material.instance_effect = _uri_to_id(parser.get_attribute_value("url"));
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "material")
break; //end of <asset>
}
}
state.material_map[id] = material;
}
//! reads floats from inside of xml element until end of xml element
Vector<float> Collada::_read_float_array(XMLParser &parser) {
if (parser.is_empty())
return Vector<float>();
Vector<String> splitters;
splitters.push_back(" ");
splitters.push_back("\n");
splitters.push_back("\r");
splitters.push_back("\t");
Vector<float> array;
while (parser.read() == OK) {
// TODO: check for comments inside the element
// and ignore them.
if (parser.get_node_type() == XMLParser::NODE_TEXT) {
// parse float data
String str = parser.get_node_data();
array = str.split_floats_mk(splitters, false);
//array=str.split_floats(" ",false);
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END)
break; // end parsing text
}
return array;
}
Vector<String> Collada::_read_string_array(XMLParser &parser) {
if (parser.is_empty())
return Vector<String>();
Vector<String> array;
while (parser.read() == OK) {
// TODO: check for comments inside the element
// and ignore them.
if (parser.get_node_type() == XMLParser::NODE_TEXT) {
// parse String data
String str = parser.get_node_data();
array = str.split_spaces();
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END)
break; // end parsing text
}
return array;
}
Transform Collada::_read_transform(XMLParser &parser) {
if (parser.is_empty())
return Transform();
Vector<String> array;
while (parser.read() == OK) {
// TODO: check for comments inside the element
// and ignore them.
if (parser.get_node_type() == XMLParser::NODE_TEXT) {
// parse float data
String str = parser.get_node_data();
array = str.split_spaces();
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END)
break; // end parsing text
}
ERR_FAIL_COND_V(array.size() != 16, Transform());
Vector<float> farr;
farr.resize(16);
for (int i = 0; i < 16; i++) {
farr.write[i] = array[i].to_double();
}
return _read_transform_from_array(farr);
}
String Collada::_read_empty_draw_type(XMLParser &parser) {
String empty_draw_type = "";
if (parser.is_empty())
return empty_draw_type;
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_TEXT) {
empty_draw_type = parser.get_node_data();
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END)
break; // end parsing text
}
return empty_draw_type;
}
Variant Collada::_parse_param(XMLParser &parser) {
if (parser.is_empty())
return Variant();
String from = parser.get_node_name();
Variant data;
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "float") {
parser.read();
if (parser.get_node_type() == XMLParser::NODE_TEXT) {
data = parser.get_node_data().to_double();
}
} else if (parser.get_node_name() == "float2") {
Vector<float> v2 = _read_float_array(parser);
if (v2.size() >= 2) {
data = Vector2(v2[0], v2[1]);
}
} else if (parser.get_node_name() == "float3") {
Vector<float> v3 = _read_float_array(parser);
if (v3.size() >= 3) {
data = Vector3(v3[0], v3[1], v3[2]);
}
} else if (parser.get_node_name() == "float4") {
Vector<float> v4 = _read_float_array(parser);
if (v4.size() >= 4) {
data = Color(v4[0], v4[1], v4[2], v4[3]);
}
} else if (parser.get_node_name() == "sampler2D") {
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "source") {
parser.read();
if (parser.get_node_type() == XMLParser::NODE_TEXT) {
data = parser.get_node_data();
}
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "sampler2D")
break;
}
} else if (parser.get_node_name() == "surface") {
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "init_from") {
parser.read();
if (parser.get_node_type() == XMLParser::NODE_TEXT) {
data = parser.get_node_data();
}
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "surface")
break;
}
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == from)
break;
}
COLLADA_PRINT("newparam ending " + parser.get_node_name());
return data;
}
void Collada::_parse_effect_material(XMLParser &parser, Effect &effect, String &id) {
if (!(state.import_flags & IMPORT_FLAG_SCENE)) {
if (!parser.is_empty())
parser.skip_section();
return;
}
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
// first come the tags we descend, but ignore the top-levels
COLLADA_PRINT("node name: " + parser.get_node_name());
if (!parser.is_empty() && (parser.get_node_name() == "profile_COMMON" || parser.get_node_name() == "technique" || parser.get_node_name() == "extra")) {
_parse_effect_material(parser, effect, id); // try again
} else if (parser.get_node_name() == "newparam") {
String name = parser.get_attribute_value("sid");
Variant value = _parse_param(parser);
effect.params[name] = value;
COLLADA_PRINT("param: " + name + " value:" + String(value));
} else if (parser.get_node_name() == "constant" ||
parser.get_node_name() == "lambert" ||
parser.get_node_name() == "phong" ||
parser.get_node_name() == "blinn") {
COLLADA_PRINT("shade model: " + parser.get_node_name());
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String what = parser.get_node_name();
if (what == "emission" ||
what == "diffuse" ||
what == "specular" ||
what == "reflective") {
// color or texture types
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "color") {
Vector<float> colorarr = _read_float_array(parser);
COLLADA_PRINT("colorarr size: " + rtos(colorarr.size()));
if (colorarr.size() >= 3) {
// alpha strangely not alright? maybe it needs to be multiplied by value as a channel intensity
Color color(colorarr[0], colorarr[1], colorarr[2], 1.0);
if (what == "diffuse")
effect.diffuse.color = color;
if (what == "specular")
effect.specular.color = color;
if (what == "emission")
effect.emission.color = color;
COLLADA_PRINT(what + " color: " + color);
}
} else if (parser.get_node_name() == "texture") {
String sampler = parser.get_attribute_value("texture");
if (!effect.params.has(sampler)) {
ERR_PRINT(String("Couldn't find sampler: " + sampler + " in material:" + id).utf8().get_data());
} else {
String surface = effect.params[sampler];
if (!effect.params.has(surface)) {
ERR_PRINT(String("Couldn't find surface: " + surface + " in material:" + id).utf8().get_data());
} else {
String uri = effect.params[surface];
if (what == "diffuse") {
effect.diffuse.texture = uri;
} else if (what == "specular") {
effect.specular.texture = uri;
} else if (what == "emission") {
effect.emission.texture = uri;
} else if (what == "bump") {
if (parser.has_attribute("bumptype") && parser.get_attribute_value("bumptype") != "NORMALMAP") {
WARN_PRINT("'bump' texture type is not NORMALMAP, only NORMALMAP is supported.");
}
effect.bump.texture = uri;
}
COLLADA_PRINT(what + " texture: " + uri);
}
}
} else if (!parser.is_empty())
parser.skip_section();
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == what)
