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godot/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) 2007-2016 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. */
/*************************************************************************/
#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"
#include "os/file_access.h"
#include "method_ptrcall.h"
namespace TestMath {
class GetClassAndNamespace {
String code;
int idx;
int line;
String error_str;
bool error;
Variant value;
String class_name;
enum Token {
TK_BRACKET_OPEN,
TK_BRACKET_CLOSE,
TK_CURLY_BRACKET_OPEN,
TK_CURLY_BRACKET_CLOSE,
TK_PERIOD,
TK_COLON,
TK_COMMA,
TK_SYMBOL,
TK_IDENTIFIER,
TK_STRING,
TK_NUMBER,
TK_EOF,
TK_ERROR
};
Token get_token() {
while (true) {
switch(code[idx]) {
case '\n': {
line++;
idx++;
break;
};
case 0: {
return TK_EOF;
} break;
case '{': {
idx++;
return TK_CURLY_BRACKET_OPEN;
};
case '}': {
idx++;
return TK_CURLY_BRACKET_CLOSE;
};
case '[': {
idx++;
return TK_BRACKET_OPEN;
};
case ']': {
idx++;
return TK_BRACKET_CLOSE;
};
case ':': {
idx++;
return TK_COLON;
};
case ',': {
idx++;
return TK_COMMA;
};
case '.': {
idx++;
return TK_PERIOD;
};
case '#': {
//compiler directive
while(code[idx]!='\n' && code[idx]!=0) {
idx++;
}
continue;
} break;
case '/': {
switch(code[idx+1]) {
case '*': { // block comment
idx+=2;
while(true) {
if (code[idx]==0) {
error_str="Unterminated comment";
error=true;
return TK_ERROR;
} if (code[idx]=='*' &&code[idx+1]=='/') {
idx+=2;
break;
} if (code[idx]=='\n') {
line++;
}
idx++;
}
} break;
case '/': { // line comment skip
while(code[idx]!='\n' && code[idx]!=0) {
idx++;
}
} break;
default: {
value="/";
idx++;
return TK_SYMBOL;
}
}
continue; // a comment
} break;
case '\'':
case '"': {
CharType begin_str = code[idx];
idx++;
String tk_string=String();
while(true) {
if (code[idx]==0) {
error_str="Unterminated String";
error=true;
return TK_ERROR;
} else if (code[idx]==begin_str) {
idx++;
break;
} else if (code[idx]=='\\') {
//escaped characters...
idx++;
CharType next = code[idx];
if (next==0) {
error_str="Unterminated String";
error=true;
return TK_ERROR;
}
CharType res=0;
switch(next) {
case 'b': res=8; break;
case 't': res=9; break;
case 'n': res=10; break;
case 'f': res=12; break;
case 'r': res=13; break;
/* too much, not needed for now
case 'u': {
//hexnumbarh - oct is deprecated
for(int j=0;j<4;j++) {
CharType c = code[idx+j+1];
if (c==0) {
r_err_str="Unterminated String";
return ERR_PARSE_ERROR;
}
if (!((c>='0' && c<='9') || (c>='a' && c<='f') || (c>='A' && c<='F'))) {
r_err_str="Malformed hex constant in string";
return ERR_PARSE_ERROR;
}
CharType v;
if (c>='0' && c<='9') {
v=c-'0';
} else if (c>='a' && c<='f') {
v=c-'a';
v+=10;
} else if (c>='A' && c<='F') {
v=c-'A';
v+=10;
} else {
ERR_PRINT("BUG");
v=0;
}
res<<=4;
res|=v;
}
idx+=4; //will add at the end anyway
} break;*/
case '\"': res='\"'; break;
case '\\': res='\\'; break;
//case '/': res='/'; break;
default: {
res = next;
//r_err_str="Invalid escape sequence";
//return ERR_PARSE_ERROR;
} break;
}
tk_string+=res;
} else {
if (code[idx]=='\n')
line++;
tk_string+=code[idx];
}
idx++;
}
value=tk_string;
return TK_STRING;
} break;
default: {
if (code[idx]<=32) {
idx++;
break;
}
if ( (code[idx]>=33 && code[idx]<=47) || (code[idx]>=58 && code[idx]<=64) || (code[idx]>=91 && code[idx]<=96) || (code[idx]>=123 && code[idx]<=127)){
value=String::chr(code[idx]);
idx++;
return TK_SYMBOL;
}
if (code[idx]=='-' || (code[idx]>='0' && code[idx]<='9')) {
//a number
const CharType *rptr;
double number = String::to_double(&code[idx],&rptr);
idx+=(rptr - &code[idx]);
value=number;
return TK_NUMBER;
} else if ((code[idx]>='A' && code[idx]<='Z') || (code[idx]>='a' && code[idx]<='z') || code[idx]>127) {
String id;
while((code[idx]>='A' && code[idx]<='Z') || (code[idx]>='a' && code[idx]<='z') || code[idx]>127) {
id+=code[idx];
idx++;
}
value=id;
return TK_IDENTIFIER;
