From c0be7e16804c2a7af5da5cde25b8ce28e8f0fed7 Mon Sep 17 00:00:00 2001
From: Youssef Assem <yo_90_32@hotmail.com>
Date: Sun, 8 Dec 2019 20:49:49 +0200
Subject: [PATCH] collada model

Start
---
 OpenWindow/ColladaModel.cpp | 132 ++++++++++++++++++++++++++++++++++++
 OpenWindow/ColladaModel.h   |  36 ++++++++++
 2 files changed, 168 insertions(+)
 create mode 100644 OpenWindow/ColladaModel.cpp
 create mode 100644 OpenWindow/ColladaModel.h

diff --git a/OpenWindow/ColladaModel.cpp b/OpenWindow/ColladaModel.cpp
new file mode 100644
index 0000000..746621c
--- /dev/null
+++ b/OpenWindow/ColladaModel.cpp
@@ -0,0 +1,132 @@
+#include "ColladaModel.h"
+
+
+
+string trim(const string& str)
+{
+	size_t first = str.find_first_not_of(' ');
+	if (string::npos == first)
+	{
+		return str;
+	}
+	size_t last = str.find_last_not_of(' ');
+	return str.substr(first, (last - first + 1));
+}
+
+ColladaModel::ColladaModel(const char* filename) : positions_(), triangles_() ,normals_()
+{
+	XMLDocument doc;
+	doc.LoadFile("resources/face.dae");
+
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	XMLElement* xml_triangle_count = doc.FirstChildElement("COLLADA")->FirstChildElement("library_geometries")->FirstChildElement("geometry")->FirstChildElement("mesh")->FirstChildElement("triangles");
+	int triangle_count = 0;
+	xml_triangle_count->QueryIntAttribute("count", &triangle_count);
+
+	XMLElement* xml_triangle = doc.FirstChildElement("COLLADA")->FirstChildElement("library_geometries")->FirstChildElement("geometry")->FirstChildElement("mesh")->FirstChildElement("triangles")->FirstChildElement("p");
+	const char* xml2_triangle = xml_triangle->GetText();
+	stringstream str_triangle(xml2_triangle);
+
+	vector<vector<Vec3i>> triangle(triangle_count, vector<Vec3i>(3, Vec3i(0, 0, 0)));
+	for (int i = 0; i < triangle_count; i++)
+	{
+		int x = 0;
+
+		str_triangle >> x;
+		triangle[i][0].x = x;
+
+		str_triangle >> x;
+		triangle[i][1].x = x;
+
+		str_triangle >> x;
+		triangle[i][2].x = x;
+
+
+
+		str_triangle >> x;
+		triangle[i][0].y = x;
+
+		str_triangle >> x;
+		triangle[i][1].y = x;
+
+		str_triangle >> x;
+		triangle[i][2].y = x;
+
+
+
+		str_triangle >> x;
+		triangle[i][0].z = x;
+
+		str_triangle >> x;
+		triangle[i][1].z = x;
+
+		str_triangle >> x;
+		triangle[i][2].z = x;
+	}
+
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	XMLElement* xml_vertice = doc.FirstChildElement("COLLADA")->FirstChildElement("library_geometries")->FirstChildElement("geometry")->FirstChildElement("mesh")->FirstChildElement("source")->FirstChildElement("float_array");
+	int vertice_count = 0;
+	xml_vertice->QueryIntAttribute("count", &vertice_count);
+
+	const char* xml2_vertice = xml_vertice->GetText();
+	stringstream str_vertice(xml2_vertice);
+
+	vector<Vec3f> vertice(vertice_count / 3);
+	for (int i = 0; i < vertice_count / 3; i++)
+	{
+		float x = 0;
+
+		str_vertice >> x;
+		vertice[i].x = x;
+
+		str_vertice >> x;
+		vertice[i].y = x;
+
+		str_vertice >> x;
+		vertice[i].z = x;
+	}
+
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	XMLElement* xml_normal_count = doc.FirstChildElement("COLLADA")->FirstChildElement("library_geometries")->FirstChildElement("geometry")->FirstChildElement("mesh")->FirstChildElement("source")->NextSiblingElement()->FirstChildElement("float_array");
+	int normal_count = 0;
+	xml_normal_count->QueryIntAttribute("count", &normal_count);
+	XMLElement* xml_normal = doc.FirstChildElement("COLLADA")->FirstChildElement("library_geometries")->FirstChildElement("geometry")->FirstChildElement("mesh")->FirstChildElement("source")->NextSiblingElement()->FirstChildElement("float_array");
+	const char* xml2_normal = xml_normal->GetText();
+	stringstream str_normal(xml2_normal);
+
+	vector<Vec3f> normal(normal_count / 3);
+	for (int i = 0; i < normal_count / 3; i++)
+	{
+		float x = 0;
+
+		str_normal >> x;
+		normal[i].x = x;
+
+		str_normal >> x;
+		normal[i].y = x;
+
+		str_normal >> x;
+		normal[i].z = x;
+	}
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+	/////////////////////////////////////////////////////////////////////////////////////////////////
+}
+
+ColladaModel::~ColladaModel() {
+}
+
+std::vector<int> ColladaModel::triangle(int idx) {
+	return triangles_[idx];
+}
+
+Vec3f ColladaModel::position(int i) {
+	return positions_[i];
+}
\ No newline at end of file
diff --git a/OpenWindow/ColladaModel.h b/OpenWindow/ColladaModel.h
new file mode 100644
index 0000000..ad8480c
--- /dev/null
+++ b/OpenWindow/ColladaModel.h
@@ -0,0 +1,36 @@
+#ifndef __MODEL_s__
+#define __MODEL_s__
+
+#pragma once
+
+#include "ColladaModel.h"
+#include "tinyxml2.h"
+#include "geometry.h"
+#include <cerrno>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <fstream>
+#include <iostream>
+#include <string>
+#include <sstream>
+#include <vector>
+
+
+using namespace tinyxml2;
+using namespace std;
+
+class ColladaModel {
+private:
+	std::vector<Vec3f> positions_;
+	std::vector<Vec3f> normals_;
+	std::vector<std::vector<int> > triangles_;
+public:
+	ColladaModel(const char* filename);
+	~ColladaModel();
+
+	Vec3f position(int i);
+	std::vector<int> triangle(int idx);
+};
+
+#endif
\ No newline at end of file