break;
}
} else if (what == "shininess") {
effect.shininess = _parse_param(parser);
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && (parser.get_node_name() == "constant" ||
parser.get_node_name() == "lambert" ||
parser.get_node_name() == "phong" ||
parser.get_node_name() == "blinn"))
break;
}
} else if (parser.get_node_name() == "double_sided" || parser.get_node_name() == "show_double_sided") { // colladamax / google earth
// 3DS Max / Google Earth double sided extension
parser.read();
effect.found_double_sided = true;
effect.double_sided = parser.get_node_data().to_int();
COLLADA_PRINT("double sided: " + itos(parser.get_node_data().to_int()));
} else if (parser.get_node_name() == "unshaded") {
parser.read();
effect.unshaded = parser.get_node_data().to_int();
} else if (parser.get_node_name() == "bump") {
// color or texture types
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "texture") {
String sampler = parser.get_attribute_value("texture");
if (!effect.params.has(sampler)) {
ERR_PRINT(String("Couldn't find sampler: " + sampler + " in material:" + id).utf8().get_data());
} else {
String surface = effect.params[sampler];
if (!effect.params.has(surface)) {
ERR_PRINT(String("Couldn't find surface: " + surface + " in material:" + id).utf8().get_data());
} else {
String uri = effect.params[surface];
if (parser.has_attribute("bumptype") && parser.get_attribute_value("bumptype") != "NORMALMAP") {
WARN_PRINT("'bump' texture type is not NORMALMAP, only NORMALMAP is supported.");
}
effect.bump.texture = uri;
COLLADA_PRINT(" bump: " + uri);
}
}
} else if (!parser.is_empty())
parser.skip_section();
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "bump")
break;
}
} else if (!parser.is_empty())
parser.skip_section();
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END &&
(parser.get_node_name() == "effect" ||
parser.get_node_name() == "profile_COMMON" ||
parser.get_node_name() == "technique" ||
parser.get_node_name() == "extra"))
break;
}
}
void Collada::_parse_effect(XMLParser &parser) {
if (!(state.import_flags & IMPORT_FLAG_SCENE)) {
if (!parser.is_empty())
parser.skip_section();
return;
}
String id = parser.get_attribute_value("id");
Effect effect;
if (parser.has_attribute("name"))
effect.name = parser.get_attribute_value("name");
_parse_effect_material(parser, effect, id);
state.effect_map[id] = effect;
COLLADA_PRINT("Effect ID:" + id);
}
void Collada::_parse_camera(XMLParser &parser) {
if (!(state.import_flags & IMPORT_FLAG_SCENE)) {
if (!parser.is_empty())
parser.skip_section();
return;
}
String id = parser.get_attribute_value("id");
state.camera_data_map[id] = CameraData();
CameraData &camera = state.camera_data_map[id];
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String name = parser.get_node_name();
if (name == "perspective") {
camera.mode = CameraData::MODE_PERSPECTIVE;
} else if (name == "orthographic") {
camera.mode = CameraData::MODE_ORTHOGONAL;
} else if (name == "xfov") {
parser.read();
camera.perspective.x_fov = parser.get_node_data().to_double();
} else if (name == "yfov") {
parser.read();
camera.perspective.y_fov = parser.get_node_data().to_double();
} else if (name == "xmag") {
parser.read();
camera.orthogonal.x_mag = parser.get_node_data().to_double();
} else if (name == "ymag") {
parser.read();
camera.orthogonal.y_mag = parser.get_node_data().to_double();
} else if (name == "aspect_ratio") {
parser.read();
camera.aspect = parser.get_node_data().to_double();
} else if (name == "znear") {
parser.read();
camera.z_near = parser.get_node_data().to_double();
} else if (name == "zfar") {
parser.read();
camera.z_far = parser.get_node_data().to_double();
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "camera")
break; //end of <asset>
}
COLLADA_PRINT("Camera ID:" + id);
}
void Collada::_parse_light(XMLParser &parser) {
if (!(state.import_flags & IMPORT_FLAG_SCENE)) {
if (!parser.is_empty())
parser.skip_section();
return;
}
String id = parser.get_attribute_value("id");
state.light_data_map[id] = LightData();
LightData &light = state.light_data_map[id];
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String name = parser.get_node_name();
if (name == "ambient") {
light.mode = LightData::MODE_AMBIENT;
} else if (name == "directional") {
light.mode = LightData::MODE_DIRECTIONAL;
} else if (name == "point") {
light.mode = LightData::MODE_OMNI;
} else if (name == "spot") {
light.mode = LightData::MODE_SPOT;
} else if (name == "color") {
parser.read();
Vector<float> colorarr = _read_float_array(parser);
COLLADA_PRINT("colorarr size: " + rtos(colorarr.size()));
if (colorarr.size() >= 4) {
// alpha strangely not alright? maybe it needs to be multiplied by value as a channel intensity
Color color(colorarr[0], colorarr[1], colorarr[2], 1.0);
light.color = color;
}
} else if (name == "constant_attenuation") {
parser.read();
light.constant_att = parser.get_node_data().to_double();
} else if (name == "linear_attenuation") {
parser.read();
light.linear_att = parser.get_node_data().to_double();
} else if (name == "quadratic_attenuation") {
parser.read();
light.quad_att = parser.get_node_data().to_double();
} else if (name == "falloff_angle") {
parser.read();
light.spot_angle = parser.get_node_data().to_double();
} else if (name == "falloff_exponent") {
parser.read();
light.spot_exp = parser.get_node_data().to_double();
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "light")
break; //end of <asset>
}
COLLADA_PRINT("Light ID:" + id);
}
void Collada::_parse_curve_geometry(XMLParser &parser, String p_id, String p_name) {
if (!(state.import_flags & IMPORT_FLAG_SCENE)) {
if (!parser.is_empty())
parser.skip_section();
return;
}
//load everything into a pre dictionary
state.curve_data_map[p_id] = CurveData();
CurveData &curvedata = state.curve_data_map[p_id];
curvedata.name = p_name;
COLLADA_PRINT("curve name: " + p_name);
String current_source;
// handles geometry node and the curve children in this loop
// read sources with arrays and accessor for each curve
if (parser.is_empty()) {
return;
}
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String section = parser.get_node_name();
if (section == "source") {
String id = parser.get_attribute_value("id");
curvedata.sources[id] = CurveData::Source();
current_source = id;
COLLADA_PRINT("source data: " + id);
} else if (section == "float_array" || section == "array") {
// create a new array and read it.
if (curvedata.sources.has(current_source)) {
curvedata.sources[current_source].array = _read_float_array(parser);
COLLADA_PRINT("section: " + current_source + " read " + itos(curvedata.sources[current_source].array.size()) + " values.");
}
} else if (section == "Name_array") {
// create a new array and read it.
