#include <windows.h>
#include <windowsx.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <list>
#include "../../svm.h"
using namespace std;
#define DEFAULT_PARAM "-t 2 -c 100"
#define XLEN 500
#define YLEN 500
#define DrawLine(dc,x1,y1,x2,y2,c) \
do { \
HPEN hpen = CreatePen(PS_SOLID,0,c); \
HPEN horig = SelectPen(dc,hpen); \
MoveToEx(dc,x1,y1,NULL); \
LineTo(dc,x2,y2); \
SelectPen(dc,horig); \
DeletePen(hpen); \
} while(0)
using namespace std;
COLORREF colors[] =
{
RGB(0,0,0),
RGB(0,120,120),
RGB(120,120,0),
RGB(120,0,120),
RGB(0,200,200),
RGB(200,200,0),
RGB(200,0,200)
};
HWND main_window;
HBITMAP buffer;
HDC window_dc;
HDC buffer_dc;
HBRUSH brush1, brush2, brush3;
HWND edit;
enum {
ID_BUTTON_CHANGE, ID_BUTTON_RUN, ID_BUTTON_CLEAR,
ID_BUTTON_LOAD, ID_BUTTON_SAVE, ID_EDIT
};
struct point {
double x, y;
signed char value;
};
list<point> point_list;
int current_value = 1;
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static char szAppName[] = "SvmToy";
MSG msg;
WNDCLASSEX wndclass;
wndclass.cbSize = sizeof(wndclass);
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = WndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hbrBackground = (HBRUSH) GetStockObject(BLACK_BRUSH);
wndclass.lpszMenuName = NULL;
wndclass.lpszClassName = szAppName;
wndclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
RegisterClassEx(&wndclass);
main_window = CreateWindow(szAppName, // window class name
"SVM Toy", // window caption
WS_OVERLAPPEDWINDOW,// window style
CW_USEDEFAULT, // initial x position
CW_USEDEFAULT, // initial y position
XLEN, // initial x size
YLEN+52, // initial y size
NULL, // parent window handle
NULL, // window menu handle
hInstance, // program instance handle
NULL); // creation parameters
ShowWindow(main_window, iCmdShow);
UpdateWindow(main_window);
CreateWindow("button", "Change", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
0, YLEN, 50, 25, main_window, (HMENU) ID_BUTTON_CHANGE, hInstance, NULL);
CreateWindow("button", "Run", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
50, YLEN, 50, 25, main_window, (HMENU) ID_BUTTON_RUN, hInstance, NULL);
CreateWindow("button", "Clear", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
100, YLEN, 50, 25, main_window, (HMENU) ID_BUTTON_CLEAR, hInstance, NULL);
CreateWindow("button", "Save", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
150, YLEN, 50, 25, main_window, (HMENU) ID_BUTTON_SAVE, hInstance, NULL);
CreateWindow("button", "Load", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
200, YLEN, 50, 25, main_window, (HMENU) ID_BUTTON_LOAD, hInstance, NULL);
edit = CreateWindow("edit", NULL, WS_CHILD | WS_VISIBLE,
250, YLEN, 250, 25, main_window, (HMENU) ID_EDIT, hInstance, NULL);
Edit_SetText(edit,DEFAULT_PARAM);
brush1 = CreateSolidBrush(colors[4]);
brush2 = CreateSolidBrush(colors[5]);
brush3 = CreateSolidBrush(colors[6]);
window_dc = GetDC(main_window);
buffer = CreateCompatibleBitmap(window_dc, XLEN, YLEN);
buffer_dc = CreateCompatibleDC(window_dc);
SelectObject(buffer_dc, buffer);
PatBlt(buffer_dc, 0, 0, XLEN, YLEN, BLACKNESS);
while (GetMessage(&msg, NULL, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
int getfilename( HWND hWnd , char *filename, int len, int save)
{
OPENFILENAME OpenFileName;
memset(&OpenFileName,0,sizeof(OpenFileName));
