GODOT IS OPEN SOURCE

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diff --git a/bin/tests/test_math.cpp b/bin/tests/test_math.cpp
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+/*************************************************************************/
+/*  test_math.cpp                                                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2014 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.                */
+/*************************************************************************/
+#include "test_math.h"
+#include "ustring.h"
+#include "print_string.h"
+#include "transform.h"
+#include "matrix3.h"
+#include "math_funcs.h"
+#include "camera_matrix.h"
+#include "scene/main/node.h"
+#include "variant.h"
+#include "servers/visual/shader_language.h"
+#include "os/keyboard.h"
+#include "scene/resources/texture.h"
+#include "vmap.h"
+#include "os/os.h"
+namespace TestMath {
+
+
+void test_vec(Plane p_vec) {
+
+
+	CameraMatrix cm;
+	cm.set_perspective(45,1,0,100);
+	Plane v0=cm.xform4(p_vec);
+
+	print_line("out: "+v0);
+	v0.normal.z = (v0.d/100.0 *2.0-1.0) * v0.d;
+	print_line("out_F: "+v0);
+
+
+/*v0: 0, 0, -0.1, 0.1
+v1: 0, 0, 0, 0.1
+fix: 0, 0, 0, 0.1
+v0: 0, 0, 1.302803, 1.5
+v1: 0, 0, 1.401401, 1.5
+fix: 0, 0, 1.401401, 1.5
+v0: 0, 0, 25.851850, 26
+v1: 0, 0, 25.925926, 26
+fix: 0, 0, 25.925924, 26
+v0: 0, 0, 49.899902, 50
+v1: 0, 0, 49.949947, 50
+fix: 0, 0, 49.949951, 50
+v0: 0, 0, 100, 100
+v1: 0, 0, 100, 100
+fix: 0, 0, 100, 100
+*/     
+
+
+}
+
+
+MainLoop* test() {
+
+	{
+
+	//	print_line("NUM: "+itos(237641278346127));
+		print_line("NUM: "+itos(-128));
+		return NULL;
+
+	}
+
+
+	{
+		Vector3 v(1,2,3);
+		v.normalize();
+		float a=0.3;
+
+		//Quat q(v,a);
+		Matrix3 m(v,a);
+
+		Vector3 v2(7,3,1);
+		v2.normalize();
+		float a2=0.8;
+
+		//Quat q(v,a);
+		Matrix3 m2(v2,a2);
+
+		Quat q=m;
+		Quat q2=m2;
+
+		Matrix3 m3 = m.inverse() * m2;
+		Quat q3 = (q.inverse() * q2);//.normalized();
+
+		print_line(Quat(m3));
+		print_line(q3);
+
+		print_line("before v: "+v+" a: "+rtos(a));
+		q.get_axis_and_angle(v,a);
+		print_line("after v: "+v+" a: "+rtos(a));
+	}
+
+	return NULL;
+	String ret;
+
+	List<String> args;
+	args.push_back("-l");
+	Error err = OS::get_singleton()->execute("/bin/ls",args,true,NULL,&ret);
+	print_line("error: "+itos(err));
+	print_line(ret);
+
+	return NULL;
+	Matrix3 m3;
+	m3.rotate(Vector3(1,0,0),0.2);
+	m3.rotate(Vector3(0,1,0),1.77);
+	m3.rotate(Vector3(0,0,1),212);
+	Matrix3 m32;
+	m32.set_euler(m3.get_euler());
+	print_line("ELEULEEEEEEEEEEEEEEEEEER: "+m3.get_euler()+" vs "+m32.get_euler());
+
+
+	return NULL;
+
+	{
+
+		Dictionary d;
+		d["momo"]=1;
+		Dictionary b=d;
+		b["44"]=4;
+	}
+
+
+
+	return NULL;
+	print_line("inters: "+rtos(Geometry::segment_intersects_circle(Vector2(-5,0),Vector2(-2,0),Vector2(),1.0)));
+
+
+
+	print_line("cross: "+Vector3(1,2,3).cross(Vector3(4,5,7)));
+	print_line("dot: "+rtos(Vector3(1,2,3).dot(Vector3(4,5,7))));
+	print_line("abs: "+Vector3(-1,2,-3).abs());
+	print_line("distance_to: "+rtos(Vector3(1,2,3).distance_to(Vector3(4,5,7))));