if (curvedata.sources.has(current_source)) {
curvedata.sources[current_source].sarray = _read_string_array(parser);
COLLADA_PRINT("section: " + current_source + " read " + itos(curvedata.sources[current_source].array.size()) + " values.");
}
} else if (section == "technique_common") {
//skip it
} else if (section == "accessor") { // child of source (below a technique tag)
if (curvedata.sources.has(current_source)) {
curvedata.sources[current_source].stride = parser.get_attribute_value("stride").to_int();
COLLADA_PRINT("section: " + current_source + " stride " + itos(curvedata.sources[current_source].stride));
}
} else if (section == "control_vertices") {
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "input") {
String semantic = parser.get_attribute_value("semantic");
String source = _uri_to_id(parser.get_attribute_value("source"));
curvedata.control_vertices[semantic] = source;
COLLADA_PRINT(section + " input semantic: " + semantic + " source: " + source);
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == section)
break;
}
} else if (!parser.is_empty()) {
parser.skip_section();
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "spline")
break;
}
}
void Collada::_parse_mesh_geometry(XMLParser &parser, String p_id, String p_name) {
if (!(state.import_flags & IMPORT_FLAG_SCENE)) {
if (!parser.is_empty())
parser.skip_section();
return;
}
//load everything into a pre dictionary
state.mesh_data_map[p_id] = MeshData();
MeshData &meshdata = state.mesh_data_map[p_id];
meshdata.name = p_name;
COLLADA_PRINT("mesh name: " + p_name);
String current_source;
// handles geometry node and the mesh children in this loop
// read sources with arrays and accessor for each mesh
if (parser.is_empty()) {
return;
}
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String section = parser.get_node_name();
if (section == "source") {
String id = parser.get_attribute_value("id");
meshdata.sources[id] = MeshData::Source();
current_source = id;
COLLADA_PRINT("source data: " + id);
} else if (section == "float_array" || section == "array") {
// create a new array and read it.
if (meshdata.sources.has(current_source)) {
meshdata.sources[current_source].array = _read_float_array(parser);
COLLADA_PRINT("section: " + current_source + " read " + itos(meshdata.sources[current_source].array.size()) + " values.");
}
} else if (section == "technique_common") {
//skip it
} else if (section == "accessor") { // child of source (below a technique tag)
if (meshdata.sources.has(current_source)) {
meshdata.sources[current_source].stride = parser.get_attribute_value("stride").to_int();
COLLADA_PRINT("section: " + current_source + " stride " + itos(meshdata.sources[current_source].stride));
}
} else if (section == "vertices") {
MeshData::Vertices vert;
String id = parser.get_attribute_value("id");
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "input") {
String semantic = parser.get_attribute_value("semantic");
String source = _uri_to_id(parser.get_attribute_value("source"));
vert.sources[semantic] = source;
COLLADA_PRINT(section + " input semantic: " + semantic + " source: " + source);
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == section)
break;
}
meshdata.vertices[id] = vert;
} else if (section == "triangles" || section == "polylist" || section == "polygons") {
bool polygons = (section == "polygons");
if (polygons) {
WARN_PRINT("Primitive type \"polygons\" is not well supported (concave shapes may fail). To ensure that the geometry is properly imported, please re-export using \"triangles\" or \"polylist\".");
}
MeshData::Primitives prim;
if (parser.has_attribute("material"))
prim.material = parser.get_attribute_value("material");
prim.count = parser.get_attribute_value("count").to_int();
prim.vertex_size = 0;
int last_ref = 0;
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "input") {
String semantic = parser.get_attribute_value("semantic");
String source = _uri_to_id(parser.get_attribute_value("source"));
if (semantic == "TEXCOORD") {
/*
if (parser.has_attribute("set"))// a texcoord
semantic+=parser.get_attribute_value("set");
else
semantic="TEXCOORD0";*/
semantic = "TEXCOORD" + itos(last_ref++);
}
int offset = parser.get_attribute_value("offset").to_int();
MeshData::Primitives::SourceRef sref;
sref.source = source;
sref.offset = offset;
prim.sources[semantic] = sref;
prim.vertex_size = MAX(prim.vertex_size, offset + 1);
COLLADA_PRINT(section + " input semantic: " + semantic + " source: " + source + " offset: " + itos(offset));
} else if (parser.get_node_name() == "p") { //indices
Vector<float> values = _read_float_array(parser);
if (polygons) {
ERR_CONTINUE(prim.vertex_size == 0);
prim.polygons.push_back(values.size() / prim.vertex_size);
int from = prim.indices.size();
prim.indices.resize(from + values.size());
for (int i = 0; i < values.size(); i++)
prim.indices.write[from + i] = values[i];
} else if (prim.vertex_size > 0) {
prim.indices = values;
}
COLLADA_PRINT("read " + itos(values.size()) + " index values");
} else if (parser.get_node_name() == "vcount") { // primitive
Vector<float> values = _read_float_array(parser);
prim.polygons = values;
COLLADA_PRINT("read " + itos(values.size()) + " polygon values");
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == section)
break;
}
meshdata.primitives.push_back(prim);
} else if (parser.get_node_name() == "double_sided") {
parser.read();
meshdata.found_double_sided = true;
meshdata.double_sided = parser.get_node_data().to_int();
} else if (parser.get_node_name() == "polygons") {
ERR_PRINT("Primitive type \"polygons\" not supported, re-export using \"polylist\" or \"triangles\".");
} else if (!parser.is_empty()) {
parser.skip_section();
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "mesh")
break;
}
}
void Collada::_parse_skin_controller(XMLParser &parser, String p_id) {
state.skin_controller_data_map[p_id] = SkinControllerData();
SkinControllerData &skindata = state.skin_controller_data_map[p_id];
skindata.base = _uri_to_id(parser.get_attribute_value("source"));
String current_source;
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String section = parser.get_node_name();
if (section == "bind_shape_matrix") {
skindata.bind_shape = _read_transform(parser);
#ifdef COLLADA_IMPORT_SCALE_SCENE
skindata.bind_shape.origin *= state.unit_scale;
#endif
COLLADA_PRINT("skeleton bind shape transform: " + skindata.bind_shape);
} else if (section == "source") {
String id = parser.get_attribute_value("id");
skindata.sources[id] = SkinControllerData::Source();
current_source = id;
COLLADA_PRINT("source data: " + id);
} else if (section == "float_array" || section == "array") {
// create a new array and read it.
if (skindata.sources.has(current_source)) {
skindata.sources[current_source].array = _read_float_array(parser);
COLLADA_PRINT("section: " + current_source + " read " + itos(skindata.sources[current_source].array.size()) + " values.");
}
} else if (section == "Name_array" || section == "IDREF_array") {
// create a new array and read it.