filename[0]='\0';
OpenFileName.lStructSize = sizeof(OPENFILENAME);
OpenFileName.hwndOwner = hWnd;
OpenFileName.lpstrFile = filename;
OpenFileName.nMaxFile = len;
OpenFileName.Flags = 0;
return save?GetSaveFileName(&OpenFileName):GetOpenFileName(&OpenFileName);
}
void clear_all()
{
point_list.clear();
PatBlt(buffer_dc, 0, 0, XLEN, YLEN, BLACKNESS);
InvalidateRect(main_window, 0, 0);
}
HBRUSH choose_brush(int v)
{
if(v==1) return brush1;
else if(v==2) return brush2;
else return brush3;
}
void draw_point(const point & p)
{
RECT rect;
rect.left = int(p.x*XLEN);
rect.top = int(p.y*YLEN);
rect.right = int(p.x*XLEN) + 3;
rect.bottom = int(p.y*YLEN) + 3;
FillRect(window_dc, &rect, choose_brush(p.value));
FillRect(buffer_dc, &rect, choose_brush(p.value));
}
void draw_all_points()
{
for(list<point>::iterator p = point_list.begin(); p != point_list.end(); p++)
draw_point(*p);
}
void button_run_clicked()
{
// guard
if(point_list.empty()) return;
svm_parameter param;
int i,j;
// default values
param.svm_type = C_SVC;
param.kernel_type = RBF;
param.degree = 3;
param.gamma = 0;
param.coef0 = 0;
param.nu = 0.5;
param.cache_size = 100;
param.C = 1;
param.eps = 1e-3;
param.p = 0.1;
param.shrinking = 1;
param.probability = 0;
param.nr_weight = 0;
param.weight_label = NULL;
param.weight = NULL;
// parse options
char str[1024];
Edit_GetLine(edit, 0, str, sizeof(str));
const char *p = str;
while (1) {
while (*p && *p != '-')
p++;
if (*p == '\0')
break;
p++;
switch (*p++) {
case 's':
param.svm_type = atoi(p);
break;
case 't':
param.kernel_type = atoi(p);
break;
case 'd':
param.degree = atoi(p);
break;
case 'g':
param.gamma = atof(p);
break;
case 'r':
param.coef0 = atof(p);
break;
case 'n':
param.nu = atof(p);
break;
case 'm':
param.cache_size = atof(p);
break;
case 'c':
param.C = atof(p);
break;
case 'e':
param.eps = atof(p);
break;
case 'p':
param.p = atof(p);
break;
case 'h':
param.shrinking = atoi(p);
break;
case 'b':
param.probability = atoi(p);
break;
case 'w':
++param.nr_weight;
param.weight_label = (int *)realloc(param.weight_label,sizeof(int)*param.nr_weight);
param.weight = (double *)realloc(param.weight,sizeof(double)*param.nr_weight);
param.weight_label[param.nr_weight-1] = atoi(p);
while(*p && !isspace(*p)) ++p;
param.weight[param.nr_weight-1] = atof(p);
break;
}
}
// build problem
svm_problem prob;
prob.l = point_list.size();
prob.y = new double[prob.l];
if(param.kernel_type == PRECOMPUTED)
{
}
else if(param.svm_type == EPSILON_SVR ||
param.svm_type == NU_SVR)
{
if(param.gamma == 0) param.gamma = 1;
svm_node *x_space = new svm_node[2 * prob.l];
prob.x = new svm_node *[prob.l];
i = 0;
for (list<point>::iterator q = point_list.begin(); q != point_list.end(); q++, i++)
{
x_space[2 * i].index = 1;
x_space[2 * i].value = q->x;
x_space[2 * i + 1].index = -1;
prob.x[i] = &x_space[2 * i];
prob.y[i] = q->y;
}
// build model & classify
svm_model *model = svm_train(&prob, ¶m);
svm_node x[2];
x[0].index = 1;
x[1].index = -1;
int *j = new int[XLEN];
for (i = 0; i < XLEN; i++)
{
x[0].value = (double) i / XLEN;
j[i] = (int)(YLEN*svm_predict(model, x));
}
DrawLine(buffer_dc,0,0,0,YLEN,colors[0]);
DrawLine(window_dc,0,0,0,YLEN,colors[0]);
int p = (int)(param.p * YLEN);
for(int i=1; i < XLEN; i++)
{
DrawLine(buffer_dc,i,0,i,YLEN,colors[0]);
DrawLine(window_dc,i,0,i,YLEN,colors[0]);