} else {
error_str="Unexpected character.";
error=true;
return TK_ERROR;
}
}
}
}
}
public:
Error parse(const String& p_code,const String& p_known_class_name=String()) {
code=p_code;
idx=0;
line=0;
error_str=String();
error=false;
value=Variant();
class_name=String();
bool use_next_class=false;
Token tk = get_token();
Map<int,String> namespace_stack;
int curly_stack=0;
while(!error || tk!=TK_EOF) {
if (tk==TK_BRACKET_OPEN) {
tk = get_token();
if (tk==TK_IDENTIFIER && String(value)=="ScriptClass") {
if (get_token()==TK_BRACKET_CLOSE) {
use_next_class=true;
}
}
} else if (tk==TK_IDENTIFIER && String(value)=="class") {
tk = get_token();
if (tk==TK_IDENTIFIER) {
String name = value;
if (use_next_class || p_known_class_name==name) {
for (Map<int,String>::Element *E=namespace_stack.front();E;E=E->next()) {
class_name+=E->get()+".";
}
class_name+=String(value);
break;
}
}
} else if (tk==TK_IDENTIFIER && String(value)=="namespace") {
String name;
int at_level = curly_stack;
while(true) {
tk = get_token();
if (tk==TK_IDENTIFIER) {
name+=String(value);
}
tk = get_token();
if (tk==TK_PERIOD) {
name+=".";
} else if (tk==TK_CURLY_BRACKET_OPEN) {
curly_stack++;
break;
} else {
break; //whathever else
}
}
if (name!=String()) {
namespace_stack[at_level]=name;
}
} else if (tk==TK_CURLY_BRACKET_OPEN) {
curly_stack++;
} else if (tk==TK_CURLY_BRACKET_CLOSE) {
curly_stack--;
if (namespace_stack.has(curly_stack)) {
namespace_stack.erase(curly_stack);
}
}
tk = get_token();
}
if (error)
return ERR_PARSE_ERROR;
return OK;
}
String get_error() {
return error_str;
}
String get_class() {
return class_name;
}
};
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
*/
}
uint32_t ihash( uint32_t a)
{
a = (a+0x7ed55d16) + (a<<12);
a = (a^0xc761c23c) ^ (a>>19);
a = (a+0x165667b1) + (a<<5);
a = (a+0xd3a2646c) ^ (a<<9);
a = (a+0xfd7046c5) + (a<<3);
a = (a^0xb55a4f09) ^ (a>>16);
return a;
}
uint32_t ihash2( uint32_t a) {
a = (a ^ 61) ^ (a >> 16);
a = a + (a << 3);
a = a ^ (a >> 4);
a = a * 0x27d4eb2d;
a = a ^ (a >> 15);
return a;
}
uint32_t ihash3( uint32_t a)
{
a = (a+0x479ab41d) + (a<<8);
a = (a^0xe4aa10ce) ^ (a>>5);
a = (a+0x9942f0a6) - (a<<14);
a = (a^0x5aedd67d) ^ (a>>3);
a = (a+0x17bea992) + (a<<7);
return a;
}
MainLoop* test() {
Matrix3 m;
m.rotate(Vector3(0,1,0),Math_PI*0.5);
print_line(m.scaled(Vector3(0.5,1,1)));
Matrix3 s;
s.scale(Vector3(0.5,1.0,1.0));
print_line(m * s);
return NULL;
List<String> cmdlargs = OS::get_singleton()->get_cmdline_args();
if (cmdlargs.empty()) {
//try editor!
return NULL;
}
String test = cmdlargs.back()->get();
FileAccess *fa = FileAccess::open(test,FileAccess::READ);
if (!fa) {
ERR_EXPLAIN("Could not open file: "+test);
ERR_FAIL_V(NULL);
}
Vector<uint8_t> buf;
int flen = fa->get_len();
buf.resize(fa->get_len()+1);
fa->get_buffer(&buf[0],flen);
buf[flen]=0;
String code;
code.parse_utf8((const char*)&buf[0]);
GetClassAndNamespace getclass;
if (getclass.parse(code)) {
print_line("Parse error: "+getclass.get_error());
} else {
print_line("Found class: "+getclass.get_class());
}
return NULL;
{
Vector<int> hashes;
List<StringName> tl;
ClassDB::get_class_list(&tl);
for (List<StringName>::Element *E=tl.front();E;E=E->next()) {
Vector<uint8_t> m5b = E->get().operator String().md5_buffer();
hashes.push_back(hashes.size());
}
//hashes.resize(50);
for(int i=nearest_shift(hashes.size());i<20;i++) {
bool success=true;
for(int s=0;s<10000;s++) {
Set<uint32_t> existing;
success=true;
for(int j=0;j<hashes.size();j++) {
uint32_t eh = ihash2(ihash3(hashes[j]+ihash(s)+s))&((1<<i)-1);
if (existing.has(eh)) {
success=false;
break;
}
existing.insert(eh);
}
if (success) {
print_line("success at "+itos(i)+"/"+itos(nearest_shift(hashes.size()))+" shift "+itos(s));
break;
}
}
if (success)
break;
}
print_line("DONE");
return NULL;
}
{
// 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;
}
}
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