if (section == "IDREF_array")
skindata.use_idrefs = true;
if (skindata.sources.has(current_source)) {
skindata.sources[current_source].sarray = _read_string_array(parser);
if (section == "IDREF_array") {
Vector<String> sa = skindata.sources[current_source].sarray;
for (int i = 0; i < sa.size(); i++)
state.idref_joints.insert(sa[i]);
}
COLLADA_PRINT("section: " + current_source + " read " + itos(skindata.sources[current_source].array.size()) + " values.");
}
} else if (section == "technique_common") {
//skip it
} else if (section == "accessor") { // child of source (below a technique tag)
if (skindata.sources.has(current_source)) {
int stride = 1;
if (parser.has_attribute("stride"))
stride = parser.get_attribute_value("stride").to_int();
skindata.sources[current_source].stride = stride;
COLLADA_PRINT("section: " + current_source + " stride " + itos(skindata.sources[current_source].stride));
}
} else if (section == "joints") {
SkinControllerData::Joints joint;
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "input") {
String semantic = parser.get_attribute_value("semantic");
String source = _uri_to_id(parser.get_attribute_value("source"));
joint.sources[semantic] = source;
COLLADA_PRINT(section + " input semantic: " + semantic + " source: " + source);
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == section)
break;
}
skindata.joints = joint;
} else if (section == "vertex_weights") {
SkinControllerData::Weights weights;
weights.count = parser.get_attribute_value("count").to_int();
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "input") {
String semantic = parser.get_attribute_value("semantic");
String source = _uri_to_id(parser.get_attribute_value("source"));
int offset = parser.get_attribute_value("offset").to_int();
SkinControllerData::Weights::SourceRef sref;
sref.source = source;
sref.offset = offset;
weights.sources[semantic] = sref;
COLLADA_PRINT(section + " input semantic: " + semantic + " source: " + source + " offset: " + itos(offset));
} else if (parser.get_node_name() == "v") { //indices
Vector<float> values = _read_float_array(parser);
weights.indices = values;
COLLADA_PRINT("read " + itos(values.size()) + " index values");
} else if (parser.get_node_name() == "vcount") { // weightsitive
Vector<float> values = _read_float_array(parser);
weights.sets = values;
COLLADA_PRINT("read " + itos(values.size()) + " polygon values");
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == section)
break;
}
skindata.weights = weights;
}
/*
else if (!parser.is_empty())
parser.skip_section();
*/
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "skin")
break;
}
/* STORE REST MATRICES */
Vector<Transform> rests;
ERR_FAIL_COND(!skindata.joints.sources.has("JOINT"));
ERR_FAIL_COND(!skindata.joints.sources.has("INV_BIND_MATRIX"));
String joint_arr = skindata.joints.sources["JOINT"];
String ibm = skindata.joints.sources["INV_BIND_MATRIX"];
ERR_FAIL_COND(!skindata.sources.has(joint_arr));
ERR_FAIL_COND(!skindata.sources.has(ibm));
SkinControllerData::Source &joint_source = skindata.sources[joint_arr];
SkinControllerData::Source &ibm_source = skindata.sources[ibm];
ERR_FAIL_COND(joint_source.sarray.size() != ibm_source.array.size() / 16);
for (int i = 0; i < joint_source.sarray.size(); i++) {
String name = joint_source.sarray[i];
Transform xform = _read_transform_from_array(ibm_source.array, i * 16); //<- this is a mistake, it must be applied to vertices
xform.affine_invert(); // inverse for rest, because it's an inverse
#ifdef COLLADA_IMPORT_SCALE_SCENE
xform.origin *= state.unit_scale;
#endif
skindata.bone_rest_map[name] = xform;
}
}
void Collada::_parse_morph_controller(XMLParser &parser, String p_id) {
state.morph_controller_data_map[p_id] = MorphControllerData();
MorphControllerData &morphdata = state.morph_controller_data_map[p_id];
morphdata.mesh = _uri_to_id(parser.get_attribute_value("source"));
morphdata.mode = parser.get_attribute_value("method");
String current_source;
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String section = parser.get_node_name();
if (section == "source") {
String id = parser.get_attribute_value("id");
morphdata.sources[id] = MorphControllerData::Source();
current_source = id;
COLLADA_PRINT("source data: " + id);
} else if (section == "float_array" || section == "array") {
// create a new array and read it.
if (morphdata.sources.has(current_source)) {
morphdata.sources[current_source].array = _read_float_array(parser);
COLLADA_PRINT("section: " + current_source + " read " + itos(morphdata.sources[current_source].array.size()) + " values.");
}
} else if (section == "Name_array" || section == "IDREF_array") {
// create a new array and read it.
/*
if (section=="IDREF_array")
morphdata.use_idrefs=true;
*/
if (morphdata.sources.has(current_source)) {
morphdata.sources[current_source].sarray = _read_string_array(parser);
/*
if (section=="IDREF_array") {
Vector<String> sa = morphdata.sources[current_source].sarray;
for(int i=0;i<sa.size();i++)
state.idref_joints.insert(sa[i]);
}*/
COLLADA_PRINT("section: " + current_source + " read " + itos(morphdata.sources[current_source].array.size()) + " values.");
}
} else if (section == "technique_common") {
//skip it
} else if (section == "accessor") { // child of source (below a technique tag)
if (morphdata.sources.has(current_source)) {
int stride = 1;
if (parser.has_attribute("stride"))
stride = parser.get_attribute_value("stride").to_int();
morphdata.sources[current_source].stride = stride;
COLLADA_PRINT("section: " + current_source + " stride " + itos(morphdata.sources[current_source].stride));
}
} else if (section == "targets") {
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "input") {
String semantic = parser.get_attribute_value("semantic");
String source = _uri_to_id(parser.get_attribute_value("source"));
morphdata.targets[semantic] = source;
COLLADA_PRINT(section + " input semantic: " + semantic + " source: " + source);
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == section)
break;
}
}
/*
else if (!parser.is_empty())
parser.skip_section();
*/
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "morph")
break;
}
if (morphdata.targets.has("MORPH_WEIGHT")) {
state.morph_name_map[morphdata.targets["MORPH_WEIGHT"]] = p_id;
}
}
void Collada::_parse_controller(XMLParser &parser) {
String id = parser.get_attribute_value("id");
if (parser.is_empty()) {
return;
}
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String section = parser.get_node_name();
if (section == "skin") {
_parse_skin_controller(parser, id);
} else if (section == "morph") {
_parse_morph_controller(parser, id);
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "controller")
break;
}
}
Collada::Node *Collada::_parse_visual_instance_geometry(XMLParser &parser) {
String type = parser.get_node_name();
NodeGeometry *geom = memnew(NodeGeometry);
geom->controller = type == "instance_controller";
geom->source = _uri_to_id(parser.get_attribute_value_safe("url"));
if (parser.is_empty()) //nothing else to parse...
return geom;
// try to find also many materials and skeletons!
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "instance_material") {
String symbol = parser.get_attribute_value("symbol");
String target = _uri_to_id(parser.get_attribute_value("target"));
NodeGeometry::Material mat;
mat.target = target;
geom->material_map[symbol] = mat;
COLLADA_PRINT("uses material: '" + target + "' on primitive'" + symbol + "'");
} else if (parser.get_node_name() == "skeleton") {
parser.read();
String uri = _uri_to_id(parser.get_node_data());
if (uri != "") {
geom->skeletons.push_back(uri);
}
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == type)
break;
}
if (geom->controller) {
if (geom->skeletons.empty()) {
//XSI style
if (state.skin_controller_data_map.has(geom->source)) {
SkinControllerData *skin = &state.skin_controller_data_map[geom->source];
//case where skeletons reference bones with IDREF (XSI)
ERR_FAIL_COND_V(!skin->joints.sources.has("JOINT"), geom);
String joint_arr = skin->joints.sources["JOINT"];
ERR_FAIL_COND_V(!skin->sources.has(joint_arr), geom);
Collada::SkinControllerData::Source &joint_source = skin->sources[joint_arr];
geom->skeletons = joint_source.sarray; //quite crazy, but should work.
