/*
=======================================
画多边形
=======================================
*/
CR_API void_t
draw_polygon (
__CR_IO__ const sIMAGE* dst,
__CR_IN__ const sPNT2* pos,
__CR_IN__ uint_t count,
__CR_IN__ leng_t skip,
__CR_IN__ cpix_t color,
__CR_IN__ pixdraw_t pixel_draw
)
{
sLINE line;
sPNT2* next;
sPNT2* start;
uint_t index;
if (count-- <= 2)
return;
if (skip == 0)
skip = sizeof(sPNT2);
start = (sPNT2*)pos;
for (index = 0; index < count; index++, pos = next) {
next = (sPNT2*)((byte_t*)pos + skip);
line_set_xy(&line, pos->x, pos->y, next->x, next->y);
draw_line(dst, &line, color, pixel_draw);
}
line_set_xy(&line, start->x, start->y, pos->x, pos->y);
draw_line(dst, &line, color, pixel_draw);
}
/*
---------------------------------------
绘制线段
---------------------------------------
*/
static bool_t
qst_crh_line (
__CR_IN__ void_t* parm,
__CR_IN__ uint_t argc,
__CR_IN__ ansi_t** argv
)
{
sLINE line;
sIMAGE* draw;
sint_t sx, sy;
sint_t dx, dy;
/* 参数解析 <X1> <Y1> <X2> <Y2> */
if (argc < 5)
return (FALSE);
draw = ((sQstView2D*)parm)->paint;
if (draw == NULL)
return (FALSE);
sx = (sint_t)str2intxA(argv[1]);
sy = (sint_t)str2intxA(argv[2]);
dx = (sint_t)str2intxA(argv[3]);
dy = (sint_t)str2intxA(argv[4]);
line_set_xy(&line, sx, sy, dx, dy);
draw_line(draw, &line, s_color, s_pixdraw);
return (TRUE);
}
/*
---------------------------------------
移动坐标 (绘制)
---------------------------------------
*/
static bool_t
qst_crh_lineto (
__CR_IN__ void_t* parm,
__CR_IN__ uint_t argc,
__CR_IN__ ansi_t** argv
)
{
sLINE line;
sint_t newx;
sint_t newy;
sIMAGE* draw;
/* 参数解析 <X> <Y> */
if (argc < 3)
return (FALSE);
draw = ((sQstView2D*)parm)->paint;
if (draw == NULL)
return (FALSE);
newx = (sint_t)str2intxA(argv[1]);
newy = (sint_t)str2intxA(argv[2]);
line_set_xy(&line, s_posx, s_posy, newx, newy);
draw_line(draw, &line, s_color, s_pixdraw);
s_posx = newx;
s_posy = newy;
return (TRUE);
}
