MBDyn spherical hinge (#33)

* moved misc files to project resource

* MBDyn Sperical Hinge

* Werner compil warning (#32)

* Replace int by size_t in for loops.

* Various dtor missing and some other warning fixes.

* fixed size_t vs int

* fixed size_t vs int

---------

Co-authored-by: Paddle <PaddleStroke@users.noreply.github.com>
Co-authored-by: Aik-Siong Koh <askoh@askoh.com>

* moved misc files to project resource

* MBDyn Sperical Hinge

* gravity fix

---------

Co-authored-by: PaddleStroke <pierrelouis.boyer@gmail.com>
Co-authored-by: Paddle <PaddleStroke@users.noreply.github.com>

OndselSolver/MBDynGravity.cpp

@@ -0,0 +1,58 @@
+#include <regex>
+
+#include "MBDynGravity.h"
+#include "ASMTConstantGravity.h"
+#include "ASMTAssembly.h"
+
+using namespace MbD;
+
+void MbD::MBDynGravity::parseMBDyn(std::string line)
+{
+	gravityString = line;
+	size_t previousPos = 0;
+	auto pos = line.find(":");
+	auto front = line.substr(previousPos, pos - previousPos);
+	assert(front.find("gravity") != std::string::npos);
+	auto arguments = std::vector<std::string>();
+	std::string argument;
+	while (true) {
+		previousPos = pos;
+		pos = line.find(",", pos + 1);
+		if (pos != std::string::npos) {
+			argument = line.substr(previousPos + 1, pos - previousPos - 1);
+			arguments.push_back(argument);
+		}
+		else {
+			argument = line.substr(previousPos + 1);
+			arguments.push_back(argument);
+			break;
+		}
+	}
+	assert(arguments.at(0).find("uniform") != std::string::npos);
+	arguments.erase(arguments.begin());
+	gvec = readPosition(arguments);
+	assert(arguments.at(0).find("string") != std::string::npos);
+	arguments.erase(arguments.begin());
+	auto iss = std::istringstream(arguments.at(0));
+	iss >> formula;
+	formula = std::regex_replace(formula, std::regex("\""), "");
+	double mag;
+	iss = std::istringstream(formula);
+	iss >> mag;
+
+	arguments.erase(arguments.begin());
+	gvec->normalizeSelf();
+	gvec->magnifySelf(mag);
+}
+
+void MbD::MBDynGravity::readFunction(std::vector<std::string>& args)
+{
+	assert(false);
+}
+
+void MbD::MBDynGravity::createASMT()
+{
+	auto asmtGravity = std::make_shared<ASMTConstantGravity>();
+	asmtGravity->setg(gvec);
+	asmtAssembly()->setConstantGravity(asmtGravity);
+}