}
}
}
return geom;
}
Collada::Node *Collada::_parse_visual_instance_camera(XMLParser &parser) {
NodeCamera *cam = memnew(NodeCamera);
cam->camera = _uri_to_id(parser.get_attribute_value_safe("url"));
if (state.up_axis == Vector3::AXIS_Z) //collada weirdness
cam->post_transform.basis.rotate(Vector3(1, 0, 0), -Math_PI * 0.5);
if (parser.is_empty()) //nothing else to parse...
return cam;
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "instance_camera")
break;
}
return cam;
}
Collada::Node *Collada::_parse_visual_instance_light(XMLParser &parser) {
NodeLight *cam = memnew(NodeLight);
cam->light = _uri_to_id(parser.get_attribute_value_safe("url"));
if (state.up_axis == Vector3::AXIS_Z) //collada weirdness
cam->post_transform.basis.rotate(Vector3(1, 0, 0), -Math_PI * 0.5);
if (parser.is_empty()) //nothing else to parse...
return cam;
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "instance_light")
break;
}
return cam;
}
Collada::Node *Collada::_parse_visual_node_instance_data(XMLParser &parser) {
String instance_type = parser.get_node_name();
if (instance_type == "instance_geometry" || instance_type == "instance_controller") {
return _parse_visual_instance_geometry(parser);
} else if (instance_type == "instance_camera") {
return _parse_visual_instance_camera(parser);
} else if (instance_type == "instance_light") {
return _parse_visual_instance_light(parser);
}
if (parser.is_empty()) //nothing else to parse...
return NULL;
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == instance_type)
break;
}
return NULL;
}
Collada::Node *Collada::_parse_visual_scene_node(XMLParser &parser) {
String name;
String id = parser.get_attribute_value_safe("id");
bool found_name = false;
if (id == "") {
id = "%NODEID%" + itos(Math::rand());
} else {
found_name = true;
}
Vector<Node::XForm> xform_list;
Vector<Node *> children;
String empty_draw_type = "";
Node *node = NULL;
name = parser.has_attribute("name") ? parser.get_attribute_value_safe("name") : parser.get_attribute_value_safe("id");
if (name == "") {
name = id;
} else {
found_name = true;
}
if ((parser.has_attribute("type") && parser.get_attribute_value("type") == "JOINT") || state.idref_joints.has(name)) {
// handle a bone
NodeJoint *joint = memnew(NodeJoint);
if (parser.has_attribute("sid")) { //bones may not have sid
joint->sid = parser.get_attribute_value("sid");
//state.bone_map[joint->sid]=joint;
} else if (state.idref_joints.has(name)) {
joint->sid = name; //kind of a cheat but..
} else if (parser.has_attribute("name")) {
joint->sid = parser.get_attribute_value_safe("name");
}
if (joint->sid != "") {
state.sid_to_node_map[joint->sid] = id;
}
node = joint;
}
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String section = parser.get_node_name();
if (section == "translate") {
Node::XForm xf;
if (parser.has_attribute("sid")) {
xf.id = parser.get_attribute_value("sid");
}
xf.op = Node::XForm::OP_TRANSLATE;
Vector<float> xlt = _read_float_array(parser);
xf.data = xlt;
xform_list.push_back(xf);
} else if (section == "rotate") {
Node::XForm xf;
if (parser.has_attribute("sid")) {
xf.id = parser.get_attribute_value("sid");
}
xf.op = Node::XForm::OP_ROTATE;
Vector<float> rot = _read_float_array(parser);
xf.data = rot;
xform_list.push_back(xf);
} else if (section == "scale") {
Node::XForm xf;
if (parser.has_attribute("sid")) {
xf.id = parser.get_attribute_value("sid");
}
xf.op = Node::XForm::OP_SCALE;
Vector<float> scale = _read_float_array(parser);
xf.data = scale;
xform_list.push_back(xf);
} else if (section == "matrix") {
Node::XForm xf;
if (parser.has_attribute("sid")) {
xf.id = parser.get_attribute_value("sid");
}
xf.op = Node::XForm::OP_MATRIX;
Vector<float> matrix = _read_float_array(parser);
xf.data = matrix;
String mtx;
for (int i = 0; i < matrix.size(); i++)
mtx += " " + rtos(matrix[i]);
xform_list.push_back(xf);
} else if (section == "visibility") {
Node::XForm xf;
if (parser.has_attribute("sid")) {
xf.id = parser.get_attribute_value("sid");
}
xf.op = Node::XForm::OP_VISIBILITY;
Vector<float> visible = _read_float_array(parser);
xf.data = visible;
xform_list.push_back(xf);
} else if (section == "empty_draw_type") {
empty_draw_type = _read_empty_draw_type(parser);
} else if (section == "technique" || section == "extra") {
} else if (section != "node") {
//usually what defines the type of node
if (section.begins_with("instance_")) {
if (!node) {
node = _parse_visual_node_instance_data(parser);
} else {
ERR_PRINT("Multiple instance_* not supported.");
}
}
} else {
/* Found a child node!! what to do..*/
Node *child = _parse_visual_scene_node(parser);
children.push_back(child);
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "node")
break;
}
if (!node) {
node = memnew(Node); //generic node, nothing of relevance found
}
node->noname = !found_name;
node->xform_list = xform_list;
node->children = children;
for (int i = 0; i < children.size(); i++) {
node->children[i]->parent = node;
}
node->name = name;
node->id = id;
node->empty_draw_type = empty_draw_type;
if (node->children.size() == 1) {
if (node->children[0]->noname && !node->noname) {
node->children[0]->name = node->name;
node->name = node->name + "-base";
}
}
node->default_transform = node->compute_transform(*this);
state.scene_map[id] = node;
return node;
}
void Collada::_parse_visual_scene(XMLParser &parser) {
String id = parser.get_attribute_value("id");
if (parser.is_empty()) {
return;
}
state.visual_scene_map[id] = VisualScene();
VisualScene &vscene = state.visual_scene_map[id];
if (parser.has_attribute("name"))
vscene.name = parser.get_attribute_value("name");
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String section = parser.get_node_name();
if (section == "node") {
vscene.root_nodes.push_back(_parse_visual_scene_node(parser));
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "visual_scene")
break;
}
COLLADA_PRINT("Scene ID:" + id);
}
void Collada::_parse_animation(XMLParser &parser) {
if (!(state.import_flags & IMPORT_FLAG_ANIMATION)) {
if (!parser.is_empty())
parser.skip_section();
return;
}
Map<String, Vector<float> > float_sources;
Map<String, Vector<String> > string_sources;
Map<String, int> source_strides;
Map<String, Map<String, String> > samplers;
Map<String, Vector<String> > source_param_names;
Map<String, Vector<String> > source_param_types;
String id = "";
if (parser.has_attribute("id"))
id = parser.get_attribute_value("id");
String current_source;
String current_sampler;
Vector<String> channel_sources;
Vector<String> channel_targets;
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String name = parser.get_node_name();
if (name == "source") {
current_source = parser.get_attribute_value("id");
source_param_names[current_source] = Vector<String>();
source_param_types[current_source] = Vector<String>();
} else if (name == "float_array") {
if (current_source != "") {
float_sources[current_source] = _read_float_array(parser);
}
} else if (name == "Name_array") {
if (current_source != "") {
string_sources[current_source] = _read_string_array(parser);
}
} else if (name == "accessor") {
if (current_source != "" && parser.has_attribute("stride")) {
source_strides[current_source] = parser.get_attribute_value("stride").to_int();
}
} else if (name == "sampler") {
current_sampler = parser.get_attribute_value("id");
samplers[current_sampler] = Map<String, String>();
} else if (name == "param") {
if (parser.has_attribute("name"))
source_param_names[current_source].push_back(parser.get_attribute_value("name"));
else
source_param_names[current_source].push_back("");
if (parser.has_attribute("type"))
source_param_types[current_source].push_back(parser.get_attribute_value("type"));
else
source_param_types[current_source].push_back("");
} else if (name == "input") {
if (current_sampler != "") {
samplers[current_sampler][parser.get_attribute_value("semantic")] = parser.get_attribute_value("source");
}
} else if (name == "channel") {
channel_sources.push_back(parser.get_attribute_value("source"));
channel_targets.push_back(parser.get_attribute_value("target"));
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "animation")
break; //end of <asset>
}
for (int i = 0; i < channel_sources.size(); i++) {
String source = _uri_to_id(channel_sources[i]);
String target = channel_targets[i];
ERR_CONTINUE(!samplers.has(source));
Map<String, String> &sampler = samplers[source];
ERR_CONTINUE(!sampler.has("INPUT")); //no input semantic? wtf?