DrawLine(buffer_dc,i-1,j[i-1],i,j[i],colors[5]);
DrawLine(window_dc,i-1,j[i-1],i,j[i],colors[5]);
if(param.svm_type == EPSILON_SVR)
{
DrawLine(buffer_dc,i-1,j[i-1]+p,i,j[i]+p,colors[2]);
DrawLine(window_dc,i-1,j[i-1]+p,i,j[i]+p,colors[2]);
DrawLine(buffer_dc,i-1,j[i-1]-p,i,j[i]-p,colors[2]);
DrawLine(window_dc,i-1,j[i-1]-p,i,j[i]-p,colors[2]);
}
}
svm_free_and_destroy_model(&model);
delete[] j;
delete[] x_space;
delete[] prob.x;
delete[] prob.y;
}
else
{
if(param.gamma == 0) param.gamma = 0.5;
svm_node *x_space = new svm_node[3 * prob.l];
prob.x = new svm_node *[prob.l];
i = 0;
for (list<point>::iterator q = point_list.begin(); q != point_list.end(); q++, i++)
{
x_space[3 * i].index = 1;
x_space[3 * i].value = q->x;
x_space[3 * i + 1].index = 2;
x_space[3 * i + 1].value = q->y;
x_space[3 * i + 2].index = -1;
prob.x[i] = &x_space[3 * i];
prob.y[i] = q->value;
}
// build model & classify
svm_model *model = svm_train(&prob, ¶m);
svm_node x[3];
x[0].index = 1;
x[1].index = 2;
x[2].index = -1;
for (i = 0; i < XLEN; i++)
for (j = 0; j < YLEN; j++) {
x[0].value = (double) i / XLEN;
x[1].value = (double) j / YLEN;
double d = svm_predict(model, x);
if (param.svm_type == ONE_CLASS && d<0) d=2;
SetPixel(window_dc, i, j, colors[(int)d]);
SetPixel(buffer_dc, i, j, colors[(int)d]);
}
svm_free_and_destroy_model(&model);
delete[] x_space;
delete[] prob.x;
delete[] prob.y;
}
free(param.weight_label);
free(param.weight);
draw_all_points();
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
switch (iMsg) {
case WM_LBUTTONDOWN:
{
int x = LOWORD(lParam);
int y = HIWORD(lParam);
point p = {(double)x/XLEN, (double)y/YLEN, current_value};
point_list.push_back(p);
draw_point(p);
}
return 0;
case WM_PAINT:
{
hdc = BeginPaint(hwnd, &ps);
BitBlt(hdc, 0, 0, XLEN, YLEN, buffer_dc, 0, 0, SRCCOPY);
EndPaint(hwnd, &ps);
}
return 0;
case WM_COMMAND:
{
int id = LOWORD(wParam);
switch (id) {
case ID_BUTTON_CHANGE:
++current_value;
if(current_value > 3) current_value = 1;
break;
case ID_BUTTON_RUN:
button_run_clicked();
break;
case ID_BUTTON_CLEAR:
clear_all();
break;
case ID_BUTTON_SAVE:
{
char filename[1024];
if(getfilename(hwnd,filename,1024,1))
{
FILE *fp = fopen(filename,"w");
char str[1024];
Edit_GetLine(edit, 0, str, sizeof(str));
const char *p = str;
const char* svm_type_str = strstr(p, "-s ");
int svm_type = C_SVC;
if(svm_type_str != NULL)
sscanf(svm_type_str, "-s %d", &svm_type);
if(fp)
{
if(svm_type == EPSILON_SVR || svm_type == NU_SVR)
{
for(list<point>::iterator p = point_list.begin(); p != point_list.end();p++)
fprintf(fp,"%f 1:%f\n", p->y, p->x);
}
else
{
for(list<point>::iterator p = point_list.begin(); p != point_list.end();p++)
fprintf(fp,"%d 1:%f 2:%f\n", p->value, p->x, p->y);
}
fclose(fp);
}
}
}
break;
case ID_BUTTON_LOAD:
{
char filename[1024];
if(getfilename(hwnd,filename,1024,0))
{
FILE *fp = fopen(filename,"r");
if(fp)
{
clear_all();
char buf[4096];
while(fgets(buf,sizeof(buf),fp))
{
int v;
double x,y;
if(sscanf(buf,"%d%*d:%lf%*d:%lf",&v,&x,&y)==3)
{
point p = {x,y,v};
point_list.push_back(p);
}
else if(sscanf(buf,"%lf%*d:%lf",&y,&x)==2)
{
point p = {x,y,current_value};
point_list.push_back(p);
}
else
break;
}
fclose(fp);
draw_all_points();
}
}
}
break;
}
}
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd, iMsg, wParam, lParam);
}