assimp/code/AssetLib/AMF/AMFImporter_Geometry.cpp

290 lines
9.9 KiB
C++

/*
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Open Asset Import Library (assimp)
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*/
/// \file AMFImporter_Geometry.cpp
/// \brief Parsing data from geometry nodes.
/// \date 2016
/// \author smal.root@gmail.com
#ifndef ASSIMP_BUILD_NO_AMF_IMPORTER
#include "AMFImporter.hpp"
#include "AMFImporter_Macro.hpp"
#include <assimp/ParsingUtils.h>
namespace Assimp {
// <mesh>
// </mesh>
// A 3D mesh hull.
// Multi elements - Yes.
// Parent element - <object>.
void AMFImporter::ParseNode_Mesh(XmlNode &node) {
AMFNodeElementBase *ne = nullptr;
// create new mesh object.
ne = new AMFMesh(mNodeElement_Cur);
// Check for child nodes
if (0 != ASSIMP_stricmp(node.name(), "mesh")) {
return;
}
bool found_verts = false, found_volumes = false;
if (!node.empty()) {
ParseHelper_Node_Enter(ne);
pugi::xml_node vertNode = node.child("vertices");
if (!vertNode.empty()) {
ParseNode_Vertices(vertNode);
found_verts = true;
}
pugi::xml_node volumeNode = node.child("volume");
if (!volumeNode.empty()) {
ParseNode_Volume(volumeNode);
found_volumes = true;
}
ParseHelper_Node_Exit();
}
if (!found_verts && !found_volumes) {
mNodeElement_Cur->Child.push_back(ne);
} // if(!mReader->isEmptyElement()) else
// and to node element list because its a new object in graph.
mNodeElement_List.push_back(ne);
}
// <vertices>
// </vertices>
// The list of vertices to be used in defining triangles.
// Multi elements - No.
// Parent element - <mesh>.
void AMFImporter::ParseNode_Vertices(XmlNode &node) {
AMFNodeElementBase *ne = nullptr;
// create new mesh object.
ne = new AMFVertices(mNodeElement_Cur);
// Check for child nodes
pugi::xml_node vertexNode = node.child("vertex");
if (!vertexNode.empty()) {
ParseHelper_Node_Enter(ne);
ParseNode_Vertex(vertexNode);
ParseHelper_Node_Exit();
} else {
mNodeElement_Cur->Child.push_back(ne); // Add element to child list of current element
} // if(!mReader->isEmptyElement()) else
mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
}
// <vertex>
// </vertex>
// A vertex to be referenced in triangles.
// Multi elements - Yes.
// Parent element - <vertices>.
void AMFImporter::ParseNode_Vertex(XmlNode &node) {
AMFNodeElementBase *ne = nullptr;
// create new mesh object.
ne = new AMFVertex(mNodeElement_Cur);
// Check for child nodes
pugi::xml_node colorNode = node.child("color");
bool col_read = false;
bool coord_read = false;
if (!node.empty()) {
ParseHelper_Node_Enter(ne);
if (!colorNode.empty()) {
ParseNode_Color(colorNode);
col_read = true;
}
pugi::xml_node coordNode = node.child("coordinates");
if (!coordNode.empty()) {
ParseNode_Coordinates(coordNode);
coord_read = true;
}
ParseHelper_Node_Exit();
}
if (!coord_read && !col_read) {
mNodeElement_Cur->Child.push_back(ne); // Add element to child list of current element
}
mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
}
// <coordinates>
// </coordinates>
// Specifies the 3D location of this vertex.
// Multi elements - No.
// Parent element - <vertex>.
//
// Children elements:
// <x>, <y>, <z>
// Multi elements - No.