String input_id = _uri_to_id(sampler["INPUT"]);
COLLADA_PRINT("input id is " + input_id);
ERR_CONTINUE(!float_sources.has(input_id));
ERR_CONTINUE(!sampler.has("OUTPUT"));
String output_id = _uri_to_id(sampler["OUTPUT"]);
ERR_CONTINUE(!float_sources.has(output_id));
ERR_CONTINUE(!source_param_names.has(output_id));
Vector<String> &names = source_param_names[output_id];
for (int l = 0; l < names.size(); l++) {
String name = names[l];
Vector<float> &time_keys = float_sources[input_id];
int key_count = time_keys.size();
AnimationTrack track; //begin crating track
track.id = id;
track.keys.resize(key_count);
for (int j = 0; j < key_count; j++) {
track.keys.write[j].time = time_keys[j];
state.animation_length = MAX(state.animation_length, time_keys[j]);
}
//now read actual values
int stride = 1;
if (source_strides.has(output_id))
stride = source_strides[output_id];
int output_len = stride / names.size();
ERR_CONTINUE(output_len == 0);
ERR_CONTINUE(!float_sources.has(output_id));
Vector<float> &output = float_sources[output_id];
ERR_CONTINUE_MSG((output.size() / stride) != key_count, "Wrong number of keys in output.");
for (int j = 0; j < key_count; j++) {
track.keys.write[j].data.resize(output_len);
for (int k = 0; k < output_len; k++)
track.keys.write[j].data.write[k] = output[l + j * stride + k]; //super weird but should work:
}
if (sampler.has("INTERPOLATION")) {
String interp_id = _uri_to_id(sampler["INTERPOLATION"]);
ERR_CONTINUE(!string_sources.has(interp_id));
Vector<String> &interps = string_sources[interp_id];
ERR_CONTINUE(interps.size() != key_count);
for (int j = 0; j < key_count; j++) {
if (interps[j] == "BEZIER")
track.keys.write[j].interp_type = AnimationTrack::INTERP_BEZIER;
else
track.keys.write[j].interp_type = AnimationTrack::INTERP_LINEAR;
}
}
if (sampler.has("IN_TANGENT") && sampler.has("OUT_TANGENT")) {
//bezier control points..
String intangent_id = _uri_to_id(sampler["IN_TANGENT"]);
ERR_CONTINUE(!float_sources.has(intangent_id));
Vector<float> &intangents = float_sources[intangent_id];
ERR_CONTINUE(intangents.size() != key_count * 2 * names.size());
String outangent_id = _uri_to_id(sampler["OUT_TANGENT"]);
ERR_CONTINUE(!float_sources.has(outangent_id));
Vector<float> &outangents = float_sources[outangent_id];
ERR_CONTINUE(outangents.size() != key_count * 2 * names.size());
for (int j = 0; j < key_count; j++) {
track.keys.write[j].in_tangent = Vector2(intangents[j * 2 * names.size() + 0 + l * 2], intangents[j * 2 * names.size() + 1 + l * 2]);
track.keys.write[j].out_tangent = Vector2(outangents[j * 2 * names.size() + 0 + l * 2], outangents[j * 2 * names.size() + 1 + l * 2]);
}
}
if (target.find("/") != -1) { //transform component
track.target = target.get_slicec('/', 0);
track.param = target.get_slicec('/', 1);
if (track.param.find(".") != -1)
track.component = track.param.get_slice(".", 1).to_upper();
track.param = track.param.get_slice(".", 0);
if (names.size() > 1 && track.component == "") {
//this is a guess because the collada spec is ambiguous here...
//i suppose if you have many names (outputs) you can't use a component and i should abide to that.
track.component = name;
}
} else {
track.target = target;
}
state.animation_tracks.push_back(track);
if (!state.referenced_tracks.has(target))
state.referenced_tracks[target] = Vector<int>();
state.referenced_tracks[target].push_back(state.animation_tracks.size() - 1);
if (id != "") {
if (!state.by_id_tracks.has(id))
state.by_id_tracks[id] = Vector<int>();
state.by_id_tracks[id].push_back(state.animation_tracks.size() - 1);
}
COLLADA_PRINT("loaded animation with " + itos(key_count) + " keys");
}
}
}
void Collada::_parse_animation_clip(XMLParser &parser) {
if (!(state.import_flags & IMPORT_FLAG_ANIMATION)) {
if (!parser.is_empty())
parser.skip_section();
return;
}
AnimationClip clip;
if (parser.has_attribute("name"))
clip.name = parser.get_attribute_value("name");
else if (parser.has_attribute("id"))
clip.name = parser.get_attribute_value("id");
if (parser.has_attribute("start"))
clip.begin = parser.get_attribute_value("start").to_double();
if (parser.has_attribute("end"))
clip.end = parser.get_attribute_value("end").to_double();
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String name = parser.get_node_name();
if (name == "instance_animation") {
String url = _uri_to_id(parser.get_attribute_value("url"));
clip.tracks.push_back(url);
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "animation_clip")
break; //end of <asset>
}
state.animation_clips.push_back(clip);
}
void Collada::_parse_scene(XMLParser &parser) {
if (parser.is_empty()) {
return;
}
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String name = parser.get_node_name();
if (name == "instance_visual_scene") {
state.root_visual_scene = _uri_to_id(parser.get_attribute_value("url"));
} else if (name == "instance_physics_scene") {
state.root_physics_scene = _uri_to_id(parser.get_attribute_value("url"));
}
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "scene")
break; //end of <asset>
}
}
void Collada::_parse_library(XMLParser &parser) {
if (parser.is_empty()) {
return;
}
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
String name = parser.get_node_name();
COLLADA_PRINT("library name is: " + name);
if (name == "image") {
_parse_image(parser);
} else if (name == "material") {
_parse_material(parser);
} else if (name == "effect") {
_parse_effect(parser);
} else if (name == "camera") {
_parse_camera(parser);
} else if (name == "light") {
_parse_light(parser);
} else if (name == "geometry") {
String id = parser.get_attribute_value("id");
String name2 = parser.get_attribute_value_safe("name");
while (parser.read() == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "mesh") {
state.mesh_name_map[id] = (name2 != "") ? name2 : id;
_parse_mesh_geometry(parser, id, name2);
} else if (parser.get_node_name() == "spline") {
state.mesh_name_map[id] = (name2 != "") ? name2 : id;
_parse_curve_geometry(parser, id, name2);
} else if (!parser.is_empty())
parser.skip_section();
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name() == "geometry")
break;
}
} else if (name == "controller") {
_parse_controller(parser);
} else if (name == "animation") {
_parse_animation(parser);
} else if (name == "animation_clip") {
_parse_animation_clip(parser);
} else if (name == "visual_scene") {
COLLADA_PRINT("visual scene");
_parse_visual_scene(parser);
} else if (!parser.is_empty())
parser.skip_section();
} else if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END && parser.get_node_name().begins_with("library_"))
break; //end of <asset>
}
}
void Collada::_joint_set_owner(Collada::Node *p_node, NodeSkeleton *p_owner) {
if (p_node->type == Node::TYPE_JOINT) {
NodeJoint *nj = static_cast<NodeJoint *>(p_node);
nj->owner = p_owner;
for (int i = 0; i < nj->children.size(); i++) {
_joint_set_owner(nj->children.write[i], p_owner);
}
}
}
void Collada::_create_skeletons(Collada::Node **p_node, NodeSkeleton *p_skeleton) {
Node *node = *p_node;
if (node->type == Node::TYPE_JOINT) {
if (!p_skeleton) {
// ohohohoohoo it's a joint node, time to work!
