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godot/tools/collada/collada.cpp

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/*************************************************************************/
/* collada.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
/* */
/* 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. */
/*************************************************************************/
#ifdef TOOLS_ENABLED
#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 {
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) {
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[0]=interp.basis.elements[0][0];
ret[1]=interp.basis.elements[0][1];
ret[2]=interp.basis.elements[0][2];
ret[4]=interp.basis.elements[1][0];
ret[5]=interp.basis.elements[1][1];
ret[6]=interp.basis.elements[1][2];
ret[8]=interp.basis.elements[2][0];
ret[9]=interp.basis.elements[2][1];
ret[10]=interp.basis.elements[2][2];
ret[3]=interp.origin.x;
ret[7]=interp.origin.y;
ret[11]=interp.origin.z;
ret[12]=0;
ret[13]=0;
ret[14]=0;
ret[15]=1;
return ret;
} else {
Vector<float> dest;
dest.resize(keys[i].data.size());
for(int j=0;j<dest.size();j++) {
dest[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=Globals::get_singleton()->localize_path(state.local_path.get_base_dir()+"/"+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=Globals::get_singleton()->localize_path(state.local_path.get_base_dir()+"/"+path);
} else if (path.find("file:///")==0) {
path=path.replace_first("file:///","");
path=Globals::get_singleton()->localize_path(path);
}
image.path=path;
} 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();
//for(int i=0;i<array.size();i++) {
// print_line(itos(i)+": "+array[i]);
//}
}
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<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(" ",false);
}
else
if (parser.get_node_type() == XMLParser::NODE_ELEMENT_END)
break; // end parsing text
}
ERR_FAIL_COND_V(array.size()!=16,Transform());
return _read_transform_from_array(array);
}
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 allright? 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];
int channel=0;
//if (parser.has_attribute("texcoord"))
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") {
#if 1
effect.shininess=_parse_param(parser);
#else
parser.read();
float shininess = parser.get_node_data().to_double();
effect.shininess=shininess;
COLLADA_PRINT("shininess: "+rtos(shininess));
#endif
}
} 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];
int channel=0;
//if (parser.has_attribute("texcoord"))
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 allright? 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 childs 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 childs 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" || section=="float_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) {
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[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];
print_line("morph source: "+parser.get_attribute_value("source")+" id: "+p_id);
morphdata.mesh=_uri_to_id(parser.get_attribute_value("source"));
print_line("morph source2: "+morphdata.mesh);
morphdata.mode=parser.get_attribute_value("method");
printf("JJmorph: %p\n",&morphdata);
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) {
String type = parser.get_node_name();
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) {
String type = parser.get_node_name();
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;
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=="technique" || section=="extra") {
} else if (section!="node") {
//usually what defines the type of node
//print_line(" dont know what to do with "+section);
if (section.begins_with("instance_")) {
if (!node) {
node = _parse_visual_node_instance_data(parser);
} else {
ERR_PRINT("Multiple instance_* not supported.");
}
}
} else if (section=="node") {
/* 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;
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];
if (!samplers.has(source)) {
print_line("channel lacks source: "+source);
}
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[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_EXPLAIN("Wrong number of keys in output");
ERR_CONTINUE( (output.size()/stride) != key_count );
for(int j=0;j<key_count;j++) {
track.keys[j].data.resize(output_len);
for(int k=0;k<output_len;k++)
track.keys[j].data[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[j].interp_type=AnimationTrack::INTERP_BEZIER;
else
track.keys[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[j].in_tangent=Vector2( intangents[j*2*names.size()+0+l*2],intangents[j*2*names.size()+1+l*2] );
track.keys[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;
}
print_line("TARGET: "+track.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);
print_line("found anim clip: "+clip.name);
}
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"));
print_line("***ROOT VISUAL SCENE: "+state.root_visual_scene);
} 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 name = 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]=(name!="")?name:id;
_parse_mesh_geometry(parser,id,name);
} else if (parser.get_node_name()=="spline") {
state.mesh_name_map[id]=(name!="")?name:id;
_parse_curve_geometry(parser,id,name);
} 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[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[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]);
if (!nj->owner) {
print_line("no owner for: "+String(nodeid));
}
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()];
if (!state.scene_map.has(name)) {
print_line("no foundie node for: "+name);
}
ERR_CONTINUE( !state.scene_map.has(name) );
Node *node=state.scene_map[name];
ERR_CONTINUE( node->type!=Node::TYPE_JOINT );
if (node->type!=Node::TYPE_JOINT)
continue;
NodeSkeleton *sk=NULL;
while(node && !sk) {
if (node->type==Node::TYPE_SKELETON) {
sk=static_cast<NodeSkeleton*>(node);
}
node=node->parent;
}
ERR_CONTINUE( !sk );
if (!sk)
continue; //bleh
if (!skeleton) {
skeleton=sk;
continue;
}
if (skeleton!=sk) {
//whoa.. wtf, merge.
print_line("MERGED BONES!!");
//NodeSkeleton *merged = E->get();
_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 allright.. 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[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[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 escala los huesos y los hace gigantes, asi la matriz despues achica
// al modelo?
// solucion: aplicarle la bind shape matrix a los VERTICES, y si el objeto viene con escala, se la dejo me parece!
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);
if (!nj->owner) {
print_line("Has no owner: "+nj->name);
}
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 INFINIT 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)) {
MorphControllerData &sk = state.morph_controller_data_map[base];
state.morph_ownership_map[base]=nj->id;
break;
} else {
ERR_EXPLAIN("Invalid scene");
ERR_FAIL();
}
}
}
}
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[i]);
}
#if 1
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();
}
}
#endif
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(err,err);
state.local_path = Globals::get_singleton()->localize_path(p_path);
state.import_flags=p_flags;
/* Skip headers */
err=OK;
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(err!=OK, ERR_FILE_CORRUPT);
/* 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() {
}
#endif
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