// X, Y, or Z coordinate, respectively, of a vertex position in space.
void AMFImporter::ParseNode_Coordinates(XmlNode &node) {
AMFNodeElementBase *ne = nullptr;
// create new color object.
ne = new AMFCoordinates(mNodeElement_Cur);
AMFCoordinates &als = *((AMFCoordinates *)ne); // alias for convenience
if (!node.empty()) {
ParseHelper_Node_Enter(ne);
for (XmlNode &currentNode : node.children()) {
const std::string &currentName = currentNode.name();
if (currentName == "X") {
XmlParser::getValueAsFloat(currentNode, als.Coordinate.x);
} else if (currentName == "Y") {
XmlParser::getValueAsFloat(currentNode, als.Coordinate.y);
} else if (currentName == "Z") {
XmlParser::getValueAsFloat(currentNode, als.Coordinate.z);
}
}
ParseHelper_Node_Exit();
} else {
mNodeElement_Cur->Child.push_back(ne);
}
mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
}
// <volume
// materialid="" - Which material to use.
// type="" - What this volume describes can be “region” or “support”. If none specified, “object” is assumed. If support, then the geometric
// requirements 1-8 listed in section 5 do not need to be maintained.
// >
// </volume>
// Defines a volume from the established vertex list.
// Multi elements - Yes.
// Parent element - <mesh>.
void AMFImporter::ParseNode_Volume(XmlNode &node) {
std::string materialid;
std::string type;
AMFNodeElementBase *ne = new AMFVolume(mNodeElement_Cur);
// Read attributes for node <color>.
// and assign read data
((AMFVolume *)ne)->MaterialID = node.attribute("materialid").as_string();
((AMFVolume *)ne)->Type = type;
// Check for child nodes
bool col_read = false;
if (!node.empty()) {
ParseHelper_Node_Enter(ne);
for (XmlNode currentNode = node.first_child(); currentNode; currentNode = currentNode.next_sibling()) {
const std::string currentName = currentNode.name();
if (currentName == "color") {
if (col_read) Throw_MoreThanOnceDefined(currentName, "color", "Only one color can be defined for <volume>.");
ParseNode_Color(currentNode);
col_read = true;
} else if (currentName == "triangle") {
ParseNode_Triangle(currentNode);
} else if (currentName == "metadata") {
ParseNode_Metadata(currentNode);
} else if (currentName == "volume") {
ParseNode_Metadata(currentNode);
}
}
ParseHelper_Node_Exit();
} else {
mNodeElement_Cur->Child.push_back(ne); // Add element to child list of current element
}
mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
}
// <triangle>
// </triangle>
// Defines a 3D triangle from three vertices, according to the right-hand rule (counter-clockwise when looking from the outside).
// Multi elements - Yes.
// Parent element - <volume>.
//
// Children elements:
// <v1>, <v2>, <v3>
// Multi elements - No.
// Index of the desired vertices in a triangle or edge.
void AMFImporter::ParseNode_Triangle(XmlNode &node) {
AMFNodeElementBase *ne = new AMFTriangle(mNodeElement_Cur);
// create new triangle object.
AMFTriangle &als = *((AMFTriangle *)ne); // alias for convenience
bool col_read = false;
if (!node.empty()) {
ParseHelper_Node_Enter(ne);
for (XmlNode currentNode = node.first_child(); currentNode; currentNode = currentNode.next_sibling()) {
const std::string currentName = currentNode.name();
if (currentName == "color") {
if (col_read) Throw_MoreThanOnceDefined(currentName, "color", "Only one color can be defined for <triangle>.");
ParseNode_Color(currentNode);
col_read = true;
} else if (currentName == "texmap") {
ParseNode_TexMap(currentNode);
} else if (currentName == "map") {
ParseNode_TexMap(currentNode, true);
} else if (currentName == "v1") {
als.V[0] = std::atoi(currentNode.value());
} else if (currentName == "v2") {
als.V[1] = std::atoi(currentNode.value());
} else if (currentName == "v3") {
als.V[2] = std::atoi(currentNode.value());
}
}
ParseHelper_Node_Exit();
} else {
mNodeElement_Cur->Child.push_back(ne); // Add element to child list of current element
}
mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
}
} // namespace Assimp
#endif // !ASSIMP_BUILD_NO_AMF_IMPORTER