NodeSkeleton *sk = memnew(NodeSkeleton);
*p_node = sk;
sk->children.push_back(node);
sk->parent = node->parent;
node->parent = sk;
p_skeleton = sk;
}
NodeJoint *nj = static_cast<NodeJoint *>(node);
nj->owner = p_skeleton;
} else {
p_skeleton = NULL;
}
for (int i = 0; i < node->children.size(); i++) {
_create_skeletons(&node->children.write[i], p_skeleton);
}
}
bool Collada::_remove_node(Node *p_parent, Node *p_node) {
for (int i = 0; i < p_parent->children.size(); i++) {
if (p_parent->children[i] == p_node) {
p_parent->children.remove(i);
return true;
}
if (_remove_node(p_parent->children[i], p_node))
return true;
}
return false;
}
void Collada::_remove_node(VisualScene *p_vscene, Node *p_node) {
for (int i = 0; i < p_vscene->root_nodes.size(); i++) {
if (p_vscene->root_nodes[i] == p_node) {
p_vscene->root_nodes.remove(i);
return;
}
if (_remove_node(p_vscene->root_nodes[i], p_node))
return;
}
ERR_PRINT("ERROR: Not found node to remove?");
}
void Collada::_merge_skeletons(VisualScene *p_vscene, Node *p_node) {
if (p_node->type == Node::TYPE_GEOMETRY) {
NodeGeometry *gnode = static_cast<NodeGeometry *>(p_node);
if (gnode->controller) {
// recount skeletons used
Set<NodeSkeleton *> skeletons;
for (int i = 0; i < gnode->skeletons.size(); i++) {
String nodeid = gnode->skeletons[i];
ERR_CONTINUE(!state.scene_map.has(nodeid)); //weird, it should have it...
NodeJoint *nj = SAFE_CAST<NodeJoint *>(state.scene_map[nodeid]);
ERR_CONTINUE(!nj); //broken collada
ERR_CONTINUE(!nj->owner); //weird, node should have a skeleton owner
skeletons.insert(nj->owner);
}
if (skeletons.size() > 1) {
//do the merger!!
Set<NodeSkeleton *>::Element *E = skeletons.front();
NodeSkeleton *base = E->get();
for (E = E->next(); E; E = E->next()) {
NodeSkeleton *merged = E->get();
_remove_node(p_vscene, merged);
for (int i = 0; i < merged->children.size(); i++) {
_joint_set_owner(merged->children[i], base);
base->children.push_back(merged->children[i]);
merged->children[i]->parent = base;
}
merged->children.clear(); //take children from it
memdelete(merged);
}
}
}
}
for (int i = 0; i < p_node->children.size(); i++) {
_merge_skeletons(p_vscene, p_node->children[i]);
}
}
void Collada::_merge_skeletons2(VisualScene *p_vscene) {
for (Map<String, SkinControllerData>::Element *E = state.skin_controller_data_map.front(); E; E = E->next()) {
SkinControllerData &cd = E->get();
NodeSkeleton *skeleton = NULL;
for (Map<String, Transform>::Element *F = cd.bone_rest_map.front(); F; F = F->next()) {
String name;
if (!state.sid_to_node_map.has(F->key())) {
continue;
}
name = state.sid_to_node_map[F->key()];
ERR_CONTINUE(!state.scene_map.has(name));
Node *node = state.scene_map[name];
ERR_CONTINUE(node->type != Node::TYPE_JOINT);
NodeSkeleton *sk = NULL;
while (node && !sk) {
if (node->type == Node::TYPE_SKELETON) {
sk = static_cast<NodeSkeleton *>(node);
}
node = node->parent;
}
ERR_CONTINUE(!sk);
if (!skeleton) {
skeleton = sk;
continue;
}
if (skeleton != sk) {
//whoa.. wtf, merge.
_remove_node(p_vscene, sk);
for (int i = 0; i < sk->children.size(); i++) {
_joint_set_owner(sk->children[i], skeleton);
skeleton->children.push_back(sk->children[i]);
sk->children[i]->parent = skeleton;
}
sk->children.clear(); //take children from it
memdelete(sk);
}
}
}
}
bool Collada::_optimize_skeletons(VisualScene *p_vscene, Node *p_node) {
Node *node = p_node;
if (node->type == Node::TYPE_SKELETON && node->parent && node->parent->type == Node::TYPE_NODE && node->parent->children.size() == 1) {
//replace parent by this...
Node *parent = node->parent;
//i wonder if this is alright.. i think it is since created skeleton (first joint) is already animated by bone..
node->id = parent->id;
node->name = parent->name;
node->xform_list = parent->xform_list;
node->default_transform = parent->default_transform;
state.scene_map[node->id] = node;
node->parent = parent->parent;
if (parent->parent) {
Node *gp = parent->parent;
bool found = false;
for (int i = 0; i < gp->children.size(); i++) {
if (gp->children[i] == parent) {
gp->children.write[i] = node;
found = true;
break;
}
}
if (!found) {
ERR_PRINT("BUG");
}
} else {
bool found = false;
for (int i = 0; i < p_vscene->root_nodes.size(); i++) {
if (p_vscene->root_nodes[i] == parent) {
p_vscene->root_nodes.write[i] = node;
found = true;
break;
}
}
if (!found) {
ERR_PRINT("BUG");
}
}
parent->children.clear();
memdelete(parent);
return true;
}
for (int i = 0; i < node->children.size(); i++) {
if (_optimize_skeletons(p_vscene, node->children[i]))
return false; //stop processing, go up
}
return false;
}
bool Collada::_move_geometry_to_skeletons(VisualScene *p_vscene, Node *p_node, List<Node *> *p_mgeom) {
// Bind Shape Matrix scales the bones and makes them gigantic, so the matrix then shrinks the model?