+	print_line("distance_squared_to: "+rtos(Vector3(1,2,3).distance_squared_to(Vector3(4,5,7))));
+	print_line("plus: "+(Vector3(1,2,3)+Vector3(Vector3(4,5,7))));
+	print_line("minus: "+(Vector3(1,2,3)-Vector3(Vector3(4,5,7))));
+	print_line("mul: "+(Vector3(1,2,3)*Vector3(Vector3(4,5,7))));
+	print_line("div: "+(Vector3(1,2,3)/Vector3(Vector3(4,5,7))));
+	print_line("mul scalar: "+(Vector3(1,2,3)*2));
+	print_line("premul scalar: "+(2*Vector3(1,2,3)));
+	print_line("div scalar: "+(Vector3(1,2,3)/3.0));
+	print_line("length: "+rtos(Vector3(1,2,3).length()));
+	print_line("length squared: "+rtos(Vector3(1,2,3).length_squared()));
+	print_line("normalized: "+Vector3(1,2,3).normalized());
+	print_line("inverse: "+Vector3(1,2,3).inverse());
+
+	{
+		Vector3 v(4,5,7);
+		v.normalize();
+		print_line("normalize: "+v);
+	}
+
+	{
+		Vector3 v(4,5,7);
+		v+=Vector3(1,2,3);
+		print_line("+=: "+v);
+	}
+
+	{
+		Vector3 v(4,5,7);
+		v-=Vector3(1,2,3);
+		print_line("-=: "+v);
+	}
+
+	{
+		Vector3 v(4,5,7);
+		v*=Vector3(1,2,3);
+		print_line("*=: "+v);
+	}
+
+	{
+		Vector3 v(4,5,7);
+		v/=Vector3(1,2,3);
+		print_line("/=: "+v);
+	}
+
+	{
+		Vector3 v(4,5,7);
+		v*=2.0;
+		print_line("scalar *=: "+v);
+	}
+
+	{
+		Vector3 v(4,5,7);
+		v/=2.0;
+		print_line("scalar /=: "+v);
+	}
+
+
+
+#if 0
+	print_line(String("C:\\momo\\.\\popo\\..\\gongo").simplify_path());
+	print_line(String("res://../popo/..//gongo").simplify_path());
+	print_line(String("res://..").simplify_path());
+
+
+	DVector<uint8_t> a;
+	DVector<uint8_t> b;
+
+	a.resize(20);
+	b=a;
+	b.resize(30);
+	a=b;
+#endif
+
+#if 0
+	String za = String::utf8("á");
+	printf("unicode: %x\n",za[0]);
+	CharString cs=za.utf8();
+	for(int i=0;i<cs.size();i++) {
+		uint32_t v = uint8_t(cs[i]);
+		printf("%i - %x\n",i,v);
+	}
+	return NULL;
+
+	print_line(String("C:\\window\\system\\momo").path_to("C:\\window\\momonga"));
+	print_line(String("res://momo/sampler").path_to("res://pindonga"));
+	print_line(String("/margarito/terere").path_to("/margarito/pilates"));
+	print_line(String("/algo").path_to("/algo"));
+	print_line(String("c:").path_to("c:\\"));
+	print_line(String("/").path_to("/"));
+
+
+	print_line(itos(sizeof(Variant)));
+	return NULL;
+
+	Vector<StringName> path;
+	path.push_back("three");
+	path.push_back("two");
+	path.push_back("one");
+	path.push_back("comeon");
+	path.revert();
+
+	NodePath np(path,true);
+
+	print_line(np);
+
+
+	return NULL;
+
+	bool a=2;
+
+	print_line(Variant(a));
+
+
+	Matrix32 mat2_1;
+	mat2_1.rotate(0.5);
+	Matrix32 mat2_2;
+	mat2_2.translate(Vector2(1,2));
+	Matrix32 mat2_3 = mat2_1 * mat2_2;
+	mat2_3.affine_invert();
+
+	print_line(mat2_3.elements[0]);
+	print_line(mat2_3.elements[1]);
+	print_line(mat2_3.elements[2]);
+
+
+
+	Transform mat3_1;
+	mat3_1.basis.rotate(Vector3(0,0,1),0.5);
+	Transform mat3_2;
+	mat3_2.translate(Vector3(1,2,0));
+	Transform mat3_3 = mat3_1 * mat3_2;
+	mat3_3.affine_invert();
+
+	print_line(mat3_3.basis.get_axis(0));
+	print_line(mat3_3.basis.get_axis(1));
+	print_line(mat3_3.origin);
+
+#endif
+	return NULL;
+
+}
+
+}