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kolibrios/programs/develop/libraries/gblib/gblib.c

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gblib src added git-svn-id: svn://kolibrios.org@1879 a494cfbc-eb01-0410-851d-a64ba20cac60
2011-02-18 18:46:37 +01:00
#include "gblib.h"
//=========================
void gb_pixel_set(GB_BMP *b, int x, int y, unsigned c)
{
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
unsigned s;
if ((x+1 > b->w )||(y+1 > b->h))
return;
if ((x < 0)||(y < 0))
return;
s = 3*( y*(b->w) + x );
*( b -> bmp + s ) = c & 0xff;
*( b -> bmp + s + 1) = (c >> 8) & 0xff;
*( b -> bmp + s + 2) = (c >> 16)& 0xff;
}
//=========================
int gb_pixel_get(GB_BMP *b, int x, int y, unsigned *c)
{
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
unsigned red, green, blue, s;
if ((x < 0) || (y < 0))
return 0;
if ((x+1 > b->w )||(y+1 > b->h))
return 0;
s = 3*( y*(b->w) + x );
blue = *( b -> bmp + s );
green = *( b -> bmp + s + 1);
red = *( b -> bmp + s + 2);
*c = ((red << 16) & 0xff0000) | ((green << 8) & 0xff00) | (blue & 0xff);
return 1;
}
//=========================
void gb_line(GB_BMP *b, int x1, int y1, int x2, int y2, unsigned c)
{
// <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><><EFBFBD><EFBFBD>p<EFBFBD><70><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
int t, dist;
int xerr=0, yerr=0, delta_x, delta_y;
int incx, incy;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> p<><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
delta_x = x2 - x1;
delta_y = y2 - y1;
// <20><>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>,
// <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><> <20><>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD> <20><>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><><EFBFBD><EFBFBD><EFBFBD>
if (delta_x > 0)
incx = 1;
else
if (0 == delta_x)
incx = 0;
else
incx = -1;
if (delta_y > 0)
incy = 1;
else
if ( 0 == delta_y)
incy = 0;
else
incy = -1;
// <20><>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> p<><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if (delta_x < 0)
delta_x *= -1;
if (delta_y < 0)
delta_y *= -1;
if (delta_x > delta_y)
dist = delta_x;
else
dist = delta_y;
// <20><><EFBFBD><EFBFBD>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
for (t = 0; t <= dist+1; t++)
{
gb_pixel_set(b, x1, y1, c);
xerr+=delta_x;
yerr+=delta_y;
if (xerr > dist)
{
xerr -= dist;
x1 += incx;
}
if (yerr > dist)
{
yerr -= dist;
y1 += incy;
}
}
}
//=========================
void gb_rect(GB_BMP *b, int x, int y, int w, int h, unsigned c)
{
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
gb_line (b, x, y, x+w-1, y, c);
gb_line (b, x, y+h-1, x+w-1, y+h-1, c);
gb_line (b, x, y, x, y+h-1, c);
gb_line (b, x+w-1, y, x+w-1, y+h-1, c);
}
//=========================
void gb_circle(GB_BMP *b, int x, int y, int r, unsigned c)
{
int _x;
int _y;
int d;
_x = 0;
_y = r;
d = 3-2*r;
while( _y >= _x)
{
gb_pixel_set(b, _x + x, _y + y, c);
gb_pixel_set(b, _x + x, -_y + y, c);
gb_pixel_set(b, -_x + x, _y + y, c);
gb_pixel_set(b, -_x + x, -_y + y, c);
gb_pixel_set(b, _y + x, _x + y, c);
gb_pixel_set(b, _y + x, -_x + y, c);
gb_pixel_set(b, -_y + x, _x + y, c);
gb_pixel_set(b, -_y + x, -_x + y, c);
if( d<0 )
d = d+4*_x+6;
else
{
d = d+4*(_x-_y)+10;
_y--;
}
_x++;
}
}
//=========================
void gb_bar(GB_BMP *b, int x, int y, int w, int h, unsigned c)
{
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
unsigned s;
int i, j;
if ((x > b->w)||(y > b->h))
return;
for (j = 0; j < w; j++)
for (i = 0; i < h; i++)
// gb_pixel_set(b, x+j, y+i, c);
{
s = 3*( (y+i)*(b->w) + x + j );
*( b -> bmp + s ) = c & 0xff;
*( b -> bmp + s + 1) = (c >> 8) & 0xff;
*( b -> bmp + s + 2) = (c >> 16)& 0xff;
}
}
//=========================
void gb_image_set(GB_BMP *b_dest, int x_d, int y_d, GB_BMP *b_src, int x_s, int y_s, int w, int h)
{
// <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
int x, y;
unsigned d;
if ((x_d > b_dest->w)||(y_d > b_dest->h))
return;
if ((x_s > b_src->w)||(y_s > b_src->h))
return;
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
if ( gb_pixel_get(b_src, x_s+x, y_s+y, &d) )
gb_pixel_set(b_dest, x_d+x, y_d+y, d);
}
//=========================
void gb_image_set_t(GB_BMP *b_dest, int x_d, int y_d, GB_BMP *b_src, int x_s, int y_s, int w, int h, unsigned c)
{
// <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
int x, y;
unsigned d;
if ((x_d > b_dest->w)||(y_d > b_dest->h))
return;
if ((x_s > b_src->w)||(y_s > b_src->h))
return;
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
if ( gb_pixel_get(b_src, x_s+x, y_s+y, &d) )
if (c != d)
gb_pixel_set(b_dest, x_d+x, y_d+y, d);
}
//=========================
#define NULL ((void*)0)
typedef struct
{
void *name;
void *function;
} export_t;
//=========================
char szGb_pixel_set[] = "gb_pixel_set";
char szGb_pixel_get[] = "gb_pixel_get";
char szGb_line[] = "gb_line";
char szGb_rect[] = "gb_rect";
char szGb_bar[] = "gb_bar";
char szGb_circle[] = "gb_circle";
char szGb_image_set[] = "gb_image_set";
char szGb_image_set_t[] = "gb_image_set_t";
export_t EXPORTS[] =
{
{ szGb_pixel_set, (void*) gb_pixel_set},
{ szGb_pixel_get, (void*) gb_pixel_get},
{ szGb_line, (void*) gb_line},
{ szGb_rect, (void*) gb_rect},
{ szGb_bar, (void*) gb_bar},
{ szGb_circle, (void*) gb_circle},
{ szGb_image_set, (void*) gb_image_set},
{ szGb_image_set_t, (void*) gb_image_set_t},
{ NULL, NULL },
};
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