// Solution: apply the Bind Shape Matrix to the VERTICES, and if the object comes scaled, it seems to be left alone!
if (p_node->type == Node::TYPE_GEOMETRY) {
NodeGeometry *ng = static_cast<NodeGeometry *>(p_node);
if (ng->ignore_anim)
return false; //already made child of skeleton and processeg
if (ng->controller && ng->skeletons.size()) {
String nodeid = ng->skeletons[0];
ERR_FAIL_COND_V(!state.scene_map.has(nodeid), false); //weird, it should have it...
NodeJoint *nj = SAFE_CAST<NodeJoint *>(state.scene_map[nodeid]);
ERR_FAIL_COND_V(!nj, false);
ERR_FAIL_COND_V(!nj->owner, false); //weird, node should have a skeleton owner
NodeSkeleton *sk = nj->owner;
Node *p = sk->parent;
bool node_is_parent_of_skeleton = false;
while (p) {
if (p == p_node) {
node_is_parent_of_skeleton = true;
break;
}
p = p->parent; // try again
}
ERR_FAIL_COND_V(node_is_parent_of_skeleton, false);
//this should be correct
ERR_FAIL_COND_V(!state.skin_controller_data_map.has(ng->source), false);
SkinControllerData &skin = state.skin_controller_data_map[ng->source];
Transform skel_inv = sk->get_global_transform().affine_inverse();
p_node->default_transform = skel_inv * (skin.bind_shape /* p_node->get_global_transform()*/); // i honestly have no idea what to do with a previous model xform.. most exporters ignore it
//make rests relative to the skeleton (they seem to be always relative to world)
for (Map<String, Transform>::Element *E = skin.bone_rest_map.front(); E; E = E->next()) {
E->get() = skel_inv * E->get(); //make the bone rest local to the skeleton
state.bone_rest_map[E->key()] = E->get(); // make it remember where the bone is globally, now that it's relative
}
//but most exporters seem to work only if i do this..
//p_node->default_transform = p_node->get_global_transform();
//p_node->default_transform=Transform(); //this seems to be correct, because bind shape makes the object local to the skeleton
p_node->ignore_anim = true; // collada may animate this later, if it does, then this is not supported (redo your original asset and don't animate the base mesh)
p_node->parent = sk;
//sk->children.push_back(0,p_node); //avoid INFINITE loop
p_mgeom->push_back(p_node);
return true;
}
}
for (int i = 0; i < p_node->children.size(); i++) {
if (_move_geometry_to_skeletons(p_vscene, p_node->children[i], p_mgeom)) {
p_node->children.remove(i);
i--;
}
}
return false;
}
void Collada::_find_morph_nodes(VisualScene *p_vscene, Node *p_node) {
if (p_node->type == Node::TYPE_GEOMETRY) {
NodeGeometry *nj = static_cast<NodeGeometry *>(p_node);
if (nj->controller) {
String base = nj->source;
while (base != "" && !state.mesh_data_map.has(base)) {
if (state.skin_controller_data_map.has(base)) {
SkinControllerData &sk = state.skin_controller_data_map[base];
base = sk.base;
} else if (state.morph_controller_data_map.has(base)) {
state.morph_ownership_map[base] = nj->id;
break;
} else {
ERR_FAIL_MSG("Invalid scene.");
}
}
}
}
for (int i = 0; i < p_node->children.size(); i++) {
_find_morph_nodes(p_vscene, p_node->children[i]);
}
}
void Collada::_optimize() {
for (Map<String, VisualScene>::Element *E = state.visual_scene_map.front(); E; E = E->next()) {
VisualScene &vs = E->get();
for (int i = 0; i < vs.root_nodes.size(); i++) {
_create_skeletons(&vs.root_nodes.write[i]);
}
for (int i = 0; i < vs.root_nodes.size(); i++) {
_merge_skeletons(&vs, vs.root_nodes[i]);
}
_merge_skeletons2(&vs);
for (int i = 0; i < vs.root_nodes.size(); i++) {
_optimize_skeletons(&vs, vs.root_nodes[i]);
}
for (int i = 0; i < vs.root_nodes.size(); i++) {
List<Node *> mgeom;
if (_move_geometry_to_skeletons(&vs, vs.root_nodes[i], &mgeom)) {
vs.root_nodes.remove(i);
i--;
}
while (!mgeom.empty()) {
Node *n = mgeom.front()->get();
n->parent->children.push_back(n);
mgeom.pop_front();
}
}
for (int i = 0; i < vs.root_nodes.size(); i++) {
_find_morph_nodes(&vs, vs.root_nodes[i]);
}
}
}
int Collada::get_uv_channel(String p_name) {
if (!channel_map.has(p_name)) {
ERR_FAIL_COND_V(channel_map.size() == 2, 0);
channel_map[p_name] = channel_map.size();
}
return channel_map[p_name];
}
Error Collada::load(const String &p_path, int p_flags) {
Ref<XMLParser> parserr = memnew(XMLParser);
XMLParser &parser = *parserr.ptr();
Error err = parser.open(p_path);
ERR_FAIL_COND_V_MSG(err, err, "Cannot open Collada file '" + p_path + "'.");
state.local_path = ProjectSettings::get_singleton()->localize_path(p_path);
state.import_flags = p_flags;
/* Skip headers */
while ((err = parser.read()) == OK) {
if (parser.get_node_type() == XMLParser::NODE_ELEMENT) {
if (parser.get_node_name() == "COLLADA") {
break;
} else if (!parser.is_empty())
parser.skip_section(); // unknown section, likely headers
}
}
ERR_FAIL_COND_V_MSG(err != OK, ERR_FILE_CORRUPT, "Corrupted Collada file '" + p_path + "'.");
/* Start loading Collada */
{
//version
String version = parser.get_attribute_value("version");
state.version.major = version.get_slice(".", 0).to_int();
state.version.minor = version.get_slice(".", 1).to_int();
state.version.rev = version.get_slice(".", 2).to_int();
COLLADA_PRINT("Collada VERSION: " + version);
}
while ((err = parser.read()) == OK) {
/* Read all the main sections.. */
if (parser.get_node_type() != XMLParser::NODE_ELEMENT)
continue; //no idea what this may be, but skipping anyway
String section = parser.get_node_name();
COLLADA_PRINT("section: " + section);
if (section == "asset") {
_parse_asset(parser);
} else if (section.begins_with("library_")) {
_parse_library(parser);
} else if (section == "scene") {
_parse_scene(parser);
} else if (!parser.is_empty()) {
parser.skip_section(); // unknown section, likely headers
}
}
_optimize();
return OK;
}
Collada::Collada() {
}
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