本文整理汇总了C++中wxMemoryDC::DrawLines方法的典型用法代码示例。如果您正苦于以下问题：C++ wxMemoryDC::DrawLines方法的具体用法？C++ wxMemoryDC::DrawLines怎么用？C++ wxMemoryDC::DrawLines使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类wxMemoryDC的用法示例。
在下文中一共展示了wxMemoryDC::DrawLines方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: RenderViewOnDC
//.........这里部分代码省略.........
y = lat_min;
// printf("%d %d\n", lon_min, lon_max);
// Make positive definite longitude for easier integer math
lon_min += 720;
lon_max += 720;
double ref_lon = VPoint.clon;
// Loop around the lat/lon spec to get and draw the vector segments
for(y = lat_min ; y < lat_max ; y++)
{
for(x = lon_min ; x < lon_max ; x++)
{
// Get the arrays of lat/lon vector segments
// Sanity Check
int xt = x;
int yt = y;
// Check the cache first
int ix = xt % 360; //xt + 180; // bias to positive
int iy = yt + 90;
if( (ix > 359) || (ix < 0) || (iy > 179) || (iy < 0) )
continue;
if(-1 == nseg[ix][iy]) // no data yet
{
// so fill cache
platray = NULL;
plonray = NULL;
psegray = NULL;
int nsegments = wvsrtv (*pwvs_file_name,
y, ix, &platray, &plonray, &psegray);
plat_ray[ix][iy] = platray;
plon_ray[ix][iy] = plonray;
pseg_ray[ix][iy] = psegray;
nseg[ix][iy] = nsegments;
// printf("load at %d %d \n", ix, iy);
}
// else
// printf(" from cache at %d %d \n", ix, iy);
if(nseg[ix][iy])
{
float *plat_seg = plat_ray[ix][iy];
float *plon_seg = plon_ray[ix][iy];
int *pseg_cnt = pseg_ray[ix][iy];
for(int iseg = 0 ; iseg < nseg[ix][iy] ; iseg++)
{
int seg_cnt = *pseg_cnt++;
if(seg_cnt > cur_seg_cnt_max)
{
cur_seg_cnt_max = seg_cnt;
ptp = (wxPoint *)realloc(ptp, seg_cnt * sizeof(wxPoint));
}
wxPoint *pr = ptp;
wxPoint p;
for(int ip = 0 ; ip < seg_cnt ; ip++)
{
float plat = *plat_seg++;
float plon = *plon_seg++;
if(fabs(plon - ref_lon) > 180.)
{
if(plon > ref_lon)
plon -= 360.;
else
plon += 360.;
}
double easting, northing;
toSM(plat, plon + 360., VPoint.clat, ref_lon + 360., &easting, &northing);
double epix = easting * VPoint.view_scale_ppm;
double npix = northing * VPoint.view_scale_ppm;
double dx = epix * cos(VPoint.skew) + npix * sin(VPoint.skew);
double dy = npix * cos(VPoint.skew) - epix * sin(VPoint.skew);
p.x = (int)round((VPoint.pix_width / 2) + dx);
p.y = (int)round((VPoint.pix_height / 2) - dy);
*pr = p;
pr++;
}
dc.DrawLines(seg_cnt, ptp);
}
}
} // for x
} //for y
platray = NULL;
plonray = NULL;
psegray = NULL;
wvsrtv (_T("clean"), y, x, &platray, &plonray, &psegray);
}